:root {
    --bg-base: #090d16;
    --bg-gradient: radial-gradient(circle at 50% -20%, #1e293b 0%, #090d16 70%);
    --card: rgba(30, 41, 59, 0.75);
    --card-border: rgba(255, 255, 255, 0.08);
    --text: #f8fafc;
    --muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --danger: #ef4444;
    --success: #22c55e;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-base);
    background-image: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--text);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container { 
    width: 100%; 
    max-width: 950px; 
    padding: 20px; 
    box-sizing: border-box; 
}

.card {
    background-color: var(--card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
}

h2, h3 { 
    margin-top: 0; 
    color: var(--text); 
    letter-spacing: -0.025em;
}

input, select, button {
    width: 100%;
    padding: 12px 16px;
    margin-top: 6px;
    margin-bottom: 16px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background-color: rgba(15, 23, 42, 0.6);
    color: var(--text);
    box-sizing: border-box;
    font-size: 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

button {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

button:hover { 
    opacity: 0.9; 
    transform: translateY(-1px);
}

.btn-danger { 
    background: linear-gradient(135deg, #ef4444, #dc2626); 
}

.btn-success { 
    background: linear-gradient(135deg, #22c55e, #16a34a); 
}

table { 
    width: 100%; 
    border-collapse: collapse; 
    margin-top: 15px; 
}

th, td { 
    border-bottom: 1px solid var(--card-border); 
    padding: 12px 10px; 
    text-align: left; 
    font-size: 14px; 
}

th { 
    background-color: rgba(255, 255, 255, 0.02); 
    color: var(--muted);
    font-weight: 600;
}

.nav { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 25px; 
}

a { 
    color: var(--accent); 
    text-decoration: none; 
    transition: color 0.2s;
}

a:hover { 
    color: #60a5fa;
    text-decoration: underline; 
}

.badge { 
    padding: 4px 10px; 
    border-radius: 6px; 
    font-size: 11px; 
    font-weight: 600; 
}

.badge-success { 
    background: rgba(34, 197, 94, 0.15); 
    color: var(--success); 
    border: 1px solid rgba(34, 197, 94, 0.2);
}