/* ============================================================
   DC Academic Fair - Design System v3
   มหกรรมวิชาการ — Playful Pastel Educational Theme
   Inspired by: Choice Board / 3D Educational Style
   Font: TH Sarabun New (Sarabun from Google Fonts)
   ============================================================ */

/* CSS Variables - Design Tokens */
:root {
    /* Primary palette — Purple/Indigo */
    --primary: #6C5CE7;
    --primary-light: #A29BFE;
    --primary-dark: #4834D4;
    --primary-50: rgba(108, 92, 231, 0.08);
    --primary-100: rgba(108, 92, 231, 0.15);

    /* Accent — Pink */
    --accent: #FD79A8;
    --accent-light: #FFEEF5;
    --accent-dark: #E84393;

    /* Semantic colors */
    --success: #00B894;
    --success-dark: #00A381;
    --success-light: #E6FBF5;

    --warning: #FDCB6E;
    --warning-dark: #E17055;
    --warning-light: #FFF8E7;

    --danger: #FF7675;
    --danger-dark: #D63031;
    --danger-light: #FFEEEE;

    --info: #74B9FF;
    --info-dark: #0984E3;
    --info-light: #EBF5FF;

    /* Pastel rainbow for cards/accents */
    --pastel-pink: #F2C4CE;
    --pastel-purple: #C9B8E8;
    --pastel-blue: #B8D4E3;
    --pastel-green: #A8D5BA;
    --pastel-orange: #F5D6A8;
    --pastel-mint: #B5EAD7;

    /* Layout colors */
    --bg-gradient: linear-gradient(135deg, #F2C4CE 0%, #F8F9FC 30%, #E8E4F0 50%, #B8D4E3 80%, #B5EAD7 100%);
    --bg: #F8F4FF;
    --bg-alt: #F0EBFA;
    --card: rgba(255, 255, 255, 0.82);
    --card-solid: #FFFFFF;
    --glass: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.45);

    /* Text */
    --text: #2D3748;
    --text-heading: #2D1B69;
    --text-light: #6B7280;
    --text-muted: #A0AEC0;

    /* Borders */
    --border: rgba(108, 92, 231, 0.12);
    --border-light: rgba(108, 92, 231, 0.06);

    /* Layout sizing */
    --sidebar-width: 260px;
    --sidebar-collapsed: 64px;
    --header-height: 64px;

    /* Radii — pill-inspired */
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-pill: 50px;

    /* Shadows — soft & colorful */
    --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.06);
    --shadow-md: 0 6px 20px rgba(108, 92, 231, 0.08);
    --shadow-lg: 0 12px 40px rgba(108, 92, 231, 0.10);
    --shadow-xl: 0 20px 60px rgba(108, 92, 231, 0.14);
    --shadow-glow: 0 4px 24px rgba(108, 92, 231, 0.20);

    /* Transitions */
    --transition: 0.3s ease;
    --transition-fast: 0.15s ease;
    --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Sarabun', 'TH Sarabun New', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-gradient);
    background-size: 400% 400%;
    background-attachment: fixed;
    animation: gradientShift 20s ease infinite;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

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

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    25% {
        background-position: 50% 0%;
    }

    50% {
        background-position: 100% 50%;
    }

    75% {
        background-position: 50% 100%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

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

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.95);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

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

    100% {
        background-position: 200% 0;
    }
}

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

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

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

@keyframes float {

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

    50% {
        transform: translateY(-6px);
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 10px rgba(108, 92, 231, 0.15);
    }

    50% {
        box-shadow: 0 0 25px rgba(108, 92, 231, 0.30);
    }
}

.animate-fadeIn {
    animation: fadeIn var(--transition) both;
}

.animate-fadeInUp {
    animation: fadeInUp 0.5s ease both;
}

.animate-slideUp {
    animation: slideUp 0.5s ease both;
}

.animate-slideRight {
    animation: slideRight 0.4s ease both;
}

.animate-scaleIn {
    animation: scaleIn 0.4s ease both;
}

.animate-bounceIn {
    animation: bounceIn 0.6s ease both;
}

/* Stagger animation delays */
.stagger-1 {
    animation-delay: 0.05s;
}

.stagger-2 {
    animation-delay: 0.1s;
}

.stagger-3 {
    animation-delay: 0.15s;
}

.stagger-4 {
    animation-delay: 0.2s;
}

.stagger-5 {
    animation-delay: 0.25s;
}

.stagger-6 {
    animation-delay: 0.3s;
}

/* ============================================================
   LAYOUT - Main Application
   ============================================================ */

.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Top Navbar — Glassmorphism */
.top-navbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: var(--header-height);
    box-shadow: 0 4px 30px rgba(108, 92, 231, 0.06);
}

.top-navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 250px;
    /* Fixed width to balance layout */
}

.top-navbar-logo {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    object-fit: contain;
    box-shadow: var(--shadow-sm);
}

.top-navbar-logo-placeholder {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
    flex-shrink: 0;
    box-shadow: var(--shadow-glow);
}

.top-navbar-title h2 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-heading);
    white-space: nowrap;
}

.sub-navbar-nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    justify-content: center;
    padding: 12px 24px;
    background: #ffffff;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: var(--header-height);
    z-index: 190;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}



.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--bg-light);
    border: 1px solid var(--border);
}

.nav-item:hover {
    background: rgba(108, 92, 231, 0.08);
    color: var(--primary);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.25);
}

.nav-item .nav-emoji {
    font-size: 1.15rem;
    line-height: 1;
}

/* Dropdown */
.nav-item-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: 8px;
    min-width: 180px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--glass-border);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 210;
}

/* Invisible bridge to fix hover gap */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 0;
    right: 0;
    height: 10px;
}

.nav-item-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(5px);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.88rem;
    font-weight: 500;
    width: 100%;
    text-align: left;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: rgba(108, 92, 231, 0.06);
    color: var(--primary);
}

.top-navbar-user {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: 250px;
    /* Balance layout */
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    background: rgba(108, 92, 231, 0.04);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.8rem;
    box-shadow: 0 3px 12px rgba(108, 92, 231, 0.20);
}

.user-details {
    text-align: left;
    margin-right: 4px;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-heading);
    white-space: nowrap;
}

.user-role {
    font-size: 0.7rem;
    color: var(--text-light);
}

.btn-logout {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 6px;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.btn-logout:hover {
    color: var(--danger-dark);
    background: var(--danger-light);
}

/* Main Content Area */
.main-content {
    flex: 1;
    width: 100%;
}

/* Header — Glassmorphism */
.content-header {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 16px 28px;
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: calc(var(--header-height) - 10px);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text-heading);
    cursor: pointer;
    padding: 8px;
    border-radius: 10px;
    transition: background var(--transition-fast);
}

.hamburger:hover {
    background: rgba(108, 92, 231, 0.08);
}

.page-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-heading);
}

.header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.content-body {
    padding: 28px;
    animation: fadeInUp 0.4s ease both;
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(45, 27, 105, 0.25);
    backdrop-filter: blur(6px);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition);
}

.sidebar-overlay.show {
    display: block;
    opacity: 1;
}

/* ============================================================
   COMPONENTS
   ============================================================ */

/* Cards — Glassmorphism */
.card {
    background: var(--card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body {
    padding: 24px;
    margin-bottom: 20px;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: rgba(108, 92, 231, 0.02);
}

/* Stat Cards — Playful */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    padding: 24px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: 4px 4px 0 0;
}

.stat-card:hover {
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-lg);
}

.stat-card.blue::before {
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.stat-card.pink::before {
    background: linear-gradient(90deg, var(--accent), #FDCB6E);
}

.stat-card.green::before {
    background: linear-gradient(90deg, var(--success), #55EFC4);
}

.stat-card.orange::before {
    background: linear-gradient(90deg, #E17055, #FDCB6E);
}

.stat-card.purple::before {
    background: linear-gradient(90deg, #A29BFE, #FD79A8);
}

.stat-card.red::before {
    background: linear-gradient(90deg, var(--danger), #FAB1A0);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.stat-card.blue .stat-icon {
    background: rgba(108, 92, 231, 0.10);
    color: var(--primary);
}

.stat-card.pink .stat-icon {
    background: rgba(253, 121, 168, 0.10);
    color: var(--accent-dark);
}

.stat-card.green .stat-icon {
    background: rgba(0, 184, 148, 0.10);
    color: var(--success);
}

.stat-card.orange .stat-icon {
    background: rgba(225, 112, 85, 0.10);
    color: var(--warning-dark);
}

.stat-card.purple .stat-icon {
    background: rgba(162, 155, 254, 0.10);
    color: var(--primary-light);
}

.stat-card.red .stat-icon {
    background: rgba(255, 118, 117, 0.10);
    color: var(--danger);
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-heading);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 500;
}

/* Buttons — Pill-shaped */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius-pill);
    font-family: 'Sarabun', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.btn:hover::after {
    width: 300px;
    height: 300px;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent-dark));
    color: white;
    box-shadow: 0 3px 15px rgba(108, 92, 231, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 25px rgba(108, 92, 231, 0.35);
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #55EFC4);
    color: white;
    box-shadow: 0 3px 15px rgba(0, 184, 148, 0.25);
}

.btn-success:hover {
    box-shadow: 0 6px 25px rgba(0, 184, 148, 0.35);
    transform: translateY(-2px);
}

.btn-warning {
    background: linear-gradient(135deg, #FDCB6E, #E17055);
    color: white;
    box-shadow: 0 3px 15px rgba(225, 112, 85, 0.25);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), var(--danger-dark));
    color: white;
    box-shadow: 0 3px 15px rgba(255, 118, 117, 0.25);
}

.btn-danger:hover {
    box-shadow: 0 6px 25px rgba(255, 118, 117, 0.35);
    transform: translateY(-2px);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.7);
    border: 2px solid var(--border);
    color: var(--text-light);
    backdrop-filter: blur(6px);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(108, 92, 231, 0.05);
}

.btn-sm {
    padding: 6px 16px;
    font-size: 0.8rem;
    border-radius: var(--radius-pill);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    background: var(--card);
    backdrop-filter: blur(8px);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table thead {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.04), rgba(253, 121, 168, 0.04));
}

.table th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 700;
    color: var(--text-heading);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
    font-size: 0.85rem;
}

.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    color: var(--text);
    vertical-align: middle;
}

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

.table tbody tr:hover {
    background: rgba(108, 92, 231, 0.03);
}

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

/* Badges — Pill */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.badge-primary {
    background: rgba(108, 92, 231, 0.12);
    color: var(--primary);
}

.badge-success {
    background: var(--success-light);
    color: var(--success-dark);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning-dark);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger-dark);
}

.badge-info {
    background: var(--info-light);
    color: var(--info-dark);
}

.badge-accent {
    background: var(--accent-light);
    color: var(--accent-dark);
}

.badge-gold {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #5D4037;
}

.badge-silver {
    background: linear-gradient(135deg, #C0C0C0, #A8A8A8);
    color: #37474F;
}

.badge-bronze {
    background: linear-gradient(135deg, #CD7F32, #B8860B);
    color: white;
}

/* Forms — Rounded */
.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-heading);
}

.form-label .required {
    color: var(--accent-dark);
}

.form-control {
    width: 100%;
    padding: 11px 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-family: 'Sarabun', sans-serif;
    font-size: 0.95rem;
    color: var(--text);
    background: rgba(255, 255, 255, 0.85);
    transition: all var(--transition);
    box-sizing: border-box;
}

.form-control:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.12);
    background: white;
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C5CE7' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Modal — Glassmorphism */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(45, 27, 105, 0.30);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}

.modal {
    background: var(--card-solid);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.3s ease;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-heading);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-light);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--danger-light);
    color: var(--danger-dark);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* Search & Filter */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--card);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
}

.search-input {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.search-input input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border: 2px solid var(--border);
    border-radius: var(--radius-pill);
    font-family: 'Sarabun', sans-serif;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.8);
    transition: all var(--transition);
}

.search-input input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.10);
    background: white;
}

.search-input i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    opacity: 0.5;
}

.filter-select {
    padding: 10px 36px 10px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-pill);
    font-family: 'Sarabun', sans-serif;
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.8);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236C5CE7' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    cursor: pointer;
    transition: all var(--transition);
}

.filter-select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.10);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    color: var(--primary);
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-heading);
}

.empty-state p {
    font-size: 0.9rem;
    max-width: 400px;
    margin: 0 auto;
}

/* Loading Spinner */
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 40px auto;
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: inherit;
}

/* Competition Cards Grid */
.competitions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.competition-card {
    background: var(--card);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    overflow: hidden;
    transition: all var(--transition-bounce);
    cursor: pointer;
}

.competition-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(108, 92, 231, 0.15);
}

.competition-card-header {
    padding: 20px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.06), rgba(253, 121, 168, 0.06));
    border-bottom: 1px solid var(--border);
}

.competition-card-header h3 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: 8px;
}

.competition-card-body {
    padding: 20px;
}

.competition-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 8px;
}

.competition-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-light);
}

.competition-meta-item i {
    color: var(--primary);
    width: 14px;
}

/* Competition type badges */
.type-solo {
    background: rgba(108, 92, 231, 0.10);
    color: var(--primary);
}

.type-duo {
    background: rgba(253, 121, 168, 0.10);
    color: var(--accent-dark);
}

.type-team3 {
    background: rgba(0, 184, 148, 0.10);
    color: var(--success);
}

.type-team4 {
    background: rgba(253, 203, 110, 0.12);
    color: var(--warning-dark);
}

.type-team5 {
    background: rgba(116, 185, 255, 0.10);
    color: var(--info-dark);
}

/* Award level display */
.award-gold {
    color: #B7791F;
}

.award-silver {
    color: #718096;
}

.award-bronze {
    color: #9C4221;
}

.award-honorable {
    color: var(--info-dark);
}

.award-participant {
    color: var(--text-light);
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab {
    padding: 12px 22px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-family: 'Sarabun', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition);
    margin-bottom: -2px;
}

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

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 700;
}

/* Tooltip — Floating popup */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) scale(0.8);
    padding: 8px 14px;
    background: var(--text-heading);
    color: white;
    font-size: 0.75rem;
    border-radius: var(--radius);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-md);
}

[data-tooltip]:hover::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* SweetAlert2 custom theme */
.swal2-popup {
    font-family: 'Sarabun', 'TH Sarabun New', sans-serif !important;
    border-radius: var(--radius-xl) !important;
    font-size: 1rem !important;
}

.swal2-title {
    font-family: 'Sarabun', 'TH Sarabun New', sans-serif !important;
    font-weight: 800 !important;
    color: var(--text-heading) !important;
}

.swal2-html-container {
    font-family: 'Sarabun', 'TH Sarabun New', sans-serif !important;
}

/* ============================================================
   BOTTOM NAVIGATION BAR (Mobile/Tablet)
   ============================================================ */

.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 -4px 24px rgba(108, 92, 231, 0.08);
    padding: 6px 8px;
    padding-bottom: max(6px, env(safe-area-inset-bottom));
}

.bottom-nav-items {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 10px;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: 14px;
    transition: all 0.25s ease;
    color: var(--text-muted);
    font-family: 'Sarabun', sans-serif;
    min-width: 56px;
    position: relative;
}

.bottom-nav-item .nav-emoji {
    font-size: 1.35rem;
    line-height: 1;
    transition: transform 0.25s ease;
}

.bottom-nav-item .nav-label {
    font-size: 0.62rem;
    font-weight: 600;
    white-space: nowrap;
    transition: color 0.25s ease;
}

.bottom-nav-item:hover {
    color: var(--primary);
}

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

.bottom-nav-item.active .nav-emoji {
    transform: scale(1.15);
}

.bottom-nav-item.active::after {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 0 0 4px 4px;
}

/* More menu popup */
.bottom-nav-more-menu {
    display: none;
    position: absolute;
    bottom: calc(100% + 12px);
    right: 8px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    padding: 8px;
    min-width: 180px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.5);
    animation: scaleIn 0.2s ease;
    z-index: 210;
}

.bottom-nav-more-menu.show {
    display: block;
}

.bottom-nav-more-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius);
    color: var(--text);
    font-family: 'Sarabun', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    width: 100%;
    text-align: left;
    transition: all 0.2s ease;
}

.bottom-nav-more-item:hover {
    background: rgba(108, 92, 231, 0.06);
    color: var(--primary);
}

.bottom-nav-more-item .nav-emoji {
    font-size: 1.15rem;
}

.bottom-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 199;
}

.bottom-nav-overlay.show {
    display: block;
}

/* ============================================================
   BULK SELECT / DELETE
   ============================================================ */

.bulk-toolbar {
    display: none;
    position: sticky;
    top: var(--header-height);
    z-index: 45;
    background: linear-gradient(135deg, var(--primary), var(--accent-dark));
    color: white;
    padding: 10px 20px;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.25);
    animation: slideDown 0.3s ease both;
    margin: 0 -28px;
    margin-top: -28px;
    padding: 12px 28px;
    margin-bottom: 16px;
}

.bulk-toolbar.show {
    display: flex;
}

.bulk-count {
    font-weight: 700;
    font-size: 0.9rem;
}

.bulk-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

.bulk-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.15);
    color: white;
    font-family: 'Sarabun', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.bulk-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.bulk-btn-danger {
    background: rgba(214, 48, 49, 0.7);
    border-color: rgba(214, 48, 49, 0.5);
}

.bulk-btn-danger:hover {
    background: rgba(214, 48, 49, 0.9);
}

.bulk-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
    border-radius: 4px;
}

.bulk-checkbox-header {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

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

/* Tablet & Mobile — show bottom nav, hide sub-navbar-nav */
@media (max-width: 1024px) {
    .sub-navbar-nav {
        display: none;
    }

    .top-navbar-brand,
    .top-navbar-user {
        width: auto;
    }

    .main-content {
        padding-bottom: 80px;
    }

    .bottom-nav {
        display: block;
    }

    .content-header {
        background: rgba(255, 255, 255, 0.65);
        backdrop-filter: blur(20px);
    }

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

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

    .bulk-toolbar {
        margin: 0 -16px;
        margin-top: -16px;
        padding: 10px 16px;
        border-radius: 0 0 var(--radius) var(--radius);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .content-body {
        padding: 16px;
    }

    .content-header {
        padding: 12px 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
        border-radius: var(--radius-lg);
    }

    .stat-value {
        font-size: 1.6rem;
    }

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

    .filter-bar {
        flex-direction: column;
        border-radius: var(--radius-lg);
        padding: 12px 14px;
    }

    .search-input {
        width: 100%;
    }

    .filter-select {
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .btn-group {
        width: 100%;
    }

    .btn-group .btn {
        flex: 1;
        justify-content: center;
    }

    .table {
        font-size: 0.78rem;
    }

    .table th,
    .table td {
        padding: 8px 8px;
    }

    .card {
        border-radius: var(--radius-lg);
    }

    .card-body {
        padding: 14px;
    }

    .card-header {
        padding: 14px;
    }

    .modal {
        max-width: 100%;
        border-radius: var(--radius-lg);
        margin: 10px;
    }

    .page-title {
        font-size: 1.05rem;
    }
}

/* Small mobile */
@media (max-width: 400px) {
    .bottom-nav-item {
        min-width: 44px;
        padding: 6px 6px;
    }

    .bottom-nav-item .nav-label {
        font-size: 0.55rem;
    }

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

/* Print Styles */
@media print {

    .sidebar,
    .content-header,
    .filter-bar,
    .btn,
    .hamburger,
    .bottom-nav,
    .bulk-toolbar {
        display: none !important;
    }

    .main-content {
        margin-left: 0 !important;
        padding-bottom: 0 !important;
    }

    .content-body {
        padding: 0 !important;
    }

    body {
        background: white !important;
        animation: none !important;
    }

    .card {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
        break-inside: avoid;
        background: white !important;
        backdrop-filter: none !important;
    }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-center {
    text-align: center;
}

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

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

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

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

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

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

.text-muted {
    color: var(--text-muted);
}

.text-light {
    color: var(--text-light);
}

.text-bold {
    font-weight: 700;
}

.text-heading {
    color: var(--text-heading);
}

.mt-1 {
    margin-top: 8px;
}

.mt-2 {
    margin-top: 16px;
}

.mt-3 {
    margin-top: 24px;
}

.mb-1 {
    margin-bottom: 8px;
}

.mb-2 {
    margin-bottom: 16px;
}

.mb-3 {
    margin-bottom: 24px;
}

.ml-auto {
    margin-left: auto;
}

.mr-auto {
    margin-right: auto;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

.d-none {
    display: none;
}

.d-block {
    display: block;
}

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

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-1 {
    gap: 8px;
}

.gap-2 {
    gap: 16px;
}

.gap-3 {
    gap: 24px;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-1 {
    flex: 1;
}

.w-100 {
    width: 100%;
}

.rounded {
    border-radius: var(--radius);
}

.overflow-hidden {
    overflow: hidden;
}

.cursor-pointer {
    cursor: pointer;
}

.no-select {
    user-select: none;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}


/* ============================================================
   CAPSULE DESIGN
   ============================================================ */

.capsule-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.subject-capsule {
    display: flex;
    flex: 1 1 auto;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 6px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    font-family: 'Sarabun', sans-serif;
}

.subject-capsule:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(108, 92, 231, 0.15);
    border-color: var(--primary-light);
    background: linear-gradient(to right, var(--bg-card), var(--primary-50));
}

.subject-capsule.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.subject-capsule.active .capsule-name {
    color: white;
}

.subject-capsule.active .capsule-count {
    background: white;
    color: var(--primary);
}

.capsule-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-dark);
    margin-right: 12px;
}

.capsule-count {
    background: var(--primary);
    color: white;
    border-radius: 50px;
    padding: 2px 10px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: 0 2px 5px rgba(108, 92, 231, 0.3);
}

/* Custom Capsule Colors based on Subject */
.subject-capsule.capsule-success:hover { border-color: var(--success-light); background: linear-gradient(to right, var(--bg-card), var(--success-light)); }
.subject-capsule.capsule-success.active { border-color: var(--success); background: linear-gradient(135deg, var(--success-light) 0%, var(--success) 100%); box-shadow: 0 4px 15px rgba(0, 184, 148, 0.3); }
.subject-capsule.capsule-success .capsule-name { color: var(--success-dark); }
.subject-capsule.capsule-success.active .capsule-name { color: white; }
.subject-capsule.capsule-success .capsule-count { background: var(--success); }
.subject-capsule.capsule-success.active .capsule-count { background: white; color: var(--success-dark); }

.subject-capsule.capsule-warning:hover { border-color: var(--warning-light); background: linear-gradient(to right, var(--bg-card), var(--warning-light)); }
.subject-capsule.capsule-warning.active { border-color: var(--warning); background: linear-gradient(135deg, var(--warning-light) 0%, var(--warning) 100%); box-shadow: 0 4px 15px rgba(253, 203, 110, 0.3); }
.subject-capsule.capsule-warning .capsule-name { color: var(--warning-dark); }
.subject-capsule.capsule-warning.active .capsule-name { color: white; }
.subject-capsule.capsule-warning .capsule-count { background: var(--warning); }
.subject-capsule.capsule-warning.active .capsule-count { background: white; color: var(--warning-dark); }

.subject-capsule.capsule-danger:hover { border-color: var(--danger-light); background: linear-gradient(to right, var(--bg-card), var(--danger-light)); }
.subject-capsule.capsule-danger.active { border-color: var(--danger); background: linear-gradient(135deg, var(--danger-light) 0%, var(--danger) 100%); box-shadow: 0 4px 15px rgba(255, 118, 117, 0.3); }
.subject-capsule.capsule-danger .capsule-name { color: var(--danger-dark); }
.subject-capsule.capsule-danger.active .capsule-name { color: white; }
.subject-capsule.capsule-danger .capsule-count { background: var(--danger); }
.subject-capsule.capsule-danger.active .capsule-count { background: white; color: var(--danger-dark); }

.subject-capsule.capsule-info:hover { border-color: var(--info-light); background: linear-gradient(to right, var(--bg-card), var(--info-light)); }
.subject-capsule.capsule-info.active { border-color: var(--info); background: linear-gradient(135deg, var(--info-light) 0%, var(--info) 100%); box-shadow: 0 4px 15px rgba(116, 185, 255, 0.3); }
.subject-capsule.capsule-info .capsule-name { color: var(--info-dark); }
.subject-capsule.capsule-info.active .capsule-name { color: white; }
.subject-capsule.capsule-info .capsule-count { background: var(--info); }
.subject-capsule.capsule-info.active .capsule-count { background: white; color: var(--info-dark); }

.subject-capsule.capsule-accent:hover { border-color: var(--accent-light); background: linear-gradient(to right, var(--bg-card), var(--accent-light)); }
.subject-capsule.capsule-accent.active { border-color: var(--accent); background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%); box-shadow: 0 4px 15px rgba(253, 121, 168, 0.3); }
.subject-capsule.capsule-accent .capsule-name { color: var(--accent-dark); }
.subject-capsule.capsule-accent.active .capsule-name { color: white; }
.subject-capsule.capsule-accent .capsule-count { background: var(--accent); }
.subject-capsule.capsule-accent.active .capsule-count { background: white; color: var(--accent-dark); }

.subject-capsule.capsule-gold:hover { border-color: #FFF9E6; background: linear-gradient(to right, var(--bg-card), #FFF9E6); }
.subject-capsule.capsule-gold.active { border-color: #FFD700; background: linear-gradient(135deg, #FFF9E6 0%, #FFD700 100%); box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3); }
.subject-capsule.capsule-gold .capsule-name { color: #B8860B; }
.subject-capsule.capsule-gold.active .capsule-name { color: white; }
.subject-capsule.capsule-gold .capsule-count { background: #FFD700; color: #5D4037; }
.subject-capsule.capsule-gold.active .capsule-count { background: white; color: #B8860B; }