/* SkillMeUp SaaS Admin Portal */

:root {
    --sidebar-width: 250px;
    --sidebar-bg: #1a1d23;
    --sidebar-text: #a0aec0;
    --sidebar-active: #4f8ef7;
    --sidebar-hover: #2d3748;
    --content-bg: #f4f6f9;
    --card-bg: #ffffff;
    --text-primary: #1a202c;
    --text-secondary: #718096;
    --border-color: #e2e8f0;
    --primary: #4f8ef7;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #f56565;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--content-bg);
    color: var(--text-primary);
}

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

/* Sidebar */
.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 1.25rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
}

.sidebar-nav {
    list-style: none;
    padding: 0.5rem 0;
    margin: 0;
    flex: 1;
}

.sidebar-nav .nav-section {
    padding: 1rem 1.5rem 0.4rem;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.3);
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: var(--sidebar-hover);
    color: #fff;
}

.sidebar-nav a.active {
    background: rgba(79, 142, 247, 0.12);
    color: var(--sidebar-active);
    border-left-color: var(--sidebar-active);
    font-weight: 600;
}

.sidebar-nav a i {
    width: 18px;
    text-align: center;
    font-size: 0.9rem;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.08);
    font-size: 0.8rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

/* Main Content */
.admin-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.content-header {
    padding: 1rem 2rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.content-body {
    padding: 1.5rem 2rem;
    flex: 1;
}

/* Cards */
.stat-card {
    background: var(--card-bg);
    border-radius: 0.5rem;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    transition: box-shadow 0.2s;
}

.stat-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: 0.25rem;
}

.stat-card .stat-icon {
    font-size: 1.5rem;
    opacity: 0.6;
}

/* Tables */
.admin-table {
    background: var(--card-bg);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.admin-table table {
    margin: 0;
}

.admin-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 0.75rem 1rem;
}

.admin-table td {
    padding: 0.75rem 1rem;
    vertical-align: middle;
    font-size: 0.875rem;
}

/* Status badges */
.badge-active { background: var(--success); }
.badge-inactive { background: var(--danger); }
.badge-provider { background: var(--primary); }

/* Login page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1d23 0%, #2d3748 100%);
}

.login-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.login-card h3 {
    text-align: center;
    margin-bottom: 0.25rem;
}

.login-card .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-sidebar { width: 60px; }
    .admin-sidebar .sidebar-brand span,
    .admin-sidebar .sidebar-nav span,
    .admin-sidebar .sidebar-footer { display: none; }
    .admin-sidebar .nav-section { display: none; }
    .admin-content { margin-left: 60px; }
    .content-body { padding: 1rem; }
}