/* ===== 卡片容器 — 纯白 + 精致阴影 ===== */
.time-card {
    position: relative;
    width: 100%;
    max-width: 440px;
    background: #ffffff;
    border-radius: 36px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow:
            0 20px 60px rgba(0, 0, 0, 0.06),
            0 8px 24px rgba(0, 0, 0, 0.03);
    padding: 48px 28px 44px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.time-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.08), 0 10px 30px rgba(0, 0, 0, 0.04);
}

/* ===== 时间显示 ===== */
.time-clock {
    font-size: 72px;
    font-weight: 300;
    color: #1e1e2a;
    letter-spacing: 6px;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.02);
    margin-bottom: 12px;
}

.time-clock .time-seconds {
    font-size: 40px;
    font-weight: 300;
    color: #a0a0b0;
    letter-spacing: 0;
}

/* ===== 日期显示 ===== */
.time-date-display {
    font-size: 20px;
    color: #7a7a8a;
    font-weight: 400;
    letter-spacing: 1px;
    padding-top: 8px;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    display: inline-block;
    padding-left: 20px;
    padding-right: 20px;
}

/* ===== 可选的装饰分隔线 ===== */
.time-divider {
    width: 60px;
    height: 2px;
    background: rgba(0, 0, 0, 0.06);
    margin: 16px auto 18px;
    border-radius: 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 480px) {
    .time-card {
        padding: 36px 20px 32px;
        border-radius: 28px;
    }
    .time-clock {
        font-size: 56px;
        letter-spacing: 4px;
    }
    .time-clock .time-seconds {
        font-size: 32px;
    }
    .time-date-display {
        font-size: 17px;
        padding-left: 12px;
        padding-right: 12px;
    }
}

@media (max-width: 380px) {
    .time-card {
        padding: 28px 16px 24px;
    }
    .time-clock {
        font-size: 44px;
        letter-spacing: 2px;
    }
    .time-clock .time-seconds {
        font-size: 26px;
    }
    .time-date-display {
        font-size: 15px;
    }
}