:root {
    --primary: #6366f1;
    --secondary: #8b5cf6;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f1f5f9;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--darker);
    color: var(--light);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

nav {
    background: var(--dark);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

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

.btn {
    padding: 0.75rem 2rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255,255,255,0.7);
}

form {
    max-width: 400px;
    margin: 2rem auto;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    background: rgba(255,255,255,0.05);
    color: var(--light);
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--primary);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

th {
    background: var(--dark);
    font-weight: 600;
}

#messages {
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem;
    background: var(--dark);
    border-radius: 8px;
    margin-bottom: 1rem;
}

#messages div {
    margin-bottom: 0.5rem;
    padding: 0.5rem;
}

.card {
    background: var(--dark);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: var(--dark);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.1);
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary);
}

.stat-label {
    color: rgba(255,255,255,0.6);
    margin-top: 0.5rem;
}