* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    background: #f4f6f9;
}

/* HEADER */
.header {
    background: #111827;
    color: white;
    text-align: center;
    padding: 15px;
    font-size: 20px;
    font-weight: 600;
}

/* TIMER */
#timer {
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    background: black;
    color: #00ffcc;
    padding: 15px;
    letter-spacing: 3px;
}

/* LAYOUT */
.container {
    display: flex;
    gap: 20px;
    padding: 20px;
}

.left { flex: 3; }
.right { flex: 1; }

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

/* CASE BOX */
.case-box {
    background: #f9fafb;
    padding: 15px;
    border-radius: 8px;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 15px;
    font-size: 14px;
}

/* OPTIONS */
.option {
    padding: 12px 15px;
    margin: 10px 0;
    border: 2px solid #ccc;
    border-radius: 8px;
    cursor: pointer;
    background: #f9f9f9;
    transition: 0.3s;
}

.option:hover {
    background: #e6f0ff;
}

.option.selected {
    background: #2563eb;
    color: white;
    border-color: #1e40af;
}

/* BUTTONS */
.btn-area {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}

button {
    padding: 10px 15px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

.primary { background: #2563eb; color: white; }
.warning { background: #f59e0b; color: white; }
.success { background: #16a34a; color: white; }

/* GRID */
.q-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-top: 10px;
}

.q-grid button {
    padding: 8px;
    border-radius: 6px;
    border: none;
    background: #e5e7eb; /* default grey */
}

/* Red = Visited not answered */
.q-grid button.not-attempted {
    background: #ef4444;
    color: white;
}

/* Green = Answered */
.q-grid button.answered {
    background: #22c55e;
    color: white;
}

/* Yellow = Review */
.q-grid button.review {
    background: #facc15;
    color: black;
}

/* Blue border = Current */
.q-grid button.current {
    border: 2px solid #2563eb;
}

/* RESULT */
#resultArea {
    padding: 30px;
}

.reviewBox {
    background: white;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

/* Responsive */
@media (max-width: 900px) {
    .container {
        flex-direction: column;
    }
}