:root {
    --primary: #0f2042;
    --primary-light: #1e3a5f;
    --accent: #4f8cff;
    --accent2: #00d4aa;
    --bg: #f7f9fc;
    --surface: #ffffff;
    --text: #1a2332;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --sidebar-width: 260px;
    --header-height: 64px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--primary);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1040;
    overflow-y: auto;
    transition: var(--transition);
}

.sidebar-brand {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sidebar-brand .text-accent { color: var(--accent); font-size: 1.2rem; }
.sidebar-brand .brand-name { color: #fff; font-weight: 700; font-size: 1.05rem; }
.sidebar-brand .brand-badge {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    padding: 2px 8px;
    border-radius: 5px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    border-radius: 10px;
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.sidebar-nav .nav-item:hover {
    color: #fff;
    background: rgba(255,255,255,0.06);
}

.sidebar-nav .nav-item.active {
    color: #fff;
    background: rgba(79,140,255,0.18);
}

.sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 0.95rem; }

.nav-badge {
    margin-left: auto;
    background: #ef4444;
    color: #fff;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 700;
}

.sidebar-divider {
    height: 1px;
    background: rgba(255,255,255,0.06);
    margin: 12px 8px;
}

/* Main Content */
.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.admin-header {
    height: var(--header-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 28px;
    gap: 20px;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.sidebar-toggle {
    color: var(--text);
    font-size: 1.2rem;
    padding: 4px 8px;
}

.header-search {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.header-search i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.header-search .form-control {
    padding-left: 40px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 0.88rem;
    background: var(--bg);
}

.header-search .form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,140,255,0.08);
}

.header-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 16px;
}

.admin-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Content */
.admin-content {
    padding: 28px;
    flex: 1;
}

/* Dashboard Cards */
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
    transition: var(--transition);
}

.stat-card:hover { box-shadow: 0 4px 20px rgba(15,32,66,0.08); }

.stat-card .stat-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.stat-icon.blue { background: rgba(79,140,255,0.1); color: #4f8cff; }
.stat-icon.green { background: rgba(0,212,170,0.1); color: #00d4aa; }
.stat-icon.purple { background: rgba(139,92,246,0.1); color: #8b5cf6; }
.stat-icon.orange { background: rgba(255,140,50,0.1); color: #ff8c32; }
.stat-icon.red { background: rgba(239,68,68,0.1); color: #ef4444; }
.stat-icon.teal { background: rgba(20,184,166,0.1); color: #14b8a6; }

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 4px;
}

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

/* Tables */
.admin-table-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

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

.admin-table-card .card-header h5 {
    font-weight: 700;
    margin: 0;
    font-size: 1.05rem;
}

.admin-table {
    width: 100%;
    margin: 0;
}

.admin-table thead th {
    background: #f8fafc;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.admin-table tbody td {
    padding: 14px 20px;
    border-bottom: 1px solid #f1f5f9;
    font-size: 0.9rem;
    vertical-align: middle;
}

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

/* Badges */
.badge-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success { background: rgba(0,212,170,0.12); color: #00d4aa; }
.badge-warning { background: rgba(255,140,50,0.12); color: #ff8c32; }
.badge-danger { background: rgba(239,68,68,0.12); color: #ef4444; }
.badge-info { background: rgba(79,140,255,0.12); color: #4f8cff; }

/* Forms */
.admin-form .form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.admin-form .form-control,
.admin-form .form-select {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.admin-form .form-control:focus,
.admin-form .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(79,140,255,0.1);
}

/* Buttons */
.btn-admin {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 10px 24px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-admin:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(79,140,255,0.3);
    color: #fff;
}

.btn-admin-outline {
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 10px;
    padding: 10px 24px;
    font-weight: 600;
    font-size: 0.9rem;
    background: transparent;
    transition: var(--transition);
}

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

/* Page Title */
.page-title {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(15,32,66,0.15);
}

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

.modal-body { padding: 24px; }
.modal-footer { border-top: 1px solid var(--border); padding: 16px 24px; }

/* Media Grid */
.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.media-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--surface);
    transition: var(--transition);
}

.media-item:hover {
    box-shadow: 0 4px 20px rgba(15,32,66,0.08);
    transform: translateY(-2px);
}

.media-item img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background: var(--bg);
}

.media-item .media-info {
    padding: 12px;
}

.media-item .media-info h6 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.media-item .media-info small {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Login Page */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a1628 0%, #0f2042 40%, #1a3a6a 100%);
}

.login-card {
    background: var(--surface);
    border-radius: 20px;
    padding: 48px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

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

.login-card .login-logo i { color: var(--accent); font-size: 2rem; }

.login-card .login-logo h4 {
    font-weight: 800;
    margin-top: 12px;
}

/* Overlay */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 1035;
    display: none;
}

.sidebar-overlay.active { display: block; }

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

.empty-state i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

/* Responsive */
@media (max-width: 991.98px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    .admin-sidebar.open {
        transform: translateX(0);
    }
    .admin-main {
        margin-left: 0;
    }
    .admin-content { padding: 20px 16px; }
}

@media (max-width: 767.98px) {
    .admin-header { padding: 0 16px; }
    .stat-card { padding: 18px; }
    .stat-card .stat-value { font-size: 1.4rem; }
    .admin-table-card .card-header { flex-direction: column; gap: 12px; align-items: flex-start; }
}