:root {
    /* Tighter color palette */
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-hover: #334155;
    --border-color: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.5;
    font-size: 14px; /* Smaller base font */
}

/* Tighter container with max-width for mobile */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px; /* Reduced from 20px */
}

/* Compact navigation */
nav {
    background: var(--surface);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0; /* Reduced from 16px */
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 12px;
    position: relative; /* Required for absolute positioned nav-links */
}

.nav-brand h1 {
    font-size: 18px; /* Reduced from 24px */
    font-weight: 600;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 8px; /* Reduced from 16px */
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 6px 12px; /* Reduced */
    border-radius: 6px;
    font-size: 13px; /* Smaller */
    transition: all 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    background: var(--surface-hover);
    color: var(--text-primary);
}

/* Mobile menu toggle - ALWAYS visible now */
.nav-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle:hover {
    background: var(--surface-hover);
    border-radius: 6px;
}

/* Navigation links hidden by default, shown when active */
.nav-links {
    display: none;
    position: fixed;
    top: 60px;  /* Below the nav bar */
    right: 12px;
    background: var(--surface);
    flex-direction: column;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    min-width: 180px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    z-index: 1000;
}

.nav-links.active {
    display: flex;
}

.nav-links a {
    padding: 10px 12px;
    border-radius: 6px;
}

/* Desktop - hamburger stays! */
@media (min-width: 769px) {
    .nav-links {
        right: 12px;
        min-width: 200px;
    }
}

/* Compact page header */
.page-header {
    margin-bottom: 16px; /* Reduced from 24px */
}

.page-header h1 {
    font-size: 20px; /* Reduced from 28px */
    font-weight: 600;
    margin-bottom: 4px;
}

.page-header p {
    color: var(--text-muted);
    font-size: 13px;
}

/* Tighter card design */
.card {
    background: var(--surface);
    border-radius: 8px; /* Reduced from 12px */
    padding: 12px; /* Reduced from 24px */
    box-shadow: var(--shadow);
    margin-bottom: 12px; /* Reduced from 24px */
}

.card h2 {
    font-size: 16px; /* Reduced from 20px */
    font-weight: 600;
    margin-bottom: 8px;
}

.card h3 {
    font-size: 15px; /* Reduced from 18px */
    font-weight: 600;
    margin-bottom: 8px;
}

.card p {
    font-size: 13px;
}

/* Compact stat cards */
.stat-card {
    background: var(--surface);
    padding: 12px; /* Reduced from 20px */
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 11px; /* Much smaller */
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px; /* Reduced from 32px */
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.stat-card small {
    font-size: 11px;
    color: var(--text-muted);
}

/* Compact grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); /* Smaller min */
    gap: 8px; /* Reduced from 16px */
    margin-bottom: 16px;
}

/* Compact buttons */
.btn {
    display: inline-block;
    padding: 8px 16px; /* Reduced from 12px 24px */
    border-radius: 6px;
    font-size: 13px; /* Reduced from 14px */
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* Compact forms */
.form-group {
    margin-bottom: 12px; /* Reduced from 16px */
}

.form-group label {
    display: block;
    margin-bottom: 4px; /* Reduced from 8px */
    font-weight: 500;
    font-size: 13px;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px; /* Reduced from 12px */
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background);
    color: var(--text-primary);
    font-size: 13px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-group small {
    display: block;
    margin-top: 4px;
    font-size: 11px;
    color: var(--text-muted);
}

/* Compact table */
.table-container {
    overflow-x: auto;
    margin: 8px -12px; /* Negative margin to extend to card edges */
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px; /* Smaller text */
}

.data-table th {
    background: var(--background);
    color: var(--text-secondary);
    padding: 8px; /* Reduced from 12px */
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 10px 8px; /* Reduced from 12px */
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background: var(--surface-hover);
}

/* Compact badges */
.badge {
    display: inline-block;
    padding: 2px 8px; /* Smaller */
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-color);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

/* Compact alerts */
.alert {
    padding: 10px 12px; /* Reduced */
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 13px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
}

/* Flashes */
.flashes {
    list-style: none;
    margin-bottom: 16px;
}

.flashes li {
    padding: 10px 12px;
    border-radius: 6px;
    margin-bottom: 8px;
    font-size: 13px;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    body {
        font-size: 13px;
    }
    
    .container {
        padding: 8px;
    }
    
    .nav-links {
        right: 8px;
        left: auto;
        min-width: 160px;
    }
    
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 columns on mobile */
        gap: 6px;
    }
    
    .card {
        padding: 10px;
    }
    
    .stat-value {
        font-size: 20px;
    }
    
    .page-header h1 {
        font-size: 18px;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 6px 4px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr; /* Single column on small phones */
    }
    
    .stat-value {
        font-size: 18px;
    }
}

/* Utility classes */
.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }