/* =====================================================
   CHESS CLUB MANAGEMENT SYSTEM - PROFESSIONAL CSS
   Chess-Themed Design with Professional Styling
   ===================================================== */

:root {
    /* Chess Color Palette */
    --chess-dark: #1a1a1a;
    --chess-light: #f5f5f5;
    --chess-brown: #8b6914;
    --chess-gold: #d4af37;
    --chess-silver: #c0c0c0;
    --chess-white: #ffffff;
    --chess-black: #2c2c2c;
    
    /* Accent Colors */
    --primary: #8b6914;
    --secondary: #d4af37;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;
    
    /* Typography */
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Georgia', 'Times New Roman', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-gold: 0 4px 12px rgba(212, 175, 55, 0.3);
}

/* =====================================================
   GLOBAL STYLES
   ===================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--chess-dark) 0%, var(--chess-black) 100%);
    color: #e0e0e0;
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ffd700;
    text-decoration: underline;
}

/* =====================================================
   NAVBAR / HEADER
   ===================================================== */

.navbar {
    background: linear-gradient(180deg, var(--chess-dark) 0%, #111111 100%) !important;
    border-bottom: 3px solid var(--secondary) !important;
    box-shadow: var(--shadow-lg);
    padding: 1rem 0 !important;
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--secondary) !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    color: #ffd700 !important;
    text-shadow: 2px 2px 8px rgba(212, 175, 55, 0.5);
}

.nav-link {
    color: #e0e0e0 !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--secondary) !important;
    background-color: rgba(212, 175, 55, 0.1);
    transform: translateY(-2px);
}

.nav-link.active {
    color: var(--secondary) !important;
    border-bottom: 2px solid var(--secondary);
}

.dropdown-menu {
    background: var(--chess-dark) !important;
    border: 1px solid var(--secondary) !important;
    box-shadow: var(--shadow-lg);
}

.dropdown-item {
    color: #e0e0e0 !important;
    transition: all 0.3s ease;
}

.dropdown-item:hover {
    background-color: rgba(212, 175, 55, 0.15) !important;
    color: var(--secondary) !important;
    padding-left: 1.5rem;
}

/* =====================================================
   MAIN CONTENT
   ===================================================== */

main {
    padding: var(--spacing-lg) 0;
    min-height: calc(100vh - 200px);
}

.container-fluid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* =====================================================
   HEADINGS
   ===================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    letter-spacing: 0.5px;
}

h1 {
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

h2 {
    font-size: 2rem;
    border-bottom: 2px solid var(--chess-brown);
    padding-bottom: 0.5rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.1rem;
}

/* =====================================================
   CARDS
   ===================================================== */

.card {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%) !important;
    border: 1px solid rgba(212, 175, 55, 0.3) !important;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
    border-color: var(--secondary) !important;
}

.card-header {
    background: linear-gradient(90deg, var(--chess-brown) 0%, #6b5010 100%) !important;
    border-bottom: 2px solid var(--secondary) !important;
    color: var(--secondary) !important;
    font-weight: 600;
    padding: 1rem var(--spacing-md) !important;
}

.card-body {
    color: #e0e0e0;
    padding: var(--spacing-lg) !important;
}

.card-title {
    color: var(--secondary);
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.card-text {
    color: #c0c0c0;
}

/* =====================================================
   BUTTONS
   ===================================================== */

.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--chess-brown) 0%, #6b5010 100%);
    color: var(--secondary) !important;
    border: 2px solid var(--secondary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #6b5010 0%, var(--chess-brown) 100%);
    color: #ffd700 !important;
    border-color: #ffd700;
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #229954 100%);
    color: white !important;
}

.btn-success:hover {
    background: linear-gradient(135deg, #229954 0%, var(--success) 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #c0392b 100%);
    color: white !important;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c0392b 0%, var(--danger) 100%);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d68910 100%);
    color: white !important;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #d68910 0%, var(--warning) 100%);
}

.btn-info {
    background: linear-gradient(135deg, var(--info) 0%, #2980b9 100%);
    color: white !important;
}

.btn-info:hover {
    background: linear-gradient(135deg, #2980b9 0%, var(--info) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, #555555 0%, #333333 100%);
    color: var(--secondary) !important;
    border: 1px solid var(--secondary);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #333333 0%, #555555 100%);
    color: #ffd700 !important;
}

.btn-outline-primary {
    border: 2px solid var(--secondary);
    color: var(--secondary) !important;
    background: transparent;
}

.btn-outline-primary:hover {
    background: rgba(212, 175, 55, 0.1);
    color: #ffd700 !important;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* =====================================================
   FORMS
   ===================================================== */

.form-control {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(212, 175, 55, 0.3) !important;
    color: #e0e0e0 !important;
    border-radius: 6px;
    padding: 0.75rem;
    transition: all 0.3s ease;
    font-family: var(--font-main);
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: var(--secondary) !important;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
    color: #e0e0e0 !important;
}

.form-control::placeholder {
    color: #888 !important;
}

.form-label {
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.form-check-input {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(212, 175, 55, 0.3) !important;
    border-radius: 4px;
}

.form-check-input:checked {
    background: var(--secondary) !important;
    border-color: var(--secondary) !important;
}

/* =====================================================
   TABLES
   ===================================================== */

.table {
    color: #e0e0e0;
    border-color: rgba(212, 175, 55, 0.2);
    background: rgba(0, 0, 0, 0.3) !important;
}

.table thead {
    background: linear-gradient(90deg, var(--chess-brown) 0%, #6b5010 100%);
    color: var(--secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.table thead th {
    border-color: var(--secondary);
    border-bottom: 2px solid var(--secondary);
    padding: 1rem;
    background: inherit;
}

/* =====================================================
   TABLES
   ===================================================== */

.table {
    color: #e0e0e0;
    border-color: rgba(212, 175, 55, 0.3);
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%) !important;
}

.table thead {
    background: linear-gradient(90deg, var(--chess-brown) 0%, #6b5010 100%);
    color: var(--secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.table thead th {
    border-color: var(--secondary);
    border-bottom: 2px solid var(--secondary);
    padding: 1rem;
    background: inherit;
    color: var(--secondary);
}

.table tbody {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%) !important;
}

.table tbody tr {
    transition: all 0.3s ease;
    border-color: rgba(212, 175, 55, 0.2);
    background: linear-gradient(90deg, rgba(26, 26, 26, 0.6) 0%, rgba(31, 31, 31, 0.6) 100%) !important;
}

.table tbody tr:hover {
    background: linear-gradient(90deg, rgba(139, 105, 20, 0.4) 0%, rgba(107, 80, 16, 0.4) 100%) !important;
    border-left: 3px solid var(--secondary);
    color: #d4af37;
}

.table tbody td {
    padding: 1rem;
    border-color: rgba(212, 175, 55, 0.2);
    vertical-align: middle;
    background: transparent;
    color: #e0e0e0;
}

.table-striped tbody tr:nth-of-type(odd) {
    background: linear-gradient(90deg, rgba(26, 26, 26, 0.4) 0%, rgba(31, 31, 31, 0.4) 100%) !important;
}

.table-striped tbody tr:nth-of-type(even) {
    background: linear-gradient(90deg, rgba(26, 26, 26, 0.6) 0%, rgba(31, 31, 31, 0.6) 100%) !important;
}

.table-striped tbody tr:nth-of-type(odd) td,
.table-striped tbody tr:nth-of-type(even) td {
    background: transparent;
}

.table-hover tbody tr:hover {
    background: linear-gradient(90deg, rgba(139, 105, 20, 0.4) 0%, rgba(107, 80, 16, 0.4) 100%) !important;
    border-left: 3px solid var(--secondary);
}

.table-hover tbody tr:hover td {
    background: transparent;
    color: #d4af37;
}

/* =====================================================
   BADGES & LABELS
   ===================================================== */

.badge {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.badge-success {
    background: linear-gradient(135deg, var(--success) 0%, #229954 100%);
    color: white;
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #c0392b 100%);
    color: white;
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d68910 100%);
    color: white;
}

.badge-info {
    background: linear-gradient(135deg, var(--info) 0%, #2980b9 100%);
    color: white;
}

.badge-primary {
    background: linear-gradient(135deg, var(--chess-brown) 0%, #6b5010 100%);
    color: var(--secondary);
}

/* =====================================================
   ALERTS
   ===================================================== */

.alert {
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 6px;
    padding: 1rem;
}

.alert-success {
    background: rgba(39, 174, 96, 0.1);
    color: #27ae60;
    border-color: var(--success);
}

.alert-danger {
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    border-color: var(--danger);
}

.alert-warning {
    background: rgba(243, 156, 18, 0.1);
    color: #f39c12;
    border-color: var(--warning);
}

.alert-info {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
    border-color: var(--info);
}

/* =====================================================
   PROGRESS BARS
   ===================================================== */

.progress {
    background: rgba(0, 0, 0, 0.3) !important;
    border-radius: 10px;
    overflow: hidden;
    height: 25px;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.progress-bar {
    background: linear-gradient(90deg, var(--chess-brown) 0%, var(--secondary) 100%) !important;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--chess-dark);
    transition: width 0.6s ease;
}

/* =====================================================
   NAVIGATION TABS
   ===================================================== */

.nav-tabs {
    border-bottom: 2px solid rgba(212, 175, 55, 0.3) !important;
}

.nav-tabs .nav-link {
    color: #c0c0c0 !important;
    border: none !important;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    margin-bottom: -2px;
}

.nav-tabs .nav-link:hover {
    color: var(--secondary) !important;
    border-bottom-color: var(--secondary) !important;
}

.nav-tabs .nav-link.active {
    background: transparent !important;
    color: var(--secondary) !important;
    border-bottom-color: var(--secondary) !important;
}

/* =====================================================
   DASHBOARD STATS
   ===================================================== */

.stat-card {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
    border: 2px solid rgba(212, 175, 55, 0.3);
    border-radius: 10px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.stat-card:hover {
    border-color: var(--secondary);
    box-shadow: var(--shadow-gold);
    transform: translateY(-6px);
}

.stat-card h6 {
    color: #c0c0c0;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2.5rem;
    color: var(--secondary);
    font-weight: bold;
    font-family: var(--font-heading);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
    color: #888;
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* =====================================================
   LEADERBOARD
   ===================================================== */

.leaderboard-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    transition: all 0.3s ease;
}

.leaderboard-item:hover {
    background: rgba(212, 175, 55, 0.08);
    padding-left: 1.5rem;
}

.leaderboard-rank {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary);
    margin-right: 1.5rem;
    min-width: 40px;
}

.leaderboard-rank.rank-1 {
    color: #ffd700;
    font-size: 2rem;
}

.leaderboard-rank.rank-2 {
    color: #c0c0c0;
    font-size: 1.8rem;
}

.leaderboard-rank.rank-3 {
    color: #cd7f32;
    font-size: 1.6rem;
}

.leaderboard-info {
    flex: 1;
}

.leaderboard-name {
    color: var(--secondary);
    font-weight: 600;
    font-size: 1.1rem;
}

.leaderboard-email {
    color: #888;
    font-size: 0.85rem;
}

.leaderboard-score {
    text-align: right;
    min-width: 100px;
}

.leaderboard-score-value {
    color: var(--secondary);
    font-size: 1.3rem;
    font-weight: bold;
}

.leaderboard-score-label {
    color: #888;
    font-size: 0.75rem;
    text-transform: uppercase;
}

/* =====================================================
   LIST GROUPS
   ===================================================== */

.list-group-item {
    background: rgba(255, 255, 255, 0.02) !important;
    border: 1px solid rgba(212, 175, 55, 0.2) !important;
    color: #e0e0e0 !important;
    transition: all 0.3s ease;
}

.list-group-item:hover {
    background: rgba(212, 175, 55, 0.08) !important;
    border-color: var(--secondary) !important;
    transform: translateX(4px);
}

.list-group-item strong {
    color: var(--secondary);
}

/* =====================================================
   FOOTER
   ===================================================== */

footer {
    background: linear-gradient(180deg, #0a0a0a 0%, var(--chess-dark) 100%) !important;
    border-top: 3px solid var(--secondary) !important;
    color: #888 !important;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0 !important;
}

footer p {
    margin-bottom: 0;
}

footer a {
    color: var(--secondary);
    transition: color 0.3s ease;
}

footer a:hover {
    color: #ffd700;
}

/* =====================================================
   MODALS
   ===================================================== */

.modal-content {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%) !important;
    border: 1px solid rgba(212, 175, 55, 0.3) !important;
    color: #e0e0e0;
}

.modal-header {
    background: linear-gradient(90deg, var(--chess-brown) 0%, #6b5010 100%) !important;
    border-bottom: 2px solid var(--secondary) !important;
    color: var(--secondary) !important;
}

.modal-title {
    font-family: var(--font-heading);
    color: var(--secondary);
    font-weight: 600;
}

.btn-close {
    filter: brightness(0.7) !important;
}

/* =====================================================
   RESPONSIVE DESIGN
   ===================================================== */

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .navbar-brand {
        font-size: 1.3rem;
    }

    .stat-value {
        font-size: 1.8rem;
    }

    .leaderboard-rank {
        font-size: 1rem;
        margin-right: 1rem;
    }

    .leaderboard-name {
        font-size: 0.95rem;
    }

    .card {
        margin-bottom: 1rem;
    }

    main {
        padding: 1rem 0;
    }

    .nav-tabs {
        flex-wrap: wrap;
        gap: 0.25rem;
    }

    .nav-tabs .nav-link {
        font-size: 0.82rem !important;
        padding: 0.4rem 0.65rem !important;
    }

    .leaderboard-tabs .nav-item:first-child {
        width: 100%;
    }

    .leaderboard-tabs .nav-item:first-child .nav-link {
        text-align: center;
    }

    .leaderboard-tabs .nav-item:not(:first-child) {
        flex: 1;
    }

    .leaderboard-tabs .nav-item:not(:first-child) .nav-link {
        text-align: center;
    }
}

/* =====================================================
   ANIMATIONS
   ===================================================== */

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.card {
    animation: fadeIn 0.5s ease;
}

.alert {
    animation: slideInLeft 0.4s ease;
}

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

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

.text-muted {
    color: #888 !important;
}

.text-success {
    color: var(--success) !important;
}

.text-danger {
    color: var(--danger) !important;
}

.text-warning {
    color: var(--warning) !important;
}

.text-info {
    color: var(--info) !important;
}

.text-primary {
    color: var(--secondary) !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

.mt-4 {
    margin-top: 1.5rem !important;
}

.mb-4 {
    margin-bottom: 1.5rem !important;
}

.p-4 {
    padding: 1.5rem !important;
}

.shadow {
    box-shadow: var(--shadow-lg) !important;
}

.rounded {
    border-radius: 6px !important;
}

/* =====================================================
   CHESS BOARD PATTERN (Decorative)
   ===================================================== */

.chess-pattern {
    position: relative;
    overflow: hidden;
}

.chess-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg,
            transparent,
            transparent 10px,
            rgba(212, 175, 55, 0.03) 10px,
            rgba(212, 175, 55, 0.03) 20px),
        repeating-linear-gradient(-45deg,
            transparent,
            transparent 10px,
            rgba(212, 175, 55, 0.03) 10px,
            rgba(212, 175, 55, 0.03) 20px);
    pointer-events: none;
}

/* =====================================================
   SCROLLBAR STYLING
   ===================================================== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb {
    background: var(--chess-brown);
    border-radius: 5px;
}

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

/* =====================================================
   CHESS-SPECIFIC ELEMENTS
   ===================================================== */

.level-pawn {
    border-left: 4px solid #a0a0a0;
}

.level-knight {
    border-left: 4px solid #c0c0c0;
}

.level-bishop {
    border-left: 4px solid var(--secondary);
}

.level-rook {
    border-left: 4px solid #ffd700;
}

.level-queen {
    border-left: 4px solid #ff1493;
}

.level-king {
    border-left: 4px solid #ff6347;
}

.medal-gold {
    color: #ffd700;
    font-weight: bold;
}

.medal-silver {
    color: #c0c0c0;
    font-weight: bold;
}

.medal-bronze {
    color: #cd7f32;
    font-weight: bold;
}

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

.hero {
    background: linear-gradient(135deg, var(--chess-dark) 0%, #1a1a1a 100%);
    padding: 3rem 0;
    text-align: center;
    border-bottom: 3px solid var(--secondary);
    margin-bottom: var(--spacing-xl);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: #c0c0c0;
}

/* =====================================================
   EMPTY STATE
   ===================================================== */

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #888;
}

.empty-state h5 {
    color: var(--secondary);
    margin-bottom: 1rem;
}

.empty-state p {
    margin-bottom: 1.5rem;
}

/* =====================================================
   MANAGEMENT TABLES - ADMIN PAGES
   ===================================================== */

/* Management Table Container */
.management-table-container {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-lg);
}

/* Management Table Header with Add Button */
.management-header {
    background: linear-gradient(90deg, var(--chess-brown) 0%, #6b5010 100%);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--secondary);
}

.management-header h5 {
    color: var(--secondary);
    margin: 0;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.management-header .btn-add {
    background: linear-gradient(135deg, var(--success) 0%, #229954 100%);
    color: white !important;
    border: none;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.management-header .btn-add:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #229954 0%, var(--success) 100%);
}

/* Responsive Management Header */
@media (max-width: 768px) {
    .management-header {
        flex-direction: column;
        gap: 1rem;
    }

    .management-header h5 {
        width: 100%;
        text-align: left;
    }

    .management-header .btn-add {
        width: 100%;
        text-align: center;
    }
}

/* Management Table Styles */
.management-table {
    color: #e0e0e0;
    margin-bottom: 0;
    width: 100%;
}

.management-table thead {
    background: linear-gradient(90deg, #6b5010 0%, #5a4208 100%);
    color: var(--secondary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.management-table thead th {
    border-color: var(--secondary);
    border-bottom: 2px solid var(--secondary);
    padding: 1.25rem !important;
    background: linear-gradient(90deg, #6b5010 0%, #5a4208 100%);
    vertical-align: middle;
}

.management-table tbody tr {
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.management-table tbody tr:hover {
    background: rgba(212, 175, 55, 0.12) !important;
    transform: translateX(4px);
    box-shadow: inset 4px 0 0 var(--secondary);
}

.management-table tbody tr:last-child {
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.management-table tbody td {
    padding: 1.25rem !important;
    vertical-align: middle;
    color: #c0c0c0;
    border-color: rgba(212, 175, 55, 0.2);
}

.management-table tbody td strong {
    color: var(--secondary);
    font-weight: 700;
}

.management-table-striped tbody tr:nth-of-type(odd) {
    background: rgba(0, 0, 0, 0.3) !important;
}

.management-table-striped tbody tr:nth-of-type(even) {
    background: rgba(0, 0, 0, 0.15) !important;
}

/* Action Buttons in Table */
.action-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-table-action {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

/* Edit Button */
.btn-table-edit {
    background: linear-gradient(135deg, var(--info) 0%, #2980b9 100%);
    color: white !important;
}

.btn-table-edit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #2980b9 0%, var(--info) 100%);
}

/* Delete Button */
.btn-table-delete {
    background: linear-gradient(135deg, var(--danger) 0%, #c0392b 100%);
    color: white !important;
}

.btn-table-delete:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #c0392b 0%, var(--danger) 100%);
}

/* View/Detail Button */
.btn-table-view {
    background: linear-gradient(135deg, var(--secondary) 0%, #c9a227 100%);
    color: var(--chess-dark) !important;
    font-weight: 700;
}

.btn-table-view:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
    background: linear-gradient(135deg, #c9a227 0%, var(--secondary) 100%);
}

/* Complete Button (for Topics) */
.btn-table-complete {
    background: linear-gradient(135deg, var(--success) 0%, #229954 100%);
    color: white !important;
}

.btn-table-complete:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #229954 0%, var(--success) 100%);
}

/* Disable Button */
.btn-table-disable {
    background: linear-gradient(135deg, #555555 0%, #333333 100%);
    color: #c0c0c0 !important;
}

.btn-table-disable:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #333333 0%, #555555 100%);
}

/* Responsive Table Actions */
@media (max-width: 768px) {
    .action-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }

    .btn-table-action {
        width: 100%;
        padding: 0.6rem 0.8rem;
        font-size: 0.75rem;
    }
}

/* Table Empty State */
.table-empty {
    text-align: center;
    padding: 3rem 1rem;
    color: #888;
}

.table-empty h6 {
    color: var(--secondary);
    margin-bottom: 1rem;
    font-family: var(--font-heading);
}

/* Management Form Modal / Section */
.management-form-section {
    background: linear-gradient(135deg, #2a2a2a 0%, #1f1f1f 100%);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-lg);
}

.management-form-section h5 {
    color: var(--secondary);
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(212, 175, 55, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    display: block;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(212, 175, 55, 0.3) !important;
    color: #e0e0e0 !important;
    padding: 0.75rem !important;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-family: var(--font-main);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--secondary) !important;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.3) !important;
    background: rgba(255, 255, 255, 0.08) !important;
    outline: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit-group {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.form-submit-group .btn {
    flex: 0 1 auto;
}

@media (max-width: 768px) {
    .form-submit-group {
        flex-direction: column;
    }

    .form-submit-group .btn {
        width: 100%;
    }
}

/* Status Badges in Tables */
.status-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-active {
    background: rgba(39, 174, 96, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

.status-inactive {
    background: rgba(231, 76, 60, 0.2);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.status-pending {
    background: rgba(243, 156, 18, 0.2);
    color: var(--warning);
    border: 1px solid var(--warning);
}

.status-completed {
    background: rgba(39, 174, 96, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

/* Data Table Pagination */
.pagination {
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-link {
    background: rgba(0, 0, 0, 0.2) !important;
    border: 1px solid rgba(212, 175, 55, 0.3) !important;
    color: var(--secondary) !important;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.page-link:hover {
    background: rgba(212, 175, 55, 0.15) !important;
    border-color: var(--secondary) !important;
    color: #ffd700 !important;
    transform: translateY(-2px);
}

.page-link.active {
    background: linear-gradient(135deg, var(--chess-brown) 0%, #6b5010 100%) !important;
    border-color: var(--secondary) !important;
    color: var(--secondary) !important;
}

/* Table Column Sizing */
.col-id {
    width: 5%;
    text-align: center;
}

.col-name {
    width: 25%;
}

.col-email {
    width: 25%;
}

.col-level {
    width: 12%;
    text-align: center;
}

.col-xp {
    width: 12%;
    text-align: center;
}

.col-rating {
    width: 12%;
    text-align: center;
}

.col-status {
    width: 12%;
    text-align: center;
}

.col-actions {
    width: 15%;
    text-align: center;
}

@media (max-width: 768px) {
    .col-id,
    .col-name,
    .col-email,
    .col-level,
    .col-xp,
    .col-rating,
    .col-status,
    .col-actions {
        width: auto;
    }
}

/* =====================================================
   STUDENT PROGRESS — TOPIC CARDS
   ===================================================== */

.level-section-header {
    font-family: var(--font-heading);
    color: var(--chess-gold, #d4af37);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding-bottom: 0.5rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.category-section-header {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted, #888);
    margin-top: 0.75rem;
    margin-bottom: 0.5rem;
    padding-left: 0.25rem;
    border-left: 3px solid rgba(212, 175, 55, 0.4);
    padding-left: 0.5rem;
}

.section-header {
    font-family: var(--font-heading);
    color: var(--chess-gold, #d4af37);
    font-size: 1rem;
    font-weight: 700;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid rgba(212, 175, 55, 0.25);
}

.topic-cards-list {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    width: 100%;
}

.topic-card {
    background: #1a1a1a;
    border: 1px solid rgba(212, 175, 55, 0.18);
    border-radius: 8px;
    padding: 0.85rem 1.1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.topic-card:hover {
    border-color: rgba(212, 175, 55, 0.45);
    background: #212121;
}

.topic-card.is-completed {
    border-left: 3px solid #27ae60;
}

.topic-card-left {
    flex: 1;
    min-width: 0;
}

.topic-card-name {
    font-weight: 700;
    color: #ffffff;
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}

.topic-card-category {
    display: inline-block;
    background: rgba(212, 175, 55, 0.12);
    color: #d4af37;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.18rem 0.55rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.topic-card-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.35rem;
    flex-shrink: 0;
}

.topic-card-xp {
    background: rgba(52, 152, 219, 0.15);
    color: #3498db;
    border: 1px solid rgba(52, 152, 219, 0.35);
    border-radius: 20px;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 700;
}

.topic-card-status-completed {
    background: rgba(39, 174, 96, 0.15);
    color: #27ae60;
    border: 1px solid rgba(39, 174, 96, 0.35);
    border-radius: 20px;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 700;
}

.topic-card-status-pending {
    background: rgba(120, 120, 120, 0.12);
    color: #888;
    border: 1px solid rgba(120, 120, 120, 0.25);
    border-radius: 20px;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.topic-card-date {
    font-size: 0.68rem;
    color: #666;
    text-align: right;
}

/* =====================================================
   STUDENT LEADERBOARD — RANK CARDS
   ===================================================== */

.rank-card-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
}

.rank-card {
    background: #1a1a1a;
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: 8px;
    padding: 0.8rem 1.1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
    transition: all 0.2s ease;
}

.rank-card:hover {
    border-color: rgba(212, 175, 55, 0.4);
    background: #212121;
}

.rank-card.rank-1 {
    border-left: 3px solid #ffd700;
    background: linear-gradient(90deg, rgba(255, 215, 0, 0.07) 0%, #1a1a1a 60%);
}

.rank-card.rank-2 {
    border-left: 3px solid #c0c0c0;
    background: linear-gradient(90deg, rgba(192, 192, 192, 0.06) 0%, #1a1a1a 60%);
}

.rank-card.rank-3 {
    border-left: 3px solid #cd7f32;
    background: linear-gradient(90deg, rgba(205, 127, 50, 0.07) 0%, #1a1a1a 60%);
}

.rank-medal {
    font-size: 1.6rem;
    min-width: 42px;
    text-align: center;
    flex-shrink: 0;
    line-height: 1;
}

.rank-number {
    font-size: 1rem;
    font-weight: 700;
    color: #666;
    min-width: 42px;
    text-align: center;
    flex-shrink: 0;
}

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

.rank-name {
    font-weight: 700;
    color: #e0e0e0;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rank-level-pill {
    display: inline-block;
    background: rgba(39, 174, 96, 0.12);
    color: #27ae60;
    border: 1px solid rgba(39, 174, 96, 0.28);
    border-radius: 10px;
    padding: 0.1rem 0.5rem;
    font-size: 0.68rem;
    font-weight: 600;
    margin-top: 0.18rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.rank-score {
    text-align: right;
    flex-shrink: 0;
    min-width: 70px;
}

.rank-score-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--chess-gold, #d4af37);
    line-height: 1.2;
}

.rank-score-label {
    display: block;
    font-size: 0.64rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rank-score-sub {
    display: block;
    font-size: 0.7rem;
    color: #666;
    margin-top: 0.15rem;
}