/* * MODERN UI DESIGN SYSTEM - MATERIAL 3 INSPIRED
 * Based on 12-modern-ui-design-system.md
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* --- Level 1: Neutral Foundation --- */
    --surface-1: #FFFFFF;
    --surface-2: #F7F9FC; /* Dashboard Background */
    --surface-3: #EFF3F8; /* Card Background */
    --surface-4: #E4EAF0;
    
    --text-primary: rgba(0, 0, 0, 0.87);
    --text-secondary: rgba(0, 0, 0, 0.60);
    --text-tertiary: rgba(0, 0, 0, 0.38);
    
    --border-light: rgba(0, 0, 0, 0.08);
    --border-medium: rgba(0, 0, 0, 0.12);

    /* --- Level 2: Semantic Colors --- */
    --success-main: #10B981;
    --success-bg: #ECFDF5;
    --success-text: #065F46;
    
    --warning-main: #F59E0B;
    --warning-bg: #FFFBEB;
    --warning-text: #92400E;
    
    --error-main: #EF4444;
    
    /* --- Level 3: Dynamic Tenant Accent (Defaults, overridden by Layout) --- */
    --accent-primary: #1e3a8a;      /* Tenant Primary */
    --accent-primary-light: #3b82f6; 
    --accent-primary-subtle: #eff6ff;
    --accent-on-primary: #FFFFFF;

    /* --- Elevation & Shadows --- */
    --elevation-1: 0px 1px 2px rgba(0, 0, 0, 0.06), 0px 1px 3px rgba(0, 0, 0, 0.10);
    --elevation-2: 0px 2px 4px rgba(0, 0, 0, 0.06), 0px 4px 6px rgba(0, 0, 0, 0.10);
    --elevation-3: 0px 4px 6px rgba(0, 0, 0, 0.06), 0px 10px 15px rgba(0, 0, 0, 0.10);

    /* --- Spacing & Sizing --- */
    --radius-md: 12px;
    --radius-lg: 16px;
    --header-height: 64px;
    --sidebar-width: 260px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--surface-2);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 0.9375rem; /* 15px */
}

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

.sidebar {
    width: var(--sidebar-width);
    background: var(--surface-1);
    border-right: 1px solid var(--border-light);
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem;
}

/* --- Navigation Items --- */
.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: 0 24px 24px 0;
    margin-right: 16px;
    transition: all 0.2s;
}

.nav-link:hover {
    background-color: var(--surface-2);
    color: var(--accent-primary);
}

.nav-link.active {
    background-color: var(--accent-primary-subtle);
    color: var(--accent-primary);
    font-weight: 600;
}

.nav-link i {
    width: 20px;
    text-align: center;
}

/* --- Stat Cards (Material 3) --- */
.stat-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface-1);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--elevation-1);
    border: 1px solid var(--border-light);
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* --- Modern Tables --- */
.table-container {
    background: var(--surface-1);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-1);
    border: 1px solid var(--border-light);
    overflow: hidden;
}

.table-modern {
    width: 100%;
    border-collapse: collapse;
}

.table-modern thead {
    background: var(--surface-2);
    border-bottom: 1px solid var(--border-medium);
}

.table-modern th {
    padding: 1rem 1.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
    text-align: left;
}

.table-modern td {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-primary);
    vertical-align: middle;
}

.table-modern tr:last-child td {
    border-bottom: none;
}

/* --- Badges --- */
.badge-modern {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-success { background: var(--success-bg); color: var(--success-text); }
.badge-warning { background: var(--warning-bg); color: var(--warning-text); }

/* --- Mobile --- */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-content { margin-left: 0; padding: 1rem; }
    .sidebar.active { transform: translateX(0); }
}