/* ═══════════════════════════════════════════════════════════════════
   MIC Translator v3.0 — Premium Dark UI
   ═══════════════════════════════════════════════════════════════════ */

/* ── Reset & Variables ────────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #16161f;
    --bg-elevated: #1c1c28;
    --bg-hover: #22222f;
    --bg-input: #1a1a26;

    --text-primary: #e8e8f0;
    --text-secondary: #9898b0;
    --text-muted: #5e5e78;
    --text-placeholder: #4a4a60;

    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --accent-gradient: linear-gradient(135deg, #6366f1, #a855f7);
    --accent-glow: rgba(99, 102, 241, 0.25);
    --accent-hover: #818cf8;

    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    --border-color: #2a2a3a;
    --border-light: #1e1e2e;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 20px var(--accent-glow);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ── Scrollbar ────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ═══════════════════ HEADER ═══════════════════════════════════════ */

#app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: 0.8rem 1.5rem;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    animation: pulse-glow 3s infinite;
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 4px rgba(99, 102, 241, 0.3)); }
    50% { filter: drop-shadow(0 0 12px rgba(99, 102, 241, 0.6)); }
}

#app-title {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.version-badge {
    font-size: 0.65rem;
    font-weight: 600;
    background: var(--accent-gradient);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
    margin-left: 0.25rem;
}

.header-stats {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.stat-pill {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.stat-pill:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
}

.stat-icon { font-size: 0.9rem; }

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
    animation: blink 1.5s infinite;
}

.status-dot.online { background: var(--success); animation: none; }
.status-dot.error { background: var(--danger); }

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ═══════════════════ MAIN LAYOUT ═════════════════════════════════ */

#main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
    min-height: calc(100vh - 60px);
}

/* ═══════════════════ TRANSLATION PANEL ═══════════════════════════ */

.translation-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ── Language Bar ─────────────────────────────────────────────────── */

.lang-bar {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.lang-selector-group {
    flex: 1;
}

.lang-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.lang-select-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
}

.lang-select-btn:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
    box-shadow: var(--shadow-glow);
}

.chevron {
    opacity: 0.5;
    transition: var(--transition-fast);
}

.lang-select-btn:hover .chevron { opacity: 1; }

.swap-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-base);
    flex-shrink: 0;
}

.swap-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: rotate(180deg);
}

/* ── Translation Grid ─────────────────────────────────────────────── */

.translation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.translation-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: var(--transition-base);
}

.translation-box:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.box-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-light);
}

.box-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.box-actions {
    display: flex;
    gap: 0.25rem;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
}

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

#input-text {
    width: 100%;
    flex: 1;
    min-height: 150px;
    padding: 1rem;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
}

#input-text::placeholder { color: var(--text-placeholder); }

.output-display {
    flex: 1;
    min-height: 150px;
    padding: 1rem;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    overflow-y: auto;
}

.placeholder-text {
    color: var(--text-placeholder);
    font-style: italic;
}

.box-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 1rem;
    border-top: 1px solid var(--border-light);
    gap: 0.5rem;
}

.char-count {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.box-footer-actions {
    display: flex;
    gap: 0.5rem;
}

/* ── Buttons ──────────────────────────────────────────────────────── */

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

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

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

.mic-btn.recording {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
    border-color: var(--danger);
    animation: recording-pulse 1.5s infinite;
}

@keyframes recording-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
}

.translate-btn {
    background: var(--accent-gradient);
    color: white;
    border: none;
    box-shadow: var(--shadow-glow);
}

.translate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 30px var(--accent-glow);
}

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

.translate-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ── Translation Meta ─────────────────────────────────────────────── */

.translation-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.meta-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.55rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.meta-tag.success { border-color: rgba(34, 197, 94, 0.3); color: var(--success); }
.meta-tag.warning { border-color: rgba(245, 158, 11, 0.3); color: var(--warning); }
.meta-tag.info { border-color: rgba(59, 130, 246, 0.3); color: var(--info); }

/* ── Pipeline Info ────────────────────────────────────────────────── */

.pipeline-info {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.pipeline-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.pipeline-toggle:hover { color: var(--text-primary); background: var(--bg-hover); }

.pipeline-details { padding: 0 1rem 1rem; }

.pipeline-step {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.pipeline-step:last-child { border-bottom: none; }
.pipeline-step strong { color: var(--text-primary); font-weight: 600; }
.pipeline-step .step-label {
    display: inline-block;
    min-width: 100px;
    color: var(--accent-primary);
    font-weight: 600;
}

/* ═══════════════════ SIDEBAR ═════════════════════════════════════ */

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.card-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.card-title svg { color: var(--accent-primary); }

/* ── Status Grid ──────────────────────────────────────────────────── */

.status-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    flex-shrink: 0;
}

.status-indicator.active { background: var(--success); }
.status-indicator.inactive { background: var(--danger); }
.status-indicator.loading { background: var(--warning); animation: blink 1s infinite; }

/* ── History ──────────────────────────────────────────────────────── */

.history-actions {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.small-btn {
    padding: 0.3rem 0.6rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.68rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

.small-btn.danger:hover {
    border-color: var(--danger);
    color: var(--danger);
}

.history-list {
    max-height: 400px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.history-item {
    padding: 0.6rem 0.75rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.history-item:hover {
    border-color: var(--accent-primary);
    background: var(--bg-hover);
}

.history-original {
    font-size: 0.78rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.2rem;
}

.history-translated {
    font-size: 0.82rem;
    color: var(--text-primary);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 0.3rem;
    font-size: 0.65rem;
    color: var(--text-muted);
}

.empty-state {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* ═══════════════════ LANGUAGE PICKER MODAL ═══════════════════════ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

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

.modal-content {
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
}

.modal-header h2 {
    font-size: 1.05rem;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover { background: var(--danger); color: white; border-color: var(--danger); }

.modal-search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-muted);
}

.modal-search input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
}

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

.lang-section {
    padding: 0.5rem 1.25rem;
    overflow-y: auto;
}

.section-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding-top: 0.5rem;
}

.lang-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.35rem;
    margin-bottom: 0.5rem;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.7rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lang-option:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.lang-option.selected {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-hover);
}

.lang-option .voice-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    flex-shrink: 0;
}

.lang-option .fav-star {
    margin-left: auto;
    font-size: 0.7rem;
    cursor: pointer;
    opacity: 0.3;
    transition: var(--transition-fast);
}

.lang-option:hover .fav-star { opacity: 0.7; }
.lang-option .fav-star.active { opacity: 1; color: #f59e0b; }

/* ═══════════════════ LOADING OVERLAY ═════════════════════════════ */

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(6px);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.loading-spinner {
    position: relative;
    width: 60px;
    height: 60px;
}

.spinner-ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-radius: 50%;
}

.spinner-ring:nth-child(1) {
    border-top-color: #6366f1;
    animation: spin 1s linear infinite;
}

.spinner-ring:nth-child(2) {
    inset: 6px;
    border-right-color: #a855f7;
    animation: spin 1.5s linear infinite reverse;
}

.spinner-ring:nth-child(3) {
    inset: 12px;
    border-bottom-color: #ec4899;
    animation: spin 2s linear infinite;
}

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

.loading-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    animation: pulse 1.5s ease infinite;
}

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

/* ═══════════════════ TOAST ═══════════════════════════════════════ */

.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.75rem 1.25rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
    max-width: 320px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--info); }

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; transform: translateX(50px); }
}

/* ═══════════════════ RESPONSIVE ══════════════════════════════════ */

@media (max-width: 1024px) {
    #main-content {
        grid-template-columns: 1fr;
    }
    .sidebar { order: -1; }
}

@media (max-width: 768px) {
    #app-header { padding: 0.6rem 1rem; }

    .header-stats { display: none; }

    #main-content { padding: 1rem; gap: 1rem; }

    .translation-grid {
        grid-template-columns: 1fr;
    }

    .lang-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .swap-btn {
        align-self: center;
        transform: rotate(90deg);
    }

    .swap-btn:hover { transform: rotate(270deg); }

    .lang-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}