/* 作品集網站｜橘白格線
   視覺沿用 2026-08-08 PDF 印章案例卡 (theme.css) */

:root {
  --orange: #E27F2E;
  --ink: #40444D;
  --muted: #73777e;
  --paper: #F6F7F8;
  --line: rgba(0, 0, 0, .09);
  --grid: rgba(0, 0, 0, .03);
  --max: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 40px 40px;
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC",
               "Microsoft JhengHei", sans-serif;
  font-size: 17px;
  line-height: 1.85;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- header ---------- */

.site-head {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--line);
}

.site-name {
  margin: 0;
  color: var(--orange);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .16em;
}

.site-lead {
  margin: 26px 0 0;
  font-size: 25px;
  font-weight: 700;
  line-height: 1.6;
}

.site-sub {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px;
}

/* ---------- case list ---------- */

.section-label {
  margin: 56px 0 20px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .16em;
}

.case {
  display: block;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
  border-radius: 14px;
  background: #fff;
  color: inherit;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .04);
  transition: transform .15s ease, box-shadow .15s ease;
}

.case:hover,
.case:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, .08);
}

.case-no { color: var(--orange); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.case-title { margin: 10px 0 0; font-size: 22px; font-weight: 800; line-height: 1.5; }
.case-desc { margin: 12px 0 0; color: var(--muted); font-size: 16px; }
.case-more { margin: 18px 0 0; color: var(--orange); font-size: 15px; font-weight: 700; }

.pending {
  margin: 20px 0 0;
  padding: 20px 24px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- article ---------- */

.back {
  display: inline-block;
  margin: 40px 0 0;
  color: var(--orange);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.back:hover { text-decoration: underline; }

.art-head { padding: 26px 0 36px; border-bottom: 1px solid var(--line); }
.art-title { margin: 0; color: var(--orange); font-size: 34px; font-weight: 900; line-height: 1.4; }
.art-sub { margin: 18px 0 0; font-size: 19px; font-weight: 500; }
.art-meta { margin: 22px 0 0; color: var(--muted); font-size: 15px; }

h2 {
  margin: 56px 0 18px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 21px;
  font-weight: 800;
  line-height: 1.5;
}

p { margin: 0 0 18px; }

ul { margin: 0 0 18px; padding-left: 20px; }
li { margin: 0 0 10px; }

strong { font-weight: 800; }

.flow-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 0 0 22px;
}

.flow-box {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.flow-box.now { border: 2px solid var(--orange); }
.flow-box h3 { margin: 0 0 14px; color: var(--orange); font-size: 15px; font-weight: 800; letter-spacing: .06em; }
.flow-box ol { margin: 0; padding-left: 20px; font-size: 16px; }
.flow-box li { margin: 0 0 8px; }

/* ---------- 案例卡輪播 ---------- */

.carousel { margin: 30px 0 0; }

.carousel-frame { position: relative; }

.track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  outline: none;
  -webkit-overflow-scrolling: touch;
}

.track::-webkit-scrollbar { display: none; }

.track:focus-visible { box-shadow: 0 0 0 3px rgba(226, 127, 46, .35); border-radius: 12px; }

.slide {
  flex: 0 0 100%;
  margin: 0;
  scroll-snap-align: center;
}

.slide img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}

/* 沒有 JS 時退回「一排可左右捲的卡」，控制項不出現 */
.nav, .carousel-foot { display: none; }

.is-live .nav { display: flex; }
.is-live .carousel-foot { display: flex; }

.nav {
  position: absolute;
  top: 50%;
  z-index: 2;
  width: 46px;
  height: 46px;
  transform: translateY(-50%);
  align-items: center;
  justify-content: center;
  padding: 0 0 4px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, .94);
  color: var(--orange);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .12);
  transition: transform .15s ease, opacity .15s ease;
}

.nav:hover:not(:disabled) { transform: translateY(-50%) scale(1.08); }
.nav:disabled { opacity: .28; cursor: default; }
/* 箭頭壓在卡片邊緣內側，不要掛在框外——
   框外在寬螢幕看得到，視窗一窄就被裁掉 */
.nav.prev { left: 10px; }
.nav.next { right: 10px; }

.carousel-foot {
  margin: 18px 0 0;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.dots { display: flex; gap: 9px; }

.dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(64, 68, 77, .22);
  cursor: pointer;
  transition: background .15s ease, transform .15s ease;
}

.dot:hover { background: rgba(64, 68, 77, .4); }
.dot.on { background: var(--orange); transform: scale(1.35); }

.counter { margin: 0; color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }

@media (max-width: 640px) {
  .nav.prev { left: 4px; }
  .nav.next { right: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  .nav { transition: none; }
  .dot { transition: none; }
}

.caveat {
  margin: 30px 0 0;
  padding: 22px 26px;
  border-left: 4px solid var(--orange);
  border-radius: 0 12px 12px 0;
  background: #fff;
  color: var(--muted);
  font-size: 16px;
}

.caveat p:last-child { margin-bottom: 0; }

/* ---------- footer ---------- */

.site-foot {
  margin: 80px 0 0;
  padding: 30px 0 60px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-foot a { color: var(--muted); }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .site-head { padding: 44px 0 30px; }
  .site-lead { font-size: 21px; }
  .art-title { font-size: 27px; }
  .flow-pair { grid-template-columns: 1fr; }
}