/* ==========================================================================
   O 型圈沟槽与压缩率计算器
   主视觉：一张工程图纸（网格 + 剖面 + 尺寸线 + 图签），右侧参数栏，
   下方三只仪表盘分别显示压缩率 / 拉伸率 / 填充率。
   不套用其它工具页的卡片式结果区，图纸即结果。
   ========================================================================== */

.og-hero { padding-bottom: 34px; }

.og-work {
    display: grid;
    grid-template-columns: minmax(0, 1.34fr) minmax(330px, .66fr);
    gap: 18px;
    align-items: start;
    margin-top: 24px;
}

.og-left { display: grid; gap: 14px; min-width: 0; }

/* ---------- 图纸台 ---------- */
.og-stage {
    --og-board: #f1f5f9;
    --og-board-2: #dde6ef;
    --og-grid: rgba(30, 79, 122, .10);
    --og-metal: rgba(30, 79, 122, .07);
    --og-metal-line: #43647f;
    --og-dim: #6a839a;
    --og-rubber-a: #4b5d6e;
    --og-rubber-b: #232e39;
    position: relative;
    border: 1px solid var(--d3-line);
    border-radius: var(--d3-radius);
    background: var(--og-board);
    overflow: hidden;
}

:root[data-theme="dark"] .og-stage {
    --og-board: #0f151d;
    --og-board-2: #17202b;
    --og-grid: rgba(122, 168, 214, .11);
    --og-metal: rgba(122, 168, 214, .08);
    --og-metal-line: #6285a6;
    --og-dim: #7190aa;
    --og-rubber-a: #33424f;
    --og-rubber-b: #070b10;
    background: var(--og-board);
}

.og-stage-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 11px 16px;
    border-bottom: 1px solid var(--d3-line);
    background: color-mix(in srgb, var(--og-board-2) 88%, transparent);
}
.og-stage-head h2 { font-size: 13.5px; letter-spacing: -.01em; }
.og-stage-head span {
    margin-left: auto;
    font-family: var(--d3-mono);
    font-size: 10.5px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--og-dim);
}

.og-scroll { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
.og-scroll::-webkit-scrollbar { height: 6px; }
.og-scroll::-webkit-scrollbar-thumb { background: var(--d3-line-2); border-radius: 3px; }
#ogBoard { display: block; width: 100%; height: auto; }

.og-stage-foot {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
    padding: 9px 16px 11px;
    border-top: 1px dashed var(--d3-line);
    background: color-mix(in srgb, var(--og-board-2) 70%, transparent);
    font-size: 11.5px;
    color: var(--d3-ink-3);
}
.og-stage-foot span { display: inline-flex; align-items: baseline; gap: 6px; }
.og-stage-foot span::before {
    content: "";
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--og-metal-line);
    transform: translateY(-2px);
}
.og-stage-foot span.is-note { color: var(--og-dim); font-family: var(--d3-mono); font-size: 10.5px; }
.og-stage-foot span.is-note::before { display: none; }
.og-stage-foot b {
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: 12px;
    font-weight: 650;
    color: var(--d3-ink-2);
}

/* ---------- SVG 图元 ---------- */
.og-grid { stroke: var(--og-grid); stroke-width: 1; }
.og-metal { fill: var(--og-board-2); }
.og-hatch-line { stroke: var(--og-metal-line); stroke-width: .9; opacity: .42; }
.og-metal-edge { fill: none; stroke: var(--og-metal-line); stroke-width: 1.5; opacity: .95; }
.og-face { stroke: var(--og-metal-line); stroke-width: 2.1; opacity: 1; }
.og-rubber { fill: url(#ogRub); stroke: #101922; stroke-width: 1.2; }
.og-rub-a { stop-color: var(--og-rubber-a); }
.og-rub-b { stop-color: var(--og-rubber-b); }
.og-rubber.is-over { stroke: var(--d3-bad); stroke-width: 1.8; }
.og-ghost {
    fill: none;
    stroke: var(--d3-accent);
    stroke-width: 1.2;
    stroke-dasharray: 4 4;
    opacity: .62;
}
.og-note-bg { fill: var(--d3-card); opacity: .9; }

.og-dim { stroke: var(--og-dim); stroke-width: 1; }
.og-dim-thin { stroke: var(--og-dim); stroke-width: .8; stroke-dasharray: 3 3; opacity: .85; }
.og-arrow { fill: var(--og-dim); }
.og-dim-text {
    font-family: var(--d3-mono);
    font-size: 12px;
    fill: var(--d3-ink-2);
    font-weight: 650;
}
.og-note {
    font-family: var(--d3-mono);
    font-size: 10.5px;
    letter-spacing: .04em;
    fill: #4f6a85;
    paint-order: stroke;
    stroke: var(--og-board-2);
    stroke-width: 2.6;
    stroke-linejoin: round;
}
:root[data-theme="dark"] .og-note { fill: #7e9cb6; }
.og-centerline { stroke: var(--og-dim); stroke-width: .8; stroke-dasharray: 14 3 2 3; opacity: .45; }
.og-corner { stroke: var(--og-dim); stroke-width: 1; opacity: .55; fill: none; }
.og-table-box { fill: none; stroke: var(--og-dim); stroke-width: .8; opacity: .45; }
.og-sheet-text {
    font-family: var(--d3-mono);
    font-size: 8.5px;
    letter-spacing: .06em;
    fill: var(--og-dim);
}
.og-empty {
    font-family: var(--d3-mono);
    font-size: 12px;
    fill: var(--d3-ink-3);
}

/* ---------- 仪表盘 ---------- */
.og-gauges {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.og-gauge {
    position: relative;
    display: grid;
    gap: 2px;
    padding: 11px 14px 12px;
    background: var(--d3-card);
    border: 1px solid var(--d3-line);
    border-radius: var(--d3-radius-sm);
    min-width: 0;
}
.og-gauge::after {
    content: "";
    position: absolute;
    left: 14px; right: 14px; bottom: 0;
    height: 2px;
    border-radius: 2px 2px 0 0;
    background: var(--og-bar, transparent);
    opacity: .9;
}
.og-gauge svg { display: block; width: 100%; height: auto; }
.og-gauge-label {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-size: 11.5px;
    font-weight: 650;
    color: var(--d3-ink-3);
    letter-spacing: .02em;
}
.og-gauge-label i { font-style: normal; font-family: var(--d3-mono); font-size: 10px; opacity: .7; }
.og-gauge-value {
    display: flex;
    align-items: baseline;
    gap: 3px;
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: clamp(19px, 2.4vw, 24px);
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1.15;
    color: var(--d3-ink);
}
.og-gauge-value small { font-family: var(--d3-sans); font-size: 11px; font-weight: 600; color: var(--d3-ink-3); }
.og-gauge-target { font-size: 11px; color: var(--d3-ink-3); white-space: nowrap; }

.og-gauge.is-idle { --og-bar: var(--d3-line-2); }
.og-gauge.is-ok { --og-bar: var(--d3-ok); }
.og-gauge.is-warn { --og-bar: var(--d3-warn); }
.og-gauge.is-bad { --og-bar: var(--d3-bad); }
.og-gauge.is-ok .og-gauge-value { color: var(--d3-ink); }
.og-gauge.is-warn .og-gauge-value { color: var(--d3-warn); }
.og-gauge.is-bad .og-gauge-value { color: var(--d3-bad); }

.og-dial-track { fill: none; stroke: var(--d3-line-2); stroke-width: 5; stroke-linecap: round; opacity: .75; }
.og-dial-band { fill: none; stroke: var(--d3-ok); stroke-width: 5; stroke-linecap: butt; opacity: .35; }
.og-dial-tick { stroke: var(--d3-line-2); stroke-width: 1; }
.og-dial-needle { stroke: var(--d3-ink); stroke-width: 2.2; stroke-linecap: round; }
.og-dial-hub { fill: var(--d3-ink); }
.og-gauge.is-ok .og-dial-needle { stroke: var(--d3-ok); }
.og-gauge.is-ok .og-dial-hub { fill: var(--d3-ok); }
.og-gauge.is-warn .og-dial-needle { stroke: var(--d3-warn); }
.og-gauge.is-warn .og-dial-hub { fill: var(--d3-warn); }
.og-gauge.is-bad .og-dial-needle { stroke: var(--d3-bad); }
.og-gauge.is-bad .og-dial-hub { fill: var(--d3-bad); }

/* ---------- 判定条 ---------- */
.og-verdict {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-top: 14px;
    padding: 15px 18px;
    border: 1px solid var(--d3-line);
    border-left-width: 3px;
    border-radius: var(--d3-radius);
    background: var(--d3-card);
}
.og-verdict:empty { display: none; }
.og-verdict.is-ok { border-left-color: var(--d3-ok); }
.og-verdict.is-warn { border-left-color: var(--d3-warn); }
.og-verdict.is-bad { border-left-color: var(--d3-bad); }

.og-verdict-mark {
    flex: none;
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    border-radius: 50%;
    font-size: 16px;
    font-weight: 700;
    line-height: 1;
    background: var(--d3-paper-2);
    color: var(--d3-ink-2);
}
.og-verdict.is-ok .og-verdict-mark { background: rgba(29, 107, 79, .1); color: var(--d3-ok); }
.og-verdict.is-warn .og-verdict-mark { background: rgba(168, 84, 26, .1); color: var(--d3-warn); }
.og-verdict.is-bad .og-verdict-mark { background: rgba(176, 42, 36, .1); color: var(--d3-bad); }

.og-verdict-main { min-width: 0; }
.og-verdict-main b { display: block; font-size: 15px; letter-spacing: -.01em; }
.og-verdict-main p { margin-top: 3px; font-size: 13px; line-height: 1.7; color: var(--d3-ink-2); max-width: 58em; }

.og-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-left: auto;
    padding: 0;
    list-style: none;
    justify-content: flex-end;
}
.og-chips li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 9px;
    border-radius: 999px;
    border: 1px solid var(--d3-line);
    background: var(--d3-card-2);
    font-family: var(--d3-mono);
    font-size: 10.5px;
    color: var(--d3-ink-2);
    white-space: nowrap;
}
.og-chips li::before {
    content: "";
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--d3-ink-3);
}
.og-chips li.is-ok::before { background: var(--d3-ok); }
.og-chips li.is-warn::before { background: var(--d3-warn); }
.og-chips li.is-bad::before { background: var(--d3-bad); }
.og-chips li.is-ok { color: var(--d3-ok); border-color: rgba(29, 107, 79, .28); }
.og-chips li.is-warn { color: var(--d3-warn); border-color: rgba(168, 84, 26, .28); }
.og-chips li.is-bad { color: var(--d3-bad); border-color: rgba(176, 42, 36, .28); }

.og-alerts { display: grid; gap: 8px; margin-top: 12px; }
.og-alerts:empty { display: none; }
.og-alerts .d3-alert { font-size: 12.5px; padding: 9px 11px; }

/* ---------- 参数栏 ---------- */
.og-rail .d3-panel-body { padding: 16px 16px 18px; }
.og-rail .d3-group + .d3-group { margin-top: 16px; padding-top: 16px; }
.og-rail .d3-group-title { margin-bottom: 10px; }
.og-mt { margin-top: 10px; }

.og-seg {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}
.og-seg label {
    position: relative;
    display: block;
    cursor: pointer;
    padding: 9px 11px;
    border: 1px solid var(--d3-line-2);
    border-radius: var(--d3-radius-sm);
    background: var(--d3-paper);
    transition: border-color .15s ease, background .15s ease;
}
.og-seg input { position: absolute; opacity: 0; pointer-events: none; }
.og-seg b { display: block; font-size: 13px; font-weight: 700; color: var(--d3-ink-2); line-height: 1.4; }
.og-seg em { display: block; font-style: normal; font-size: 10.5px; color: var(--d3-ink-3); line-height: 1.5; }
.og-seg label:hover { border-color: var(--d3-accent); }
.og-seg label:has(input:checked) {
    border-color: var(--d3-accent);
    background: rgba(var(--d3-accent-rgb), .07);
    box-shadow: inset 0 0 0 1px rgba(var(--d3-accent-rgb), .35);
}
.og-seg label:has(input:checked) b { color: var(--d3-accent); }

.og-sublabel {
    margin-left: 6px;
    font-family: var(--d3-mono);
    font-size: 10px;
    font-weight: 500;
    color: var(--d3-ink-3);
    letter-spacing: .02em;
}

.og-rail .d3-io:has(select) { position: relative; }
.og-rail .d3-io:has(select)::after {
    content: "";
    position: absolute;
    right: 13px;
    top: 50%;
    width: 6px; height: 6px;
    border-right: 1.6px solid var(--d3-ink-3);
    border-bottom: 1.6px solid var(--d3-ink-3);
    transform: translateY(-70%) rotate(45deg);
    pointer-events: none;
}
.og-rail .d3-io:has(select) select { padding-right: 30px; }

.og-inline-btn {
    margin-top: 10px;
    appearance: none;
    cursor: pointer;
    font-family: var(--d3-mono);
    font-size: 11px;
    letter-spacing: .02em;
    padding: 6px 10px;
    border-radius: 5px;
    border: 1px dashed var(--d3-line-2);
    background: transparent;
    color: var(--d3-ink-2);
    transition: all .15s ease;
}
.og-inline-btn:hover { border-color: var(--d3-accent); color: var(--d3-accent); }

.og-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--d3-line);
}
.og-btn {
    appearance: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 12.5px;
    font-weight: 650;
    line-height: 1;
    padding: 10px 14px;
    border-radius: 7px;
    border: 1px solid var(--d3-accent);
    background: var(--d3-accent);
    color: var(--d3-accent-ink);
    transition: filter .15s ease, transform .1s ease;
}
.og-btn:hover { filter: brightness(1.08); }
.og-btn:active { transform: translateY(1px); }
.og-btn-ghost { background: transparent; color: var(--d3-ink-2); border-color: var(--d3-line-2); }
.og-btn-ghost:hover { color: var(--d3-ink); border-color: var(--d3-ink-3); filter: none; }

/* ---------- 参考槽表 ---------- */
.og-ref { margin-top: 14px; }
#ogRefTable { min-width: 620px; }
#ogRefTable td:first-child { font-family: var(--d3-mono); }
#ogRefTable tr.is-current td {
    background: rgba(var(--d3-accent-rgb), .07);
    font-weight: 700;
}
#ogRefTable tr.is-current td:first-child::after {
    content: " · 当前";
    font-size: 10px;
    font-weight: 600;
    color: var(--d3-accent);
}
.og-pick {
    appearance: none;
    cursor: pointer;
    font-family: var(--d3-mono);
    font-size: 11px;
    padding: 3px 9px;
    border-radius: 4px;
    border: 1px solid var(--d3-line-2);
    background: var(--d3-card);
    color: var(--d3-ink-2);
    transition: all .15s ease;
}
.og-pick:hover { border-color: var(--d3-accent); color: var(--d3-accent); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .og-work { grid-template-columns: minmax(0, 1fr); }
    .og-left { display: contents; }
    .og-stage { order: 1; }
    .og-gauges { order: 2; }
    .og-rail { order: 3; }
}

@media (max-width: 720px) {
    /* 窄屏先给参数，再给图纸与读数 */
    .og-rail { order: 1; }
    .og-stage { order: 2; }
    .og-gauges { order: 3; }

    #ogBoard { min-width: 546px; }

    .og-stage-head { flex-wrap: wrap; }
    .og-stage-head::after {
        content: "左右滑动";
        order: 3;
        font-family: var(--d3-mono);
        font-size: 9.5px;
        letter-spacing: .04em;
        color: var(--d3-ink-3);
        border: 1px dashed var(--d3-line-2);
        border-radius: 4px;
        padding: 1px 5px;
    }

    .og-gauges { grid-template-columns: minmax(0, 1fr); }
    .og-gauge { grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 4px 12px; }
    .og-gauge svg { grid-row: span 3; }
    .og-gauge::after { left: 0; right: 0; }

    .og-verdict { flex-wrap: wrap; }
    .og-chips { margin-left: 48px; justify-content: flex-start; }
    .og-actions { flex-wrap: wrap; }
    .og-btn { flex: 1 1 auto; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    .og-seg label, .og-btn, .og-inline-btn, .og-pick { transition: none; }
}