/* ==========================================================================
   89C 户型详情弹窗 · 与 style.css (Bonsai v3) 共用设计令牌
   图纸全部为 89C 官方 WebP 资源：外观 / PLAN 01 / PLAN 02 / 四立面 / 室内
   ========================================================================== */

/* 卡片上的「可点击」提示 */
#designs .gallery-item { cursor: pointer; }
#designs .gallery-item:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.gallery-item-view {
    position: absolute; top: 12px; right: 12px; z-index: 3;
    padding: 6px 11px; border-radius: var(--pill);
    background: rgba(250, 248, 245, .92); color: var(--ink);
    font-family: var(--f-mono); font-size: 9.5px; letter-spacing: .06em;
    opacity: 0; transform: translateY(-6px);
    transition: opacity var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
    pointer-events: none; white-space: nowrap;
}
#designs .gallery-item:hover .gallery-item-view,
#designs .gallery-item:focus-visible .gallery-item-view { opacity: 1; transform: none; }

/* ===== Modal shell ===== */
.plan-modal { position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center; }
.plan-modal.is-open { display: flex; }
.plan-modal-backdrop {
    position: absolute; inset: 0;
    background: rgba(8, 8, 8, .74);
    backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px);
    animation: planFade .3s var(--ease);
}
@keyframes planFade { from { opacity: 0; } to { opacity: 1; } }

.plan-modal-panel {
    position: relative; width: min(1440px, 96vw); max-height: 92vh;
    overflow-y: auto; overscroll-behavior: contain;
    background: var(--paper); color: var(--text);
    border: 1px solid rgba(255,255,255,.6); border-radius: 3px;
    box-shadow: 0 30px 90px rgba(0,0,0,.35);
    animation: planRise .4s var(--ease);
}
@keyframes planRise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* ===== Head ===== */
.plan-modal-head {
    display: flex; align-items: flex-start; justify-content: space-between; gap: 24px;
    padding: 28px 38px 24px; border-bottom: 1px solid var(--line);
    position: sticky; top: 0; z-index: 5; background: var(--paper);
}
.plan-eyebrow {
    display: block; font-family: var(--f-mono); font-size: 10.5px; font-weight: 500;
    letter-spacing: .2em; text-transform: uppercase; color: var(--red); margin-bottom: 14px;
}
.plan-title {
    font-family: var(--f-display); font-size: clamp(24px, 2.6vw, 34px);
    font-weight: 300; letter-spacing: -.04em; line-height: 1.15; color: var(--ink);
}
.plan-sub {
    margin-top: 10px; font-family: var(--f-mono); font-size: 11.5px;
    letter-spacing: .08em; color: var(--muted);
}
.plan-head-nav { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.plan-nav-btn, .plan-close {
    width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
    background: transparent; border: 1px solid var(--line); border-radius: 2px;
    color: var(--ink); font-size: 18px; line-height: 1;
    transition: var(--t-fast) var(--ease);
}
.plan-nav-btn:hover, .plan-close:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.plan-close { margin-left: 8px; font-size: 24px; background: var(--ink); color: #fff; border-color: var(--ink); }
.plan-close:hover { background: var(--red); border-color: var(--red); }
.plan-counter { font-family: var(--f-mono); font-size: 10.5px; letter-spacing: .1em; color: var(--muted); padding: 0 6px; }
.plan-lang {
    height: 38px; min-width: 42px; padding: 0 12px; background: transparent;
    border: 1px solid var(--line); border-radius: var(--pill);
    font-family: var(--f-mono); font-size: 11px; font-weight: 500;
    letter-spacing: .1em; color: var(--ink); transition: var(--t-fast) var(--ease);
}
.plan-lang:hover { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ===== Body ===== */
.plan-modal-body { display: grid; grid-template-columns: 1.18fr 1fr; }
.plan-col { padding: 28px 38px 34px; min-width: 0; }
.plan-col-left { border-right: 1px solid var(--line); background: var(--white); }
.plan-section-head { margin-bottom: 16px; }
.plan-section-head--spaced { margin-top: 26px; }
.plan-section-label {
    display: inline-flex; align-items: center; gap: 12px;
    font-family: var(--f-mono); font-size: 10.5px; font-weight: 500;
    letter-spacing: .18em; text-transform: uppercase; color: var(--ink);
}
.plan-section-label::before { content: ''; width: 22px; height: 1px; background: var(--red); }

/* ===== 图纸 tabs / stage ===== */
.plan-floor-tabs { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.plan-floor-tab {
    padding: 7px 15px; background: transparent; border: 1px solid var(--line);
    border-radius: var(--pill); font-family: var(--f-mono); font-size: 10.5px;
    letter-spacing: .06em; color: var(--muted); transition: var(--t-fast) var(--ease);
}
.plan-floor-tab:hover { border-color: var(--ink); color: var(--ink); }
.plan-floor-tab.active { background: var(--ink); border-color: var(--ink); color: #fff; }

.plan-stage { border: 1px solid var(--line); background: #fff; border-radius: 2px; }
.plan-stage-figure { margin: 0; }
.plan-stage-figure img {
    display: block; width: 100%; height: auto; cursor: zoom-in;
    transition: opacity var(--t-fast) var(--ease);
}
.plan-stage-figure img:hover { opacity: .88; }
.plan-stage-figure figcaption,
.plan-elev figcaption {
    padding: 9px 14px; border-top: 1px solid var(--line);
    font-family: var(--f-mono); font-size: 10px; letter-spacing: .06em;
    color: var(--muted); background: var(--paper);
}
.plan-zoom-hint {
    margin-top: 9px; font-family: var(--f-mono); font-size: 10px;
    letter-spacing: .05em; color: var(--soft); text-align: right;
}

.plan-elev-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 10px; }
.plan-elev { margin: 0; border: 1px solid var(--line); background: var(--paper); min-width: 0; }
.plan-elev img { display: block; width: 100%; height: auto; cursor: zoom-in; transition: opacity var(--t-fast) var(--ease); }
.plan-elev img:hover { opacity: .88; }
.plan-elev figcaption { display: flex; align-items: center; gap: 9px; }
.plan-elev figcaption span { color: var(--red); font-weight: 600; }

/* ===== 造型说明 ===== */
.plan-look { margin-top: 22px; padding: 16px 18px; background: var(--paper-2); border-left: 2px solid var(--red); }
.plan-look-row { font-size: 12px; line-height: 1.8; color: var(--text); }
.plan-look-row + .plan-look-row { margin-top: 5px; }
.plan-sum-key {
    display: inline-block; min-width: 76px; margin-right: 10px;
    font-family: var(--f-mono); font-size: 10px; letter-spacing: .06em; color: var(--red);
}
.plan-look-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.plan-look-chips span {
    padding: 4px 10px; border: 1px solid var(--line); border-radius: var(--pill);
    font-family: var(--f-mono); font-size: 9.5px; color: var(--muted); background: var(--white);
}

/* ===== 技术参数 ===== */
.plan-spec {
    display: grid; grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line);
}
.plan-spec-item { padding: 15px 10px 15px 0; border-right: 1px solid var(--line); }
.plan-spec-item:last-child { border-right: 0; }
.plan-spec-item strong {
    display: block; font-family: var(--f-display); font-size: clamp(18px, 1.8vw, 25px);
    font-weight: 300; letter-spacing: -.05em; color: var(--ink); line-height: 1.1;
}
.plan-spec-item span {
    display: block; margin-top: 7px; font-family: var(--f-mono);
    font-size: 9.5px; letter-spacing: .08em; color: var(--muted);
}

/* ===== 方案阶段算量 ===== */
.plan-tech { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.plan-tech-item {
    display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
    padding: 10px 12px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
    background: var(--white); min-width: 0;
}
.plan-tech-item span { font-size: 10.5px; color: var(--muted); white-space: nowrap; }
.plan-tech-item strong {
    font-family: var(--f-mono); font-size: 11px; font-weight: 500;
    color: var(--ink); white-space: nowrap;
}

/* ===== 室内效果（每款户型 4 张不同场景 / 局部特写） ===== */
.plan-interiors { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 10px; }
.plan-interior { margin: 0; min-width: 0; }
.plan-interior-frame { position: relative; border: 1px solid var(--line); border-radius: 2px; overflow: hidden; background: var(--paper-2); }
.plan-interior--lead .plan-interior-frame { border-color: var(--ink); }
.plan-interior img {
    display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; cursor: zoom-in;
    transition: opacity var(--t-fast) var(--ease);
}
.plan-interior img:hover { opacity: .86; }
.plan-interior-idx {
    position: absolute; top: 7px; left: 7px; z-index: 2;
    padding: 3px 7px; border-radius: 2px;
    background: rgba(250, 248, 245, .92); color: var(--ink);
    font-family: var(--f-mono); font-size: 9px; letter-spacing: .06em;
    pointer-events: none;
}
.plan-interior--lead .plan-interior-idx { background: var(--red); color: #fff; }
.plan-interior figcaption {
    margin-top: 6px; font-family: var(--f-mono); font-size: 10px;
    letter-spacing: .01em; color: var(--muted); line-height: 1.55;
    overflow-wrap: anywhere;
}
.plan-interior-note { margin-top: 10px; font-size: 11px; line-height: 1.7; color: var(--soft); }

/* ===== 主要装饰材料 ===== */
.plan-materials { display: grid; gap: 7px; }
.plan-material {
    display: grid; grid-template-columns: 40px minmax(0, 1fr) auto;
    align-items: center; gap: 11px; padding: 10px 12px;
    border: 1px solid var(--line); background: var(--white); border-radius: 2px;
}
.plan-material-code {
    display: flex; align-items: center; justify-content: center;
    height: 26px; border: 1px solid var(--red); border-radius: 2px;
    font-family: var(--f-mono); font-size: 10px; font-weight: 600;
    letter-spacing: .04em; color: var(--red);
}
.plan-material-text { min-width: 0; }
.plan-material-text strong { display: block; font-size: 11.5px; font-weight: 600; color: var(--ink); line-height: 1.45; }
.plan-material-text span { display: block; margin-top: 3px; font-family: var(--f-mono); font-size: 9.5px; color: var(--muted); line-height: 1.4; }
.plan-material-cat {
    font-size: 9.5px; color: var(--soft); white-space: nowrap;
    padding-left: 10px; border-left: 1px solid var(--line);
}
.plan-material-note { margin-top: 11px; font-size: 11px; line-height: 1.7; color: var(--soft); }

/* ===== Foot ===== */
.plan-modal-foot {
    display: flex; align-items: center; justify-content: space-between; gap: 26px;
    padding: 22px 38px 28px; border-top: 1px solid var(--line); background: var(--paper-2);
}
.plan-note { max-width: 88ch; font-size: 11.5px; line-height: 1.75; color: var(--muted); }
.plan-cta { flex-shrink: 0; }

/* ===== 放大视图 ===== */
.plan-lightbox {
    display: none; position: fixed; inset: 0; z-index: 3100;
    align-items: center; justify-content: center;
    background: rgba(8, 8, 8, .9); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
    padding: 5vh 4vw;
}
.plan-lightbox.is-open { display: flex; }
.plan-lightbox figure { margin: 0; max-width: 100%; text-align: center; }
.plan-lightbox img {
    display: block; max-width: 92vw; max-height: 80vh; width: auto; height: auto;
    object-fit: contain; background: #fff; border-radius: 2px;
}
.plan-lightbox figcaption {
    margin-top: 14px; font-family: var(--f-mono); font-size: 11px;
    letter-spacing: .08em; color: rgba(255,255,255,.72);
}
.plan-lightbox-close {
    position: absolute; top: 22px; right: 26px; z-index: 2;
    width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
    border: 1px solid rgba(255,255,255,.4); border-radius: 50%;
    background: transparent; color: #fff; font-size: 26px; line-height: 1;
}
.plan-lightbox-close:hover { background: var(--red); border-color: var(--red); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .plan-modal-panel { width: 96vw; }
    .plan-col { padding: 26px 24px 28px; }
    .plan-modal-head { padding: 24px; }
    .plan-modal-foot { padding: 20px 24px 24px; }
    .plan-modal-body { grid-template-columns: 1fr; }
    .plan-col-left { border-right: 0; border-bottom: 1px solid var(--line); }
    .plan-spec-item strong { font-size: 24px; }
}

@media (max-width: 768px) {
    .plan-modal { align-items: stretch; }
    .plan-modal-panel { width: 100vw; max-height: 100vh; border: 0; border-radius: 0; }
    .plan-modal-head { padding: 18px 18px 16px; gap: 12px; }
    .plan-eyebrow { margin-bottom: 9px; font-size: 9.5px; letter-spacing: .12em; }
    .plan-title { font-size: 21px; }
    .plan-sub { font-size: 10px; letter-spacing: .02em; }
    .plan-nav-btn, .plan-close { width: 34px; height: 34px; }
    .plan-counter { display: none; }
    .plan-col { padding: 22px 18px 24px; }
    .plan-spec-item { padding: 12px 6px 12px 0; }
    .plan-spec-item strong { font-size: 16px; white-space: nowrap; letter-spacing: -.06em; }
    .plan-spec-item span { font-size: 8.5px; }
    .plan-tech { grid-template-columns: 1fr; }
    .plan-tech-item { padding: 9px 11px; }
    .plan-elev-grid { grid-template-columns: 1fr; }
    .plan-material { grid-template-columns: 36px minmax(0, 1fr); }
    .plan-material-cat { display: none; }
    .plan-modal-foot { flex-direction: column; align-items: flex-start; gap: 14px; padding: 18px; }
    .plan-cta { width: 100%; }
    .gallery-item-view { display: none; }
    .plan-lang { height: 34px; min-width: 38px; padding: 0 9px; font-size: 10px; }
    .plan-lightbox-close { top: 12px; right: 14px; }
    /* 移动端没有 hover，改为卡片右下角常驻的角标提示 */
    #designs .gallery-item::after {
        content: '+'; position: absolute; right: 10px; bottom: 10px; z-index: 3;
        width: 26px; height: 26px; display: flex; align-items: center; justify-content: center;
        background: var(--red); color: #fff; border-radius: 50%; font-size: 17px; line-height: 1;
        font-family: var(--f-mono);
    }
}

@media (prefers-reduced-motion: reduce) {
    .plan-modal-backdrop, .plan-modal-panel { animation: none; }
}