/* ===== CSS Variables & Design System ===== */
:root {
    /* Colors - Light Minimalist */
    --primary: hsl(240, 60%, 50%);
    --primary-dark: hsl(240, 60%, 40%);
    --primary-light: hsl(240, 60%, 60%);
    --secondary: hsl(240, 20%, 45%);
    --accent: hsl(240, 50%, 55%);
    --success: hsl(140, 50%, 45%);
    --warning: hsl(40, 80%, 50%);
    --danger: hsl(0, 70%, 55%);

    /* Backgrounds - Clean Light */
    --bg-primary: hsl(0, 0%, 99%);
    --bg-secondary: hsl(0, 0%, 100%);
    --bg-tertiary: hsl(240, 10%, 97%);
    --bg-card: hsla(0, 0%, 100%, 0.9);
    --bg-glass: hsla(0, 0%, 100%, 0.7);

    /* Text - Dark on Light */
    --text-primary: hsl(240, 10%, 10%);
    --text-secondary: hsl(240, 10%, 30%);
    --text-muted: hsl(240, 10%, 45%);

    /* Borders - Subtle */
    --border-color: hsla(240, 10%, 85%, 1);
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Shadows - Soft and Minimal */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 0 1px rgba(99, 102, 241, 0.1);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", system-ui, sans-serif;
    --font-size-sm: 0.825rem;
    --font-size-base: 0.9375rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 400ms ease-in-out;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* Custom Scrollbar - Minimal */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== Container ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-bottom: 80px;
    /* Space for sticky footer */
    flex: 1;
    width: 100%;
}

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-lg);
}

.header-content>div {
    text-align: left;
}

.header-branding {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-logo-text {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    color: var(--primary);
    letter-spacing: -2px;
    margin-right: var(--spacing-xs);
}

.header-content h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.2;
}

.subtitle {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
}

/* ===== Upload Section ===== */
.upload-section {
    margin-bottom: var(--spacing-lg);
}

.upload-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.upload-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--primary);
}

.upload-icon {
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.upload-card h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.upload-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.upload-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.file-name {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
}

.upload-info {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    border-left: 3px solid var(--primary);
}

.upload-info p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===== Navigation Tabs ===== */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.tab-btn svg {
    flex-shrink: 0;
}

/* ===== Tab Content ===== */
.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Stats Grid ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.stat-icon {
    font-size: 1.75rem;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.4));
}

.stat-info h3 {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 1.0rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.stat-info h3 {
    margin-bottom: 0 !important;
}

/* ===== Charts Grid ===== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.chart-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.chart-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chart-header h3 {
    margin-bottom: 0;
}

.chart-controls {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--bg-tertiary);
    padding: 0.25rem;
    border-radius: var(--border-radius);
}

.chart-toggle-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-radius: calc(var(--border-radius) - 2px);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* Chart Action Buttons */
.chart-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.action-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.35rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    color: var(--primary);
    background: var(--bg-tertiary);
}

.action-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

.chart-toggle-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-sm);
}

/* ===== Experiment & TA Stats ===== */
.experiment-stats,
.ta-stats {
    display: grid;
    gap: var(--spacing-lg);
}

.experiment-card,
.ta-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.experiment-card h3,
.ta-card h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 600;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.stat-item {
    background: var(--bg-tertiary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.stat-item label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-item .value {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Student Filters ===== */
.student-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-group label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-group select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-group select:hover {
    border-color: var(--primary);
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* ===== Student Table ===== */
.student-table-container {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    overflow-x: auto;
    /* Enable horizontal scrolling */
    box-shadow: var(--shadow-md);
}

.student-table-container {
    width: 100%;
    overflow-x: auto;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.student-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.student-table thead {
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.student-table th {
    padding: 0.5rem var(--spacing-xs);
    /* Reduced padding */
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
    font-size: 0.9rem;
    /* Reduced font size */
}

.student-table td {
    padding: 0.5rem var(--spacing-xs);
    /* Reduced padding */
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    /* Reduced font size */
}

.student-table tbody tr {
    transition: all var(--transition-fast);
}

.student-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.student-table tbody tr:last-child td {
    border-bottom: none;
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-high {
    background: linear-gradient(135deg, var(--success), hsl(140, 70%, 45%));
    color: white;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.3);
}

.badge-poor {
    background: linear-gradient(135deg, var(--danger), hsl(0, 85%, 50%));
    color: white;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.badge-normal {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.compulsory-column {
    color: var(--danger);
    font-weight: 700;
}

/* Performer Tooltips */
.performer-tooltip {
    position: absolute;
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    padding: 0;
    color: #f1f5f9;
    z-index: 2000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    pointer-events: none;
    min-width: 220px;
    overflow: hidden;
    animation: tooltipFadeIn 0.2s ease-out;
}

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tooltip-header {
    background: rgba(99, 102, 241, 0.1);
    padding: 8px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.tooltip-title {
    display: block;
    font-weight: 700;
    font-size: 0.8rem;
    color: #fff;
    margin-bottom: 1px;
}

.tooltip-criteria {
    font-size: 0.65rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tooltip-body {
    padding: 8px 12px;
}

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

.tooltip-table th {
    text-align: left;
    font-size: 0.65rem;
    color: #64748b;
    text-transform: uppercase;
    padding-bottom: 4px;
    font-weight: 600;
}

.tooltip-table td {
    padding: 4px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    vertical-align: middle;
    font-size: 0.75rem;
    color: #e2e8f0;
}

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

.student-name {
    font-weight: 600;
    font-size: 0.75rem;
    color: #e2e8f0;
}

.student-matric {
    font-size: 0.7rem;
    color: #64748b;
}

.score-cell {
    text-align: right;
    font-weight: 700;
    font-family: var(--font-family);
    font-size: 0.75rem;
}

.text-success {
    color: #4ade80;
}

.text-danger {
    color: #f87171;
}

/* ===== Footer ===== */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    padding: 1rem 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--border-color);
    width: 100%;
    background: var(--bg-primary);
    z-index: 100;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .header-content h1 {
        font-size: var(--font-size-xl);
    }

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

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

    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
    }

    .student-table-container {
        overflow-x: auto;
    }

    .student-filters {
        flex-direction: column;
    }
}

/* ===== Loading Animation ===== */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

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

/* ===== Password Modal ===== */
.password-modal {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.password-modal-content {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.password-branding {
    margin-bottom: var(--spacing-md);
}

.password-logo-text {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -2px;
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.password-modal-content h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.password-modal-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

#passwordInput {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    text-align: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

#passwordInput:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.password-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.password-btn {
    flex: 1;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid;
}

.password-ok {
    background: var(--primary);
    border-color: transparent;
    color: white;
}

.password-ok:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.password-quit {
    background: transparent;
    border-color: var(--danger);
    color: var(--danger);
}

.password-quit:hover {
    background: var(--danger);
    color: white;
    transform: translateY(-2px);
}

.password-error {
    color: var(--danger);
    font-size: var(--font-size-sm);
    min-height: 1.2rem;
    margin: 0;
}

/* ===== Reset Button ===== */
.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.reset-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.reset-btn:hover {
    background: var(--danger);
    color: white;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1px;
}

.nav-tab {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
}

.nav-tab:hover {
    color: var(--text-primary);
}

.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Tab Content Container */
.tab-content {
    width: 100%;
}

/* Compact UI & Scrollbars */
.card.compact {
    padding: 1rem;
}

.card.compact h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.card.scrollable {
    max-height: 400px;
    overflow-y: auto;
}

/* Custom Scrollbar */
.card.scrollable::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.card.scrollable::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.card.scrollable::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.card.scrollable::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Compact Table */
.data-table.compact th,
.data-table.compact td {
    padding: 0.5rem;
    font-size: 0.875rem;
}

/* Analytics Grid - Stacked Rows */
.analytics-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 2rem;
}

.analytics-grid .chart-card {
    min-height: 450px;
}

/* Stat Box */
.stat-box {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.stat-box .label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.stat-box .value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

.stat-box.highlight {
    border-left: 3px solid var(--primary);
}

/* Significance Badges */
.badge.significant {
    background: rgba(220, 38, 38, 0.15);
    /* Darker Red */
    color: hsl(0, 80%, 40%);
    border: 1px solid rgba(220, 38, 38, 0.4);
}

.badge.not-significant {
    background: rgba(22, 163, 74, 0.15);
    /* Darker Green */
    color: hsl(140, 80%, 30%);
    border: 1px solid rgba(22, 163, 74, 0.4);
}


/* Custom JS Tooltip */
.custom-tooltip {
    position: fixed;
    padding: 0.75rem 1rem;
    background: rgba(17, 24, 39, 0.95);
    color: #f3f4f6;
    border-radius: 6px;
    font-size: 0.85rem;
    pointer-events: none;
    z-index: 10000;
    max-width: 250px;
    line-height: 1.4;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: opacity 0.2s ease-out;
}

.custom-tooltip.visible {
    opacity: 1;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--border-color);
    width: 100%;
    background: var(--bg-primary);
}