/* css/case.css — 案例頁（works/*.html）版型，沿用 style.css 的 tokens */

.case-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px clamp(20px, 4vw, 48px);
  background: rgba(250, 246, 239, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(23, 20, 26, 0.08);
}
.case-nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
}
.case-nav__logo span { color: var(--rose); }
.case-nav__links { display: flex; align-items: center; gap: 8px; }
.case-nav__links a {
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  padding: 9px 14px;
  border-radius: 999px;
  transition: background var(--dur-fast) var(--ease-out);
}
.case-nav__links a:hover { background: rgba(23, 20, 26, 0.07); }

.case {
  max-width: 880px;
  margin: 0 auto;
  padding: var(--space-5) clamp(20px, 5vw, 48px) var(--space-6);
}

.case__header {
  display: grid;
  grid-template-columns: 1fr minmax(180px, 240px);
  gap: clamp(24px, 5vw, 56px);
  align-items: center;
  margin-bottom: var(--space-5);
}
.case__eyebrow {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--rose);
  margin-bottom: var(--space-2);
}
.case__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--space-1);
}
.case__sub {
  font-family: var(--font-display);
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 500;
  color: var(--ink-soft);
  margin-bottom: var(--space-3);
}
.case__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
}
.case__meta li {
  background: var(--white);
  border: 1px solid rgba(23, 20, 26, 0.1);
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  color: var(--ink-soft);
}
.case__meta li strong { color: var(--ink); font-weight: 700; }

/* 卡面視覺 */
.case__card {
  position: relative;
  aspect-ratio: 5 / 7;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 24px 50px rgba(30, 25, 20, 0.2);
  transform: rotate(3deg);
  background: var(--ink);
}
.case__card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case__card-corner {
  position: absolute;
  top: 12px;
  left: 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.05;
  color: var(--white);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.case__card-corner i { font-style: normal; font-size: 0.9em; }

.case section { margin-bottom: var(--space-4); }
.case h2 {
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: 10px;
}
.case h2::before {
  content: "♠";
  color: var(--rose);
  font-size: 0.8em;
}
.case p { color: var(--ink-soft); margin-bottom: var(--space-2); max-width: 42em; }

.case__results {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 12px;
}
.case__results li {
  background: var(--white);
  border-radius: 14px;
  padding: 16px 20px 16px 46px;
  box-shadow: 0 8px 24px rgba(40, 30, 20, 0.08);
  position: relative;
  color: var(--ink);
}
.case__results li::before {
  content: "♦";
  position: absolute;
  left: 18px;
  top: 16px;
  color: var(--rose);
}

.case__demo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 15px 26px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.case__demo:hover { transform: translateY(-3px); box-shadow: 0 12px 26px rgba(23, 20, 26, 0.3); }

/* 上一件／下一件 */
.case__pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(23, 20, 26, 0.1);
}
.case__pager a {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1.5px solid rgba(23, 20, 26, 0.2);
  transition: background var(--dur-fast) var(--ease-out);
  max-width: 46%;
}
.case__pager a:hover { background: var(--white); }
.case__pager a span { display: block; font-size: 12px; font-weight: 500; color: var(--ink-soft); }

/* 頁尾 CTA */
.case-footer {
  background: linear-gradient(160deg, var(--periwinkle) 0%, var(--periwinkle-deep) 100%);
  border-radius: var(--radius-frame) var(--radius-frame) 0 0;
  text-align: center;
  padding: var(--space-5) clamp(20px, 5vw, 48px);
  color: var(--white);
}
.case-footer h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.case-footer .btn-mail {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 15px 26px;
  border-radius: 999px;
  background: var(--white);
  color: var(--periwinkle-deep);
  box-shadow: 0 12px 28px rgba(20, 25, 60, 0.25);
  transition: transform var(--dur-fast) var(--ease-out);
}
.case-footer .btn-mail:hover { transform: translateY(-3px); }
.case-footer p.copyright { margin-top: var(--space-3); font-size: 13px; opacity: 0.85; }

@media (max-width: 640px) {
  .case__header { grid-template-columns: 1fr; }
  .case__card { max-width: 220px; margin: 0 auto; }
  .case__pager a { max-width: 100%; }
  .case__pager { flex-direction: column; }
}