/* ===================================================
   Dikili Belediyesi Tenis Kort Rezervasyon Sistemi
   Ana Stil Dosyası — Beyaz Tema
   =================================================== */

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

/* ===== CSS Variables ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #93c5fd;
    --accent: #0ea5e9;
    --success: #16a34a;
    --success-dark: #15803d;
    --warning: #d97706;
    --warning-dark: #b45309;
    --danger: #dc2626;
    --danger-dark: #b91c1c;

    --bg-body: #f0f4f8;
    --bg-white: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-subtle: #f1f5f9;
    --border-color: #e2e8f0;
    --border-focus: rgba(37, 99, 235, 0.5);

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-on-primary: #ffffff;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 4px 20px rgba(37, 99, 235, 0.1);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }

/* ===== Header / Navbar ===== */
.navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.15rem;
}

.navbar-brand .logo {
    font-size: 1.6rem;
}

.navbar-brand span {
    color: var(--primary);
}

.navbar-info {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===== Main Container ===== */
.main-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px 60px;
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--primary);
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Step Indicator ===== */
.steps {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 36px;
}

.step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    transition: var(--transition);
}

.step .step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--bg-subtle);
    color: var(--text-muted);
    flex-shrink: 0;
}

.step.active {
    background: #eff6ff;
    border-color: var(--primary-light);
    color: var(--primary);
}

.step.active .step-num {
    background: var(--primary);
    color: var(--text-on-primary);
}

.step.completed {
    background: #f0fdf4;
    border-color: #86efac;
    color: var(--success);
}

.step.completed .step-num {
    background: var(--success);
    color: white;
}

.step-connector {
    width: 30px;
    height: 2px;
    background: var(--border-color);
    align-self: center;
}

/* ===== Card ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.card-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

/* ===== Court Selection ===== */
.court-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
}

.court-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.court-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.court-card:hover {
    border-color: var(--primary-light);
    background: #f8faff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.court-card:hover::before {
    opacity: 1;
}

.court-card.selected {
    border-color: var(--primary);
    background: #eff6ff;
}

.court-card.selected::before {
    opacity: 1;
}

.court-card .court-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.court-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.court-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.court-card .court-hours {
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ===== Date Picker ===== */
.date-input-wrapper {
    position: relative;
}

.date-input-wrapper input[type="date"] {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.date-input-wrapper input[type="date"]:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.date-input-wrapper input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
}

.date-boxes::-webkit-scrollbar {
    height: 6px;
}
.date-boxes::-webkit-scrollbar-track {
    background: var(--bg-subtle);
    border-radius: 4px;
}
.date-boxes::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
.date-boxes::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.date-box {
    min-width: 70px;
    padding: 10px 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    flex-shrink: 0;
}

.date-box:hover {
    border-color: var(--primary-light);
    background: #eff6ff;
    transform: translateY(-2px);
}

.date-box.selected {
    background: var(--primary);
    color: var(--text-on-primary);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.date-box .day-name {
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 4px;
    text-transform: uppercase;
    opacity: 0.8;
}

.date-box .day-num {
    font-size: 1.2rem;
    font-weight: 700;
}

.date-box .month-name {
    font-size: 0.7rem;
    opacity: 0.8;
}

/* ===== Time Slots ===== */
.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}

.slot-btn {
    padding: 12px 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.slot-btn:hover:not(.occupied):not(.pending) {
    border-color: var(--primary-light);
    background: #eff6ff;
    transform: translateY(-1px);
}

.slot-btn.selected {
    background: var(--primary);
    color: var(--text-on-primary);
    border-color: transparent;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.25);
}

.slot-btn.occupied {
    background: #fef2f2;
    border-color: #fecaca;
    color: #b91c1c;
    cursor: not-allowed;
    text-decoration: line-through;
    font-size: 0.8rem;
}



/* Slot Legend */
.slots-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

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

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 4px;
    flex-shrink: 0;
}

.legend-dot.available {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
}

.legend-dot.occupied {
    background: #fef2f2;
    border: 1px solid #fecaca;
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-on-primary);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: var(--success-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(22, 163, 74, 0.25);
}

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

.btn-danger:hover {
    background: var(--danger-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.25);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--bg-subtle);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 36px;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.95);
    transition: var(--transition);
    text-align: center;
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.modal p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.verification-input {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 24px;
}

.verification-input input {
    width: 48px;
    height: 56px;
    text-align: center;
    font-size: 1.4rem;
    font-weight: 700;
    background: var(--bg-subtle);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}

.verification-input input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-white);
}

/* ===== Success / Result Screen ===== */
.result-screen {
    text-align: center;
    padding: 40px 20px;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.result-screen h2 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.result-screen p {
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto 24px;
}

.result-details {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin: 20px auto;
    max-width: 400px;
    text-align: left;
}

.result-details .detail-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.result-details .detail-row:last-child {
    border-bottom: none;
}

.result-details .detail-label {
    color: var(--text-secondary);
}

.result-details .detail-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Alert / Toast ===== */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease;
}

.alert-danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
}

.alert-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #15803d;
}

.alert-warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #b45309;
}

.alert-info {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1d4ed8;
}

/* ===== Loading Spinner ===== */
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 20px auto;
}

.loading-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 12px;
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.badge-success {
    background: #f0fdf4;
    color: var(--success);
    border: 1px solid #bbf7d0;
}

.badge-warning {
    background: #fffbeb;
    color: var(--warning);
    border: 1px solid #fde68a;
}

.badge-danger {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

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

.badge-primary {
    background: #eff6ff;
    color: var(--primary);
    border: 1px solid #bfdbfe;
}

/* ===== Section Divider ===== */
.section-step {
    display: none;
}

.section-step.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
}

/* ==============================
   ADMIN PANEL STYLES
   ============================== */

/* Admin Layout */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    background: var(--bg-white);
    border-right: 1px solid var(--border-color);
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

.sidebar-header small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.sidebar-nav {
    padding: 16px 12px;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
}

.sidebar-nav a:hover {
    background: var(--bg-subtle);
    color: var(--text-primary);
}

.sidebar-nav a.active {
    background: #eff6ff;
    color: var(--primary);
    font-weight: 600;
}

.sidebar-nav a .nav-icon {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--border-color);
}

.admin-content {
    margin-left: 260px;
    flex: 1;
    padding: 32px;
    min-height: 100vh;
}

.admin-page-header {
    margin-bottom: 32px;
}

.admin-page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.admin-page-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

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

.stat-card .stat-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Admin Table */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

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

.admin-table thead {
    background: var(--bg-subtle);
}

.admin-table th {
    padding: 14px 18px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.admin-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
    color: var(--text-primary);
}

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

.admin-table tbody tr:hover {
    background: var(--bg-subtle);
}

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

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

/* Admin Forms */
.admin-form {
    max-width: 600px;
}

.admin-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Filter Bar */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
    align-items: center;
}

.filter-bar select,
.filter-bar input {
    padding: 10px 14px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
    transition: var(--transition);
}

.filter-bar select:focus,
.filter-bar input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.filter-bar select option {
    background: var(--bg-white);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--bg-body);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--primary);
}

.login-card .subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.login-card .form-group {
    text-align: left;
}

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

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* Toggle Switch */
.toggle {
    position: relative;
    width: 44px;
    height: 24px;
    display: inline-block;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: #cbd5e1;
    border-radius: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    left: 3px;
    top: 3px;
    transition: var(--transition);
}

.toggle input:checked + .toggle-slider {
    background: var(--success);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

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

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

@keyframes bounceIn {
    0% { opacity: 0; transform: scale(0.3); }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .steps {
        flex-wrap: wrap;
        gap: 6px;
    }

    .step {
        font-size: 0.75rem;
        padding: 6px 10px;
    }

    .step-connector {
        display: none;
    }

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

    .slots-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .card {
        padding: 24px 20px;
    }

    .main-container {
        padding: 20px 16px 40px;
    }

    /* Admin Mobile */
    .admin-sidebar {
        width: 0;
        overflow: hidden;
    }

    .admin-sidebar.open {
        width: 260px;
    }

    .admin-content {
        margin-left: 0;
        padding: 20px 16px;
    }

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

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

    .filter-bar {
        flex-direction: column;
    }

    .filter-bar select,
    .filter-bar input {
        width: 100%;
    }

    .admin-table {
        font-size: 0.8rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .slots-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .verification-input input {
        width: 42px;
        height: 48px;
        font-size: 1.2rem;
    }

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

/* Mobile Menu Toggle */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
        position: fixed;
        top: 16px;
        left: 16px;
        z-index: 200;
        background: var(--bg-white);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-sm);
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: var(--shadow-sm);
    }
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 24px;
}

.pagination a,
.pagination span {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    color: var(--text-primary);
}

.pagination a:hover {
    background: var(--bg-subtle);
    border-color: var(--primary);
    color: var(--primary);
}

.pagination .active {
    background: var(--primary);
    color: var(--text-on-primary);
    border-color: transparent;
    font-weight: 600;
}

/* Utility */
.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; }
.gap-2 { gap: 12px; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.hidden { display: none; }