/* --- CSS Variables / Design Tokens (Corporate Blue & White) --- */
:root {
    /* Primary Colors */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-subtle: #f1f5f9;
    
    /* Borders & Accents */
    --border-light: #e2e8f0;
    --border-accent: rgba(37, 99, 235, 0.2);
    
    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* Corporate Blue Palette */
    --accent-blue-deep: #1e40af;
    --accent-blue: #2563eb;
    --accent-blue-light: #60a5fa;
    --accent-blue-subtle: #dbeafe;
    
    /* Functional Colors */
    --accent-green: #10b981;
    --accent-yellow: #f59e0b;
    --accent-red: #ef4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1e40af, #2563eb);
    --gradient-professional: linear-gradient(135deg, #2563eb, #60a5fa);
    
    /* Shadows (Clean & Soft) */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.1);
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Font */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- Background Decorations --- */
.bg-orbs {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: radial-gradient(circle at top right, var(--accent-blue-subtle), transparent 400px),
                radial-gradient(circle at bottom left, #f1f5f9, transparent 400px);
    opacity: 0.5;
}

/* --- App Container --- */
.app-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Header --- */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 32px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--accent-blue-subtle);
    border-radius: var(--radius-md);
    color: var(--accent-blue);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-blue-deep);
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
}

/* --- Upload Section --- */
.upload-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 40px;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-light);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.upload-zone:hover {
    border-color: var(--accent-blue-light);
    background: var(--accent-blue-subtle);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.upload-zone.drag-over {
    border-color: var(--accent-blue);
    background: var(--accent-blue-subtle);
    box-shadow: 0 0 20px rgba(37,99,235, 0.15);
}

.upload-icon {
    margin-bottom: 24px;
    color: var(--accent-blue);
}

.upload-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.upload-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.upload-formats {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 16px;
}

.format-badge {
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: var(--accent-blue-subtle);
    border-radius: 100px;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-fast);
}

.format-badge:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.upload-limit {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- URL Section --- */
.url-section {
    margin-top: 32px;
    width: 100%;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin-bottom: 24px;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-light);
}

.divider:not(:empty)::before {
    margin-right: 16px;
}

.divider:not(:empty)::after {
    margin-left: 16px;
}

.url-input-container {
    display: flex;
    gap: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    padding: 8px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.url-input-container:focus-within {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.url-icon-subtle {
    display: flex;
    align-items: center;
    padding-left: 12px;
    color: var(--text-muted);
}

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

.btn-url {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
}

.btn-url:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* --- Transitions & Animations --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.upload-section, .processing-section, .results-section {
    animation: fadeInUp 0.5s var(--transition-smooth);
}

.hidden {
    display: none !important;
}

/* --- Processing Section --- */
.processing-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 60px 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.processing-spinner {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}

.spinner-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 3px solid #e2e8f0;
    border-top-color: var(--accent-blue);
    animation: spin 1s linear infinite;
}

.ring-inner {
    inset: 10px;
    border-top-color: var(--accent-blue-light);
    animation-direction: reverse;
    animation-duration: 0.8s;
}

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

.processing-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.processing-subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 30px;
}

.processing-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
    max-width: 360px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.step.active {
    border-color: var(--accent-blue);
    color: var(--accent-blue-deep);
    background: var(--accent-blue-subtle);
}

.step.done {
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--accent-green);
}

.step-icon {
    font-size: 1.1rem;
}

.step-status {
    margin-left: auto;
    font-size: 0.9rem;
}

/* --- Results Section --- */
.results-section {
    animation: fadeInUp 0.5s ease;
}

/* File Info Bar */
.file-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
}

.file-info-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.file-type-icon {
    font-size: 2rem;
}

.file-name {
    font-size: 1rem;
    font-weight: 600;
}

.file-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.file-info-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.processing-time {
    font-size: 0.8rem;
    color: var(--accent-blue);
    padding: 4px 12px;
    background: var(--accent-blue-subtle);
    border-radius: 100px;
}

.btn-new, .btn-back {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-new {
    background: var(--gradient-primary);
    color: white;
}

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

.btn-new:hover, .btn-back:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-new:hover {
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

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

.btn-cancel {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-sm);
    color: var(--accent-red);
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-cancel:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
    transform: translateY(-1px);
}

/* --- Tabs --- */
.tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
    flex: 1;
    justify-content: center;
}

.tab:hover {
    color: var(--accent-blue);
    background: #fff;
}

.tab.active {
    color: var(--accent-blue);
    background: #fff;
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-sm);
}

.tab svg {
    opacity: 0.7;
    flex-shrink: 0;
}

.tab.active svg {
    opacity: 1;
}

/* --- Tab Panels --- */
.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-panel.active {
    display: block;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

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

.btn-copy, .btn-download {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-glass-strong);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-copy:hover, .btn-download:hover {
    color: var(--accent-cyan);
    border-color: rgba(6, 182, 212, 0.3);
    background: rgba(6, 182, 212, 0.05);
}

.btn-copy.copied {
    color: var(--accent-green);
    border-color: rgba(16, 185, 129, 0.3);
}

/* --- Text Content --- */
.text-content, .summary-content {
    padding: 32px;
    background: #ffffff;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    color: #334155; /* Slightly softer text color for reduced eye strain */
    box-shadow: var(--shadow-sm);
    max-height: 600px;
    overflow-y: auto;
    font-size: 1rem;
    line-height: 1.7; /* Optimal readable line height */
    word-wrap: break-word;
    text-align: left; /* Left alignment completely cures weird spacing gaps */
    letter-spacing: 0.015em;
    word-spacing: 0.05em; /* Smooth spacing between words */
}

/* Enhancing Markdown Elements */
.text-content p, .summary-content p {
    margin-bottom: 1.25em;
}

.text-content p:last-child, .summary-content p:last-child {
    margin-bottom: 0;
}

.text-content h1, .summary-content h1,
.text-content h2, .summary-content h2,
.text-content h3, .summary-content h3 {
    margin-top: 1.5em;
    margin-bottom: 0.75em;
    font-weight: 700;
    color: var(--text-primary);
}

.text-content h1, .summary-content h1 { font-size: 1.5rem; }
.text-content h2, .summary-content h2 { font-size: 1.35rem; }
.text-content h3, .summary-content h3 { font-size: 1.15rem; }

.text-content ul, .summary-content ul,
.text-content ol, .summary-content ol {
    margin-top: 0;
    margin-bottom: 1.25em;
    padding-left: 1.5em;
}

.text-content li, .summary-content li {
    margin-bottom: 0.5em;
}

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

.summary-content {
    border-left: 4px solid var(--accent-blue);
    background: #fafbff;
    font-size: 0.95rem;
}

.placeholder {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 30px 0;
}

/* --- Summary Stats --- */
.summary-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px 12px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Entities --- */
.entity-count {
    font-size: 0.85rem;
    color: var(--accent-cyan);
    padding: 4px 12px;
    background: rgba(6, 182, 212, 0.1);
    border-radius: 100px;
}

.entity-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.entity-category-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.entity-category-badge:hover {
    background: var(--bg-glass-strong);
}

.entity-category-badge .cat-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.entity-category-badge .cat-count {
    font-weight: 700;
    margin-left: 4px;
}

.entity-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 10px;
}

.entity-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.entity-item:hover {
    background: var(--bg-glass-strong);
    border-color: var(--border-accent);
}

.entity-item-left {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.entity-type-badge {
    padding: 2px 8px;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 4px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    white-space: nowrap;
    flex-shrink: 0;
}

.entity-text {
    font-size: 0.88rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.entity-item-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 2px 8px;
    background: var(--bg-glass-strong);
    border-radius: 100px;
    flex-shrink: 0;
    margin-left: 8px;
}

/* Entity color mapping */
.badge-PERSON { background: rgba(236, 72, 153, 0.15); color: var(--accent-pink); }
.badge-ORG { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.badge-GPE { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.badge-DATE { background: rgba(245, 158, 11, 0.15); color: var(--accent-yellow); }
.badge-MONEY { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.badge-EVENT { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.badge-PRODUCT { background: rgba(251, 146, 60, 0.15); color: #fb923c; }
.badge-LAW { background: rgba(168, 85, 247, 0.15); color: #a855f7; }
.badge-NORP { background: rgba(244, 114, 182, 0.15); color: #f472b6; }
.badge-EMAIL { background: rgba(6, 182, 212, 0.15); color: var(--accent-cyan); }
.badge-PHONE { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.badge-URL { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.badge-TIME { background: rgba(245, 158, 11, 0.15); color: var(--accent-yellow); }
.badge-PERCENT { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.badge-CARDINAL { background: rgba(100, 116, 139, 0.15); color: #94a3b8; }
.badge-ORDINAL { background: rgba(100, 116, 139, 0.15); color: #94a3b8; }
.badge-QUANTITY { background: rgba(251, 146, 60, 0.15); color: #fb923c; }

/* --- Sentiment --- */
.sentiment-overview {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sentiment-gauge-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 30px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
}

.sentiment-label-display {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.sentiment-score {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.sentiment-bar-container {
    width: 100%;
    max-width: 500px;
}

.sentiment-bar {
    width: 100%;
    height: 12px;
    border-radius: 6px;
    background: var(--bg-glass-strong);
    overflow: hidden;
    display: flex;
}

.sentiment-bar-positive {
    background: var(--accent-green);
    transition: width 0.8s ease;
}

.sentiment-bar-neutral {
    background: var(--text-muted);
    transition: width 0.8s ease;
}

.sentiment-bar-negative {
    background: var(--accent-red);
    transition: width 0.8s ease;
}

.sentiment-bar-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.sentiment-bar-labels span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.sentiment-bar-labels .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot-pos { background: var(--accent-green); }
.dot-neu { background: var(--text-muted); }
.dot-neg { background: var(--accent-red); }

.sentiment-sentences {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
}

.sentiment-sentences h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.sentence-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-glass);
    font-size: 0.85rem;
}

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

.sentence-sentiment-badge {
    padding: 2px 8px;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
    margin-top: 2px;
}

.sent-positive { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); }
.sent-negative { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); }
.sent-neutral { background: rgba(100, 116, 139, 0.15); color: var(--text-muted); }

.sentence-text {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* --- Metadata --- */
.metadata-content {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.metadata-table {
    width: 100%;
    border-collapse: collapse;
}

.metadata-table tr {
    border-bottom: 1px solid var(--border-glass);
}

.metadata-table tr:last-child {
    border-bottom: none;
}

.metadata-table td {
    padding: 12px 20px;
    font-size: 0.88rem;
}

.metadata-table td:first-child {
    font-weight: 600;
    color: var(--text-secondary);
    width: 200px;
    white-space: nowrap;
}

.metadata-table td:last-child {
    color: var(--text-primary);
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: 24px 0 12px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    backdrop-filter: blur(20px);
    color: var(--text-primary);
    font-size: 0.85rem;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease, fadeOut 0.5s ease 3.5s forwards;
    max-width: 380px;
}

.toast.toast-error {
    border-color: rgba(239, 68, 68, 0.3);
}

.toast.toast-success {
    border-color: rgba(16, 185, 129, 0.3);
}

.toast-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

/* --- Utility Classes --- */
.hidden {
    display: none !important;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
    .app-container {
        padding: 12px;
    }

    .header {
        flex-direction: column;
        gap: 12px;
        padding: 14px;
    }

    .upload-zone {
        padding: 40px 24px;
    }

    .upload-title {
        font-size: 1.1rem;
    }

    .tabs {
        overflow-x: auto;
    }

    .tab {
        padding: 8px 12px;
        font-size: 0.75rem;
    }

    .tab svg {
        display: none;
    }

    .summary-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .entity-list {
        grid-template-columns: 1fr;
    }

    .file-info-bar {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .file-info-right {
        width: 100%;
        justify-content: flex-end;
    }

    .metadata-table td:first-child {
        width: 140px;
    }

    .sentiment-score {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .summary-stats {
        grid-template-columns: 1fr 1fr;
    }

    .format-badge {
        font-size: 0.65rem;
        padding: 3px 8px;
    }
}

/* --- Key Highlights Styling --- */
.key-highlights {
    margin-top: 24px;
    padding-top: 20px;
}

.key-highlights h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--accent-blue-deep);
    display: flex;
    align-items: center;
    gap: 8px;
}

.key-highlights h4::before {
    content: '✨';
}

.highlights-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.highlights-list li {
    position: relative;
    padding: 12px 16px 12px 42px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition-fast);
}

.highlights-list li:hover {
    transform: translateX(4px);
    border-color: var(--accent-blue-light);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.highlights-list li::before {
    content: '→';
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-blue);
    font-weight: 800;
}