/* ============================================================
   賢記紙業 — Catalog & Product Detail components
   Extends styles.css. Design rule: NO rounded corners.
   Category accent is passed per-element via the --acc CSS var.
   ============================================================ */

/* ---------- Filter toolbar ---------- */
.cat-tools { background: #fff; border-bottom: 1px solid #eee; position: sticky; top: 4rem; z-index: 40; }
.cat-tools .row { padding: 1rem 0; display: flex; flex-direction: column; gap: 1rem; }
.tools-line { display: flex; flex-direction: column; gap: 1rem; align-items: flex-start; justify-content: space-between; }
@media (min-width: 860px) { .tools-line { flex-direction: row; align-items: center; } }

.cat-tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.cat-tab {
  font-family: var(--display); font-weight: 600; font-size: 0.92rem;
  padding: 0.55rem 1.1rem; background: #f1f1f1; color: #555;
  border-bottom: 3px solid transparent; transition: background .2s, color .2s, border-color .2s; white-space: nowrap;
}
.cat-tab .n { opacity: .6; font-size: 0.82rem; font-weight: 700; margin-left: 0.4rem; }
.cat-tab:hover { background: #e9e9e9; }
.cat-tab.active { background: var(--acc, #0000FF); color: #fff; border-color: rgba(0,0,0,.18); }
.cat-tab.active .n { opacity: .8; }

.cat-search { position: relative; width: 100%; }
@media (min-width: 860px) { .cat-search { width: 15rem; } }
.cat-search .icon { position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: #9aa; }
.cat-search input {
  width: 100%; padding: 0.6rem 1rem 0.6rem 2.25rem; border: 1px solid #e2e2e2;
  font-family: var(--display); font-size: 0.85rem; background: #fff; outline: none; transition: border-color .2s;
}
.cat-search input:focus { border-color: var(--coral); }

/* use-case chips */
.use-row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.use-row .lead { font-family: var(--sans); font-size: 0.78rem; color: #999; margin-right: 0.25rem; }
.use-chip {
  font-family: var(--sans); font-size: 0.8rem; color: #555;
  padding: 0.35rem 0.8rem; border: 1px solid #e2e2e2; background: #fff; transition: all .2s; white-space: nowrap;
}
.use-chip:hover { border-color: var(--navy); color: var(--navy); }
.use-chip.active { background: var(--navy); border-color: var(--navy); color: #fff; }

/* ---------- Catalog grid ---------- */
.catalog-body { background: var(--bg-soft); padding: 2.5rem 0 4rem; min-height: 50vh; }
.result-meta { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1.5rem; gap: 1rem; flex-wrap: wrap; }
.result-meta .count { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 1.1rem; }
.result-meta .count b { color: var(--coral); }
.result-meta .hint { font-family: var(--sans); font-size: 0.8rem; color: #aaa; }

.catalog-grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; }
@media (min-width: 560px) { .catalog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .catalog-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1180px) { .catalog-grid { grid-template-columns: repeat(4, 1fr); } }

.pcard {
  display: flex; flex-direction: column; background: #fff; border: 1px solid #e8e6e0;
  border-top: 3px solid var(--acc, #0000FF); position: relative; overflow: hidden;
  transition: box-shadow .25s, transform .25s;
}
.pcard:hover { box-shadow: 0 16px 34px rgba(0,0,0,.10); transform: translateY(-3px); }
/* header band — colour-coded consistently by CATEGORY (not per-paper) */
.pcard .phead {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  padding: 0.7rem 0.9rem; background: var(--tint, #f3f3f0);
}
.pcard .cat-badge {
  font-family: var(--display); font-weight: 700; font-size: 0.76rem; letter-spacing: .03em;
  color: #fff; background: var(--acc, #0000FF); padding: 0.26rem 0.6rem;
}
.pcard .price-flag {
  font-family: var(--display); font-weight: 700; font-size: 0.74rem; color: var(--navy);
  background: var(--yellow); padding: 0.26rem 0.55rem; white-space: nowrap;
}
.pcard .body { padding: 1rem 1.05rem 1.1rem; display: flex; flex-direction: column; flex: 1; }
.pcard .titleline { display: flex; align-items: center; gap: 0.55rem; }
/* small uniform paper-colour dot (every card has one — keeps the grid tidy) */
.pcard .dot { width: 15px; height: 15px; flex: none; border: 1px solid rgba(0,0,0,.18); background: var(--dot, #efece6); }
.pcard h3 { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 1.2rem; line-height: 1.2; }
.pcard .alias { font-family: var(--sans); font-size: 0.78rem; color: #a6a6a6; margin-top: 0.25rem; }
.pcard .sum { font-family: var(--sans); font-size: 0.86rem; color: #6d6d6d; line-height: 1.65; margin: 0.65rem 0 1rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pcard .meta { margin-top: auto; }
.pcard .specline { display: flex; align-items: baseline; gap: 0.55rem; margin-bottom: 0.35rem; }
.pcard .specline .k, .pcard .chips .k { font-family: var(--display); font-size: 0.8rem; color: #9a9a9a; letter-spacing: .04em; flex: none; }
.pcard .specline .v { font-family: var(--display); font-weight: 700; font-size: 0.98rem; color: var(--navy); }
.pcard .wbar { height: 6px; background: #ececec; position: relative; margin: 0.1rem 0 0.9rem; }
.pcard .wbar i { position: absolute; top: 0; bottom: 0; background: linear-gradient(90deg, var(--tint, #cfe0ff), var(--acc, #0000FF)); }
.pcard .chips { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.pcard .chips span.s { font-family: var(--display); font-size: 0.82rem; color: #4a4a4a; background: #f2efe9; padding: 0.28rem 0.62rem; }
.pcard .go { display: flex; align-items: center; justify-content: space-between; margin-top: 1rem; padding-top: 0.8rem; border-top: 1px solid #f0ede7; }
.pcard .go .t { font-family: var(--display); font-weight: 700; font-size: 0.88rem; color: var(--acc, #0000FF); }
.pcard .go .icon { width: 16px; height: 16px; color: var(--acc, #0000FF); transition: transform .2s; }
.pcard:hover .go .icon { transform: translateX(4px); }

.load-more-wrap { text-align: center; margin-top: 2.5rem; }
.empty-state { text-align: center; padding: 4rem 0; }
.empty-state .icon { width: 40px; height: 40px; color: #ccc; margin: 0 auto 1rem; }
.empty-state p { font-family: var(--display); font-size: 1.05rem; color: #aaa; }

/* ============================================================
   PRODUCT DETAIL
   ============================================================ */
.breadcrumb { background: #fff; border-bottom: 1px solid #f0f0f0; padding-top: 4rem; }
.breadcrumb .inner { padding: 0.9rem 0; display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap;
  font-family: var(--sans); font-size: 0.8rem; color: #aaa; }
.breadcrumb a { color: #777; transition: color .2s; }
.breadcrumb a:hover { color: var(--coral); }
.breadcrumb .sep { color: #ddd; }
.breadcrumb .cur { color: var(--navy); font-weight: 500; }

.pd-head { padding: 2.5rem 0 1rem; background: #fff; }
.pd-head .cat-badge { display: inline-block; font-family: var(--display); font-weight: 700; font-size: 0.72rem;
  letter-spacing: .1em; text-transform: uppercase; color: #fff; background: var(--acc, #0000FF); padding: 0.3rem 0.7rem; margin-bottom: 1rem; }
.pd-head h1 { font-family: var(--display); font-weight: 900; color: var(--ink); font-size: clamp(2rem, 4.5vw, 3rem); line-height: 1.08; }
.pd-head .alias { font-family: var(--sans); font-size: 0.92rem; color: #aaa; margin-top: 0.5rem; }
.pd-head .lead { font-family: var(--sans); font-size: 1.08rem; color: #555; line-height: 1.8; max-width: 46rem; margin-top: 1.1rem; }
.pd-desc { display: flex; flex-direction: column; gap: 0.6rem; margin-top: 1.25rem; max-width: 46rem; }
.pd-desc p { font-family: var(--sans); font-size: 0.92rem; color: #666; line-height: 1.8; padding-left: 1rem; border-left: 2px solid var(--line); }

.pd-body { background: var(--bg-soft); padding: 3rem 0 4rem; }
.pd-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; align-items: start; }
@media (min-width: 940px) { .pd-grid { grid-template-columns: 1.6fr 1fr; } }

/* at-a-glance card */
.glance { background: #fff; border: 1px solid #ececec; border-top: 4px solid var(--acc, #0000FF); padding: 1.5rem; }
@media (min-width: 940px) { .glance { position: sticky; top: 5rem; } }
.glance h4 { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 0.95rem; margin-bottom: 1.1rem; letter-spacing: .02em; }
.glance .gitem { margin-bottom: 1.25rem; }
.glance .glabel { font-family: var(--display); font-size: 0.78rem; letter-spacing: .1em; text-transform: uppercase; color: #999; margin-bottom: 0.5rem; }
.glance .gchips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.glance .gchips span { font-family: var(--display); font-size: 0.88rem; color: #4a4a4a; background: #f2efe9; padding: 0.32rem 0.65rem; }

/* weight scale */
.wscale { }
.wscale .track { height: 12px; background: linear-gradient(90deg, #cfe5ff, #6aa7ff, var(--acc, #0000FF)); position: relative; }
.wscale .marker { position: absolute; top: -3px; bottom: -3px; border: 2px solid var(--navy); background: rgba(255,255,255,.35); }
.wscale .ends { display: flex; justify-content: space-between; font-family: var(--display); font-size: 0.82rem; color: #999; margin-top: 0.45rem; }
.wscale .nowval { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 1.1rem; margin-top: 0.35rem; }

/* inquiry / price panel */
.inquiry { margin-top: 1.25rem; padding: 1.25rem; background: rgba(0,0,255,.04); border-left: 4px solid var(--coral); }
.inquiry .t { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 0.95rem; margin-bottom: 0.4rem; }
.inquiry p { font-family: var(--sans); font-size: 0.83rem; color: #777; line-height: 1.7; margin-bottom: 1rem; }
.inquiry .acts { display: flex; flex-direction: column; gap: 0.6rem; }
.inquiry .btn { justify-content: center; }
.price-line { font-family: var(--display); color: var(--navy); margin-bottom: 0.5rem; }
.price-line b { font-size: 1.4rem; color: var(--coral); }
.price-note { font-family: var(--sans); font-size: 0.76rem; color: #aaa; }

/* term helper */
.term-help { margin-bottom: 1.75rem; border: 1px solid #e8e8e8; background: #fff; }
.term-help summary { font-family: var(--display); font-weight: 600; font-size: 0.88rem; color: var(--navy);
  padding: 0.85rem 1.1rem; cursor: pointer; list-style: none; display: flex; align-items: center; gap: 0.5rem; }
.term-help summary::-webkit-details-marker { display: none; }
.term-help summary .icon { width: 16px; height: 16px; color: var(--coral); }
.term-help[open] summary { border-bottom: 1px solid #f0f0f0; }
.term-help .tbody { padding: 1rem 1.1rem 1.25rem; display: flex; flex-direction: column; gap: 0.8rem; }
.term-help dl { display: flex; gap: 0.75rem; align-items: baseline; }
.term-help dt { font-family: var(--display); font-weight: 700; color: var(--coral); font-size: 0.85rem; flex: none; width: 3.5rem; }
.term-help dd { font-family: var(--sans); font-size: 0.85rem; color: #666; line-height: 1.65; }

/* spec table */
.spec-block { margin-bottom: 1.75rem; }
.spec-block h3 { font-family: var(--display); font-weight: 700; color: var(--navy); font-size: 1.05rem; margin-bottom: 0.8rem; display: flex; align-items: center; gap: 0.5rem; }
.spec-block h3::before { content: ""; width: 0.85rem; height: 2px; background: var(--acc, #0000FF); }
.spec-cap { font-family: var(--sans); font-size: 0.82rem; color: #999; margin: 0.75rem 0 0.4rem; }
.spec-wrap { overflow-x: auto; border: 1px solid #e8e8e8; background: #fff; }
table.spec { width: 100%; border-collapse: collapse; min-width: 22rem; }
table.spec th, table.spec td { font-family: var(--sans); font-size: 0.92rem; text-align: left; padding: 0.7rem 1rem; white-space: nowrap; }
table.spec th { font-family: var(--display); font-weight: 700; color: #fff; background: var(--navy); font-size: 0.84rem; letter-spacing: .03em; }
table.spec td { color: #555; border-top: 1px solid #f0f0f0; }
table.spec tbody tr:nth-child(even) td { background: #fafafa; }
table.spec td.price { font-family: var(--display); font-weight: 700; color: var(--coral); }

/* related */
.related { margin-top: 1rem; }
.related h2 { font-family: var(--display); font-weight: 900; color: var(--navy); font-size: 1.5rem; margin-bottom: 1.5rem; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (min-width: 760px) { .related-grid { grid-template-columns: repeat(4, 1fr); } }

.notfound { text-align: center; padding: 6rem 1.5rem; }
.notfound h1 { font-family: var(--display); font-weight: 900; color: var(--navy); font-size: 2rem; margin-bottom: 1rem; }
.notfound p { font-family: var(--sans); color: #888; margin-bottom: 2rem; }

/* ---------- page hero (catalog/product share) ---------- */
.page-hero { position: relative; padding-top: 4rem; overflow: hidden; }
.page-hero .bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.page-hero .ov-light { position: absolute; inset: 0; background: rgba(249,246,241,.6); }
.page-hero .inner { position: relative; z-index: 2; padding: 4rem 0 3rem; }
.page-hero h1 { font-family: var(--display); font-weight: 900; color: var(--ink); font-size: clamp(2.5rem, 6vw, 3.5rem); margin-bottom: 0.75rem; line-height: 1.05; }
.page-hero p { font-family: var(--sans); color: #555; font-size: clamp(1rem, 2.5vw, 1.1rem); max-width: 40rem; line-height: 1.7; }