:root {
    --primary: #ab8b65;
    --primary-light: #c4a87e;
    --primary-dark: #784910;
    --gold: #e8c090;
    --gold-light: #f0d8b0;
    --coral: #E8967D;
    --bg: #ffffff;
    --bg-card: #FFFFFF;
    --text: #333333;
    --text-light: #747474;
    --border: #e0dede;
    --success: #ab8b65;
    --danger: #E07A5F;
    --shadow: 0 2px 12px rgba(171, 139, 101, 0.08);
    --shadow-lg: 0 8px 32px rgba(171, 139, 101, 0.12);
    --radius: 12px;
    --gradient-btn: linear-gradient(to top, #d69e5a, #e8c090);
    --gradient-btn-hover: linear-gradient(to top, #e8c090, #d69e5a);
}

* { box-sizing: border-box; }

body {
    font-family: 'PT Sans', 'Exo 2', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    margin: 0;
    line-height: 1.5;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: linear-gradient(180deg, #363839 0%, #282a2b 100%);
    color: white;
    padding: 0;
    z-index: 100;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.sidebar-brand h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.sidebar-brand .lotus-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 4px;
}

.sidebar-brand small {
    opacity: 0.7;
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.sidebar-nav {
    padding: 16px 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.sidebar-nav a.active {
    background: rgba(171, 139, 101, 0.2);
    color: white;
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

.sidebar-nav .nav-section {
    padding: 16px 24px 8px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.5;
}

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

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

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin: 0 0 4px;
    font-family: 'Exo 2', sans-serif;
}

.page-header p {
    color: var(--text-light);
    margin: 0;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

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

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    font-family: 'Exo 2', sans-serif;
}

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

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 24px;
}

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

.card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--primary-dark);
    font-family: 'Exo 2', sans-serif;
}

.card-body {
    padding: 24px;
}

.btn-primary {
    background: var(--gradient-btn);
    border-color: var(--primary);
    border-radius: 4px;
    font-weight: 700;
    padding: 8px 20px;
    transition: all 0.2s;
    color: var(--primary-dark);
    text-transform: uppercase;
    font-family: 'PT Sans', sans-serif;
    font-size: 0.85rem;
}

.btn-primary:hover {
    background: var(--gradient-btn-hover);
    border-color: var(--primary);
    color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-gold {
    background: var(--gradient-btn);
    border-color: var(--primary);
    color: var(--primary-dark);
    font-weight: 600;
    border-radius: 4px;
}

.btn-gold:hover {
    background: var(--gradient-btn-hover);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    border-radius: 4px;
    font-weight: 600;
}

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

.btn-sm {
    padding: 4px 12px;
    font-size: 0.8rem;
    border-radius: 4px;
}

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

.table {
    margin-bottom: 0;
}

.table th {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom-width: 1px;
}

.table td {
    vertical-align: middle;
    border-color: var(--border);
}

.table-hover tbody tr:hover {
    background: rgba(171, 139, 101, 0.03);
}

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

.badge-gold {
    background: var(--gold);
    color: white;
}

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

.form-control, .form-select {
    border-radius: 8px;
    border-color: var(--border);
    padding: 10px 14px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(171, 139, 101, 0.1);
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #363839 0%, #784910 50%, #ab8b65 100%);
    padding: 20px;
}

.login-card {
    background: white;
    border-radius: 16px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-card .brand {
    text-align: center;
    margin-bottom: 32px;
}

.login-card .brand .lotus {
    font-size: 3rem;
    display: block;
    margin-bottom: 8px;
}

.login-card .brand h1 {
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin: 0;
    font-weight: 700;
    font-family: 'Exo 2', sans-serif;
}

.login-card .brand p {
    color: var(--text-light);
    margin: 4px 0 0;
    font-size: 0.9rem;
}

.lotus-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.progress-bar-lotus {
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    height: 10px;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
}

.schedule-day {
    min-height: 120px;
}

.schedule-day h6 {
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border);
    font-family: 'Exo 2', sans-serif;
}

.schedule-item {
    background: rgba(171, 139, 101, 0.05);
    border-radius: 8px;
    padding: 8px 10px;
    margin-bottom: 6px;
    font-size: 0.8rem;
    border-left: 3px solid var(--gold);
    transition: transform 0.15s;
}

.schedule-item:hover {
    transform: translateX(2px);
}

.schedule-item .time {
    font-weight: 700;
    color: var(--primary-dark);
}

.schedule-item .type {
    color: var(--text);
}

.schedule-item .trainer {
    color: var(--text-light);
    font-size: 0.75rem;
}

.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-light);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.4;
}

.alert {
    border-radius: var(--radius);
    border: none;
}

.alert-success {
    background: rgba(171, 139, 101, 0.1);
    color: var(--primary-dark);
}

.alert-danger {
    background: rgba(224, 122, 95, 0.1);
    color: #8B3A2F;
}

.page-link {
    color: var(--primary);
    border-color: var(--border);
}

.page-link:hover {
    color: var(--primary-dark);
    background: rgba(171, 139, 101, 0.05);
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.show {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: 16px;
    }
    .schedule-grid {
        grid-template-columns: 1fr;
    }
}

.mobile-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 200;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 1.2rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
}