/* Chess Analytics Dashboard - Mobile First Design */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* Chess-Themed Color Palette */
:root {
    /* Chess Board Colors */
    --chess-black: #1a1a1a;
    --chess-dark: #2d2d2d;
    --chess-gray: #4a4a4a;
    --chess-light-gray: #6b6b6b;
    --chess-white: #ffffff;
    --chess-off-white: #f5f5f5;
    --chess-board-light: #eeeed2;
    --chess-board-dark: #769656;

    /* Game Result Colors */
    --win-green: #22c55e;
    --win-green-light: #86efac;
    --loss-red: #ef4444;
    --loss-red-light: #fca5a5;
    --draw-gray: #94a3b8;
    --draw-gray-light: #cbd5e1;

    /* Accent Colors */
    --accent-gold: #f59e0b;
    --accent-blue: #3b82f6;

    /* Semantic Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a1a;
    --text-secondary: #6b6b6b;
    --text-muted: #94a3b8;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;

    /* Shadows - Subtle and refined */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 8px 0 rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 8px 16px 0 rgba(0, 0, 0, 0.1);

    /* Spacing Scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

/* ==================== BASE STYLES ==================== */

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-secondary);
    margin: 0;
    padding: 0;
    color: var(--text-primary);
    line-height: 1.5;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container-fluid {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--space-md);
}

@media (min-width: 768px) {
    .container-fluid {
        padding: var(--space-lg);
    }
}

@media (min-width: 1024px) {
    .container-fluid {
        padding: var(--space-xl);
    }
}

/* ==================== HERO SECTION ==================== */

.dashboard-hero {
    background: linear-gradient(135deg, var(--chess-black) 0%, var(--chess-dark) 100%);
    color: var(--chess-white);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* Chess board pattern overlay */
.dashboard-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 20px,
            rgba(255, 255, 255, 0.02) 20px,
            rgba(255, 255, 255, 0.02) 40px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 20px,
            rgba(255, 255, 255, 0.02) 20px,
            rgba(255, 255, 255, 0.02) 40px
        );
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 var(--space-sm) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.hero-title .bi {
    color: var(--accent-gold);
}

.hero-subtitle {
    font-size: 0.875rem;
    opacity: 0.75;
    margin: 0 0 var(--space-md) 0;
    font-weight: 400;
    max-width: 500px;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.feature-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.feature-badge .bi {
    font-size: 0.875rem;
}

.hero-visual {
    position: relative;
    z-index: 2;
    margin-top: var(--space-lg);
}

.stats-preview {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.preview-stat {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.preview-stat .stat-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.preview-stat .stat-info {
    min-width: 0;
}

.preview-stat .stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-gold);
    line-height: 1.2;
}

.preview-stat .stat-label {
    font-size: 0.75rem;
    opacity: 0.7;
    line-height: 1.2;
}

/* Tablet and Desktop */
@media (min-width: 768px) {
    .dashboard-hero {
        padding: var(--space-xl);
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-visual {
        margin-top: 0;
    }

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

/* ==================== CONTROL PANEL ==================== */

.control-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--border-color);
}

.control-grid-simplified {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.control-step {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.step-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--chess-black);
    color: var(--chess-white);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.step-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.input-group.compact {
    display: flex;
    gap: var(--space-sm);
}

.input-group.compact input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    transition: all 0.15s ease;
    background: var(--bg-primary);
}

.input-group.compact input:focus {
    outline: none;
    border-color: var(--chess-black);
    box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.05);
}

.primary-btn {
    padding: var(--space-sm) var(--space-lg);
    background: var(--chess-black);
    color: var(--chess-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.primary-btn:hover:not(:disabled) {
    background: var(--chess-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.primary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.secondary-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.secondary-btn:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--text-secondary);
}

.secondary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

@media (min-width: 768px) {
    .control-grid-simplified {
        grid-template-columns: 1fr 2fr;
    }
}

/* ==================== FILTER SYSTEM ==================== */

.filter-system {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Filter Mode Toggle */
.filter-mode-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.filter-mode-label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.filter-mode-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 0.25rem;
    gap: 0.25rem;
}

.filter-mode-toggle input[type="radio"] {
    display: none;
}

.mode-btn {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    border: none;
    text-align: center;
}

.filter-mode-toggle input[type="radio"]:checked + .mode-btn {
    background: var(--chess-black);
    color: var(--chess-white);
    box-shadow: var(--shadow-sm);
}

/* Quick Filter Buttons */
.quick-filters-row {
    position: relative;
}

.quick-filter-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: var(--space-sm);
}

.quick-filter-btn {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
}

.quick-filter-btn:hover:not(:disabled) {
    border-color: var(--chess-black);
    color: var(--chess-black);
}

.quick-filter-btn.active {
    background: var(--chess-black);
    color: var(--chess-white);
    border-color: var(--chess-black);
}

.quick-filter-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Time Class Filter */
.additional-filters-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.time-class-filter {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.filter-label {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.time-class-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.time-class-btn {
    padding: var(--space-sm);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: center;
}

.time-class-btn:hover:not(:disabled) {
    border-color: var(--chess-black);
    color: var(--chess-black);
}

.time-class-btn.active {
    background: var(--chess-black);
    color: var(--chess-white);
    border-color: var(--chess-black);
}

.time-class-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Export Button */
.export-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--win-green);
    color: var(--chess-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.export-btn:hover:not(:disabled) {
    background: #16a34a;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.export-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Status Messages */
.status-message {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-icon {
    font-size: 1rem;
}

@media (min-width: 768px) {
    .filter-mode-row {
        flex-direction: row;
        align-items: center;
    }

    .filter-mode-toggle {
        width: auto;
    }

    .mode-btn {
        flex: initial;
        min-width: 120px;
    }

    .additional-filters-row {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .time-class-filter {
        flex-direction: row;
        align-items: center;
    }

    .quick-filter-group {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

/* ==================== SUMMARY STATS ==================== */

.summary-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    margin: var(--space-lg) 0;
}

/* Stats Section Container */
.stats-section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.stats-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-md) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--border-light);
}

.stats-section-title i {
    font-size: 1.25rem;
    color: var(--chess-black);
}

/* Stats Grid inside each section */
.stats-section-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.stats-section-grid-2 {
    grid-template-columns: 1fr;
}

/* Individual Stat Cards */
.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all 0.15s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.stat-card:active {
    transform: scale(0.98);
}

/* Stat Icon */
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    background: var(--chess-black);
    color: var(--chess-white);
}

/* Stat Content */
.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.2;
}

.stat-sublabel {
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
    font-style: italic;
}

/* Color-coded stat cards */
.stat-card-primary .stat-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.stat-card-success .stat-icon {
    background: linear-gradient(135deg, var(--win-green) 0%, #16a34a 100%);
}

.stat-card-info .stat-icon {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.stat-card-rating .stat-icon {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #ea580c 100%);
}

.stat-card-neutral .stat-icon {
    background: linear-gradient(135deg, var(--chess-gray) 0%, var(--chess-light-gray) 100%);
}

.stat-card-win .stat-icon {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.8) 0%, rgba(22, 163, 74, 0.8) 100%);
}

.stat-card-loss .stat-icon {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.8) 0%, rgba(220, 38, 38, 0.8) 100%);
}

.stat-card-highlight-win {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(34, 197, 94, 0.05) 100%);
    border-left: 4px solid var(--win-green);
}

.stat-card-highlight-win .stat-icon {
    background: var(--win-green);
}

.stat-card-highlight-loss {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);
    border-left: 4px solid var(--loss-red);
}

.stat-card-highlight-loss .stat-icon {
    background: var(--loss-red);
}

/* Comparison diff styles */
.comparison-diff {
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: var(--space-xs);
    display: inline-block;
}

.comparison-diff.positive {
    color: var(--win-green);
}

.comparison-diff.negative {
    color: var(--loss-red);
}

/* Responsive grid layouts */
@media (min-width: 640px) {
    .stats-section-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (min-width: 1024px) {
    .stats-section-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stat-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
        border-color: var(--border-color);
    }
}

/* Analytics Dashboard */
.analytics-dashboard {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.performance-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.performance-card {
    background: white;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e2e8f0;
    background: var(--light-gray);
}

.card-header h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-actions .btn {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

.card-content {
    padding: 2rem;
}

/* Rating Performance Card */
.rating-metrics {
    display: flex;
    justify-content: space-around;
    margin-bottom: 2rem;
}

.metric {
    text-align: center;
}

.metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-value.peak {
    color: var(--primary-green);
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Results Card */
.win-rate-display {
    text-align: center;
}

.win-rate {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-green);
}

.win-rate-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.results-breakdown {
    display: flex;
    justify-content: space-around;
    margin-bottom: 2rem;
}

.result-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.result-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.result-item.wins .result-dot {
    background: var(--primary-green);
}

.result-item.draws .result-dot {
    background: var(--warning-orange);
}

.result-item.losses .result-dot {
    background: var(--danger-red);
}

.result-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.result-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Time Control Analysis */
.time-control-analysis {
    width: 100%;
}

.analysis-card {
    background: white;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.time-control-tabs {
    display: flex;
    gap: 0.5rem;
}

.time-tab {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.time-tab.active {
    background: var(--primary-blue);
    color: white;
    border-color: var(--primary-blue);
}

.time-control-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.time-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: 1rem;
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 0.875rem;
}

.bullet-icon {
    background: var(--danger-red);
}

.bullet-icon::after {
    content: "⚡";
    color: white;
    font-size: 1rem;
}

.blitz-icon {
    background: var(--warning-orange);
}

.blitz-icon::after {
    content: "🔥";
    color: white;
    font-size: 1rem;
}

.rapid-icon {
    background: var(--primary-blue);
}

.rapid-icon::after {
    content: "⏱️";
    color: white;
    font-size: 1rem;
}

.daily-icon {
    background: var(--primary-green);
}

.daily-icon::after {
    content: "📅";
    color: white;
    font-size: 1rem;
}

.stat-data {
    flex: 1;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

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

/* Additional Analytics */
.additional-analytics {
    width: 100%;
}

.accuracy-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 2rem;
}

.accuracy-metric {
    text-align: center;
}

.accuracy-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-purple);
}

.accuracy-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Chart Containers */
.chart-container {
    height: 300px;
    position: relative;
}

.chart-container.large {
    height: 400px;
}

/* Status Messages */
.status-message {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    margin: 2rem 0;
    background: white;
    border-radius: 1rem;
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid #e2e8f0;
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.pagination-btn {
    background: white;
    border: 2px solid #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--light-gray);
    border-color: #cbd5e0;
    transform: translateY(-1px);
}

.pagination-btn:disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.5;
}

/* Table Styles */
#pgn-container {
    background: white;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    margin: 2rem 0;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #e2e8f0;
    background: var(--light-gray);
}

.table-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.table-meta {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.table-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    font-size: 1rem;
    color: var(--text-secondary);
    visibility: hidden;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid #e2e8f0;
    border-radius: 50%;
    border-top-color: var(--primary-blue);
    animation: spin 1s linear infinite;
    margin-right: 1rem;
}

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

th {
    background: var(--light-gray);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 1rem 0.75rem;
    text-align: left;
    border-bottom: 2px solid #e2e8f0;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 1rem 0.75rem;
    border-bottom: 1px solid #f1f5f9;
    color: var(--text-secondary);
    vertical-align: middle;
}

tr:nth-child(even) {
    background: rgba(248, 250, 252, 0.5);
}

tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

/* Result Indicators */
.result-win {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.result-loss {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.result-draw {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: rgba(245, 158, 11, 0.1);
    color: #92400e;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.result-win::before,
.result-loss::before,
.result-draw::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.result-win::before {
    background: var(--primary-green);
}

.result-loss::before {
    background: var(--danger-red);
}

.result-draw::before {
    background: var(--warning-orange);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .performance-grid {
        grid-template-columns: 1fr;
    }
    
    .time-control-stats {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
        flex-direction: column;
        text-align: center;
    }
    
    .control-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .summary-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .rating-metrics {
        flex-direction: column;
        gap: 1rem;
    }
    
    .results-breakdown {
        flex-direction: column;
        gap: 1rem;
    }
    
    .time-control-stats {
        grid-template-columns: 1fr;
    }
    
    .accuracy-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pagination-container {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .table-header {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    #pgn-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 800px;
    }
}

@media (max-width: 480px) {
    .dashboard-hero {
        padding: 2rem 1rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .control-panel {
        padding: 1rem;
    }
    
    .card-content {
        padding: 1rem;
    }
    
    .metric-value, .stat-value {
        font-size: 1.5rem;
    }
}

/* Loading states and animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.analytics-dashboard > * {
    animation: fadeInUp 0.6s ease forwards;
}

.analytics-dashboard > *:nth-child(2) {
    animation-delay: 0.1s;
}

.analytics-dashboard > *:nth-child(3) {
    animation-delay: 0.2s;
}

.analytics-dashboard > *:nth-child(4) {
    animation-delay: 0.3s;
}
/* ==================== MOBILE CARD VIEW ==================== */

/* Game Cards - Mobile First Design */
.games-card-view {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

.game-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.15s ease;
    position: relative;
}

.game-card:active {
    transform: scale(0.98);
}

.game-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
}

.game-date-time {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.game-date {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.game-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.game-card-body {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.player-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.player-info.user {
    align-items: flex-start;
}

.player-info.opponent {
    align-items: flex-end;
}

.player-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.player-name.you::after {
    content: " (You)";
    font-weight: 400;
    color: var(--text-secondary);
}

.player-rating {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.player-accuracy {
    font-size: 0.6875rem;
    color: var(--text-muted);
}

.game-vs {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-muted);
}

.game-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-sm);
}

.game-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    flex: 1;
}

.meta-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.game-action-btn {
    padding: var(--space-sm) var(--space-md);
    background: var(--chess-black);
    color: var(--chess-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

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

/* Hide table on mobile, show cards */
@media (max-width: 767px) {
    #myTable {
        display: none;
    }
    
    .games-card-view {
        display: grid;
    }
}

/* Hide cards on desktop, show table */
@media (min-width: 768px) {
    .games-card-view {
        display: none;
    }
    
    .game-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

    .game-action-btn:hover {
        background: var(--chess-dark);
        transform: translateY(-1px);
    }
}

/* ==================== SKELETON LOADERS ==================== */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-secondary) 0%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

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

.skeleton-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.skeleton-line {
    height: 16px;
    margin-bottom: var(--space-sm);
}

.skeleton-line.short {
    width: 40%;
}

.skeleton-line.medium {
    width: 60%;
}

.skeleton-line.long {
    width: 80%;
}

.skeleton-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-button {
    width: 80px;
    height: 32px;
}

/* Skeleton Grid for Cards */
.skeleton-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
}

@media (min-width: 640px) {
    .skeleton-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .skeleton-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==================== LOADING STATES ==================== */

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--chess-black);
    animation: spin 0.8s linear infinite;
    margin-right: var(--space-md);
}

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

.loading-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* ==================== PAGINATION ==================== */

.pagination-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.pagination-btn {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.15s ease;
    color: var(--text-primary);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--bg-secondary);
    border-color: var(--chess-black);
}

.pagination-btn:disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.5;
}

.pagination-pages {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

@media (min-width: 640px) {
    .pagination-container {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* ==================== TABLE CONTAINER ==================== */

#pgn-container {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin: var(--space-lg) 0;
}

.table-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.table-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.table-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

#table-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.table-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    font-size: 0.9375rem;
    color: var(--text-secondary);
    visibility: hidden;
}

/* Table - Desktop Only */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

th {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-weight: 600;
    padding: var(--space-md) var(--space-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: var(--space-md) var(--space-sm);
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    vertical-align: middle;
}

tr:hover {
    background: var(--bg-secondary);
}

td button {
    padding: var(--space-xs) var(--space-sm);
    background: var(--chess-black);
    color: var(--chess-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

td button:hover {
    background: var(--chess-dark);
}

@media (min-width: 768px) {
    .table-header {
        flex-direction: row;
        justify-content: space-between;
    }

    .table-meta {
        justify-content: flex-end;
    }
}

/* ==================== RESULT BADGES ==================== */

.result-win {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(34, 197, 94, 0.1);
    color: #166534;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.result-loss {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(239, 68, 68, 0.1);
    color: #991b1b;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.result-draw {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(148, 163, 184, 0.1);
    color: #475569;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.result-win::before,
.result-loss::before,
.result-draw::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.result-win::before {
    background: var(--win-green);
}

.result-loss::before {
    background: var(--loss-red);
}

.result-draw::before {
    background: var(--draw-gray);
}

/* ==================== COLLAPSIBLE SECTIONS ==================== */

.collapsible-section {
    margin: var(--space-lg) 0;
}

.collapsible-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.collapsible-header:active {
    transform: scale(0.99);
}

.collapsible-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.collapsible-icon {
    font-size: 1.25rem;
    color: var(--text-secondary);
    transition: transform 0.15s ease;
}

.collapsible-section.collapsed .collapsible-icon {
    transform: rotate(-90deg);
}

.collapsible-content {
    max-height: 5000px;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapsible-section.collapsed .collapsible-content {
    max-height: 0;
}

/* ==================== UTILITY CLASSES ==================== */

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

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.hidden {
    display: none !important;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}