/**
 * Rox AI Admin Panel Stylesheet
 * Matches the exact theme and UI of the user-side chat interface
 */

/* ===== CSS Variables - Exact Match with User Side ===== */
:root {
    --bg-primary: #0f1a24;
    --bg-secondary: #152232;
    --bg-tertiary: #1a2b3c;
    --bg-elevated: #1e3347;
    --bg-hover: #243d52;
    --text-primary: #ffffff;
    --text-secondary: #a0b4c4;
    --text-tertiary: #6b8599;
    --border: #2a3f52;
    --accent: #3eb489;
    --accent-hover: #35a07a;
    --accent-secondary: #d97bb3;
    --user-bubble: #3d4f5f;
    --user-avatar: #d97bb3;
    --ai-avatar: #3eb489;
    --success: #3eb489;
    --error: #ef4444;
    --warning: #f59e0b;
    --sidebar-width: 320px;
    --chats-width: 280px;
    --header-height: 56px;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Base Styles ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ===== Login Overlay ===== */
.login-overlay {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, #1a1a2e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.login-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(118, 75, 162, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(62, 180, 137, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.login-box {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    position: relative;
    overflow: hidden;
}

.login-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), #667eea, #764ba2, var(--accent));
    background-size: 300% 100%;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.login-logo { margin-bottom: 28px; }
.login-logo svg { 
    filter: drop-shadow(0 0 30px rgba(102, 126, 234, 0.5));
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.login-box h2 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-box p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.input-group { margin-bottom: 20px; }

.input-group input {
    width: 100%;
    padding: 16px 18px;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(62, 180, 137, 0.15), 0 4px 20px rgba(62, 180, 137, 0.1);
    background: var(--bg-tertiary);
}

.input-group input::placeholder { color: var(--text-tertiary); }

.login-error {
    color: var(--error);
    font-size: 13px;
    margin-top: 14px;
    min-height: 20px;
    font-weight: 500;
}

.login-attempts {
    color: var(--text-tertiary);
    font-size: 11px;
    margin-top: 8px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: currentColor;
    opacity: 0.3;
    width: 0%;
    transition: width 0.3s ease;
}

.btn.loading .btn-progress {
    animation: btnProgress 2s ease-in-out infinite;
}

@keyframes btnProgress {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #35a07a 100%);
    color: white;
    width: 100%;
    padding: 16px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(62, 180, 137, 0.3);
    transition: all 0.3s ease;
}

.btn-primary:hover { 
    background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(62, 180, 137, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled { 
    opacity: 0.6; 
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover { background: rgba(239, 68, 68, 0.25); }

.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-sm span { margin-left: 4px; }

/* ===== Dropdown ===== */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown-arrow {
    transition: transform 0.2s ease;
}

.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 180px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 1000;
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.15s ease;
    text-align: left;
}

.dropdown-item:first-child { border-radius: 7px 7px 0 0; }
.dropdown-item:last-child { border-radius: 0 0 7px 7px; }

.dropdown-item:hover {
    background: var(--bg-tertiary);
}

.dropdown-item svg {
    color: var(--text-secondary);
}

.btn .spinner {
    animation: spin 1s linear infinite;
}

.btn.spinning svg {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== App Layout ===== */
.app {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform 0.3s var(--ease-out-expo);
    overflow: hidden;
    max-height: 100vh;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-section h1 {
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn-logout {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.btn-logout:hover {
    background: var(--bg-hover);
    color: var(--error);
}

/* Stats Row */
.stats-row {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.stat-box {
    flex: 1;
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: help;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.stat-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), #764ba2);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.stat-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.2);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-elevated) 100%);
    border-color: rgba(102, 126, 234, 0.3);
}

.stat-box:hover::before {
    opacity: 1;
}

.stat-val {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, #667eea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-lbl {
    font-size: 10px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.stat-trend {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 4px;
    font-size: 9px;
    font-weight: 600;
}

.stat-trend.up {
    color: var(--success);
}

.stat-trend.down {
    color: var(--error);
}

.stat-trend.neutral {
    color: var(--text-tertiary);
}

.trend-arrow {
    width: 0;
    height: 0;
}

.trend-arrow.up {
    border-left: 3px solid transparent;
    border-right: 3px solid transparent;
    border-bottom: 4px solid var(--success);
}

.trend-arrow.down {
    border-left: 3px solid transparent;
    border-right: 3px solid transparent;
    border-top: 4px solid var(--error);
}

.trend-arrow.neutral {
    width: 6px;
    height: 2px;
    background: var(--text-tertiary);
}

/* Sidebar Tabs */
.sidebar-tabs {
    display: flex;
    padding: 8px 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.tab-btn {
    flex: 1;
    padding: 8px;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.tab-btn:hover { background: var(--bg-tertiary); color: var(--text-secondary); }
.tab-btn.active { background: var(--bg-tertiary); color: var(--accent); }

.tab-shortcut {
    background: rgba(255, 255, 255, 0.1);
    color: inherit;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 9px;
    font-weight: 600;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.tab-btn:hover .tab-shortcut,
.tab-btn.active .tab-shortcut {
    opacity: 1;
}

.tab-content { 
    flex: 1; 
    overflow-y: auto; 
    overflow-x: hidden;
    display: flex; 
    flex-direction: column;
    transition: opacity 0.15s ease, transform 0.15s ease;
    min-height: 0;
}

/* Search Box */
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    margin: 8px 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border);
    position: relative;
    flex-shrink: 0;
}

.search-box svg { color: var(--text-tertiary); flex-shrink: 0; }

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
}

.search-box input::placeholder { color: var(--text-tertiary); }

.search-results-count {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent);
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    animation: countPop 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes countPop {
    0% { transform: translateY(-50%) scale(0); }
    50% { transform: translateY(-50%) scale(1.2); }
    100% { transform: translateY(-50%) scale(1); }
}

/* Users Section */
.users-section { 
    flex: 1; 
    overflow: hidden; 
    display: flex; 
    flex-direction: column;
    min-height: 0;
}

.section-title {
    padding: 8px 16px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.section-title svg {
    color: var(--accent);
    flex-shrink: 0;
}

.section-actions {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
    transform: scale(1.1);
}

.btn-icon:active {
    transform: scale(0.95);
}

.user-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0 8px 8px;
    min-height: 0;
}

/* User Card */
.user-card {
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 6px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.user-card:hover { background: var(--bg-elevated); }
.user-card.active { border-color: var(--accent); background: var(--bg-elevated); }

.user-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.user-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-tertiary);
}

.user-status.online { background: var(--success); }

.user-ip {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

.user-time {
    font-size: 10px;
    color: var(--text-tertiary);
}

.user-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text-tertiary);
}

.user-badge {
    background: var(--bg-hover);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
}

.user-badge.messages {
    background: rgba(62, 180, 137, 0.15);
    color: var(--accent);
}

.user-badge.browser {
    background: rgba(102, 126, 234, 0.15);
    color: #667eea;
}

.user-badge.os {
    background: rgba(118, 75, 162, 0.15);
    color: #764ba2;
}

/* User Engagement Bar */
.user-engagement {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.engagement-bar {
    flex: 1;
    height: 4px;
    background: var(--bg-hover);
    border-radius: 2px;
    overflow: hidden;
}

.engagement-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.6s ease;
}

.engagement-fill.high {
    background: linear-gradient(90deg, #10b981, #3eb489);
}

.engagement-fill.medium {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.engagement-fill.low {
    background: linear-gradient(90deg, #ef4444, #f87171);
}

.engagement-label {
    font-size: 9px;
    color: var(--text-tertiary);
    white-space: nowrap;
}

/* User Device Info Row */
.user-device-info {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}

.user-badge.device {
    background: rgba(6, 182, 212, 0.15);
    color: #06b6d4;
}

.user-badge.visits {
    background: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
}

/* User Referer */
.user-referer {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 6px;
    padding: 4px 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-size: 10px;
}

.referer-label {
    color: var(--text-tertiary);
}

.referer-value {
    color: var(--accent);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* User Details Row */
.user-details {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    font-size: 10px;
    color: var(--text-tertiary);
    flex-wrap: wrap;
}

.user-detail-item {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.user-detail-item.online-status {
    color: var(--success);
}

.user-detail-item.offline-status {
    color: var(--text-tertiary);
}

.user-chat-count {
    font-weight: 500;
    color: var(--accent);
}

/* Stats Detail */
.stats-detail {
    padding: 12px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    overflow-y: auto;
    flex-shrink: 0;
}

.stat-card {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    border-color: rgba(62, 180, 137, 0.3);
}

.stat-card:hover::after {
    opacity: 1;
}

.stat-card-title {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card-value {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, #667eea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Sparklines */
.stat-sparkline {
    height: 20px;
    margin-top: 8px;
    position: relative;
    overflow: hidden;
}

.sparkline-bar {
    display: inline-block;
    width: 3px;
    margin-right: 1px;
    background: linear-gradient(to top, var(--accent), rgba(102, 126, 234, 0.3));
    border-radius: 1px;
    animation: sparklineGrow 0.6s ease-out;
}

@keyframes sparklineGrow {
    from { height: 0; }
    to { height: var(--height); }
}

/* Activity Indicator */
.activity-indicator {
    display: flex;
    gap: 2px;
    margin-top: 8px;
    height: 20px;
    align-items: flex-end;
}

.activity-dot {
    width: 4px;
    height: 4px;
    background: var(--text-tertiary);
    border-radius: 50%;
    opacity: 0.3;
    transition: all 0.3s ease;
}

.activity-dot.active {
    background: var(--success);
    animation: activityPulse 2s ease-in-out infinite;
    opacity: 1;
}

.activity-dot:nth-child(2) { animation-delay: 0.2s; }
.activity-dot:nth-child(3) { animation-delay: 0.4s; }
.activity-dot:nth-child(4) { animation-delay: 0.6s; }
.activity-dot:nth-child(5) { animation-delay: 0.8s; }

@keyframes activityPulse {
    0%, 100% { 
        transform: scaleY(1); 
        opacity: 0.3; 
    }
    50% { 
        transform: scaleY(3); 
        opacity: 1; 
    }
}

.model-usage { padding: 0 12px 12px; flex-shrink: 0; }

.system-health { padding: 0 12px 12px; flex-shrink: 0; }

.server-info { padding: 0 12px 16px; flex-shrink: 0; }

.server-info-chart {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 12px;
}

.server-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.server-info-item:last-child {
    border-bottom: none;
}

.server-info-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.server-info-value {
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
}

.stat-card-subtitle {
    font-size: 10px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* Stats Summary */
.stats-summary {
    padding: 12px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.summary-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.summary-item {
    text-align: center;
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.summary-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
}

.summary-label {
    display: block;
    font-size: 9px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

/* Enhanced Analytics Section */
.analytics-section {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.analytics-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.analytics-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: var(--accent);
}

.analytics-card.highlight {
    background: linear-gradient(135deg, rgba(62, 180, 137, 0.15) 0%, rgba(102, 126, 234, 0.15) 100%);
    border-color: var(--accent);
}

.analytics-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border-radius: 8px;
    color: var(--accent);
}

.analytics-icon svg {
    color: var(--accent);
}

.analytics-content {
    flex: 1;
}

.analytics-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.analytics-label {
    font-size: 10px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Daily Activity Chart */
.daily-activity {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.daily-chart {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 16px;
}

.daily-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 80px;
    gap: 8px;
    margin-bottom: 8px;
}

.daily-bar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.daily-bar {
    width: 100%;
    min-height: 4px;
    background: linear-gradient(to top, var(--accent), rgba(102, 126, 234, 0.6));
    border-radius: 4px 4px 0 0;
    transition: all 0.3s ease;
    position: relative;
}

.daily-bar:hover {
    background: linear-gradient(to top, var(--accent-hover), var(--accent));
    transform: scaleY(1.05);
}

.daily-bar-value {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    font-weight: 600;
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.daily-bar:hover .daily-bar-value {
    opacity: 1;
}

.daily-bar-label {
    font-size: 9px;
    color: var(--text-tertiary);
    text-align: center;
    white-space: nowrap;
}

/* Distribution Section */
.distribution-section {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.distribution-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.distribution-card {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    width: 100%;
}

.distribution-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.distribution-title svg {
    color: var(--accent);
    flex-shrink: 0;
}

.distribution-chart {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 6px;
    scroll-behavior: smooth;
}

.distribution-chart::-webkit-scrollbar {
    width: 6px;
}

.distribution-chart::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.distribution-chart::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 3px;
    transition: background 0.2s ease;
}

.distribution-chart::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

.distribution-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    background: var(--bg-secondary);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.distribution-item:hover {
    background: var(--bg-elevated);
    transform: translateX(2px);
}

.distribution-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    background: var(--bg-elevated);
    border-radius: 6px;
    flex-shrink: 0;
}

.distribution-name {
    flex: 1;
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.distribution-bar {
    width: 80px;
    height: 8px;
    background: var(--bg-hover);
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
}

.distribution-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
}

.distribution-count {
    font-size: 11px;
    color: var(--text-secondary);
    width: 30px;
    text-align: right;
    flex-shrink: 0;
}

.distribution-percent {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    width: 40px;
    text-align: right;
    flex-shrink: 0;
}

/* Hourly Usage Chart */
.hourly-usage {
    padding: 0 12px 12px;
    flex-shrink: 0;
}

.hourly-chart {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 12px;
    overflow-x: auto;
}

.hourly-bars {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 60px;
    min-width: 100%;
}

.hourly-bar {
    flex: 1;
    min-width: 8px;
    background: linear-gradient(to top, var(--accent), rgba(102, 126, 234, 0.5));
    border-radius: 2px 2px 0 0;
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.hourly-bar:hover {
    background: linear-gradient(to top, var(--accent-hover), var(--accent));
    transform: scaleY(1.05);
}

.hourly-bar.peak {
    background: linear-gradient(to top, #f59e0b, #fbbf24);
}

.hourly-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 9px;
    color: var(--text-tertiary);
}

.hourly-label {
    text-align: center;
}

.usage-chart, .health-chart {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 12px;
}

.health-metrics {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.health-metric {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.health-metric-label {
    font-size: 11px;
    color: var(--text-tertiary);
    font-weight: 500;
}

.health-metric-value {
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 600;
}

.health-progress {
    height: 6px;
    background: var(--bg-hover);
    border-radius: 3px;
    overflow: hidden;
}

.health-progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.health-metric-percent {
    font-size: 10px;
    color: var(--text-tertiary);
    text-align: right;
}

/* Performance Indicators */
.performance-indicators {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.perf-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: var(--bg-hover);
    border-radius: 12px;
    font-size: 10px;
    color: var(--text-secondary);
}

.perf-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.perf-dot.excellent { background: #10b981; }
.perf-dot.good { background: #3b82f6; }
.perf-dot.fair { background: #f59e0b; }
.perf-dot.poor { background: #ef4444; }
.perf-dot.loading { 
    background: var(--text-tertiary);
    animation: pulse-gentle 1.5s ease-in-out infinite;
}

.usage-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.usage-bar-label {
    font-size: 11px;
    color: var(--text-secondary);
    width: 100px;
    flex-shrink: 0;
}

.usage-bar-track {
    flex: 1;
    height: 6px;
    background: var(--bg-hover);
    border-radius: 3px;
    overflow: hidden;
}

.usage-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.usage-bar-value {
    font-size: 11px;
    color: var(--text-tertiary);
    width: 40px;
    text-align: right;
}

/* ===== Main Content ===== */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-primary);
}

.main-header {
    height: var(--header-height);
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
}

.menu-btn:hover { background: var(--bg-tertiary); }

.main-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Smart Breadcrumb Navigation */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.breadcrumb-item {
    color: var(--text-tertiary);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.breadcrumb-item:hover {
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 600;
    background: var(--bg-tertiary);
}

.breadcrumb-separator {
    color: var(--text-tertiary);
    font-size: 12px;
    margin: 0 4px;
}

.breadcrumb-separator::before {
    content: '›';
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 11px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.connection-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse-gentle 2s ease-in-out infinite;
}

.connection-status.disconnected .connection-dot {
    background: var(--error);
    animation: none;
}

.connection-status.reconnecting .connection-dot {
    background: var(--warning);
    animation: pulse-fast 1s ease-in-out infinite;
}

@keyframes pulse-fast {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.last-updated {
    font-size: 11px;
    color: var(--text-muted);
    margin-left: 8px;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    transition: color 0.3s ease;
}

.header-actions {
    display: flex;
    gap: 8px;
}

/* Content Area */
.content-area {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Chats Panel */
.chats-panel {
    width: var(--chats-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: relative;
}

/* Chats Panel Overlay - for mobile */
.chats-panel-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 997;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.chats-panel-overlay.active {
    display: block;
}

.chats-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chats-header span:last-child {
    color: var(--accent);
    font-weight: 500;
}

.chat-count-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    background: var(--accent);
    color: white;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    padding: 0 6px;
    animation: badgePop 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes badgePop {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.chats-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

/* Chat Card */
.chat-card {
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 6px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.chat-card:hover { background: var(--bg-elevated); }
.chat-card.active { border-color: var(--accent); background: var(--bg-elevated); }

.chat-card-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--text-tertiary);
}

.chat-card-status {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-tertiary);
}

.chat-card-status.active { background: var(--success); }

/* Chat View */
.chat-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-view-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-secondary);
}

.chat-info h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.chat-info p {
    font-size: 11px;
    color: var(--text-tertiary);
}

.chat-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.chat-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 6px;
}

.chat-actions .btn span {
    margin: 0;
}

.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* ===== Messages - EXACT MATCH with User Side ===== */
.message {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    max-width: 100%;
}

.message.user { flex-direction: row-reverse; }

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 600;
}

.message.user .message-avatar {
    background: var(--user-avatar);
    color: white;
}

.message.assistant .message-avatar {
    background: var(--ai-avatar);
    color: white;
}

.message-wrapper {
    max-width: 85%;
    min-width: 0;
}

.message.user .message-wrapper { text-align: right; }

.message-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    font-size: 12px;
}

.message.user .message-header { justify-content: flex-end; }

.message-role {
    font-weight: 600;
    color: var(--text-primary);
}

.model-badge {
    background: var(--bg-elevated);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 500;
}

.internet-badge {
    background: rgba(62, 180, 137, 0.15);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 9px;
}

.message-time {
    color: var(--text-tertiary);
    font-size: 10px;
}

/* Message Content */
.message-content {
    padding: 12px 16px;
    border-radius: 18px;
    line-height: 1.6;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.message.user .message-content {
    background: var(--user-bubble);
    color: white;
    border-radius: 18px 18px 4px 18px;
    display: inline-block;
}

.message.assistant .message-content {
    background: transparent;
    color: var(--text-primary);
    padding: 0;
}

/* Message Typography - Match User Side */
.message-content p { margin: 0 0 12px; }
.message-content p:last-child { margin-bottom: 0; }

.message-content h1, .message-content h2, .message-content h3,
.message-content h4, .message-content h5, .message-content h6 {
    margin: 20px 0 10px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.message-content h1 { 
    font-size: 1.6em; 
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent);
}
.message-content h2 { 
    font-size: 1.4em;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}
.message-content h3 { 
    font-size: 1.2em;
    color: var(--accent);
}
.message-content h4 { font-size: 1.1em; }
.message-content h5, .message-content h6 { font-size: 1em; color: var(--text-secondary); }

.message-content ul, .message-content ol {
    margin: 12px 0;
    padding-left: 28px;
}

.message-content li { 
    margin: 6px 0; 
    line-height: 1.6;
}

.message-content li::marker {
    color: var(--accent);
}

.message-content blockquote {
    border-left: 4px solid var(--accent);
    padding: 12px 16px;
    margin: 16px 0;
    background: rgba(102, 126, 234, 0.08);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.message-content blockquote p {
    margin: 0;
}

.message-content a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.message-content a:hover { 
    border-bottom-color: var(--accent);
}

.message-content strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-content em {
    font-style: italic;
    color: var(--text-secondary);
}

.message-content hr {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-secondary) 100%);
    margin: 20px 0;
    border-radius: 1px;
}

/* Inline Code */
.message-content code:not(.code-content code) {
    background: var(--bg-tertiary);
    color: var(--accent-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Fira Code', 'SF Mono', Monaco, Consolas, monospace;
    font-size: 0.9em;
}

/* Code Blocks - Professional Styling */
.code-block {
    background: #1e293b;
    border-radius: 12px;
    overflow: hidden;
    margin: 16px 0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.code-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 10px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-language {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.code-copy-btn {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.2s;
}

.code-copy-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
}

.code-copy-btn.copied {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.code-content {
    padding: 20px;
    overflow-x: auto;
    background: #0f172a;
}

.code-content code {
    font-family: 'Fira Code', 'SF Mono', Monaco, Consolas, monospace;
    font-size: 13px;
    line-height: 1.7;
    color: #e2e8f0;
    white-space: pre;
    display: block;
}

/* Math Blocks */
.math-block {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    padding: 20px 24px;
    border-radius: 12px;
    margin: 16px 0;
    overflow-x: auto;
    text-align: center;
    border-left: 4px solid var(--accent);
    font-size: 1.1em;
}

.math-block.math-fallback {
    font-family: 'Times New Roman', Georgia, serif;
    font-style: italic;
    font-size: 1.2em;
    color: var(--text-primary);
}

.math-inline { 
    display: inline;
    padding: 2px 6px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 4px;
}

.math-inline.math-fallback {
    font-family: 'Times New Roman', Georgia, serif;
    font-style: italic;
}

/* KaTeX overrides for admin panel */
.katex { font-size: 1.1em; }
.katex-display { margin: 0; overflow-x: auto; overflow-y: hidden; }
.math-block .katex-display { margin: 0; }
.math-block .katex-display > .katex { white-space: normal; }

/* Math symbols styling */
.math-symbol {
    font-family: 'Times New Roman', Georgia, 'Cambria Math', serif;
    font-size: 1.05em;
    color: var(--accent);
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin: 12px 0;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.message-content th, .message-content td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.message-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

.message-content tr:last-child td { border-bottom: none; }
.message-content tr:hover td { background: var(--bg-tertiary); }

/* Attachments */
.message-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
}

.attachment-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

.attachment-chip svg { color: var(--accent); }

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-tertiary);
    text-align: center;
    padding: 40px;
    animation: fadeIn 0.5s ease;
}

.enhanced-empty-state {
    padding: 60px 40px;
}

.enhanced-empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 16px 0 8px;
}

.enhanced-empty-state p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    max-width: 280px;
    line-height: 1.5;
}

.enhanced-empty-state .btn {
    margin-top: 8px;
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
    animation: float 3s ease-in-out infinite;
}

.empty-state p {
    font-size: 14px;
    max-width: 240px;
}

/* No Data */
.no-data {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-tertiary);
    font-size: 13px;
}

/* ===== Loading States ===== */
.loading-skeleton { padding: 8px; }

.skeleton-item {
    height: 60px;
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-elevated) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
    margin-bottom: 8px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== Toast Notifications ===== */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    position: relative;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    max-width: 320px;
    overflow: hidden;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--error); }
.toast.warning { border-color: var(--warning); }

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--error); }
.toast.warning .toast-icon { color: var(--warning); }

.toast-message {
    flex: 1;
    font-size: 13px;
    color: var(--text-primary);
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.toast-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

@keyframes toast-progress {
    from { width: 100%; }
    to { width: 0%; }
}

/* ===== Dialog ===== */
.dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    backdrop-filter: blur(4px);
}

.dialog-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    animation: scaleIn 0.2s ease;
}

@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.dialog-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dialog-icon.warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.dialog-icon.danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.dialog-icon.help {
    background: rgba(102, 126, 234, 0.15);
    color: var(--accent);
}

.help-dialog {
    max-width: 500px;
    width: 95%;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin: 20px 0;
    text-align: left;
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    border: 1px solid var(--border);
}

.shortcut-item kbd {
    background: var(--bg-elevated);
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--border);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.shortcut-item span {
    color: var(--text-secondary);
    font-size: 13px;
}

.dialog-box h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.dialog-box p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.dialog-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.dialog-actions .btn { min-width: 100px; }

/* ===== Sidebar Overlay (Mobile) ===== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

.sidebar-overlay.active { display: block; }

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .chats-panel { width: 240px; }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 100;
        transform: translateX(-100%);
    }
    
    .sidebar.open { transform: translateX(0); }
    
    .menu-btn { display: block; }
    
    .chats-panel {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 98;
        width: 280px;
        transform: translateX(-100%);
        transition: transform 0.3s var(--ease-out-expo);
    }
    
    .chats-panel.open { transform: translateX(0); }
    
    .header-actions .btn span { display: none; }
    .header-actions .btn { padding: 8px; }
    
    .content-area { flex-direction: column; }
    
    .chat-view { width: 100%; }
}

@media (max-width: 480px) {
    .login-box { padding: 24px; margin: 16px; }
    
    .stats-row { flex-wrap: wrap; }
    .stat-box { min-width: calc(50% - 4px); }
    
    .message-wrapper { max-width: 95%; }
}

/* ===== Selection ===== */
::selection {
    background: rgba(62, 180, 137, 0.3);
    color: inherit;
}

/* ===== Focus States ===== */
button:focus-visible, input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ===== Animations ===== */
.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ===== Performance Optimizations ===== */
.user-list, .chats-list, .messages-area {
    contain: layout style paint;
    will-change: scroll-position;
}

.message {
    contain: layout style;
}

/* ===== Auto-refresh Indicator ===== */
.auto-refresh-indicator {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(62, 180, 137, 0.15);
    color: var(--success);
    margin-left: 8px;
    animation: pulse-gentle 3s ease-in-out infinite;
}

.auto-refresh-indicator svg {
    animation: rotate-slow 8s linear infinite;
}

@keyframes pulse-gentle {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== Enhanced Micro-interactions ===== */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* ===== Smart Hover Effects ===== */
.user-card, .chat-card {
    transform-origin: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.user-card:hover, .chat-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.user-card:active, .chat-card:active {
    transform: translateY(0px) scale(0.98);
}

/* ===== Enhanced Loading States ===== */
.loading-skeleton {
    position: relative;
    overflow: hidden;
}

.skeleton-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ===== Smart Status Transitions ===== */
.user-status, .chat-card-status {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.user-status.online {
    box-shadow: 0 0 8px rgba(62, 180, 137, 0.6);
}

/* ===== Enhanced Focus States ===== */
.user-card:focus-visible, .chat-card:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 0 0 2px var(--accent), 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ===== Smooth Scrollbar ===== */
.user-list, .chats-list, .messages-area {
    scroll-behavior: smooth;
}

.user-list::-webkit-scrollbar-thumb, 
.chats-list::-webkit-scrollbar-thumb, 
.messages-area::-webkit-scrollbar-thumb {
    transition: background 0.2s ease;
}

/* ===== Enhanced Toast Animations ===== */
.toast {
    transform: translateX(100%);
    animation: slideInRight 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast.removing {
    animation: slideOutRight 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideInRight {
    to { transform: translateX(0); }
}

@keyframes slideOutRight {
    to { transform: translateX(100%); opacity: 0; }
}

/* ===== Improved Loading States ===== */
.loading-pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== Enhanced Status Indicators ===== */
.status-indicator {
    position: relative;
    display: inline-block;
}

.status-indicator::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    border: 2px solid var(--bg-secondary);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

/* ===== Improved Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .auto-refresh-indicator svg,
    .btn.spinning svg,
    .sparkline-bar,
    .activity-dot,
    .perf-dot.loading {
        animation: none !important;
    }
}

/* ===== Enhanced Focus States ===== */
.user-card:focus-visible, .chat-card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 8px;
}

/* ===== Improved Scrollbar for Webkit ===== */
.user-list::-webkit-scrollbar, .chats-list::-webkit-scrollbar, .messages-area::-webkit-scrollbar {
    width: 8px;
}

.user-list::-webkit-scrollbar-track, .chats-list::-webkit-scrollbar-track, .messages-area::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.user-list::-webkit-scrollbar-thumb, .chats-list::-webkit-scrollbar-thumb, .messages-area::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 4px;
    border: 2px solid var(--bg-tertiary);
}

.user-list::-webkit-scrollbar-thumb:hover, .chats-list::-webkit-scrollbar-thumb:hover, .messages-area::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ===== Search Highlighting ===== */
mark {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
    color: var(--text-primary);
    padding: 1px 2px;
    border-radius: 2px;
    font-weight: 500;
}

/* ===== Enhanced Model Usage Chart ===== */
.usage-bar {
    position: relative;
    overflow: hidden;
}

.usage-bar-fill {
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.usage-bar-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ===== Enhanced Status Indicators ===== */
.user-status.online::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    background: var(--success);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
    75%, 100% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
}

/* ===== Enhanced Rich Tooltips ===== */
[title] {
    position: relative;
    cursor: help;
}

[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 1000;
    border: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    animation: tooltipFadeIn 0.2s ease;
    max-width: 250px;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
}

[title]:hover::before {
    content: '';
    position: absolute;
    bottom: 94%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--border);
    z-index: 1000;
}

@keyframes tooltipFadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(4px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Stat box hover enhancement */
.stat-box {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: help;
}

.stat-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.15);
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-elevated) 100%);
}

/* ===== Enhanced Empty States ===== */
.empty-state {
    animation: fadeIn 0.5s ease;
}

.empty-state svg {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

/* ===== Enhanced Button States ===== */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn.spinning svg {
    animation: spin 1s linear infinite;
}

/* ===== Enhanced Card Hover Effects ===== */
.user-card, .chat-card {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.user-card::before, .chat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 8px;
    padding: 1px;
    background: linear-gradient(135deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.user-card:hover::before, .chat-card:hover::before {
    opacity: 1;
}

/* ===== Enhanced Scrollbar Styling ===== */
.user-list, .chats-list, .messages-area {
    scrollbar-width: thin;
    scrollbar-color: var(--text-tertiary) var(--bg-tertiary);
}

/* ===== Performance Optimizations ===== */
.message-content {
    contain: layout style;
}

.code-block {
    contain: layout style paint;
}

/* ===== Dark Mode Enhancements ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --shadow-color: rgba(0, 0, 0, 0.5);
    }
}

/* ===== High DPI Display Optimizations ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .user-status, .chat-card-status {
        border: 0.5px solid rgba(255, 255, 255, 0.1);
    }
}

/* KaTeX overrides */
.katex { font-size: 1.1em; }
.katex-display { margin: 16px 0; overflow-x: auto; }

/* Print styles */
@media print {
    .sidebar, .chats-panel, .main-header { display: none !important; }
    .chat-view { width: 100% !important; }
    .messages-area { overflow: visible !important; }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border: #4a5568;
        --text-secondary: #cbd5e0;
    }
}


/* ===== Real-time Metrics Section ===== */
.realtime-section {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

.realtime-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.realtime-card {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-elevated) 100%);
    border-radius: 10px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.realtime-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    border-color: var(--accent);
}

.realtime-icon {
    font-size: 24px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 8px;
    flex-shrink: 0;
    color: var(--accent);
}

.realtime-icon svg {
    color: inherit;
}

.realtime-icon.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.realtime-info {
    flex: 1;
}

.realtime-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
}

.realtime-label {
    font-size: 10px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* ===== Engagement Section ===== */
.engagement-section {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

.engagement-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.engagement-card {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    min-width: 0;
    overflow: hidden;
}

.engagement-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.engagement-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.engagement-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent);
}

.engagement-icon svg {
    color: var(--accent);
}

.engagement-title {
    font-size: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.engagement-value {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, #667eea 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.engagement-sub {
    font-size: 10px;
    color: var(--text-tertiary);
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.engagement-sub span {
    color: var(--accent);
    font-weight: 600;
}

/* ===== Error Section ===== */
.error-section {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

.error-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.error-card {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.error-card:hover {
    border-color: var(--warning);
}

.error-icon {
    font-size: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 8px;
    flex-shrink: 0;
    color: var(--text-secondary);
}

.error-icon svg {
    color: inherit;
}

.error-content {
    flex: 1;
}

.error-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.error-label {
    font-size: 10px;
    color: var(--text-tertiary);
    text-transform: uppercase;
}

/* ===== Top Users Section ===== */
.top-users-section {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

.top-users-chart {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 12px;
}

.top-user-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.2s ease;
}

.top-user-item:last-child {
    margin-bottom: 0;
}

.top-user-item:hover {
    background: var(--bg-elevated);
    transform: translateX(4px);
}

.top-user-rank {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent) 0%, #667eea 100%);
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    color: white;
}

.top-user-rank.gold {
    background: linear-gradient(135deg, #ffd700 0%, #ffb347 100%);
}

.top-user-rank.silver {
    background: linear-gradient(135deg, #c0c0c0 0%, #a8a8a8 100%);
}

.top-user-rank.bronze {
    background: linear-gradient(135deg, #cd7f32 0%, #b87333 100%);
}

.top-user-info {
    flex: 1;
    min-width: 0;
}

.top-user-ip {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.top-user-stats {
    display: flex;
    gap: 12px;
    font-size: 10px;
    color: var(--text-tertiary);
}

.top-user-stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

.top-user-stat span {
    color: var(--accent);
    font-weight: 600;
}

/* ===== User Type Badge ===== */
.user-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
}

.user-type-badge.new {
    background: rgba(62, 180, 137, 0.15);
    color: var(--accent);
}

.user-type-badge.returning {
    background: rgba(102, 126, 234, 0.15);
    color: #667eea;
}

.user-type-badge.power {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 179, 71, 0.2) 100%);
    color: #ffd700;
}

.user-type-badge.dormant {
    background: rgba(107, 133, 153, 0.15);
    color: var(--text-tertiary);
}

/* ===== User Card Enhancements ===== */
.user-card-extra {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}

.user-extra-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 6px;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-size: 9px;
    color: var(--text-tertiary);
}

.user-extra-badge.country {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.user-extra-badge.screen {
    background: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
}

.user-extra-badge.tokens {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.user-extra-badge.model {
    background: rgba(236, 72, 153, 0.15);
    color: #ec4899;
}

.user-extra-badge.error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.user-extra-badge.city {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.user-extra-badge.theme {
    background: rgba(99, 102, 241, 0.15);
    color: #6366f1;
}

.user-extra-badge.dnt {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
}

/* Bounce Status Badge */
.user-badge.bounce {
    font-size: 9px;
}

.user-badge.bounce.bounced {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
}

.user-badge.bounce.engaged {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

/* Mini Activity Chart */
.user-activity-mini {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.activity-mini-label {
    font-size: 9px;
    color: var(--text-tertiary);
    display: block;
    margin-bottom: 4px;
}

.activity-mini-chart {
    display: flex;
    align-items: flex-end;
    gap: 1px;
    height: 20px;
    background: var(--bg-secondary);
    border-radius: 4px;
    padding: 2px;
}

.mini-bar {
    flex: 1;
    min-width: 2px;
    background: linear-gradient(to top, var(--accent), rgba(62, 180, 137, 0.4));
    border-radius: 1px;
    transition: all 0.2s ease;
}

.mini-bar.peak {
    background: linear-gradient(to top, #f59e0b, #fbbf24);
}

.mini-bar:hover {
    transform: scaleY(1.2);
    opacity: 0.9;
}

/* Enhanced User Card Styles */
.user-card {
    transition: all 0.25s var(--ease-out-expo);
}

.user-card:hover {
    transform: translateX(4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.user-card.active {
    border-left: 3px solid var(--accent);
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-tertiary) 100%);
}

/* Response Time Badge */
.user-badge.response-time {
    background: rgba(6, 182, 212, 0.15);
    color: #06b6d4;
}

/* ===== Model Performance Card ===== */
.model-perf-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.model-perf-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.model-perf-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.model-perf-requests {
    font-size: 10px;
    color: var(--text-tertiary);
}

.model-perf-stats {
    display: flex;
    gap: 12px;
    font-size: 10px;
}

.model-perf-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.model-perf-stat-label {
    color: var(--text-tertiary);
    text-transform: uppercase;
    font-size: 8px;
}

.model-perf-stat-value {
    color: var(--accent);
    font-weight: 600;
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 768px) {
    .realtime-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .error-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .engagement-grid {
        grid-template-columns: 1fr;
    }
    
    .insights-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 400px) {
    .realtime-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .error-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .realtime-card {
        padding: 10px 6px;
    }
    
    .realtime-value {
        font-size: 18px;
    }
    
    .realtime-label {
        font-size: 8px;
    }
}

/* ===== User Insights Section ===== */
.user-insights-section {
    padding: 0 12px 12px;
    flex-shrink: 0;
}

.insights-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.insight-card {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: all 0.2s ease;
    width: 100%;
}

.insight-card:hover {
    background: var(--bg-elevated);
    transform: translateY(-2px);
}

.insight-icon {
    width: 42px;
    height: 42px;
    min-width: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 10px;
    color: var(--accent);
}

.insight-icon svg {
    color: var(--accent);
}

.insight-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.insight-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.insight-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
    text-align: right;
}

/* ===== Weekly Heatmap Section ===== */
.heatmap-section {
    padding: 0 12px 12px;
    flex-shrink: 0;
}

.weekly-heatmap {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    overflow-x: auto;
}

.heatmap-grid {
    display: grid;
    grid-template-columns: 40px repeat(24, 1fr);
    gap: 2px;
    min-width: 500px;
}

.heatmap-row {
    display: contents;
}

.heatmap-day-label {
    font-size: 10px;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    padding-right: 8px;
}

.heatmap-cell {
    aspect-ratio: 1;
    border-radius: 3px;
    background: var(--bg-secondary);
    transition: all 0.2s ease;
    cursor: pointer;
    min-width: 12px;
    min-height: 12px;
}

.heatmap-cell:hover {
    transform: scale(1.2);
    z-index: 1;
}

.heatmap-cell.level-0 { background: var(--bg-secondary); }
.heatmap-cell.level-1 { background: rgba(62, 180, 137, 0.2); }
.heatmap-cell.level-2 { background: rgba(62, 180, 137, 0.4); }
.heatmap-cell.level-3 { background: rgba(62, 180, 137, 0.6); }
.heatmap-cell.level-4 { background: rgba(62, 180, 137, 0.8); }
.heatmap-cell.level-5 { background: var(--accent); }

.heatmap-hour-labels {
    display: grid;
    grid-template-columns: 40px repeat(24, 1fr);
    gap: 2px;
    margin-top: 4px;
}

.heatmap-hour-label {
    font-size: 8px;
    color: var(--text-tertiary);
    text-align: center;
}

.heatmap-legend {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 4px;
    margin-top: 10px;
    font-size: 10px;
    color: var(--text-tertiary);
}

.heatmap-legend-cell {
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.heatmap-legend-cell.level-0 { background: var(--bg-secondary); }
.heatmap-legend-cell.level-1 { background: rgba(62, 180, 137, 0.2); }
.heatmap-legend-cell.level-2 { background: rgba(62, 180, 137, 0.4); }
.heatmap-legend-cell.level-3 { background: rgba(62, 180, 137, 0.6); }
.heatmap-legend-cell.level-4 { background: rgba(62, 180, 137, 0.8); }
.heatmap-legend-cell.level-5 { background: var(--accent); }

/* ===== Enhanced Distribution Grid ===== */
.distribution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.distribution-card {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    width: 100%;
    transition: all 0.2s ease;
}

.distribution-card:hover {
    background: var(--bg-elevated);
}


/* ===== User Details Panel ===== */
.user-details-panel {
    width: 320px;
    min-width: 320px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.user-details-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
}

.user-details-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.btn-close-panel {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.btn-close-panel:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.user-details-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* User Profile Card */
.user-profile-card {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-elevated) 100%);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

.user-profile-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}

.user-profile-avatar {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent) 0%, #667eea 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.user-profile-info {
    flex: 1;
    min-width: 0;
}

.user-profile-ip {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    word-break: break-all;
}

.user-profile-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
}

.user-profile-status .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-tertiary);
}

.user-profile-status .status-dot.online {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* User Stats Grid */
.user-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.user-stat-item {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
}

.user-stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.2;
}

.user-stat-label {
    font-size: 10px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* User Info Sections */
.user-info-section {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    margin-bottom: 12px;
}

.user-info-section-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.user-info-section-title svg {
    color: var(--accent);
}

.user-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.user-info-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.user-info-row:first-of-type {
    padding-top: 0;
}

.user-info-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.user-info-value {
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
    max-width: 60%;
    word-break: break-word;
}

.user-info-value.highlight {
    color: var(--accent);
}

.user-info-value.error {
    color: var(--error);
}

.user-info-value.warning {
    color: var(--warning);
}

/* User Activity Timeline */
.user-activity-timeline {
    margin-top: 8px;
}

.activity-hour-bar {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 40px;
    padding: 4px 0;
}

.activity-hour {
    flex: 1;
    background: linear-gradient(to top, var(--accent), rgba(62, 180, 137, 0.3));
    border-radius: 2px;
    min-height: 4px;
    transition: all 0.2s ease;
}

.activity-hour:hover {
    opacity: 0.8;
    transform: scaleY(1.1);
}

.activity-hour.peak {
    background: linear-gradient(to top, #f59e0b, #fbbf24);
}

.activity-hour-labels {
    display: flex;
    justify-content: space-between;
    font-size: 9px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* User Tags */
.user-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.user-tag {
    padding: 4px 10px;
    background: var(--bg-secondary);
    border-radius: 12px;
    font-size: 11px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.user-tag.new { background: rgba(59, 130, 246, 0.15); color: #3b82f6; border-color: rgba(59, 130, 246, 0.3); }
.user-tag.returning { background: rgba(62, 180, 137, 0.15); color: var(--accent); border-color: rgba(62, 180, 137, 0.3); }
.user-tag.power { background: rgba(168, 85, 247, 0.15); color: #a855f7; border-color: rgba(168, 85, 247, 0.3); }
.user-tag.dormant { background: rgba(107, 114, 128, 0.15); color: #6b7280; border-color: rgba(107, 114, 128, 0.3); }

/* Responsive */
@media (max-width: 1200px) {
    .user-details-panel {
        width: 280px;
        min-width: 280px;
    }
}

@media (max-width: 900px) {
    .user-details-panel {
        display: none;
    }
}

/* ==================== MOBILE OPTIMIZATION ==================== */
/* Comprehensive mobile styles for admin panel */

@media (max-width: 768px) {
    /* ===== App Layout ===== */
    .app {
        flex-direction: column;
    }
    
    /* ===== Main Header Mobile - CRITICAL FIX ===== */
    .main-header {
        height: auto;
        min-height: 56px;
        padding: 10px 12px;
        padding-left: 56px; /* Space for mobile menu button */
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .header-left {
        flex: 1;
        min-width: 0;
        gap: 8px;
        flex-wrap: wrap;
    }
    
    .menu-btn {
        display: none; /* We use mobileMenuBtn instead */
    }
    
    .breadcrumb {
        font-size: 13px;
        order: 1;
    }
    
    .breadcrumb-item {
        padding: 2px 6px;
        font-size: 13px;
    }
    
    .connection-status {
        order: 2;
        padding: 3px 6px;
        font-size: 10px;
    }
    
    .connection-status span {
        display: none; /* Hide "Connected" text on mobile */
    }
    
    .connection-dot {
        width: 8px;
        height: 8px;
    }
    
    .last-updated {
        order: 3;
        font-size: 10px;
        padding: 2px 6px;
        white-space: nowrap;
    }
    
    .auto-refresh-indicator {
        order: 4;
        width: 18px;
        height: 18px;
    }
    
    .auto-refresh-indicator svg {
        width: 10px;
        height: 10px;
    }
    
    /* ===== Header Actions Mobile - CRITICAL FIX ===== */
    .header-actions {
        display: flex;
        gap: 4px;
        flex-shrink: 0;
    }
    
    .header-actions .btn {
        padding: 8px;
        min-width: 36px;
        height: 36px;
    }
    
    .header-actions .btn span {
        display: none;
    }
    
    .header-actions .btn svg {
        width: 18px;
        height: 18px;
    }
    
    /* Hide less important buttons on very small screens */
    .header-actions #helpBtn {
        display: none;
    }
    
    /* ===== Sidebar Mobile ===== */
    .sidebar {
        width: 100%;
        max-width: 320px;
        height: 100vh;
        max-height: 100vh;
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s var(--ease-out-expo);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    /* ===== Mobile Menu Button ===== */
    .mobile-menu-btn {
        display: flex !important;
        position: fixed;
        top: 10px;
        left: 10px;
        z-index: 999;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        background: var(--bg-elevated);
        border: 1px solid var(--border);
        border-radius: 10px;
        color: var(--text-primary);
        cursor: pointer;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    .mobile-menu-btn:active {
        transform: scale(0.95);
        background: var(--bg-hover);
    }
    
    .mobile-menu-btn svg {
        width: 22px;
        height: 22px;
    }
    
    /* ===== Sidebar Overlay ===== */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.6);
        z-index: 999;
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    /* ===== Panel Close Button ===== */
    .panel-close-btn {
        display: flex !important;
        position: absolute;
        top: 12px;
        right: 12px;
        width: 36px;
        height: 36px;
        align-items: center;
        justify-content: center;
        background: var(--bg-tertiary);
        border: 1px solid var(--border);
        border-radius: 8px;
        color: var(--text-secondary);
        cursor: pointer;
        z-index: 10;
    }
    
    .panel-close-btn:active {
        background: var(--bg-hover);
    }
    
    /* ===== Sidebar Header Mobile ===== */
    .sidebar-header {
        padding: 14px 16px;
        padding-right: 56px; /* Space for close button */
    }
    
    .logo-section h1 {
        font-size: 15px;
    }
    
    /* ===== Main Content Mobile ===== */
    .main {
        width: 100%;
        height: 100vh;
        overflow: hidden;
    }
    
    .content-area {
        flex-direction: column;
        height: calc(100vh - 56px);
        overflow: hidden;
    }
    
    /* ===== Chat View Mobile ===== */
    .chat-view {
        flex: 1;
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    
    .empty-state {
        padding: 20px;
    }
    
    .empty-state svg {
        width: 48px;
        height: 48px;
    }
    
    .empty-state p {
        font-size: 13px;
    }
    
    /* ===== Stats Row Mobile ===== */
    .stats-row {
        flex-wrap: wrap;
        padding: 10px 12px;
        gap: 6px;
    }
    
    .stat-box {
        flex: 1 1 calc(50% - 6px);
        min-width: calc(50% - 6px);
        padding: 10px 8px;
    }
    
    .stat-val {
        font-size: 18px;
    }
    
    .stat-lbl {
        font-size: 9px;
    }
    
    /* ===== Sidebar Tabs Mobile ===== */
    .sidebar-tabs {
        padding: 6px 12px;
        gap: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        padding: 8px 12px;
        font-size: 11px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .tab-shortcut {
        display: none;
    }
    
    /* ===== Search Box Mobile ===== */
    .search-box {
        margin: 6px 10px;
        padding: 10px 12px;
    }
    
    .search-box input {
        font-size: 16px; /* Prevents iOS zoom */
    }
    
    /* ===== User List Mobile ===== */
    .user-list {
        padding: 0 6px 6px;
    }
    
    .user-card {
        padding: 10px;
        margin-bottom: 4px;
    }
    
    .user-ip {
        font-size: 12px;
    }
    
    .user-meta {
        flex-wrap: wrap;
        gap: 4px;
    }
    
    .user-badge {
        font-size: 9px;
        padding: 2px 5px;
    }
    
    /* ===== Stats Detail Mobile ===== */
    .stats-detail {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding: 10px;
    }
    
    .stat-card {
        padding: 10px;
    }
    
    .stat-card-value {
        font-size: 18px;
    }
    
    /* ===== Analytics Grid Mobile ===== */
    .analytics-grid {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    
    .analytics-card {
        padding: 10px;
    }
    
    .analytics-value {
        font-size: 16px;
    }
    
    /* ===== Distribution Section Mobile ===== */
    .distribution-section {
        padding: 10px;
    }
    
    .distribution-card {
        padding: 10px;
    }
    
    .distribution-bar {
        width: 60px;
    }
    
    .distribution-name {
        font-size: 11px;
    }
    
    /* ===== Daily Activity Mobile ===== */
    .daily-activity {
        padding: 10px;
    }
    
    .daily-chart {
        padding: 12px;
    }
    
    .daily-bars {
        height: 60px;
        gap: 4px;
    }
    
    /* ===== Chats Panel Mobile ===== */
    .chats-panel {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        z-index: 998;
        transform: translateX(-100%);
        transition: transform 0.3s var(--ease-out-expo);
    }
    
    .chats-panel.open {
        transform: translateX(0);
    }
    
    .chats-panel .chats-header {
        padding-right: 56px; /* Space for close button */
    }
    
    .chats-panel .panel-close-btn {
        display: flex !important;
    }
    
    .chat-header {
        padding: 12px;
        padding-left: 60px; /* Space for menu button */
    }
    
    .chat-header-info h2 {
        font-size: 14px;
    }
    
    .chat-header-info span {
        font-size: 11px;
    }
    
    /* ===== Messages Area Mobile ===== */
    .messages-area {
        padding: 12px;
    }
    
    .message-wrapper {
        max-width: 90%;
    }
    
    .message-content {
        font-size: 14px;
        padding: 10px 12px;
    }
    
    .message-meta {
        font-size: 10px;
    }
    
    /* ===== User Details Panel Mobile ===== */
    .user-details-panel {
        position: fixed;
        right: 0;
        top: 0;
        bottom: 0;
        width: 100%;
        max-width: 100%;
        z-index: 997;
        transform: translateX(100%);
        transition: transform 0.3s var(--ease-out-expo);
        display: block !important;
    }
    
    .user-details-panel.open {
        transform: translateX(0);
    }
    
    .user-details-header {
        padding: 12px;
    }
    
    .user-details-content {
        padding: 12px;
    }
    
    /* ===== Login Box Mobile ===== */
    .login-box {
        padding: 24px 20px;
        margin: 16px;
        max-width: calc(100% - 32px);
        border-radius: 16px;
    }
    
    .login-box h2 {
        font-size: 22px;
    }
    
    .login-box p {
        font-size: 13px;
    }
    
    .input-group input {
        padding: 14px 16px;
        font-size: 16px; /* Prevents iOS zoom */
    }
    
    .btn-primary {
        padding: 14px;
        font-size: 14px;
    }
    
    /* ===== Dropdown Mobile ===== */
    .dropdown-menu {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        margin: 0;
        border-radius: 16px 16px 0 0;
        max-height: 60vh;
        overflow-y: auto;
        transform: translateY(100%);
    }
    
    .dropdown.open .dropdown-menu {
        transform: translateY(0);
    }
    
    .dropdown-item {
        padding: 14px 16px;
        font-size: 14px;
    }
    
    /* ===== Realtime Grid Mobile ===== */
    .realtime-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .realtime-card {
        padding: 12px;
    }
    
    .realtime-value {
        font-size: 20px;
    }
    
    /* ===== Summary Grid Mobile ===== */
    .summary-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .summary-item {
        padding: 6px;
    }
    
    .summary-value {
        font-size: 14px;
    }
    
    .summary-label {
        font-size: 8px;
    }
    
    /* ===== Section Titles Mobile ===== */
    .section-title {
        padding: 6px 12px;
        font-size: 10px;
    }
    
    /* ===== Hourly Usage Mobile ===== */
    .hourly-chart {
        padding: 10px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .hourly-bars {
        min-width: 400px;
        height: 50px;
    }
    
    /* ===== Model Usage Mobile ===== */
    .usage-chart {
        padding: 10px;
    }
    
    .usage-bar {
        height: 24px;
    }
    
    /* ===== Health Metrics Mobile ===== */
    .health-chart {
        padding: 10px;
    }
    
    .health-metric-label {
        font-size: 10px;
    }
    
    .health-metric-value {
        font-size: 12px;
    }
    
    /* ===== Server Info Mobile ===== */
    .server-info-chart {
        padding: 10px;
    }
    
    .server-info-item {
        padding: 6px 0;
    }
    
    .server-info-label,
    .server-info-value {
        font-size: 11px;
    }
    
    /* ===== Touch Improvements ===== */
    .btn, .tab-btn, .user-card, .chat-item, .dropdown-item {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    /* ===== Scrolling Improvements ===== */
    .user-list, .chats-list, .messages-area, .tab-content {
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }
    
    /* ===== Safe Area Padding ===== */
    .sidebar {
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .chat-view {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

/* ===== Extra Small Devices ===== */
@media (max-width: 400px) {
    .stats-row {
        padding: 8px;
        gap: 4px;
    }
    
    .stat-box {
        padding: 8px 6px;
    }
    
    .stat-val {
        font-size: 16px;
    }
    
    .stat-lbl {
        font-size: 8px;
    }
    
    .analytics-grid {
        gap: 4px;
    }
    
    .analytics-card {
        padding: 8px;
        gap: 8px;
    }
    
    .analytics-icon {
        width: 32px;
        height: 32px;
    }
    
    .analytics-value {
        font-size: 14px;
    }
    
    .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .realtime-grid {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }
    
    .realtime-card {
        padding: 10px;
    }
    
    .realtime-value {
        font-size: 18px;
    }
    
    .distribution-bar {
        width: 50px;
    }
    
    .distribution-count,
    .distribution-percent {
        font-size: 10px;
    }
    
    .user-details-panel {
        padding: 10px;
    }
    
    .message-content {
        font-size: 13px;
        padding: 8px 10px;
    }
}

/* ===== Landscape Mobile ===== */
@media (max-width: 768px) and (orientation: landscape) {
    .sidebar {
        width: 50%;
        max-width: 320px;
    }
    
    .chats-panel {
        width: 50%;
        max-width: 280px;
    }
    
    .daily-bars {
        height: 50px;
    }
    
    .stats-row {
        flex-wrap: nowrap;
    }
    
    .stat-box {
        flex: 1;
        min-width: auto;
    }
}

/* ===== Hide Desktop-Only Elements on Mobile ===== */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }
    
    .mobile-only {
        display: block !important;
    }
}

/* ===== Show Mobile-Only Elements ===== */
.mobile-only {
    display: none;
}

.mobile-menu-btn {
    display: none;
}

.panel-close-btn {
    display: none;
}

/* ==================== PREMIUM MOBILE OPTIMIZATION v2.0 ==================== */
/* Fixes for cluttered header and overall mobile UX */

@media (max-width: 768px) {
    /* ===== CRITICAL: Main Header Mobile Fix ===== */
    .main-header {
        height: auto !important;
        min-height: 52px;
        padding: 8px 12px !important;
        padding-left: 52px !important; /* Space for hamburger menu */
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: 6px !important;
        align-items: center !important;
        justify-content: space-between !important;
    }
    
    /* Header Left - Clean Layout */
    .header-left {
        display: flex !important;
        flex-direction: row !important;
        align-items: center !important;
        gap: 6px !important;
        flex: 1 !important;
        min-width: 0 !important;
        overflow: hidden !important;
    }
    
    /* Breadcrumb - Compact */
    .breadcrumb {
        font-size: 12px !important;
        gap: 4px !important;
        overflow: hidden !important;
        flex-shrink: 1 !important;
        min-width: 0 !important;
    }
    
    .breadcrumb-item {
        padding: 2px 6px !important;
        font-size: 12px !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        max-width: 100px !important;
    }
    
    .breadcrumb-separator {
        font-size: 10px !important;
        margin: 0 2px !important;
    }
    
    /* Connection Status - Minimal */
    .connection-status {
        padding: 2px 6px !important;
        font-size: 9px !important;
        gap: 4px !important;
        flex-shrink: 0 !important;
    }
    
    .connection-status span {
        display: none !important; /* Hide text, show only dot */
    }
    
    .connection-dot {
        width: 6px !important;
        height: 6px !important;
    }
    
    /* Last Updated - Compact */
    .last-updated {
        font-size: 9px !important;
        padding: 2px 6px !important;
        white-space: nowrap !important;
        display: none !important; /* Hide on mobile to save space */
    }
    
    /* Auto Refresh Indicator - Smaller */
    .auto-refresh-indicator {
        width: 16px !important;
        height: 16px !important;
        margin-left: 4px !important;
    }
    
    .auto-refresh-indicator svg {
        width: 10px !important;
        height: 10px !important;
    }
    
    /* ===== Header Actions - Clean Buttons ===== */
    .header-actions {
        display: flex !important;
        gap: 4px !important;
        flex-shrink: 0 !important;
        align-items: center !important;
    }
    
    .header-actions .btn {
        padding: 6px !important;
        min-width: 32px !important;
        height: 32px !important;
        border-radius: 6px !important;
    }
    
    .header-actions .btn span {
        display: none !important; /* Hide button text */
    }
    
    .header-actions .btn svg {
        width: 16px !important;
        height: 16px !important;
    }
    
    /* Dropdown Menu - Mobile Optimized */
    .dropdown-menu {
        min-width: 160px !important;
        right: 0 !important;
        left: auto !important;
    }
    
    .dropdown-item {
        padding: 10px 12px !important;
        font-size: 13px !important;
    }
    
    /* ===== Mobile Menu Button - Premium Style ===== */
    .mobile-menu-btn {
        display: flex !important;
        position: fixed !important;
        top: 8px !important;
        left: 8px !important;
        z-index: 1001 !important;
        width: 36px !important;
        height: 36px !important;
        align-items: center !important;
        justify-content: center !important;
        background: var(--bg-elevated) !important;
        border: 1px solid var(--border) !important;
        border-radius: 8px !important;
        color: var(--text-primary) !important;
        cursor: pointer !important;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25) !important;
        transition: all 0.2s ease !important;
    }
    
    .mobile-menu-btn:active {
        transform: scale(0.92) !important;
        background: var(--bg-hover) !important;
    }
    
    .mobile-menu-btn svg {
        width: 20px !important;
        height: 20px !important;
    }
    
    /* ===== Sidebar Mobile - Full Screen ===== */
    .sidebar {
        width: 85vw !important;
        max-width: 320px !important;
        height: 100vh !important;
        height: 100dvh !important; /* Dynamic viewport height for mobile */
        position: fixed !important;
        left: 0 !important;
        top: 0 !important;
        bottom: 0 !important;
        z-index: 1002 !important;
        transform: translateX(-100%) !important;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
        overflow-y: auto !important;
        overflow-x: hidden !important;
        -webkit-overflow-scrolling: touch !important;
    }
    
    .sidebar.open {
        transform: translateX(0) !important;
    }
    
    /* Sidebar Overlay */
    .sidebar-overlay {
        display: none !important;
        position: fixed !important;
        inset: 0 !important;
        background: rgba(0, 0, 0, 0.5) !important;
        z-index: 1001 !important;
        backdrop-filter: blur(2px) !important;
        -webkit-backdrop-filter: blur(2px) !important;
    }
    
    .sidebar-overlay.active {
        display: block !important;
    }
    
    /* Panel Close Button */
    .panel-close-btn {
        display: flex !important;
        position: absolute !important;
        top: 10px !important;
        right: 10px !important;
        width: 32px !important;
        height: 32px !important;
        align-items: center !important;
        justify-content: center !important;
        background: var(--bg-tertiary) !important;
        border: 1px solid var(--border) !important;
        border-radius: 6px !important;
        color: var(--text-secondary) !important;
        cursor: pointer !important;
        z-index: 10 !important;
    }
    
    .panel-close-btn:active {
        background: var(--bg-hover) !important;
    }
    
    /* Sidebar Header */
    .sidebar-header {
        padding: 12px 14px !important;
        padding-right: 50px !important; /* Space for close button */
    }
    
    .logo-section h1 {
        font-size: 14px !important;
    }
    
    /* ===== Stats Row - 2 Column Grid ===== */
    .stats-row {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 6px !important;
        padding: 8px 10px !important;
    }
    
    .stat-box {
        padding: 10px 8px !important;
        min-width: 0 !important;
    }
    
    .stat-val {
        font-size: 18px !important;
    }
    
    .stat-lbl {
        font-size: 8px !important;
    }
    
    .stat-trend {
        font-size: 8px !important;
    }
    
    /* ===== Tabs - Scrollable ===== */
    .sidebar-tabs {
        padding: 6px 10px !important;
        gap: 4px !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
    }
    
    .sidebar-tabs::-webkit-scrollbar {
        display: none !important;
    }
    
    .tab-btn {
        padding: 8px 10px !important;
        font-size: 11px !important;
        white-space: nowrap !important;
        flex-shrink: 0 !important;
    }
    
    .tab-shortcut {
        display: none !important;
    }
    
    /* ===== Search Box - iOS Zoom Fix ===== */
    .search-box {
        margin: 6px 8px !important;
        padding: 10px 12px !important;
    }
    
    .search-box input {
        font-size: 16px !important; /* Prevents iOS zoom on focus */
    }
    
    /* ===== User Cards - Compact ===== */
    .user-list {
        padding: 0 6px 6px !important;
    }
    
    .user-card {
        padding: 10px !important;
        margin-bottom: 4px !important;
    }
    
    .user-ip {
        font-size: 12px !important;
    }
    
    .user-meta {
        flex-wrap: wrap !important;
        gap: 4px !important;
    }
    
    .user-badge {
        font-size: 9px !important;
        padding: 2px 5px !important;
    }
    
    /* ===== Chat View - Full Width ===== */
    .chat-view {
        width: 100% !important;
        height: calc(100vh - 52px) !important;
        height: calc(100dvh - 52px) !important;
    }
    
    .messages-area {
        padding: 12px !important;
    }
    
    .message {
        max-width: 95% !important;
    }
    
    .message-content {
        font-size: 14px !important;
        padding: 10px 12px !important;
        line-height: 1.5 !important;
    }
    
    /* ===== Empty State - Centered ===== */
    .empty-state {
        padding: 24px 16px !important;
    }
    
    .empty-state svg {
        width: 48px !important;
        height: 48px !important;
    }
    
    .empty-state p {
        font-size: 13px !important;
    }
    
    /* ===== Chat Actions - Touch Friendly ===== */
    .chat-actions {
        gap: 6px !important;
    }
    
    .chat-actions .btn {
        padding: 8px 12px !important;
        font-size: 12px !important;
        min-height: 36px !important;
    }
    
    /* ===== Stats Detail Grid ===== */
    .stats-detail {
        grid-template-columns: 1fr 1fr !important;
        gap: 6px !important;
        padding: 8px !important;
    }
    
    .stat-card {
        padding: 10px !important;
    }
    
    .stat-card-value {
        font-size: 16px !important;
    }
    
    .stat-card-title {
        font-size: 9px !important;
    }
    
    /* ===== Analytics - Single Column ===== */
    .analytics-grid {
        grid-template-columns: 1fr !important;
        gap: 6px !important;
    }
    
    .analytics-card {
        padding: 10px !important;
    }
    
    .analytics-value {
        font-size: 16px !important;
    }
    
    /* ===== Distribution - Compact ===== */
    .distribution-section {
        padding: 8px !important;
    }
    
    .distribution-card {
        padding: 10px !important;
    }
    
    .distribution-bar {
        width: 50px !important;
    }
    
    .distribution-name {
        font-size: 11px !important;
    }
    
    /* ===== Daily Chart - Smaller ===== */
    .daily-bars {
        height: 60px !important;
    }
    
    .daily-bar-label {
        font-size: 8px !important;
    }
    
    /* ===== Realtime Grid ===== */
    .realtime-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 6px !important;
    }
    
    .realtime-card {
        padding: 10px !important;
    }
    
    .realtime-value {
        font-size: 16px !important;
    }
    
    .realtime-label {
        font-size: 9px !important;
    }
}

/* ===== Extra Small Devices (< 400px) ===== */
@media (max-width: 400px) {
    .main-header {
        padding: 6px 8px !important;
        padding-left: 48px !important;
        min-height: 48px !important;
    }
    
    .mobile-menu-btn {
        width: 32px !important;
        height: 32px !important;
        top: 6px !important;
        left: 6px !important;
    }
    
    .mobile-menu-btn svg {
        width: 18px !important;
        height: 18px !important;
    }
    
    .header-actions .btn {
        padding: 5px !important;
        min-width: 28px !important;
        height: 28px !important;
    }
    
    .header-actions .btn svg {
        width: 14px !important;
        height: 14px !important;
    }
    
    .breadcrumb-item {
        max-width: 70px !important;
        font-size: 11px !important;
    }
    
    .sidebar {
        width: 90vw !important;
    }
    
    .stats-row {
        gap: 4px !important;
        padding: 6px 8px !important;
    }
    
    .stat-box {
        padding: 8px 6px !important;
    }
    
    .stat-val {
        font-size: 16px !important;
    }
    
    .stat-lbl {
        font-size: 7px !important;
    }
    
    .tab-btn {
        padding: 6px 8px !important;
        font-size: 10px !important;
    }
    
    .user-card {
        padding: 8px !important;
    }
    
    .user-ip {
        font-size: 11px !important;
    }
    
    .message-content {
        font-size: 13px !important;
        padding: 8px 10px !important;
    }
}

/* ===== Safe Area Insets (Notch Support) ===== */
@supports (padding: max(0px)) {
    @media (max-width: 768px) {
        .main-header {
            padding-top: max(8px, env(safe-area-inset-top)) !important;
        }
        
        .sidebar {
            padding-top: max(0px, env(safe-area-inset-top)) !important;
            padding-bottom: max(0px, env(safe-area-inset-bottom)) !important;
        }
        
        .mobile-menu-btn {
            top: max(8px, calc(env(safe-area-inset-top) + 4px)) !important;
            left: max(8px, calc(env(safe-area-inset-left) + 4px)) !important;
        }
    }
}

/* ===== Touch Optimization ===== */
@media (hover: none) and (pointer: coarse) {
    .btn, .tab-btn, .user-card, .dropdown-item {
        min-height: 44px; /* Apple's recommended touch target */
    }
    
    .user-card {
        min-height: auto;
        padding: 12px !important;
    }
    
    .dropdown-item {
        padding: 12px 14px !important;
    }
}