:root {
    --primary: #2563eb;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 20px;
}

.container { max-width: 1100px; margin: auto; }

header { text-align: center; margin-bottom: 40px; }

.grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 30px;
}

.card {
    background: var(--card);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.input-group { margin-bottom: 15px; }

label { display: block; font-weight: 600; margin-bottom: 5px; font-size: 0.9rem; }

input, select {
    width: 100%;
    padding: 10px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    box-sizing: border-box;
}

.row { display: flex; gap: 10px; }

.btn-primary {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.btn-primary:hover { background: #1d4ed8; }

table { width: 100%; border-collapse: collapse; margin-top: 10px; }

th { text-align: left; font-size: 0.8rem; color: #64748b; padding-bottom: 10px; }

td { padding: 12px 0; border-top: 1px solid #f1f5f9; font-size: 0.9rem; }

.delete-btn { color: #ef4444; cursor: pointer; border: none; background: none; }

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