/* ======================================================================
 *  考试倒计时 /tool/exam-countdown
 * ====================================================================== */

/* ---------- 卡片 ---------- */
.exam-card {
    padding: 22px;
    margin-bottom: 16px;
    background: var(--c-bg-card);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}
.exam-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.exam-card-title { font-size: 15.5px; font-weight: 800; letter-spacing: -0.01em; }
.exam-card-head .exam-card-title { margin-bottom: 0; }

.exam-clear {
    flex: 0 0 auto;
    padding: 6px 14px;
    font-family: inherit;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--c-text-sub);
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
    border-radius: 99px;
    cursor: pointer;
    transition: all 0.16s ease;
}
.exam-clear:hover { color: #d32f2f; border-color: #d32f2f; }

/* ---------- 添加表单 ---------- */
.exam-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.exam-field { display: flex; flex-direction: column; gap: 6px; }
.exam-field-name { flex: 1 1 220px; min-width: 0; }
.exam-field-label { font-size: 12px; font-weight: 700; color: var(--c-text-muted); }
.exam-field input {
    height: 46px;
    padding: 0 14px;
    font-family: inherit;
    font-size: 14.5px;
    font-weight: 700;
    color: var(--c-text);
    background: var(--c-surface-soft);
    border: 1.5px solid var(--c-border);
    border-radius: 11px;
    outline: none;
    transition: all 0.16s ease;
}
.exam-field input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 4px var(--c-primary-soft); }
.exam-field input::placeholder { font-weight: 500; color: var(--c-text-muted); }
.exam-add { height: 46px; padding: 0 22px; flex: 0 0 auto; }

.exam-note { margin-top: 13px; font-size: 12.5px; line-height: 1.75; color: var(--c-text-muted); }
.exam-note b { color: var(--c-primary); }

/* ---------- 预设区 ---------- */
.exam-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.exam-preset {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 8px 14px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 700;
    color: var(--c-text);
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
    border-radius: 11px;
    cursor: pointer;
    transition: all 0.16s ease;
}
.exam-preset small { font-size: 11px; font-weight: 600; color: var(--c-text-muted); }
.exam-preset:hover { border-color: var(--c-primary); background: var(--c-primary-soft); }
.exam-preset:hover small { color: var(--c-primary); }

/* ---------- 列表 ---------- */
.exam-stat { font-size: 12.5px; color: var(--c-text-muted); margin-bottom: 13px; }
.exam-stat b { color: var(--c-primary); }
.exam-list { display: flex; flex-direction: column; gap: 12px; }
.exam-empty {
    padding: 34px 20px;
    text-align: center;
    font-size: 13.5px;
    color: var(--c-text-muted);
    background: var(--c-surface-soft);
    border: 1px dashed var(--c-border);
    border-radius: 12px;
}

.exam-item {
    position: relative;
    padding: 18px 20px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(91, 124, 250, 0.09), rgba(122, 92, 214, 0.06));
    border: 1px solid rgba(91, 124, 250, 0.22);
}
.exam-item.is-over { background: var(--c-surface-soft); border-color: var(--c-border); filter: saturate(0.4); }

.exam-item-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.exam-name { font-size: 16px; font-weight: 800; color: var(--c-text); }
.exam-date { font-size: 12px; font-weight: 600; color: var(--c-text-muted); }
.exam-del {
    margin-left: auto;
    width: 26px;
    height: 26px;
    line-height: 1;
    font-size: 13px;
    color: var(--c-text-muted);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.16s ease;
}
.exam-del:hover { color: #d32f2f; border-color: #d32f2f; background: rgba(211, 47, 47, 0.06); }

.exam-cd { display: flex; align-items: flex-end; flex-wrap: wrap; gap: 16px; }
.exam-cd-main { display: flex; align-items: baseline; gap: 4px; }
.exam-cd-main b { font-size: 44px; font-weight: 800; line-height: 1; letter-spacing: -0.02em; color: var(--c-primary); font-variant-numeric: tabular-nums; }
.exam-cd-main span { font-size: 14px; font-weight: 700; color: var(--c-text-sub); }
.exam-cd-sub { display: flex; gap: 12px; padding-bottom: 4px; }
.exam-cd-sub .u { font-size: 12.5px; font-weight: 600; color: var(--c-text-muted); }
.exam-cd-sub .u b { font-size: 19px; font-weight: 800; color: var(--c-text); font-variant-numeric: tabular-nums; }

.exam-over-text { font-size: 14px; font-weight: 700; color: var(--c-text-muted); }
.exam-over-text b { color: var(--c-text-sub); font-size: 18px; }
.exam-extra { margin-top: 11px; font-size: 12.5px; color: var(--c-text-muted); }
.exam-extra b { color: var(--c-text-sub); }

/* ---------- 免责与简介 ---------- */
.exam-disclaim {
    font-size: 12px;
    line-height: 1.85;
    color: var(--c-text-muted);
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 26px;
}
.exam-disclaim b { color: var(--c-text-sub); }
.exam-info-block { margin-bottom: 26px; }

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
    .exam-card { padding: 18px; }
    .exam-field-name { flex: 1 1 100%; }
    .exam-field { flex: 1 1 calc(50% - 6px); }
    .exam-add { flex: 1 1 100%; }
    .exam-cd-main b { font-size: 36px; }
    .exam-cd-sub .u b { font-size: 17px; }
}

/* ============ 黑夜模式 ============ */
[data-theme="dark"] .exam-field input,
[data-theme="dark"] .exam-preset,
[data-theme="dark"] .exam-clear,
[data-theme="dark"] .exam-empty,
[data-theme="dark"] .exam-disclaim { background: rgba(255, 255, 255, 0.04); }
[data-theme="dark"] .exam-item {
    background: linear-gradient(135deg, rgba(91, 124, 250, 0.16), rgba(122, 92, 214, 0.1));
    border-color: rgba(91, 124, 250, 0.3);
}
[data-theme="dark"] .exam-item.is-over { background: rgba(255, 255, 255, 0.04); }
[data-theme="dark"] .exam-cd-main b { color: #8fa9ff; }