/* ═══════════════════════════════════════════════════════════════
   product.css — Omni Cosplay 万相次元  v3.0
   Product detail page
   ═══════════════════════════════════════════════════════════════ */

/* ── Product Detail Layout ───────────────────────────────────── */
.omni-product-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:32px 0}

/* ── Gallery ─────────────────────────────────────────────────── */
.omni-gallery{display:flex;flex-direction:column;gap:12px}
.omni-gallery__main{aspect-ratio:1/1;background:var(--bg2);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:100px;overflow:hidden;position:relative}
.omni-gallery__thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.omni-gallery__thumb{aspect-ratio:1/1;background:var(--bg2);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:28px;border:2px solid transparent;cursor:pointer;transition:border-color .15s}
.omni-gallery__thumb.active,.omni-gallery__thumb:hover{border-color:var(--gold)}

/* ── Product Info Panel ──────────────────────────────────────── */
.omni-product-info{display:flex;flex-direction:column;gap:0}
.omni-product-info__brand{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);font-family:var(--font-display);font-weight:600;margin-bottom:8px}
.omni-product-info__breadcrumb{margin-bottom:10px}
.omni-product-info__badges{margin-bottom:12px}
.omni-product-info__name{font-family:var(--font-display);font-size:clamp(20px,2.4vw,28px);font-weight:700;color:var(--fg);line-height:1.2;margin:0 0 8px}
.omni-product-info__stars{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--gold)}
.omni-product-info__stars span{color:var(--muted2);font-size:12px}
.omni-product-info__rating{margin-bottom:12px}
.omni-product-info__price{font-family:var(--font-display);font-size:36px;font-weight:700;color:var(--fg);margin-bottom:20px}
.omni-product-info__price-old{font-size:18px;color:var(--muted2);text-decoration:line-through;margin-left:4px}
.omni-product-info__save{font-size:13px;color:#fff;background:var(--accent);padding:2px 10px;border-radius:3px;font-weight:600}
.omni-product-info__notice{font-size:12px;color:var(--amber);background:var(--amber-bg);border:1px solid rgba(184,122,43,.15);border-radius:var(--radius-sm);padding:10px 12px;line-height:1.6}

/* ── Size / Option Selector ──────────────────────────────────── */
.omni-option-group{display:flex;flex-direction:column;gap:8px}
.omni-option-group__label{font-family:var(--font-display);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--fg)}
.omni-option-group__label em{font-weight:400;color:var(--muted);text-transform:none;font-style:normal;font-size:12px}
.omni-size-grid{display:flex;flex-wrap:wrap;gap:8px}
.omni-size-btn{min-width:52px;height:36px;padding:0 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font-display);font-size:13px;font-weight:600;color:var(--fg);cursor:pointer;transition:all .15s;background:#fff}
.omni-size-btn:hover{border-color:var(--gold)}
.omni-size-btn.active{background:var(--fg);color:#fff;border-color:var(--fg)}
.omni-size-btn.oos{opacity:.35;cursor:not-allowed;text-decoration:line-through}

/* ── Add to Cart Row ─────────────────────────────────────────── */
.omni-add-to-cart-row{display:flex;gap:12px;align-items:stretch}
.omni-qty-input{display:flex;align-items:center;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;overflow:hidden}
.omni-qty-input button{width:36px;height:100%;font-size:18px;color:var(--muted);background:none;border:none;cursor:pointer;transition:color .15s}
.omni-qty-input button:hover{color:var(--accent)}
.omni-qty-input input{width:44px;text-align:center;border:none;font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--fg);outline:none;background:#fff}

/* ── Product Detail Tabs ─────────────────────────────────────── */
.omni-tabs{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:24px}
.omni-tab{font-family:var(--font-display);font-size:14px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);padding:12px 24px;cursor:pointer;position:relative;transition:color .15s;background:none;border:none}
.omni-tab:hover{color:var(--fg)}
.omni-tab.active{color:var(--accent)}
.omni-tab.active::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--accent)}
.omni-tab-panel{display:none;padding:16px 0}
.omni-tab-panel.active{display:block}
.omni-tab-panel p,.omni-tab-panel li{font-size:14px;color:var(--muted);line-height:1.75}
.omni-tab-panel ul{list-style:disc;padding-left:20px;display:flex;flex-direction:column;gap:6px}
.omni-size-table{width:100%;border-collapse:collapse;margin:12px 0}
.omni-size-table th,.omni-size-table td{padding:10px 16px;text-align:left;font-size:13px;border-bottom:1px solid var(--border2)}
.omni-size-table th{font-family:var(--font-display);font-weight:700;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--fg);background:var(--bg2)}

/* ── Related Section ─────────────────────────────────────────── */
.omni-related-section{padding:40px 0 0}

/* ── Price block (HTML class names) ──────────────────────────── */
.omni-product-info__price{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;font-size:unset;font-weight:unset;color:unset;margin-bottom:20px}
.omni-product-info__price-main{font-family:var(--font-display);font-size:36px;font-weight:700;color:var(--fg)}
.omni-product-info__price-save{font-size:13px;color:#fff;background:var(--accent);padding:2px 10px;border-radius:3px;font-weight:600;display:inline-block}

/* ── Rating row ──────────────────────────────────────────────── */
.omni-product-info__rating{display:flex;align-items:center;gap:6px;font-size:14px;margin-bottom:12px}
.omni-product-info__rating strong{color:var(--fg)}
.omni-product-info__rating span:last-child{color:var(--muted2);font-size:12px}

/* ── Breadcrumb ──────────────────────────────────────────────── */
.omni-product-info__breadcrumb{font-size:13px;color:var(--muted2);display:flex;align-items:center;gap:4px;flex-wrap:wrap;margin-bottom:10px}
.omni-product-info__breadcrumb a{color:var(--muted2)}
.omni-product-info__breadcrumb a:hover{color:var(--fg)}

/* ── Badges row ──────────────────────────────────────────────── */
.omni-product-info__badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}

/* ── Hints ───────────────────────────────────────────────────── */
.omni-shipping-hint,.omni-production-hint{font-size:12px;color:var(--amber);background:var(--amber-bg);border:1px solid rgba(184,122,43,.15);border-radius:var(--radius-sm);padding:10px 12px;line-height:1.6;display:flex;align-items:flex-start;gap:8px;margin-bottom:10px}
.omni-production-hint{margin-bottom:24px}

/* ── Variant sections ────────────────────────────────────────── */
.omni-variant-section{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.omni-variant-label{font-family:var(--font-display);font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--fg)}
.omni-variant-label span{font-weight:400;color:var(--muted);text-transform:none;font-size:12px;letter-spacing:0}

/* ── Quantity row + stepper ──────────────────────────────────── */
.omni-qty-row{display:flex;align-items:center;gap:16px;margin-bottom:14px}
.omni-qty-stepper{display:flex;align-items:center;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;overflow:hidden}
.omni-qty-stepper button{width:36px;height:44px;font-size:18px;color:var(--muted);background:none;border:none;cursor:pointer;transition:color .15s}
.omni-qty-stepper button:hover{color:var(--accent)}
.omni-qty-stepper input{width:44px;text-align:center;border:none;border-left:1px solid var(--border2);border-right:1px solid var(--border2);font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--fg);outline:none;background:#fff;height:44px}

/* ── Product tabs ────────────────────────────────────────────── */
.omni-product-tabs{margin-top:40px}
.omni-tabs-nav{display:flex;gap:0;border-bottom:1px solid var(--border);margin-bottom:24px;overflow-x:auto;overflow-y:hidden}
.omni-tab-btn{font-family:var(--font-display);font-size:14px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);padding:12px 24px;cursor:pointer;position:relative;transition:color .15s;background:none;border:none;white-space:nowrap}
.omni-tab-btn:hover{color:var(--fg)}
.omni-tab-btn.active{color:var(--accent)}
.omni-tab-btn.active::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--accent)}

/* ── Spec table ──────────────────────────────────────────────── */
.omni-spec-table{width:100%;border-collapse:collapse;margin:12px 0}
.omni-spec-table td{padding:10px 16px;font-size:13px;border-bottom:1px solid var(--border2)}
.omni-spec-table tr td:first-child{font-family:var(--font-display);font-weight:700;font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted2);background:var(--bg2);width:200px}

/* ── Review cards ────────────────────────────────────────────── */
.omni-reviews-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.omni-review-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;display:flex;flex-direction:column;gap:8px}
.omni-review-card__stars{color:var(--gold);font-size:14px}
.omni-review-card__title{font-family:var(--font-display);font-size:15px;font-weight:600;color:var(--fg)}
.omni-review-card__body{font-size:13px;color:var(--muted);line-height:1.7;flex:1}
.omni-review-card__meta{display:flex;align-items:center;gap:12px;padding-top:8px;border-top:1px solid var(--border2)}
.omni-review-card__author{font-size:13px;font-weight:600;color:var(--fg)}
.omni-review-card__verified{font-size:11px;color:var(--green);font-family:var(--font-display);letter-spacing:.04em;font-weight:600}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width:768px){
  .omni-product-layout{grid-template-columns:1fr;gap:24px}
  .omni-reviews-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .omni-product-layout{grid-template-columns:1fr}
  .omni-product-info__price-main{font-size:28px}
  .omni-add-to-cart-row{flex-wrap:wrap}
}