/* administrator/assets/css/admin.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-main: #f3f4f6;
    --bg-surface: #ffffff;
    --sidebar-bg: #111827;
    --sidebar-text: #9ca3af;
    --sidebar-text-active: #ffffff;
    --sidebar-hover: #1f2937;
    
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    
    --border-color: #e5e7eb;
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    
    --radius: 0.5rem;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: all 0.2s;
}

/* Layout */
.admin-sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    z-index: 50;
}

.admin-sidebar-header {
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.admin-sidebar-header h1 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
}

.admin-nav {
    flex: 1;
    padding: 0.5rem 0;
    overflow-y: auto;
}

.nav-group {
    margin-bottom: 0.25rem;
}

.nav-group-header {
    padding: 0.75rem 1.5rem 0.35rem 1.5rem;
    font-size: 0.675rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    transition: color 0.15s ease;
}

.nav-group-header:hover {
    color: #cbd5e1;
}

.nav-group-chevron {
    font-size: 0.65rem;
    transition: transform 0.2s ease;
    opacity: 0.75;
}

.nav-group.collapsed .nav-group-chevron {
    transform: rotate(-90deg);
}

.nav-group-body {
    overflow: hidden;
    transition: max-height 0.25s ease-in-out, opacity 0.2s ease;
    max-height: 600px;
    opacity: 1;
}

.nav-group.collapsed .nav-group-body {
    max-height: 0;
    opacity: 0;
    pointer-events: none;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    padding: 0.6rem 1.5rem;
    color: var(--sidebar-text);
    font-weight: 500;
    font-size: 0.85rem;
    gap: 0.75rem;
    transition: all 0.15s ease;
}

.admin-nav-item svg {
    width: 20px;
    height: 20px;
    opacity: 0.7;
}

.admin-nav-item:hover, .admin-nav-item.active {
    background-color: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.admin-nav-item.active svg {
    opacity: 1;
    color: var(--primary);
}

.admin-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.admin-topbar {
    height: 64px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.admin-topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
}

.admin-main {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* UI Elements */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.grid-cols-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    background-color: var(--bg-main);
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge.active { background: var(--success-bg); color: #065f46; }
.badge.pending { background: var(--warning-bg); color: #92400e; }
.badge.suspended { background: var(--danger-bg); color: #991b1b; }

/* Forms & Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); }

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.875rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}
.alert-success { background: var(--success-bg); color: #065f46; border: 1px solid #34d399; }
.alert-error { background: var(--danger-bg); color: #991b1b; border: 1px solid #f87171; }

/* Responsive */
@media (max-width: 768px) {
    .admin-sidebar {
        position: fixed;
        height: 100vh;
        transform: translateX(-100%);
    }
    .admin-sidebar.show {
        transform: translateX(0);
    }
    .mobile-menu-btn {
        display: block;
    }
    .admin-topbar {
        padding: 0 1rem;
    }
    .admin-main {
        padding: 1rem;
    }
}