/* ====== 日历网格 ====== */
.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 14px;
}

/* 表头 */
.week {
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: #555;
}

/* 卡片基础 */
.card {
    min-height: 120px;
    border-radius: 12px;
    padding: 12px;
    box-sizing: border-box;
    background: transparent;
}

/* 状态样式 */
.card.past {
    background: #e5e5e5;
    color: #666;
}

.card.today {
    background: #3b82f6;
    color: #fff;
}

.card.future {
    background: #ffffff;
    color: #333;
    border: 1px solid #ddd;
}

/* 内容 */
.date {
    font-weight: 700;
    margin-bottom: 8px;
}

.line {
    font-size: 16px;
    margin-top: 6px;
}