/* ===== 考試倒數計時 ===== */

.exam-countdown {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin: 2.5rem auto;
    max-width: 1100px;
    padding: 0 1rem;
}

.countdown-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 16px;
    padding: 1.5rem 1.25rem;
    color: #fff;
    text-align: center;
    box-shadow: var(--shadow-soft);
}

.countdown-card__label {
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    opacity: 0.95;
    margin-bottom: 0.15rem;
}

.countdown-card__date {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-bottom: 0.9rem;
}

.countdown-card__units {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.countdown-unit {
    background: rgba(255, 255, 255, 0.18);
    border-radius: 10px;
    padding: 0.5rem 0.15rem;
    min-width: 62px;
}

.countdown-unit__num {
    display: block;
    font-size: 1.7rem;
    font-weight: 800;
    line-height: 1.1;
    font-variant-numeric: tabular-nums; /* 數字跳動時寬度不會晃 */
}

.countdown-unit__cap {
    display: block;
    font-size: 0.72rem;
    opacity: 0.9;
    margin-top: 0.15rem;
}

/* 考試當天 */
.countdown-card--today .countdown-card__units {
    font-size: 1.15rem;
    font-weight: 800;
    padding: 0.6rem 0;
}

@media (max-width: 480px) {
    .exam-countdown { gap: 0.9rem; margin: 1.75rem auto; }
    .countdown-card { padding: 1.15rem 0.9rem; }
    .countdown-unit { min-width: 54px; }
    .countdown-unit__num { font-size: 1.45rem; }
}