/* ============================================================
   DataCar Design System v1.0

   Single source of truth for all DataCar portals.
   Used by: www.datacar.io, admin.datacar.io

   Whitelabel: Override --dc-brand-* variables per tenant.
   ============================================================ */

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

/* --- 1. Design Tokens --- */
:root {
    /* Brand (overridden by tenant branding) */
    --dc-brand:        #0066cc;
    --dc-brand-dark:   #004d99;
    --dc-brand-light:  #e6f0ff;

    /* Neutrals */
    --dc-white:        #ffffff;
    --dc-gray-50:      #f9fafb;
    --dc-gray-100:     #f3f4f6;
    --dc-gray-200:     #e5e7eb;
    --dc-gray-300:     #d1d5db;
    --dc-gray-400:     #9ca3af;
    --dc-gray-500:     #6b7280;
    --dc-gray-600:     #4b5563;
    --dc-gray-700:     #374151;
    --dc-gray-800:     #1f2937;
    --dc-gray-900:     #111827;

    /* Semantic */
    --dc-success:      #059669;
    --dc-success-light:#ecfdf5;
    --dc-danger:       #dc2626;
    --dc-danger-light: #fef2f2;
    --dc-warning:      #d97706;
    --dc-warning-light:#fffbeb;
    --dc-info:         #2563eb;
    --dc-info-light:   #eff6ff;

    /* Typography */
    --dc-font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --dc-font-mono:    'SF Mono', 'Fira Code', 'Consolas', monospace;
    --dc-text:         var(--dc-gray-800);
    --dc-text-muted:   var(--dc-gray-500);

    /* Spacing */
    --dc-space-xs:     4px;
    --dc-space-sm:     8px;
    --dc-space-md:     16px;
    --dc-space-lg:     24px;
    --dc-space-xl:     32px;
    --dc-space-2xl:    48px;

    /* Borders */
    --dc-radius-sm:    4px;
    --dc-radius:       8px;
    --dc-radius-lg:    12px;
    --dc-radius-full:  9999px;
    --dc-border:       1px solid var(--dc-gray-200);

    /* Layout */
    --dc-sidebar-w:    250px;
    --dc-topbar-h:     56px;
}

/* --- 2. Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--dc-font);
    color: var(--dc-text);
    background: var(--dc-gray-50);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--dc-brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1 { font-size: 1.5rem; font-weight: 700; }
h2 { font-size: 1.25rem; font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }

code, pre { font-family: var(--dc-font-mono); font-size: 0.875em; }
code { background: var(--dc-gray-100); padding: 2px 6px; border-radius: var(--dc-radius-sm); }

/* --- 3. Layout --- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: var(--dc-sidebar-w);
    background: var(--dc-brand);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-brand {
    padding: var(--dc-space-lg);
    display: flex;
    align-items: center;
    gap: var(--dc-space-sm);
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.sidebar-nav { flex: 1; padding: var(--dc-space-sm) 0; }

.nav-section { margin-bottom: var(--dc-space-xs); }

.nav-section-title {
    padding: var(--dc-space-md) var(--dc-space-lg) var(--dc-space-xs);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255,255,255,0.5);
}

.nav-link {
    display: block;
    padding: var(--dc-space-sm) var(--dc-space-lg);
    color: rgba(255,255,255,0.85);
    font-size: 0.875rem;
    font-weight: 400;
    text-decoration: none;
    transition: background 0.15s;
}
.nav-link:hover { background: var(--dc-brand-dark); text-decoration: none; color: white; }
.nav-link.active { background: var(--dc-brand-dark); color: white; font-weight: 500; }

.sidebar-footer {
    padding: var(--dc-space-sm) 0;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.content {
    margin-left: var(--dc-sidebar-w);
    flex: 1;
    padding: var(--dc-space-lg) var(--dc-space-xl);
    min-height: 100vh;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--dc-space-lg);
    padding-bottom: var(--dc-space-md);
    border-bottom: var(--dc-border);
}

.page-title { font-size: 1.5rem; font-weight: 700; }
.topbar-actions { display: flex; gap: var(--dc-space-xs); }

/* --- 4. Cards --- */
.card {
    background: var(--dc-white);
    border: var(--dc-border);
    border-radius: var(--dc-radius);
    overflow: hidden;
}
.card-header {
    padding: var(--dc-space-md) var(--dc-space-lg);
    border-bottom: var(--dc-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-title { font-weight: 600; font-size: 0.95rem; }
.card-body { padding: var(--dc-space-lg); }

/* KPI Card */
.kpi-card { padding: var(--dc-space-lg); text-align: center; }
.kpi-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--dc-text-muted);
    margin-bottom: var(--dc-space-xs);
}
.kpi-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dc-brand);
    line-height: 1.2;
}

/* --- 5. Tables --- */
.table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.table th {
    text-align: left;
    padding: var(--dc-space-sm) var(--dc-space-md);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--dc-text-muted);
    border-bottom: 2px solid var(--dc-gray-200);
}
.table td {
    padding: var(--dc-space-sm) var(--dc-space-md);
    border-bottom: 1px solid var(--dc-gray-100);
    vertical-align: middle;
}
.table tbody tr:hover { background: var(--dc-gray-50); }
.table tfoot td { border-top: 2px solid var(--dc-gray-200); font-weight: 600; }

/* --- 6. Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--dc-space-xs);
    padding: 8px 16px;
    font-family: var(--dc-font);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--dc-radius);
    border: var(--dc-border);
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    line-height: 1.4;
}
.btn:hover { text-decoration: none; }
.btn-primary {
    background: var(--dc-brand);
    color: white;
    border-color: var(--dc-brand);
}
.btn-primary:hover { background: var(--dc-brand-dark); border-color: var(--dc-brand-dark); }
.btn-secondary {
    background: var(--dc-white);
    color: var(--dc-gray-700);
}
.btn-secondary:hover { background: var(--dc-gray-50); }
.btn-danger {
    background: var(--dc-danger);
    color: white;
    border-color: var(--dc-danger);
}
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-lg { padding: 12px 24px; font-size: 1rem; }

/* --- 7. Forms --- */
.form-group { margin-bottom: var(--dc-space-md); }
.form-group label, .form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--dc-gray-700);
    margin-bottom: var(--dc-space-xs);
}
.form-control, .form-input {
    width: 100%;
    padding: 8px 12px;
    font-family: var(--dc-font);
    font-size: 0.875rem;
    border: var(--dc-border);
    border-radius: var(--dc-radius);
    background: var(--dc-white);
    color: var(--dc-text);
    transition: border-color 0.15s;
}
.form-control:focus, .form-input:focus {
    outline: none;
    border-color: var(--dc-brand);
    box-shadow: 0 0 0 3px var(--dc-brand-light);
}
select.form-control { appearance: auto; }

/* --- 8. Badges --- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--dc-radius-full);
}
.badge-green  { background: var(--dc-success-light); color: var(--dc-success); }
.badge-red    { background: var(--dc-danger-light); color: var(--dc-danger); }
.badge-yellow { background: var(--dc-warning-light); color: var(--dc-warning); }
.badge-blue   { background: var(--dc-info-light); color: var(--dc-info); }
.badge-gray   { background: var(--dc-gray-100); color: var(--dc-gray-600); }

/* --- 9. Status Dots --- */
.status-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--dc-gray-300);
}
.status-dot.green  { background: var(--dc-success); }
.status-dot.red    { background: var(--dc-danger); }
.status-dot.yellow { background: var(--dc-warning); }

/* --- 10. Alerts --- */
.alert {
    padding: var(--dc-space-md);
    border-radius: var(--dc-radius);
    margin-bottom: var(--dc-space-md);
    font-size: 0.875rem;
}
.alert-success { background: var(--dc-success-light); color: var(--dc-success); border: 1px solid #a7f3d0; }
.alert-error, .alert-danger { background: var(--dc-danger-light); color: var(--dc-danger); border: 1px solid #fecaca; }
.alert-warning { background: var(--dc-warning-light); color: var(--dc-warning); border: 1px solid #fde68a; }
.alert-info    { background: var(--dc-info-light); color: var(--dc-info); border: 1px solid #bfdbfe; }

/* --- 11. Grids --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--dc-space-md); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--dc-space-md); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--dc-space-md); }
.kpi-grid { margin-bottom: var(--dc-space-lg); }

/* --- 12. Empty State --- */
.empty-state {
    text-align: center;
    padding: var(--dc-space-2xl);
    color: var(--dc-text-muted);
}
.empty-state p { margin-bottom: var(--dc-space-md); }

/* --- 13. Tabs --- */
.tabs { display: flex; border-bottom: 2px solid var(--dc-gray-200); margin-bottom: var(--dc-space-lg); }
.tab {
    padding: var(--dc-space-sm) var(--dc-space-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--dc-text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    text-decoration: none;
}
.tab:hover { color: var(--dc-text); }
.tab.active { color: var(--dc-brand); border-bottom-color: var(--dc-brand); }

/* --- 14. Login Page --- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--dc-gray-50);
}
.login-card {
    background: var(--dc-white);
    border: var(--dc-border);
    border-radius: var(--dc-radius-lg);
    padding: var(--dc-space-xl);
    width: 100%;
    max-width: 400px;
}

/* --- 15. Utilities --- */
.text-muted { color: var(--dc-text-muted); }
.text-sm { font-size: 0.8rem; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-mono { font-family: var(--dc-font-mono); }
.mt-sm { margin-top: var(--dc-space-sm); }
.mt-md { margin-top: var(--dc-space-md); }
.mt-lg { margin-top: var(--dc-space-lg); }
.mb-sm { margin-bottom: var(--dc-space-sm); }
.mb-md { margin-bottom: var(--dc-space-md); }
.mb-lg { margin-bottom: var(--dc-space-lg); }

/* --- 16. Responsive --- */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .content { margin-left: 0; padding: var(--dc-space-md); }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .topbar { flex-direction: column; align-items: flex-start; gap: var(--dc-space-sm); }
}

/* --- 17. Whitelabel Override Hook --- */
/* Tenant branding overrides these via inline <style> tag:
   :root {
     --dc-brand: #ff6600;
     --dc-brand-dark: #cc5200;
     --dc-brand-light: #fff3e6;
   }
*/