/* ==========================================================================
   体积 / 容积计算器 · 页面专属样式
   设计意图：左侧挑容器形状、填尺寸，右侧图纸上的容器会跟着液位一起涨落，
   容积大数字压在图纸下方；批量对比区把几个容器排成一列横条，谁大谁小一眼看出。
   仅本页引用。
   ========================================================================== */

.vo-desk {
    display: grid;
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: 20px;
    align-items: start;
    margin-top: 26px;
}

/* ---------- 形状选择 ---------- */
.vo-shapes {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 7px;
    margin-bottom: 18px;
}

.vo-shape {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    appearance: none;
    font-family: inherit;
    font-size: 11.5px;
    font-weight: 600;
    line-height: 1.2;
    color: var(--d3-ink-3);
    background: var(--d3-paper);
    border: 1px solid var(--d3-line-2);
    border-radius: 8px;
    padding: 9px 4px 8px;
    transition: border-color .15s ease, color .15s ease, background .15s ease;
}

.vo-shape svg {
    width: 28px;
    height: 22px;
    stroke: currentColor;
    stroke-width: 1.4;
    fill: none;
    opacity: .8;
}

.vo-shape:hover {
    border-color: var(--d3-accent);
    color: var(--d3-accent);
    background: rgba(var(--d3-accent-rgb), .06);
}

.vo-shape.is-on {
    border-color: var(--d3-accent);
    background: var(--d3-accent);
    color: var(--d3-accent-ink);
    box-shadow: 0 2px 8px rgba(var(--d3-accent-rgb), .28);
}

.vo-shape.is-on svg { opacity: 1; }

/* ---------- 字段 ---------- */
.vo-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 13px 14px;
}

.vo-fields[hidden] { display: none; }

.vo-units {
    display: flex;
    gap: 6px;
    margin-bottom: 16px;
}

.vo-units input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.vo-units span {
    display: inline-block;
    cursor: pointer;
    font-size: 12.5px;
    font-weight: 600;
    padding: 7px 12px;
    border: 1px solid var(--d3-line-2);
    border-radius: 7px;
    color: var(--d3-ink-2);
    background: var(--d3-paper);
    transition: all .14s ease;
    user-select: none;
}

.vo-units span:hover {
    border-color: var(--d3-accent);
    color: var(--d3-accent);
}

.vo-units input:checked + span {
    background: rgba(var(--d3-accent-rgb), .12);
    border-color: var(--d3-accent);
    color: var(--d3-accent);
}

.vo-units input:focus-visible + span {
    outline: 2px solid rgba(var(--d3-accent-rgb), .6);
    outline-offset: 2px;
}

/* ---------- 液位滑块 ---------- */
.vo-fill { margin: 0 0 16px; }

.vo-fill-top {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 7px;
}

.vo-fill-top label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--d3-ink-2);
}

.vo-fill-top span {
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: 13px;
    font-weight: 700;
    color: var(--d3-accent);
}

#voFill {
    -webkit-appearance: none;
    appearance: none;
    display: block;
    width: 100%;
    height: 22px;
    margin: 0;
    padding: 0;
    background: transparent;
    cursor: pointer;
    accent-color: var(--d3-accent);
}

#voFill::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(to right,
        var(--d3-accent) 0,
        var(--d3-accent) var(--vo-fill, 100%),
        var(--d3-line-2) var(--vo-fill, 100%),
        var(--d3-line-2) 100%);
}

#voFill::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    margin-top: -5px;
    border-radius: 50%;
    border: 2px solid var(--d3-accent);
    background: var(--d3-card);
    box-shadow: 0 1px 4px rgba(var(--d3-accent-rgb), .3);
}

#voFill::-moz-range-track {
    height: 6px;
    border-radius: 3px;
    background: var(--d3-line-2);
}

#voFill::-moz-range-progress {
    height: 6px;
    border-radius: 3px;
    background: var(--d3-accent);
}

#voFill::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--d3-accent);
    background: var(--d3-card);
}

#voFill:focus-visible {
    outline: 2px solid rgba(var(--d3-accent-rgb), .55);
    outline-offset: 4px;
    border-radius: 4px;
}

.vo-fill-scale {
    display: flex;
    justify-content: space-between;
    margin-top: 3px;
    font-size: 11px;
    color: var(--d3-ink-3);
}

/* ---------- 按钮 ---------- */
.vo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px dashed var(--d3-line);
}

.vo-btn {
    appearance: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 13px;
    font-weight: 650;
    line-height: 1;
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid var(--d3-accent);
    background: var(--d3-accent);
    color: var(--d3-accent-ink);
    transition: filter .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}

.vo-btn:hover { filter: brightness(1.06); }

.vo-btn-ghost {
    background: transparent;
    border-color: var(--d3-line-2);
    color: var(--d3-ink-2);
}

.vo-btn-ghost:hover {
    border-color: var(--d3-accent);
    color: var(--d3-accent);
    background: rgba(var(--d3-accent-rgb), .06);
}

.vo-btn-sm { padding: 8px 12px; font-size: 12.5px; }

.vo-alerts { display: grid; gap: 8px; margin-top: 14px; }
.vo-alerts:empty { display: none; }

/* ---------- 右侧：图纸 + 数字 ---------- */
.vo-result {
    position: relative;
    background: var(--d3-card);
    border: 1px solid var(--d3-line);
    border-radius: var(--d3-radius);
    padding: 16px;
    overflow: hidden;
}

.vo-figure {
    margin: 0;
    border: 1px solid var(--d3-line);
    border-radius: var(--d3-radius-sm);
    background-color: var(--d3-paper);
    /* 方格纸：两条细线叠成 12px 网格 */
    background-image:
        linear-gradient(to right, rgba(120, 120, 120, .1) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(120, 120, 120, .1) 1px, transparent 1px);
    background-size: 12px 12px;
    overflow: hidden;
}

:root[data-theme="dark"] .vo-figure {
    background-image:
        linear-gradient(to right, rgba(140, 150, 170, .12) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(140, 150, 170, .12) 1px, transparent 1px);
}

#voSvg {
    display: block;
    width: 100%;
    height: auto;
}

.vo-figure figcaption {
    padding: 7px 11px;
    font-family: var(--d3-mono);
    font-size: 11.5px;
    color: var(--d3-ink-3);
    border-top: 1px dashed var(--d3-line-2);
    background: var(--d3-card);
}

.vo-number {
    margin-top: 14px;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--d3-line-2);
}

.vo-number-label {
    font-family: var(--d3-mono);
    font-size: 10.5px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--d3-ink-3);
}

.vo-number-value {
    display: flex;
    align-items: baseline;
    gap: 6px;
    margin-top: 4px;
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: clamp(34px, 5vw, 46px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -.04em;
    color: var(--d3-ink);
}

.vo-number-value small {
    font-family: var(--d3-sans);
    font-size: 14px;
    font-weight: 600;
    color: var(--d3-ink-3);
    letter-spacing: 0;
}

.vo-number-sub {
    margin-top: 5px;
    font-size: 12.5px;
    color: var(--d3-ink-3);
}

.vo-conv {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    margin: 12px 0 0;
    background: var(--d3-line);
    border: 1px solid var(--d3-line);
    border-radius: var(--d3-radius-sm);
    overflow: hidden;
}

.vo-conv > div {
    background: var(--d3-card);
    padding: 9px 10px;
}

.vo-conv dt {
    font-size: 11px;
    color: var(--d3-ink-3);
    margin-bottom: 2px;
}

.vo-conv dd {
    margin: 0;
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: 13.5px;
    font-weight: 650;
    color: var(--d3-ink);
}

.vo-weight {
    margin-top: 12px;
    display: grid;
    gap: 7px;
}

.vo-weight-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    font-size: 12.5px;
    color: var(--d3-ink-2);
    padding: 9px 11px;
    border-radius: 7px;
    background: rgba(var(--d3-accent-rgb), .07);
}

.vo-weight-row[hidden] { display: none; }

.vo-weight-row strong {
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: 14px;
    color: var(--d3-ink);
}

.vo-note {
    margin-top: 11px;
    font-size: 11.5px;
    line-height: 1.7;
    color: var(--d3-ink-3);
}

/* ---------- SVG 内元素 ---------- */
.vo-svg-shape {
    fill: rgba(var(--d3-accent-rgb), .1);
    stroke: var(--d3-accent);
    stroke-width: 1.7;
    stroke-linejoin: round;
}

.vo-svg-face {
    fill: rgba(var(--d3-accent-rgb), .07);
    stroke: var(--d3-accent);
    stroke-width: 1.4;
    stroke-linejoin: round;
}

.vo-svg-edge {
    fill: none;
    stroke: var(--d3-accent);
    stroke-width: 1.7;
    stroke-linejoin: round;
}

.vo-svg-liquid {
    fill: rgba(var(--d3-accent-rgb), .42);
    stroke: none;
}

.vo-svg-surface {
    fill: rgba(var(--d3-accent-rgb), .62);
    stroke: none;
}

.vo-svg-dim {
    stroke: var(--d3-ink-3);
    stroke-width: 1;
    stroke-dasharray: 3 3;
    fill: none;
}

.vo-svg-text {
    fill: var(--d3-ink-2);
    font-family: var(--d3-mono);
    font-size: 11px;
}

.vo-svg-label {
    fill: var(--d3-ink-3);
    font-family: var(--d3-mono);
    font-size: 10px;
}

/* ---------- 批量对比 ---------- */
.vo-compare-wrap {
    margin-top: 22px;
    background: var(--d3-card);
    border: 1px solid var(--d3-line);
    border-radius: var(--d3-radius);
    padding: 16px 18px 18px;
}

.vo-compare-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--d3-line);
}

.vo-compare-head h2 { font-size: var(--d3-fs-h3); }

.vo-compare-head span {
    font-size: 12px;
    color: var(--d3-ink-3);
    margin-left: auto;
}

.vo-compare {
    display: grid;
    grid-template-columns: minmax(240px, 340px) minmax(0, 1fr);
    gap: 16px;
    margin-top: 14px;
    align-items: start;
}

.vo-compare textarea {
    width: 100%;
    font-family: var(--d3-mono);
    font-size: 12.5px;
    line-height: 1.75;
    color: var(--d3-ink);
    background: var(--d3-paper);
    border: 1px solid var(--d3-line-2);
    border-radius: var(--d3-radius-sm);
    padding: 10px 12px;
    resize: vertical;
    outline: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.vo-compare textarea:focus {
    border-color: var(--d3-accent);
    box-shadow: 0 0 0 3px rgba(var(--d3-accent-rgb), .13);
}

.vo-compare-act {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-top: 9px;
}

.vo-compare-act .d3-hint { margin: 0; }

.vo-table { min-width: 430px; }

.vo-table td:not(:first-child) {
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
}

.vo-empty {
    text-align: center !important;
    color: var(--d3-ink-3);
    font-family: var(--d3-sans) !important;
}

.vo-bars {
    display: grid;
    gap: 8px;
    margin-top: 14px;
}

.vo-bars:empty { display: none; }

.vo-bar {
    display: grid;
    grid-template-columns: 88px minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
}

.vo-bar-name {
    font-size: 12px;
    color: var(--d3-ink-2);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.vo-bar-track {
    height: 8px;
    border-radius: 4px;
    background: var(--d3-paper-2);
    overflow: hidden;
}

.vo-bar-fill {
    display: block;
    height: 100%;
    border-radius: 4px;
    background: var(--d3-accent);
}

.vo-bar-val {
    font-family: var(--d3-mono);
    font-variant-numeric: tabular-nums;
    font-size: 11.5px;
    color: var(--d3-ink-3);
    white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .vo-desk { grid-template-columns: minmax(0, 1fr); }
    .vo-compare { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
    .vo-shapes { gap: 5px; }
    .vo-shape { font-size: 11px; padding: 8px 2px 7px; }
    .vo-shape svg { width: 24px; height: 19px; }
    .vo-units { flex-wrap: wrap; }
    .vo-number-value { font-size: 32px; }
    .vo-compare-wrap { padding: 14px; }
    .vo-bar { grid-template-columns: 68px minmax(0, 1fr) auto; }
}

@media print {
    .d3-top, .d3-foot, .vo-actions, .vo-compare-wrap, .d3-related { display: none !important; }
    .vo-desk { grid-template-columns: 1fr; }
    body { background: #fff; }
}