:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #8b5cf6;
    /* Violet */
    --primary-hover: #7c3aed;
    --secondary: #06b6d4;
    /* Cyan */
    --accent: #f43f5e;
    /* Rose */
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --radius: 12px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-image: radial-gradient(circle at top right, rgba(139, 92, 246, 0.15), transparent 40%),
        radial-gradient(circle at bottom left, rgba(6, 182, 212, 0.15), transparent 40%);
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
    padding: 0;
}

* {
    box-sizing: border-box;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: rgba(139, 92, 246, 0.1);
}

.btn-google {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    text-align: center;
}

/* Glassmorphism Card */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Header */
header {
    padding: 20px 0;
    border-bottom: var(--glass-border);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav ul {
    display: flex;
    gap: 20px;
}

nav a {
    color: var(--text-muted);
    font-weight: 500;
}

nav a:hover {
    color: var(--text-color);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 100px 0;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 12px;
    background: rgba(15, 23, 42, 0.5);
    border: var(--glass-border);
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

/* Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 30px;
    margin-top: 40px;
}

.sidebar {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    height: calc(100vh - 120px);
    position: sticky;
    top: 100px;
}

.sidebar a {
    display: block;
    padding: 12px;
    margin-bottom: 5px;
    border-radius: 8px;
    color: var(--text-muted);
}

.sidebar a:hover,
.sidebar a.active {
    background: rgba(139, 92, 246, 0.1);
    color: var(--primary);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th,
td {
    padding: 15px;
    text-align: left;
    border-bottom: var(--glass-border);
}

th {
    color: var(--text-muted);
    font-weight: 600;
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        height: auto;
        position: static;
        margin-bottom: 20px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }
}