/* ==========================================================================
   126~128 · 在线运行代码 · 共享工作台骨架
   每个语言有独立 skin：run-go.css / run-php.css / run-python.css
   通过 .rc-page[data-rc] 覆盖 --rc-accent 等变量与首屏构图
   ========================================================================== */

:root {
    --rc-bg: transparent;
    --rc-panel: #ffffff;
    --rc-panel-2: #f3f4f9;
    --rc-ink: #1b2030;
    --rc-ink-2: #454b5e;
    --rc-muted: #868b9d;
    --rc-line: #e4e6ef;
    --rc-line-2: #d4d7e4;
    --rc-accent: #5b67d8;
    --rc-accent-2: #444fc0;
    --rc-accent-soft: #ecedfb;
    --rc-ok: #1d9e6f;
    --rc-bad: #cc4433;
    --rc-bad-soft: #fbeae7;
    --rc-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
    --rc-shadow: 0 1px 2px rgba(20, 24, 40, .04), 0 18px 40px -32px rgba(20, 24, 40, .45);
}

:root[data-theme="dark"] {
    --rc-panel: #1a1c26;
    --rc-panel-2: #212430;
    --rc-ink: #e9e8f2;
    --rc-ink-2: #b2b4c6;
    --rc-muted: #7d8095;
    --rc-line: #272a38;
    --rc-line-2: #34384a;
    --rc-accent-soft: #232741;
    --rc-ok: #4cc79a;
    --rc-bad: #e57a68;
    --rc-bad-soft: #2a1713;
    --rc-shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 20px 44px -34px rgba(0, 0, 0, .9);
}

/* 未手动指定主题时跟随系统 */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --rc-panel: #1a1c26;
        --rc-panel-2: #212430;
        --rc-ink: #e9e8f2;
        --rc-ink-2: #b2b4c6;
        --rc-muted: #7d8095;
        --rc-line: #272a38;
        --rc-line-2: #34384a;
        --rc-accent-soft: #232741;
        --rc-ok: #4cc79a;
        --rc-bad: #e57a68;
        --rc-bad-soft: #2a1713;
        --rc-shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 20px 44px -34px rgba(0, 0, 0, .9);
    }
}

.rc-page {
    padding: 16px 0 46px;
}

.rc-wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------------- 首屏 ---------------- */
.rc-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 26px;
    align-items: center;
    margin-bottom: 16px;
}

.rc-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--rc-mono);
    font-size: 9.5px;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--rc-accent);
}
.rc-eyebrow::after {
    content: "";
    width: 34px;
    height: 1px;
    background: currentColor;
    opacity: .6;
}

.rc-h1 {
    margin: 8px 0 10px;
    font-size: clamp(25px, 3.1vw, 36px);
    line-height: 1.22;
    font-weight: 800;
    letter-spacing: -.025em;
    color: var(--rc-ink);
}
.rc-h1 em {
    font-style: normal;
    color: var(--rc-accent);
    position: relative;
    display: inline-block;
}
.rc-h1 em::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 7px;
    background: var(--rc-accent-soft);
    z-index: -1;
    border-radius: 2px;
}

.rc-sub {
    margin: 0;
    max-width: 56ch;
    font-size: 14.6px;
    line-height: 1.85;
    color: var(--rc-ink-2);
}
.rc-sub b { color: var(--rc-ink); font-weight: 650; }

.rc-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 13px;
}
.rc-chips span {
    font-family: var(--rc-mono);
    font-size: 10px;
    letter-spacing: .06em;
    padding: 4px 9px;
    border: 1px solid var(--rc-line-2);
    border-radius: 999px;
    color: var(--rc-ink-2);
    background: var(--rc-panel);
}
.rc-chips span::before {
    content: "";
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--rc-accent);
    margin-right: 6px;
    vertical-align: 1px;
}

/* 执行工具条（位于工作台上方） */
.rc-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
    padding: 10px 14px;
    border: 1px solid var(--rc-line);
    border-radius: 10px;
    background: var(--rc-panel);
    box-shadow: var(--rc-shadow);
}
.rc-toolbar .rc-tb-label {
    font-family: var(--rc-mono);
    font-size: 9.5px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--rc-muted);
}
.rc-toolbar #codeSelect {
    width: 170px;
    margin: 0;
}
.rc-toolbar #run {
    width: auto;
    margin: 0;
    padding: 10px 24px;
}
.rc-toolbar .rc-run-state {
    margin: 0 0 0 auto;
    text-align: right;
}

/* ---------------- 工作台 ---------------- */
.rc-desk {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 296px;
    gap: 14px;
    align-items: stretch;
}

.rc-card {
    border: 1px solid var(--rc-line);
    border-radius: 10px;
    background: var(--rc-panel);
    box-shadow: var(--rc-shadow);
    overflow: hidden;
}

.rc-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 13px;
    border-bottom: 1px solid var(--rc-line);
    background: var(--rc-panel-2);
}
.rc-card-head h2 {
    margin: 0;
    font-family: var(--rc-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--rc-ink);
}

/* 编辑器卡 */
.rc-filetab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: var(--rc-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--rc-accent);
    padding: 3px 10px;
    border-radius: 5px;
    background: var(--rc-accent-soft);
}
.rc-filetab::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 2px;
    background: var(--rc-accent);
}

.rc-ed-actions {
    margin-left: auto;
    display: flex;
    gap: 5px;
    position: relative;
}
.rc-mini {
    appearance: none;
    font: inherit;
    font-family: var(--rc-mono);
    font-size: 10.5px;
    padding: 4px 9px;
    border-radius: 5px;
    border: 1px solid var(--rc-line-2);
    background: transparent;
    color: var(--rc-ink-2);
    cursor: pointer;
    transition: all .15s;
    white-space: nowrap;
}
.rc-mini:hover { border-color: var(--rc-accent); color: var(--rc-accent); }

.rc-menu-list {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 30;
    min-width: 240px;
    padding: 5px;
    border: 1px solid var(--rc-line);
    border-radius: 9px;
    background: var(--rc-panel);
    box-shadow: 0 14px 34px -14px rgba(15, 18, 34, .4);
}
.rc-menu-list button {
    appearance: none;
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    text-align: left;
    font: inherit;
    font-size: 12px;
    color: var(--rc-ink-2);
    padding: 7px 9px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
}
.rc-menu-list button:hover { background: var(--rc-accent-soft); color: var(--rc-accent); }
.rc-menu-list button i {
    font-style: normal;
    font-family: var(--rc-mono);
    font-size: 9px;
    color: var(--rc-muted);
    margin-left: auto;
}

#code {
    height: 440px;
    width: 100%;
    font-size: 14px;
}

.rc-ed-foot {
    display: flex;
    justify-content: space-between;
    padding: 7px 13px;
    border-top: 1px solid var(--rc-line);
    background: var(--rc-panel-2);
    font-family: var(--rc-mono);
    font-size: 9.5px;
    color: var(--rc-muted);
}
.rc-ed-foot kbd {
    font-family: inherit;
    padding: 1px 5px;
    border: 1px solid var(--rc-line-2);
    border-bottom-width: 2px;
    border-radius: 4px;
    background: var(--rc-panel);
    color: var(--rc-ink-2);
}

/* 运行列（输出卡独占，撑满编辑器高度） */
.rc-run-col {
    display: flex;
    flex-direction: column;
}
.rc-run-col .rc-card {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.rc-run-col .rc-out {
    flex: 1;
    min-height: 440px;
    max-height: none;
}

#codeSelect {
    width: 100%;
    box-sizing: border-box;
    appearance: none;
    border: 1px solid var(--rc-line-2);
    border-radius: 7px;
    background: var(--rc-panel-2);
    color: var(--rc-ink);
    font-family: var(--rc-mono);
    font-size: 12.5px;
    font-weight: 600;
    padding: 8px 26px 8px 10px;
    cursor: pointer;
    outline: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--rc-muted) 50%), linear-gradient(135deg, var(--rc-muted) 50%, transparent 50%);
    background-position: calc(100% - 15px) 55%, calc(100% - 10px) 55%;
    background-size: 5px 5px;
    background-repeat: no-repeat;
    transition: border-color .15s;
}
#codeSelect:focus { border-color: var(--rc-accent); }

#run {
    appearance: none;
    width: 100%;
    margin-top: 11px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font: inherit;
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: .04em;
    color: #fff;
    padding: 10px 0;
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--rc-accent), var(--rc-accent-2));
    box-shadow: 0 6px 16px -8px var(--rc-accent);
    transition: transform .15s, box-shadow .15s, filter .15s;
}
#run:hover { transform: translateY(-1px); filter: brightness(1.06); }
#run:active { transform: translateY(0); }
#run.loading { pointer-events: none; opacity: .72; }
#run.loading svg { animation: rc-spin .9s linear infinite; }

@keyframes rc-spin {
    to { transform: rotate(360deg); }
}

.rc-run-state {
    margin: 9px 0 0;
    font-family: var(--rc-mono);
    font-size: 10.5px;
    line-height: 1.6;
    color: var(--rc-muted);
    min-height: 15px;
}
.rc-run-state.is-ok { color: var(--rc-ok); }
.rc-run-state.is-bad { color: var(--rc-bad); }

/* 输出卡 */
.rc-out-head .rc-mini { margin-left: auto; }

.rc-out-foot {
    display: flex;
    justify-content: space-between;
    padding: 7px 13px;
    border-top: 1px solid var(--rc-line);
    background: var(--rc-panel-2);
    font-family: var(--rc-mono);
    font-size: 9.5px;
    color: var(--rc-muted);
}

.rc-out {
    margin: 0;
    min-height: 236px;
    max-height: 420px;
    overflow: auto;
    padding: 13px 14px;
    background: #16181f;
    color: #d6d9e0;
    font-family: var(--rc-mono);
    font-size: 12.5px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}
.rc-out.is-ok { border-top: 2px solid var(--rc-ok); }
.rc-out.is-bad { border-top: 2px solid var(--rc-bad); }
.rc-out::-webkit-scrollbar { width: 9px; }
.rc-out::-webkit-scrollbar-thumb { background: #3a3f52; border-radius: 5px; }

:root[data-theme="dark"] .rc-out { background: #101219; }

/* 历史 */
.rc-his-list {
    list-style: none;
    margin: 0;
    padding: 4px 0;
}
.rc-his-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 13px;
    border-bottom: 1px dashed var(--rc-line);
    cursor: pointer;
    transition: background .15s;
}
.rc-his-list li:last-child { border-bottom: 0; }
.rc-his-list li:hover { background: var(--rc-accent-soft); }
.rc-his-list .rc-his-dot {
    flex: 0 0 auto;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--rc-accent);
}
.rc-his-list .rc-his-dot.is-bad { background: var(--rc-bad); }
.rc-his-list .rc-his-code {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: var(--rc-mono);
    font-size: 11.5px;
    color: var(--rc-ink-2);
}
.rc-his-list .rc-his-meta {
    margin-left: auto;
    flex: 0 0 auto;
    font-family: var(--rc-mono);
    font-size: 9.5px;
    color: var(--rc-muted);
}

/* 说明 */
.rc-docs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 13px;
    margin-top: 22px;
}
.rc-doc {
    padding: 16px 18px;
    border: 1px solid var(--rc-line);
    border-radius: 10px;
    background: var(--rc-panel);
    box-shadow: var(--rc-shadow);
}
.rc-doc h2 {
    margin: 0 0 9px;
    font-size: 14.5px;
    font-weight: 750;
    color: var(--rc-ink);
    padding-left: 10px;
    border-left: 3px solid var(--rc-accent);
}
.rc-doc p, .rc-doc li {
    font-size: 13px;
    line-height: 1.92;
    color: var(--rc-ink-2);
}
.rc-doc p { margin: 0 0 8px; }
.rc-doc p:last-child { margin-bottom: 0; }
.rc-doc ul { margin: 0; padding-left: 17px; }
.rc-doc li + li { margin-top: 4px; }
.rc-doc b { color: var(--rc-ink); }
.rc-doc code {
    font-family: var(--rc-mono);
    font-size: 11.6px;
    padding: 1px 5px;
    border-radius: 4px;
    background: var(--rc-accent-soft);
    color: var(--rc-accent);
}

/* ---------------- 站内详情块（面包屑 / 简介 / 页签 / 相关推荐）适配 ---------------- */
.rc-page .detail-title-row h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -.02em;
    line-height: 1.2;
    margin: 0;
}
.rc-page .calc-info { margin-top: 34px; }
.rc-page .detail-tabs { margin-top: 30px; }
.rc-page .related { margin-top: 30px; }
.rc-page .detail-breadcrumb { margin-bottom: 18px; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 960px) {
    .rc-desk { grid-template-columns: minmax(0, 1fr); }
    .rc-hero { grid-template-columns: minmax(0, 1fr); gap: 14px; }
    .rc-hero-side { display: none; }
}

@media (max-width: 620px) {
    .rc-wrap { padding: 0 14px; }
    .rc-h1 { font-size: 23px; }
    #code { height: 340px; }
    .rc-docs { grid-template-columns: minmax(0, 1fr); }
    .rc-ed-actions .rc-mini { padding: 4px 7px; }
}