:root {
    --primary: #FF4757;
    --primary-hover: #ff6b81;
    --secondary: #2f3542;
    --sidebar-bg: #1e272e;
    --bg-color: #f1f2f6;
    --card-bg: #ffffff;
    --text-dark: #2d3436;
    --text-light: #f5f6fa;
    --text-muted: #7f8fa6;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 20px rgba(0,0,0,0.08);
    --radius-md: 12px;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    margin: 0;
    color: var(--text-dark);
}

.dashboard-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--sidebar-bg);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
}

.sidebar-brand {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    padding: 25px 20px;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
    flex-grow: 1;
}

.nav-links li {
    margin-bottom: 5px;
}

.nav-btn {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--text-light);
    padding: 15px 20px;
    text-align: left;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.2s;
    border-left: 4px solid transparent;
}

.nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
    background-color: rgba(255, 71, 87, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-footer {
    padding: 20px;
}

.btn-logout {
    width: 100%;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--text-muted);
    padding: 10px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-logout:hover {
    color: white;
    border-color: white;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    padding: 30px;
    max-width: 1200px;
    overflow-y: auto;
}

.content-header {
    margin-bottom: 30px;
}

.content-header h1 {
    font-family: 'Outfit', sans-serif;
    margin: 0;
    font-size: 2rem;
}

/* Tabs */
.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.stat-title {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
}

/* Forms */
.admin-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.admin-card h2 {
    margin-top: 0;
    font-family: 'Outfit', sans-serif;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

input[type="text"], input[type="number"], select, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-sizing: border-box;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    width: 100%;
}

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

/* Grid Lists (Drivers) */
.grid-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.driver-card {
    background: white;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--secondary);
    box-shadow: var(--shadow-sm);
}

/* Ratings List */
.ratings-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.rating-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.stars {
    color: #f1c40f;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 40px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}