/*!
 * 化学元素周期表 —— 工具样式
 * 与站点其它工具页保持一致的卡片风格，并完整适配黑夜模式。
 */

.pt-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 20px;
    align-items: start;
}

.pt-main { min-width: 0; }

/* ---------------- 顶部工具条 ---------------- */
.pt-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border: 1px solid var(--c-border, #eef1f6);
    border-radius: 16px;
    background: var(--c-bg-card, #fff);
    margin-bottom: 14px;
}

.pt-search {
    position: relative;
    flex: 1 1 210px;
    min-width: 180px;
}

.pt-search input {
    width: 100%;
    height: 38px;
    padding: 0 12px 0 34px;
    font-size: 14px;
    color: var(--c-text, #0f172a);
    border: 1px solid var(--c-border, #e2e8f0);
    border-radius: 10px;
    background: var(--c-surface-soft, #f7f9fc);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.pt-search input:focus {
    border-color: var(--c-primary, #0066ff);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, .12);
}

.pt-search .ico {
    position: absolute;
    left: 11px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    opacity: .6;
    pointer-events: none;
}

.pt-seg {
    display: inline-flex;
    padding: 3px;
    border-radius: 10px;
    background: var(--c-surface-soft, #f1f5f9);
    border: 1px solid var(--c-border, #e2e8f0);
}

.pt-seg button {
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--c-text-sub, #475569);
    background: transparent;
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    transition: all .15s;
}

.pt-seg button.is-active {
    color: #fff;
    background: var(--c-primary, #0066ff);
}

.pt-temp {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--c-text-sub, #475569);
}

.pt-temp input[type="range"] {
    width: 150px;
    accent-color: var(--c-primary, #0066ff);
}

.pt-temp b {
    min-width: 58px;
    font-variant-numeric: tabular-nums;
    color: var(--c-text, #0f172a);
}

.pt-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 38px;
    padding: 0 14px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: var(--c-primary, #0066ff);
    border: 0;
    border-radius: 10px;
    cursor: pointer;
    transition: opacity .15s, transform .15s;
}

.pt-btn:hover { opacity: .9; transform: translateY(-1px); }

.pt-btn--ghost {
    color: var(--c-text-sub, #475569);
    background: var(--c-surface-soft, #f1f5f9);
    border: 1px solid var(--c-border, #e2e8f0);
}

.pt-btn--sm { height: 30px; padding: 0 12px; font-size: 12px; }

/* ---------------- 图例 ---------------- */
.pt-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

.pt-legend-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 11px;
    font-size: 12px;
    font-weight: 600;
    color: var(--c-text-sub, #475569);
    background: var(--c-bg-card, #fff);
    border: 1px solid var(--c-border, #e2e8f0);
    border-radius: 999px;
    cursor: pointer;
    transition: all .15s;
}

.pt-legend-item[data-nohl] { cursor: default; }

.pt-legend-item i {
    width: 11px;
    height: 11px;
    border-radius: 3px;
    background: var(--c1, #888);
}

.pt-legend-item:hover { border-color: var(--c1, #888); }

.pt-legend-item.is-active {
    color: #fff;
    background: var(--c1, #888);
    border-color: var(--c1, #888);
}

.pt-legend-item.is-active i { background: rgba(255, 255, 255, .85); }

/* ---------------- 周期表 ---------------- */
.pt-table {
    padding: 14px 12px;
    border: 1px solid var(--c-border, #eef1f6);
    border-radius: 16px;
    background: var(--c-bg-card, #fff);
    overflow-x: auto;
}

.pt-row {
    display: grid;
    grid-template-columns: 20px repeat(18, minmax(42px, 1fr));
    gap: 3px;
    margin-bottom: 3px;
    min-width: 880px; /* 窄屏时整表横向滚动，不挤成一团 */
}

.pt-row--head { margin-bottom: 6px; }
.pt-row--gap { min-height: 10px; }

.pt-rowlabel {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--c-text-muted, #94a3b8);
}

.pt-rowlabel--f { font-size: 10px; writing-mode: horizontal-tb; }

.pt-colnum {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    color: var(--c-text-muted, #94a3b8);
    padding-bottom: 2px;
}

.pt-cell {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    padding: 3px 1px 4px;
    min-height: 46px;
    color: #fff;
    background: var(--c1, #888);
    border: 0;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    transition: transform .12s, box-shadow .12s, opacity .15s;
}

.pt-cell .pt-z {
    font-size: 8.5px;
    line-height: 1.1;
    opacity: .85;
    font-variant-numeric: tabular-nums;
}

.pt-cell .pt-sym {
    font-size: 16px;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -.02em;
}

.pt-cell .pt-cn {
    font-size: 10.5px;
    line-height: 1.2;
    opacity: .95;
}

.pt-cell .pt-mass {
    font-size: 7.5px;
    line-height: 1.1;
    opacity: .75;
    font-variant-numeric: tabular-nums;
}

.pt-cell:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, .22);
    z-index: 3;
}

.pt-cell.is-dim { opacity: .16; filter: grayscale(.7); }

.pt-cell.is-hit {
    box-shadow: 0 0 0 2px var(--c-primary, #0066ff), 0 6px 16px rgba(0, 0, 0, .18);
    z-index: 2;
}

.pt-cell.is-active {
    transform: translateY(-2px) scale(1.06);
    box-shadow: 0 0 0 3px var(--c-text, #0f172a), 0 10px 24px rgba(0, 0, 0, .3);
    z-index: 4;
}

.pt-blank { min-height: 46px; }

.pt-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    font-size: 9.5px;
    font-weight: 700;
    color: var(--c-text-muted, #94a3b8);
    border: 1px dashed var(--c-border, #dbe3ef);
    border-radius: 6px;
    background: var(--c-surface-soft, #f7f9fc);
}

.pt-tip {
    margin: 10px 2px 0;
    font-size: 12px;
    color: var(--c-text-muted, #94a3b8);
    line-height: 1.7;
}

/* ---------------- 详情面板 ---------------- */
.pt-detail {
    position: sticky;
    top: 78px;
    padding: 18px;
    border: 1px solid var(--c-border, #eef1f6);
    border-radius: 16px;
    background: var(--c-bg-card, #fff);
}

.pt-detail-empty {
    padding: 40px 10px;
    text-align: center;
    color: var(--c-text-muted, #94a3b8);
}

.pt-detail-empty .emoji { font-size: 40px; margin-bottom: 10px; }
.pt-detail-empty p { font-size: 13px; line-height: 1.7; }

.pt-detail-head {
    display: flex;
    gap: 14px;
    align-items: center;
    padding-bottom: 14px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--c-border, #eef1f6);
}

.pt-big {
    position: relative;
    flex: 0 0 auto;
    width: 72px;
    height: 72px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--c1, #888);
    color: #fff;
}

.pt-big-z {
    position: absolute;
    top: 4px;
    left: 6px;
    font-size: 10px;
    opacity: .85;
}

.pt-big b { font-size: 32px; font-weight: 800; line-height: 1; }

.pt-detail-title { min-width: 0; }

.pt-detail-title h3 {
    margin: 0 0 2px;
    font-size: 20px;
    font-weight: 800;
    color: var(--c-text, #0f172a);
}

.pt-detail-title h3 small {
    font-size: 13px;
    font-weight: 500;
    color: var(--c-text-muted, #94a3b8);
}

.pt-detail-title .pt-en {
    margin: 0 0 8px;
    font-size: 13px;
    color: var(--c-text-sub, #475569);
}

.pt-cat {
    display: inline-block;
    margin: 0 5px 4px 0;
    padding: 3px 10px;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--c1, #555);
    background: color-mix(in srgb, var(--c1, #888) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--c1, #888) 45%, transparent);
    border-radius: 999px;
}

.pt-cat--radio {
    color: #c92a2a;
    background: rgba(201, 42, 42, .1);
    border-color: rgba(201, 42, 42, .4);
}

.pt-props {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    margin-bottom: 14px;
    border-radius: 10px;
    overflow: hidden;
    background: var(--c-border, #eef1f6);
}

.pt-prop {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 11px;
    font-size: 12.5px;
    background: var(--c-bg-card, #fff);
}

.pt-prop .k { flex: 0 0 auto; color: var(--c-text-muted, #94a3b8); }
.pt-prop .v { text-align: right; font-weight: 600; color: var(--c-text, #0f172a); word-break: break-word; }

.pt-shell-title {
    margin-bottom: 8px;
    font-size: 12px;
    font-weight: 700;
    color: var(--c-text-muted, #94a3b8);
}

.pt-shell-list { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }

.pt-shell-row { display: flex; align-items: center; gap: 8px; font-size: 11px; }

.pt-shell-row .n {
    width: 12px;
    flex: 0 0 12px;
    font-weight: 700;
    color: var(--c-text-muted, #94a3b8);
}

.pt-shell-row .bar {
    height: 8px;
    border-radius: 999px;
    background: var(--c1, #888);
    opacity: .85;
}

.pt-shell-row .c {
    flex: 0 0 auto;
    font-variant-numeric: tabular-nums;
    color: var(--c-text-sub, #475569);
}

.pt-brief {
    margin: 0 0 14px;
    padding: 11px 13px;
    font-size: 13px;
    line-height: 1.75;
    color: var(--c-text-sub, #475569);
    background: var(--c-surface-soft, #f7f9fc);
    border-radius: 10px;
}

.pt-detail-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.pt-nav {
    margin-top: 10px;
    font-size: 11.5px;
    color: var(--c-text-muted, #94a3b8);
    text-align: center;
}

/* ---------------- 小测验 ---------------- */
.pt-quiz {
    margin-top: 16px;
    padding: 16px;
    border: 1px solid var(--c-border, #eef1f6);
    border-radius: 16px;
    background: var(--c-bg-card, #fff);
}

.pt-quiz-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 15px;
    font-weight: 800;
    color: var(--c-text, #0f172a);
}

.pt-quiz-head span { font-size: 12px; font-weight: 600; color: var(--c-text-muted, #94a3b8); }

.pt-quiz-q {
    margin-bottom: 12px;
    font-size: 15px;
    font-weight: 700;
    color: var(--c-text, #0f172a);
}

.pt-quiz-opts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
}

.pt-quiz-opt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 12px 8px;
    border: 1px solid var(--c-border, #e2e8f0);
    border-radius: 12px;
    background: var(--c-surface-soft, #f7f9fc);
    cursor: pointer;
    transition: all .15s;
}

.pt-quiz-opt:hover { border-color: var(--c-primary, #0066ff); transform: translateY(-1px); }
.pt-quiz-opt b { font-size: 17px; color: var(--c-text, #0f172a); }
.pt-quiz-opt small { font-size: 11px; color: var(--c-text-muted, #94a3b8); }
.pt-quiz-opt:disabled { cursor: default; }
.pt-quiz-opt.is-right { border-color: #2f9e44; background: rgba(47, 158, 68, .12); }
.pt-quiz-opt.is-right b { color: #2f9e44; }
.pt-quiz-opt.is-wrong { border-color: #c92a2a; background: rgba(201, 42, 42, .1); }
.pt-quiz-opt.is-wrong b { color: #c92a2a; }

.pt-quiz-fb {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
    padding: 11px 13px;
    font-size: 13.5px;
    border-radius: 10px;
}

.pt-quiz-fb.is-ok { color: #2b8a3e; background: rgba(47, 158, 68, .12); }
.pt-quiz-fb.is-bad { color: #c92a2a; background: rgba(201, 42, 42, .1); }

.pt-quiz-result { text-align: center; padding: 10px 0 4px; }
.pt-quiz-result b { display: block; font-size: 30px; color: var(--c-primary, #0066ff); }
.pt-quiz-result span { font-size: 13px; color: var(--c-text-sub, #475569); }
.pt-quiz-result p { margin: 8px 0 0; font-size: 13.5px; color: var(--c-text, #0f172a); }
.pt-quiz-actions { display: flex; gap: 10px; justify-content: center; margin-top: 12px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
    .pt-wrap { grid-template-columns: 1fr; }
    .pt-detail { position: static; }
}

@media (max-width: 640px) {
    .pt-toolbar { padding: 12px; }
    .pt-temp input[type="range"] { width: 110px; }
    .pt-detail { padding: 14px; }
}

/* ---------------- 黑夜模式 ---------------- */
[data-theme="dark"] .pt-toolbar,
[data-theme="dark"] .pt-table,
[data-theme="dark"] .pt-detail,
[data-theme="dark"] .pt-quiz {
    background: var(--c-bg-card, #131c31);
    border-color: rgba(255, 255, 255, .08);
}

[data-theme="dark"] .pt-search input {
    background: rgba(255, 255, 255, .04);
    border-color: rgba(255, 255, 255, .12);
    color: var(--c-text, #e5e7eb);
}

[data-theme="dark"] .pt-seg { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .1); }
[data-theme="dark"] .pt-seg button { color: var(--c-text-sub, #9ca3af); }
[data-theme="dark"] .pt-seg button.is-active { color: #fff; }

[data-theme="dark"] .pt-btn--ghost {
    color: var(--c-text-sub, #9ca3af);
    background: rgba(255, 255, 255, .04);
    border-color: rgba(255, 255, 255, .12);
}

[data-theme="dark"] .pt-legend-item {
    background: rgba(255, 255, 255, .04);
    border-color: rgba(255, 255, 255, .1);
    color: var(--c-text-sub, #9ca3af);
}

[data-theme="dark"] .pt-props { background: rgba(255, 255, 255, .07); }
[data-theme="dark"] .pt-prop { background: var(--c-bg-card, #131c31); }

[data-theme="dark"] .pt-placeholder {
    background: rgba(255, 255, 255, .03);
    border-color: rgba(255, 255, 255, .14);
}

[data-theme="dark"] .pt-cell.is-active {
    box-shadow: 0 0 0 3px #e5e7eb, 0 10px 24px rgba(0, 0, 0, .5);
}

[data-theme="dark"] .pt-brief,
[data-theme="dark"] .pt-quiz-opt {
    background: rgba(255, 255, 255, .04);
}

[data-theme="dark"] .pt-quiz-opt { border-color: rgba(255, 255, 255, .12); }