/* iOS Safari 不要自動放大文字：手機與桌機字級比例一致 */
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

/* =============================================
   REX CHANG · GRID MINIMALIST DESIGN SYSTEM
   Shared stylesheet for all pages
   ============================================= */

:root {
  --bg: #FAFAFA;
  --bg-soft: #F2F2F2;
  --bg-dark: #161616;
  --text: #222222;
  --text-soft: #6B6B6B;
  --text-muted: #9A9A9A;
  --accent: #111111;
  --accent-soft: #555555;
  --line: #E0E0E0;
  --line-strong: #D0D0D0;
  --tile-bg: #1a1a1a;
  --nav-bg: rgba(250, 250, 250, 0.65);
  --soft-shadow: 0 30px 80px rgba(0,0,0,0.5);
  --gutter: 24px;
  --gutter-sm: 16px;
  color-scheme: light;

  /* Premium Liquid Glass light-theme values */
  --glass-bg: rgba(250, 250, 250, 0.45);
  --glass-border: 1px solid rgba(255, 255, 255, 0.6);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05), inset 0 1px 0 0 rgba(255, 255, 255, 0.8);
  --glass-blur: blur(24px) saturate(190%);
  --glass-glow: 0 0 20px rgba(0, 0, 0, 0.05);
}

/* ===== DARK THEME ===== */
[data-theme="dark"] {
  --bg: #101010;
  --bg-soft: #1A1A1A;
  --bg-dark: #0E0C0B;
  --text: #EAEAEA;
  --text-soft: #9E9E9E;
  --text-muted: #6E6E6E;
  --accent: #EDEDED;
  --accent-soft: #BFBFBF;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.20);
  --tile-bg: #0A0A0A;
  --nav-bg: rgba(16, 16, 16, 0.65);
  --soft-shadow: 0 30px 80px rgba(0,0,0,0.7);
  color-scheme: dark;

  /* Premium Liquid Glass dark-theme values */
  --glass-bg: rgba(16, 16, 16, 0.45);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45), inset 0 1.5px 0.5px 0 rgba(255, 255, 255, 0.06);
  --glass-blur: blur(24px) saturate(190%);
  --glass-glow: 0 0 20px rgba(255, 255, 255, 0.03);
}
[data-theme="dark"] body { background: var(--bg); color: var(--text); }
[data-theme="dark"] .nav { background: var(--glass-bg); }
[data-theme="dark"] .status-card .label { background: var(--bg); }
[data-theme="dark"] .field input,
[data-theme="dark"] .field textarea,
[data-theme="dark"] .field select { color: var(--text); border-bottom-color: var(--text-soft); }
[data-theme="dark"] .options .opt input:checked + .card { background: var(--text); color: var(--bg); }
[data-theme="dark"] .options .opt input:checked + .card .ic { color: var(--bg); }
[data-theme="dark"] .options .opt input:checked + .card .desc { color: rgba(16,16,16,0.55); }
[data-theme="dark"] .scale .opt.active { background: var(--text); color: var(--bg); }
[data-theme="dark"] .chip-input input:checked + span { background: var(--text); color: var(--bg); border-color: var(--text); }
[data-theme="dark"] .btn { background: var(--text); color: var(--bg); border-color: var(--text); }
[data-theme="dark"] .btn:hover { background: var(--accent); color: var(--bg); border-color: var(--accent); }
[data-theme="dark"] .btn.outline { background: transparent; color: var(--text); border-color: var(--text); }
[data-theme="dark"] .btn.outline:hover { background: var(--text); color: var(--bg); }
[data-theme="dark"] .article-body p,
[data-theme="dark"] .article-body h2 { color: var(--text); }
[data-theme="dark"] .article-body p.lead { color: var(--text-soft); }
[data-theme="dark"] .reader .reader-panel { background: var(--bg); }
[data-theme="dark"] .reader .reader-top { background: rgba(16,16,16,0.95); }
[data-theme="dark"] .form-hero .stack { background: #0E0C0B; }
[data-theme="dark"] .post:hover { background: var(--bg-soft); }
[data-theme="dark"] .filter-bar { background: var(--nav-bg); }
[data-theme="dark"] .filter-bar.solid { background: var(--bg); }
[data-theme="dark"] .article-sidebar .author .avatar { background: var(--accent); color: var(--bg); }
[data-theme="dark"] .next-series { background: var(--bg-soft); }
[data-theme="dark"] .next-series a:hover { background: var(--bg); }
[data-theme="dark"] .cta { background: var(--bg-soft); }
[data-theme="dark"] .hover-hint .pill { background: rgba(255,255,255,0.92); color: var(--bg); }
[data-theme="dark"] .article-hero .titlebox h1 { text-shadow: 0 2px 18px rgba(0,0,0,0.5); }
[data-theme="dark"] .feature .image,
[data-theme="dark"] .gallery-tile,
[data-theme="dark"] .strip .tile,
[data-theme="dark"] .album-grid .photo,
[data-theme="dark"] .collection .cover,
[data-theme="dark"] .post .thumb,
[data-theme="dark"] .article .thumb,
[data-theme="dark"] .related-card .img,
[data-theme="dark"] .hero-image,
[data-theme="dark"] .intro .image { background: var(--tile-bg); }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  font-size: 14px;
}
a { color: inherit; text-decoration: none; }
picture { display: contents; }
img { display: block; max-width: 100%; }
.serif { font-family: 'Playfair Display', Georgia, serif; }

/* ===== LAYOUT WRAPPER ===== */
.site {
  max-width: 1440px;
  margin: 0 auto;
  border-left: 0.5px solid var(--line);
  border-right: 0.5px solid var(--line);
  min-height: 100vh;
}

/* ===== NAV ===== */
.nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 28px 40px;
  border-bottom: var(--glass-border);
  position: sticky;
  top: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow);
  z-index: 50;
}
.nav .brand {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  letter-spacing: 0.02em;
  font-weight: 500;
}
.nav .links {
  display: flex;
  gap: 56px;
  justify-content: flex-end;
  align-items: center;
  font-size: 13px;
  letter-spacing: 0.06em;
}
.nav .links a {
  position: relative;
  transition: color 0.25s ease;
  line-height: 1;
}
.nav .links a:hover { color: var(--accent); }
/* Active dot — absolute so it doesn't add height to the link
   (otherwise the link box is taller than the theme toggle and
   flex `align-items: center` makes the toggle look mis-aligned) */
.nav .links a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  top: calc(100% + 8px);
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-50%);
}
.nav .menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  justify-self: end;
}
.nav .menu-btn span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  margin: 5px 0;
}

/* ===== EYEBROW / LABEL ===== */
.eyebrow {
  color: var(--accent);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ===== PHOTO META OVERLAYS ===== */
.photo-meta {
  position: absolute;
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-shadow: 0 1px 12px rgba(0,0,0,0.4);
}
.photo-meta .y {
  display: block;
  color: rgba(255,255,255,0.75);
  font-size: 12px;
  margin-top: 4px;
}
.photo-meta.bl { left: 32px; bottom: 32px; }
.photo-meta.tl { left: 32px; top: 32px; }
.photo-meta.br {
  right: 32px; bottom: 32px;
  color: rgba(255,255,255,0.78);
  font-size: 11px;
  letter-spacing: 0.1em;
}

/* ===== HOVER HINT PILL ===== */
.hover-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 2;
}
.hover-hint .pill {
  background: rgba(255,255,255,0.92);
  color: #222;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 10px 22px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  transform: translateY(8px);
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
}
.tile-clickable:hover .hover-hint { opacity: 1; }
.tile-clickable:hover .hover-hint .pill { transform: translateY(0); }

/* ===== STATUS PULSE DOT ===== */
.pulse {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.5);
  animation: pulse 2.4s cubic-bezier(0.4,0,0.2,1) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0,0,0,0.45); }
  70% { box-shadow: 0 0 0 12px rgba(0,0,0,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,0,0,0); }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  border: 0.5px solid var(--text);
  background: var(--text);
  color: var(--bg);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.btn:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.btn.outline { background: transparent; color: var(--text); }
.btn.outline:hover { background: var(--text); color: var(--bg); }
.btn .arrow { transition: transform 0.3s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ===== SECTION HEAD ===== */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 28px;
}
/* ===== UNIFIED VIEW-ALL LINK ===== */
.section-head a,
.view-all,
.strip-head a {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-soft);
  position: relative;
  padding-right: 22px;
  transition: color 0.3s ease, padding-right 0.3s ease;
  display: inline-flex;
  align-items: center;
  border: 0;
  text-decoration: none;
}
.section-head a::after,
.view-all::after,
.strip-head a::after {
  content: '→';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  transition: transform 0.3s ease, color 0.3s ease;
}
.section-head a:hover,
.view-all:hover,
.strip-head a:hover {
  color: var(--accent);
  padding-right: 28px;
}
.section-head a:hover::after,
.view-all:hover::after,
.strip-head a:hover::after {
  transform: translate(4px, -50%);
  color: var(--accent);
}

/* ===== THEME TOGGLE — Slider ===== */
.theme-toggle {
  position: relative;
  width: 52px;
  height: 22px;
  border-radius: 999px;
  border: 0.5px solid var(--line-strong);
  background: var(--bg-soft);
  cursor: pointer;
  margin-left: 22px;
  padding: 0;
  flex-shrink: 0;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.theme-toggle:hover { border-color: var(--accent); }
/* hide the legacy SVG icons; the thumb pseudo-element is the indicator */
.theme-toggle svg { display: none; }
/* Thumb */
.theme-toggle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 2px;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text);
  transition: left 0.45s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s ease, transform 0.3s ease;
}
.theme-toggle:hover::before { background: var(--accent); }
[data-theme="dark"] .theme-toggle::before {
  left: calc(100% - 18px);
}
/* tiny moon dimple inside the thumb when in dark mode */
.theme-toggle::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg-soft);
  transform: translateY(-50%) scale(0);
  opacity: 0;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease, left 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
[data-theme="dark"] .theme-toggle::after {
  left: calc(100% - 14px);
  transform: translate(-2px, -50%) scale(1);
  opacity: 1;
}

/* ===== PAGE HEADER (for inner pages) ===== */
.page-header {
  padding: 64px 56px 48px;
  border-bottom: 0.5px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
}
.page-header .title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(40px, 4.6vw, 60px);
  font-weight: 400;
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
}
.page-header .title .em { font-style: italic; }
.page-header .meta {
  color: var(--text-soft);
  font-size: 13px;
  text-align: right;
  line-height: 1.7;
}
.page-header .desc {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  max-width: 580px;
  margin-top: 18px;
  grid-column: 1 / -1;
}

/* ===== FOOTER ===== */
footer.foot {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  padding: 28px 40px;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  border-top: 0.5px solid var(--line);
}
footer.foot .center { text-align: center; }
footer.foot .right {
  display: flex;
  gap: 32px;
  justify-content: flex-end;
}
footer.foot a { transition: color 0.25s; }
footer.foot a:hover { color: var(--accent); }

/* ===== MOBILE OVERLAY MENU ===== */
.overlay-menu {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  display: none;
  flex-direction: column;
  padding: 28px 24px 32px;
  transform: translateY(-12px);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.overlay-menu.open { display: flex; opacity: 1; transform: translateY(0); }
.overlay-menu .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 36px;
}
.overlay-menu .top .brand { font-family: 'Playfair Display', serif; font-size: 18px; font-weight: 500; }
.overlay-menu .close {
  background: none; border: none; padding: 10px;
  font-size: 22px; cursor: pointer; line-height: 1;
}
.overlay-menu nav { display: flex; flex-direction: column; gap: 4px; padding: 12px 4px; }
.overlay-menu nav a {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  font-weight: 500;
  padding: 14px 0;
  color: var(--text);
}
.overlay-menu nav a.active { color: var(--accent); font-style: italic; }
.overlay-menu .divider {
  border-top: 0.5px solid var(--line-strong);
  margin: 18px 0 0;
  padding-top: 12px;
}
.overlay-menu .links2 a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 4px; font-size: 14px;
  border-bottom: 0.5px solid var(--line);
  color: var(--text);
}
.overlay-menu .links2 a:last-child { border-bottom: 0; }
.overlay-menu .links2 a span.arrow { color: var(--text-muted); font-size: 14px; }
.overlay-menu .footer-status {
  margin-top: auto;
  padding: 18px;
  border: 0.5px solid var(--line-strong);
  background: #2a2a2a;
  color: #f0f0f0;
  position: relative;
  overflow: hidden;
}
.overlay-menu .footer-status .stxt { font-size: 13px; display:flex; align-items:center; gap:10px; }

/* ===== LIGHTBOX ===== */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(20, 18, 16, 0.96);
  z-index: 200;
  display: none;
  flex-direction: column;
  opacity: 0;
  transition: opacity 0.35s ease;
}
.lightbox.open { display: flex; opacity: 1; }
.lightbox .lb-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 32px;
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.lightbox .lb-top .counter { font-variant-numeric: tabular-nums; }
.lightbox .lb-close {
  background: none; border: none; color: rgba(255,255,255,0.85);
  font-size: 28px; cursor: pointer; padding: 4px 8px;
  line-height: 1; transition: color 0.25s;
}
.lightbox .lb-close:hover { color: var(--accent); }
.lightbox .lb-stage {
  flex: 1; display: flex; align-items: center; justify-content: center;
  position: relative;
  padding: 0 80px 20px;
  overflow: hidden;
}
.lightbox .lb-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}
.lightbox .lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,0.05);
  border: 0.5px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.85);
  width: 48px; height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s;
  font-size: 18px;
}
.lightbox .lb-nav:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--accent);
  color: var(--accent);
}
.lightbox .lb-prev { left: 24px; }
.lightbox .lb-next { right: 24px; }
.lightbox .lb-meta {
  padding: 18px 32px 28px;
  color: #fff;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px 24px;
  align-items: end;
  border-top: 0.5px solid rgba(255,255,255,0.12);
}
.lightbox .lb-title {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.005em;
}
.lightbox .lb-title .y {
  color: rgba(255,255,255,0.55);
  font-size: 13px;
  letter-spacing: 0.06em;
  margin-left: 14px;
  font-family: 'Inter', sans-serif;
}
.lightbox .lb-exif {
  color: rgba(255,255,255,0.7);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.lightbox .lb-desc {
  grid-column: 1 / -1;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  line-height: 1.65;
  max-width: 600px;
  margin-top: 4px;
}

/* ===== REVEAL ANIMATION ===== */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.9s ease, transform 0.9s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  body { font-size: 13px; }
  .site { border-left: 0; border-right: 0; }
  .nav { padding: 20px 20px; grid-template-columns: 1fr auto; }
  .nav .links { display: none; }
  .nav .menu-btn { display: block; }

  .page-header { padding: 40px 20px 32px; grid-template-columns: 1fr; }
  .page-header .meta { text-align: left; font-size: 12px; }

  .lightbox .lb-stage { padding: 0 12px 12px; }
  .lightbox .lb-prev { left: 8px; }
  .lightbox .lb-next { right: 8px; }
  .lightbox .lb-nav { width: 40px; height: 40px; }
  .lightbox .lb-top { padding: 14px 18px; font-size: 11px; }
  .lightbox .lb-meta { padding: 14px 18px 22px; grid-template-columns: 1fr; }
  .lightbox .lb-title { font-size: 19px; }

  footer.foot { grid-template-columns: 1fr; text-align: center; gap: 14px; padding: 28px 20px 36px; }
  footer.foot .center { order: 2; font-size: 11px; }
  footer.foot .right { justify-content: center; gap: 28px; order: 1; }
  footer.foot .left { order: 3; font-size: 11px; }
}

/* ==========================================================================
   REX CHANG · PREMIUM INTERACTION & AESTHETIC ENHANCEMENTS
   ========================================================================== */

/* 1. Dot-Grid Background & Ambient Glow Layer */
body {
  position: relative;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--line-strong) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.22;
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.4s ease;
}
[data-theme="dark"] body::before {
  opacity: 0.12;
  background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px);
}

.ambient-glow-1,
.ambient-glow-2 {
  position: fixed;
  pointer-events: none;
  z-index: -2;
  border-radius: 50%;
  filter: blur(140px);
  -webkit-filter: blur(140px);
  will-change: transform;
}
.ambient-glow-1 {
  top: -10%;
  left: -10%;
  width: 65vw;
  height: 65vw;
  background: radial-gradient(circle, rgba(0, 0, 0, 0.14) 0%, rgba(0, 0, 0, 0) 70%);
  animation: drift 30s ease-in-out infinite alternate;
}
.ambient-glow-2 {
  bottom: -15%;
  right: -10%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
  animation: drift-reverse 35s ease-in-out infinite alternate;
}
[data-theme="dark"] .ambient-glow-1 {
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 70%);
}
[data-theme="dark"] .ambient-glow-2 {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.03) 0%, rgba(0, 0, 0, 0) 70%);
}
@keyframes drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(8vw, 6vh, 0) scale(1.15); }
}
@keyframes drift-reverse {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-6vw, -8vh, 0) scale(0.9); }
}

/* 2. Premium Metallic Typographic Gradients */
.gradient-text {
  background: linear-gradient(135deg, var(--text) 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  will-change: transform;
}
[data-theme="dark"] .gradient-text {
  background: linear-gradient(135deg, var(--text) 45%, var(--accent-soft) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
h1.serif .em,
.page-header .title .em,
.next-series h3 .em {
  font-style: italic;
  position: relative;
  display: inline-block;
  color: var(--accent);
  /* gradient-text 的 text-fill-color:transparent 會繼承、background-clip 不會，
     導致 em 整段隱形 — 拿回自己的顏色（currentColor 跟主題連動） */
  -webkit-text-fill-color: currentColor;
}
h1.serif .em::after,
.page-header .title .em::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 100%;
  height: 1px;
  background: var(--accent-soft);
  opacity: 0.45;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}
.reveal.in h1.serif .em::after,
.page-header .title .em::after {
  transform: scaleX(1);
}

/* 3. High-End Custom Cursor */
.custom-cursor-dot,
.custom-cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate3d(-50%, -50%, 0);
  will-change: transform, width, height, opacity, background-color, border-color;
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              height 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease,
              border-color 0.3s ease,
              opacity 0.3s ease;
}
.custom-cursor-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent);
}
.custom-cursor-ring {
  width: 30px;
  height: 30px;
  border: 1px solid var(--accent);
  opacity: 0.6;
}

body.cursor-hover-link .custom-cursor-ring {
  width: 16px;
  height: 16px;
  border-color: var(--text);
  background-color: transparent;
  opacity: 0.8;
}
body.cursor-hover-link .custom-cursor-dot {
  background-color: var(--text);
}

/* ZOOM / VIEW hints inside the cursor ring */
.custom-cursor-ring::after {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.16em;
  opacity: 0;
  transition: opacity 0.25s ease;
  text-transform: uppercase;
}

body.cursor-hover-zoom .custom-cursor-ring {
  width: 68px;
  height: 68px;
  background-color: var(--accent);
  border-color: var(--accent);
  opacity: 0.96;
}
body.cursor-hover-zoom .custom-cursor-ring::after {
  content: 'ZOOM';
  opacity: 1;
  color: var(--bg);
}
body.cursor-hover-zoom .custom-cursor-dot {
  opacity: 0;
}

body.cursor-hover-view .custom-cursor-ring {
  width: 68px;
  height: 68px;
  background-color: var(--text);
  border-color: var(--text);
  opacity: 0.96;
}
body.cursor-hover-view .custom-cursor-ring::after {
  content: 'VIEW';
  opacity: 1;
  color: var(--bg);
}
body.cursor-hover-view .custom-cursor-dot {
  opacity: 0;
}

@media (hover: none) {
  .custom-cursor-dot,
  .custom-cursor-ring {
    display: none !important;
  }
}

/* 4. Elegant Tyopgraphic Preloader */
.preloader {
  position: fixed;
  inset: 0;
  background-color: var(--bg);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity;
}
.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.preloader-line {
  width: 0;
  height: 1px;
  background-color: var(--accent);
  margin-bottom: 24px;
  animation: fill-line 1.1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.preloader-name {
  font-family: 'Playfair Display', serif;
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text);
  opacity: 0;
  transform: translateY(10px);
  animation: fade-up-name 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}
@keyframes fill-line {
  0% { width: 0; }
  100% { width: 140px; }
}
@keyframes fade-up-name {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* 5. Glassmorphic Cards & Elevate-on-Hover Systems */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 4px;
  padding: 20px 24px;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.45s cubic-bezier(0.16, 1, 0.3, 1), 
              border-color 0.45s ease,
              background-color 0.45s ease;
  position: relative;
  will-change: transform, box-shadow;
  box-shadow: var(--glass-shadow);
}
[data-theme="dark"] .glass-card {
  background: var(--glass-bg);
  border: var(--glass-border);
}
.glass-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: var(--glass-shadow), 0 20px 50px rgba(0, 0, 0, 0.08);
}
[data-theme="dark"] .glass-card:hover {
  box-shadow: var(--glass-shadow), 0 20px 50px rgba(0, 0, 0, 0.5);
}

/* 6. Magnetic elements & physics motion reveals */
.btn {
  will-change: transform;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.3s ease,
              border-color 0.3s ease,
              color 0.3s ease;
}
.reveal {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition: opacity 1.1s cubic-bezier(0.16, 1, 0.3, 1),
              transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
  transition-delay: var(--delay, 0s);
}
.reveal.in {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Adjust chips inside tech-stack */
.tech-stack .chips span {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
  will-change: transform;
}
.tech-stack .chips span:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background-color: rgba(0, 0, 0, 0.06);
}
[data-theme="dark"] .tech-stack .chips span:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   REX CHANG · UPGRADED INTERACTIVE VISUAL SYSTEMS (CSS)
   ========================================================================== */

/* Scroll progress bar style */
.scroll-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: linear-gradient(to right, var(--accent), var(--accent-soft));
  transform-origin: left;
  transform: scaleX(0);
  will-change: transform;
  z-index: 100;
  pointer-events: none;
}

/* (3D tilt 與 spotlight glare 已於 2026-06-12 收斂移除) */

/* Soft parallax scroll shift */
.parallax-scroll {
  scale: var(--img-scale, 1.12);
  translate: 0 var(--parallax-offset, 0px);
  will-change: scale, translate;
  transition: scale 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-tile:hover .parallax-scroll,
.photo:hover .parallax-scroll,
.collection:hover .parallax-scroll,
.hero-image:hover .parallax-scroll,
.post:hover .parallax-scroll,
.article:hover .parallax-scroll,
.strip .tile:hover .parallax-scroll {
  --img-scale: 1.18;
}

/* 7. Premium Liquid Glass Filter Chips */
.chip {
  border: var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  color: var(--text-soft);
  padding: 8px 18px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 999px;
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
  white-space: nowrap;
  box-shadow: var(--glass-shadow);
  will-change: transform, box-shadow;
  display: inline-flex;
  align-items: center;
}
.chip:hover {
  color: var(--text);
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.08);
  transform: translateY(-1.5px);
  box-shadow: var(--glass-shadow), 0 4px 12px rgba(0, 0, 0, 0.08);
}
[data-theme="dark"] .chip:hover {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--glass-shadow), 0 4px 12px rgba(0, 0, 0, 0.25);
}
.chip.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  box-shadow: var(--glass-shadow), 0 4px 12px rgba(0, 0, 0, 0.1);
}
[data-theme="dark"] .chip.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  box-shadow: var(--glass-shadow), 0 4px 12px rgba(255, 255, 255, 0.05);
}




/* ===== Mobile menu hint（手機版 nav 上方的一行提示；桌機隱藏） ===== */
.mobile-menu-hint { display: none; }
@media (max-width: 900px) {
  .mobile-menu-hint {
    display: block;
    padding: 9px 20px;
    text-align: center;
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--text-soft);
    background: var(--bg-soft);
    border-bottom: 0.5px solid var(--line);
  }
  .mobile-menu-hint .ic { color: var(--accent); margin: 0 2px; }
}

/* ===== 品牌字標用 Cormorant Garamond（與婚禮站一致，& 符號清楚易辨） ===== */
header.nav .brand,
header.nav .brand a,
div.overlay-menu .brand,
div.overlay-menu .top .brand,
.preloader-name {
  font-family: 'Cormorant Garamond', 'Playfair Display', serif;
  font-weight: 600;
}


/* ===== 無障礙補強（2026-08-10）===== */
/* 主題鈕：可點擊區擴大到 ≥44px（視覺不變，用透明 pseudo 擴大命中範圍） */
.theme-toggle::after {
  content: '';
  position: absolute;
  inset: -11px;
  border-radius: 999px;
}
/* 漢堡鈕：實際點擊區 ≥44px */
.nav .menu-btn {
  min-width: 44px;
  min-height: 44px;
}
.nav .menu-btn span { margin-left: auto; margin-right: auto; }
/* 鍵盤焦點一律可見 */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}


/* ===== 手機首屏減厚（2026-08-10：Works 報告驗證後全站套用） ===== */
@media (max-width: 540px) {
  .mobile-menu-hint { padding: 4px 20px; font-size: 10px; letter-spacing: 0.06em; }
  /* 44px 漢堡點擊區是列內最高元素：8px padding → 全列 60px */
  .nav { padding: 8px 20px; }
  .page-header { padding: 26px 20px 22px; }
  .page-header .title { font-size: 36px; line-height: 1.05; }
  .page-header .desc { margin-top: 12px; font-size: 13px; line-height: 1.6; }
}


/* ===== 手機主題切換鈕（2026-08-12：從覆蓋選單底部移到 nav，太陽/月亮圖示） ===== */
.theme-icon-btn {
  display: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--text);
  justify-self: end;
}
.theme-icon-btn svg {
  width: 15px; height: 15px;
  stroke: currentColor; fill: none;
  stroke-width: 1.5; stroke-linecap: round;
  opacity: 0.85;
}
/* 亮色顯示月亮（點了變暗）；暗色顯示太陽（點了變亮） */
.theme-icon-btn .sun { display: none; }
[data-theme="dark"] .theme-icon-btn .sun { display: block; }
[data-theme="dark"] .theme-icon-btn .moon { display: none; }
@media (max-width: 900px) {
  .nav { grid-template-columns: 1fr auto auto; }
  .theme-icon-btn { display: inline-flex; }
}