/* Minimal Elara Design */
:root {
    --primary: #728461;
    --primary-dark: #5f6f52;
    --secondary: #8a9578;
    --success: #728461;
    --danger: #b8856a;
    --warning: #d4a574;
    --info: #728461;
    --dark: #3a3a3a;
    --light: #e5e0d8;
    --gray: #8a8a8a;
    --border: #d4cfc4;
    --shadow: 0 2px 8px rgba(114, 132, 97, 0.08);
    --shadow-lg: 0 8px 24px rgba(114, 132, 97, 0.12);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #faf9f7;
    color: var(--dark);
    line-height: 1.7;
    padding-bottom: 80px; /* Space for bottom menu */
    min-height: 100vh;
    letter-spacing: -0.01em;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}

/* Header - Safari: use transform for GPU layer */
.app-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1.25rem 1rem;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: 100px;
    height: auto;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.profile-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--light);
    color: var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.3s ease;
}

.profile-btn:hover {
    border-color: var(--primary);
    background: white;
}

.profile-btn img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

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

.card-title {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--dark);
    letter-spacing: 0.5px;
}

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 2px;
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    text-transform: uppercase;
}

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

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

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

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

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

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

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

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

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

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

.form-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 400;
    color: var(--dark);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border);
    border-radius: 2px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: #fafafa;
    font-weight: 300;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
}

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

select.form-control {
    cursor: pointer;
}

/* Bottom Navigation - Safari: GPU layer for fixed elements */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid var(--border);
    z-index: 100;
    padding: 0.5rem 0;
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

.nav-items {
    display: flex;
    justify-content: space-around;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--gray);
    transition: color 0.2s;
    flex: 1;
}

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

.nav-item i {
    font-size: 1.5rem;
}

.nav-item span {
    font-size: 0.75rem;
}

/* Grid */
.grid {
    display: grid;
    gap: 1rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    border-radius: 2px;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.badge-primary {
    background: rgba(114, 132, 97, 0.15);
    color: var(--primary);
}

.badge-success {
    background: rgba(114, 132, 97, 0.15);
    color: var(--success);
}

.badge-danger {
    background: rgba(184, 133, 106, 0.15);
    color: var(--danger);
}

.badge-warning {
    background: rgba(212, 165, 116, 0.15);
    color: var(--warning);
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 2px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    font-weight: 300;
}

.alert-success {
    background: rgba(114, 132, 97, 0.08);
    color: var(--success);
    border: 1px solid rgba(114, 132, 97, 0.3);
}

.alert-danger {
    background: rgba(184, 133, 106, 0.08);
    color: var(--danger);
    border: 1px solid rgba(184, 133, 106, 0.3);
}

.alert-info {
    background: rgba(114, 132, 97, 0.08);
    color: var(--info);
    border: 1px solid rgba(114, 132, 97, 0.3);
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--gray);
}

.spinner {
    border: 3px solid var(--border);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Class Card */
.class-card {
    background: white;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.class-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.class-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.class-card-body {
    padding: 1.5rem;
}

.class-card-title {
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: 0.75rem;
    color: var(--dark);
    letter-spacing: 0.5px;
}

.class-card-info {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 1rem;
    font-weight: 300;
}

.class-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

/* Package Card */
.package-card {
    background: var(--primary);
    color: white;
    border-radius: 4px;
    padding: 2rem;
    border: 1px solid var(--primary);
    transition: all 0.3s ease;
}

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

.package-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 0.75rem;
    margin-bottom: 1rem;
}

.package-price {
    font-size: 2.5rem;
    font-weight: 300;
    margin: 1rem 0;
    letter-spacing: -1px;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 4px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--primary);
    letter-spacing: -1px;
}

.stat-label {
    color: var(--gray);
    font-size: 0.85rem;
    margin-top: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 400;
}

/* Modal - avoid backdrop-filter on Safari (causes slowness) */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(114, 132, 97, 0.4);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 4px;
    padding: 2.5rem;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    color: var(--dark);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
}

/* Signature Canvas */
.signature-canvas {
    border: 2px solid var(--border);
    border-radius: 8px;
    cursor: crosshair;
    background: white;
}

/* QR Code */
.qr-code {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

/* Admin Stats - Special handling for 4 boxes */
.admin-stats {
    grid-template-columns: repeat(4, 1fr);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Admin stats: keep 2 columns on tablets */
    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        margin-bottom: 1.5rem;
    }
    
    .admin-stats .stat-card {
        padding: 1.25rem 0.75rem;
    }
    
    .admin-stats .stat-value {
        font-size: 1.75rem;
    }
    
    .admin-stats .stat-label {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    /* Admin stats: single column on mobile */
    .admin-stats {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        margin-bottom: 1rem;
    }
    
    .admin-stats .stat-card {
        padding: 1rem 0.75rem;
    }
    
    .admin-stats .stat-value {
        font-size: 1.5rem;
    }
    
    .nav-item {
        padding: 0.5rem 0.25rem;
    }
    
    .nav-item span {
        font-size: 0.7rem;
    }
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light);
    padding: 1rem;
}

.login-card {
    background: white;
    border-radius: 4px;
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border);
}

.login-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--dark);
    margin-bottom: 2.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Rating Stars */
.rating {
    display: flex;
    gap: 0.25rem;
    font-size: 1.5rem;
}

.star {
    color: #d1d5db;
    cursor: pointer;
    transition: color 0.2s;
}

.star.active {
    color: #fbbf24;
}

/* Empty State */
.hidden {
    display: none !important;
}

.empty-state {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--gray);
}

.empty-state p {
    font-weight: 300;
    font-size: 0.95rem;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    opacity: 0.4;
}

/* Tables */
table {
    border-collapse: collapse;
    font-size: 0.95rem;
}

table th {
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
    color: var(--gray);
}

table td {
    font-weight: 300;
}

/* Website header (public pages) - responsive */
.website-header {
    background: white;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.website-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo img {
    height: 24px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--gray);
    font-weight: 300;
    letter-spacing: 0.5px;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

/* Hamburger: hidden on desktop, shown only in mobile media query below */
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--border);
    background: white;
    color: var(--dark);
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.25rem;
    transition: background 0.2s, color 0.2s;
}

@media (min-width: 769px) {
    .nav-toggle {
        display: none !important;
    }
}

.nav-toggle:hover {
    background: var(--light);
    color: var(--primary);
}

.nav-toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.nav-toggle .nav-toggle-close {
    display: none;
}

.website-header.nav-open .nav-toggle .nav-toggle-open {
    display: none;
}

.website-header.nav-open .nav-toggle .nav-toggle-close {
    display: inline-block;
}

@media (max-width: 768px) {
    .website-nav {
        padding: 1rem 1.25rem;
    }

    .nav-toggle {
        display: flex !important;
        position: relative;
        z-index: 101;
    }

    .nav-links {
        display: none !important;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: 1rem 1.25rem;
        background: white;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        z-index: 100;
    }

    .website-header.nav-open .nav-links {
        display: flex !important;
    }

    .nav-links .nav-link {
        display: block;
        padding: 0.875rem 0;
        border-bottom: 1px solid var(--border);
        text-align: left;
        width: 100%;
    }

    .nav-links .nav-link:last-of-type {
        border-bottom: 1px solid var(--border);
    }

    .nav-links .btn {
        display: block;
        width: 100%;
        margin-top: 1rem;
        padding: 0.875rem 1.25rem;
        text-align: center;
        border-radius: 4px;
        border: none;
        font-size: 0.95rem;
        text-decoration: none;
    }

    .nav-links .btn.btn-primary {
        background: var(--primary);
        color: white;
    }
}

/* Website footer (public pages) - responsive */
@media (max-width: 768px) {
    .website-footer {
        padding: 2rem 1rem 1.5rem !important;
    }
}