/* ═══════════════════════════════════════════════════════════
   SAOMIN.TW — Common Styles
   Shared across all pages. Page-specific styles go in
   <style> blocks or separate CSS files.
   ═══════════════════════════════════════════════════════════ */

/* ─── RESET & VARIABLES ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #080808;
  --bg-secondary: #0f0f0f;
  --bg-card: #111111;
  --text: #e8e4dc;
  --text-dim: #999;
  --text-muted: #bbb;
  --accent: #e8e4dc;
  --border: rgba(232, 228, 220, 0.08);
  --border-hover: rgba(232, 228, 220, 0.25);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', 'Noto Sans TC', sans-serif;
  font-weight: 300;
  overflow-x: hidden;
  cursor: none;
}

a { color: inherit; }

/* ─── CUSTOM CURSOR ─── */
.cursor {
  position: fixed;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width .25s, height .25s, opacity .25s;
  mix-blend-mode: difference;
}
.cursor.hovering { width: 40px; height: 40px; opacity: .7; }

/* ─── PRELOADER ─── */
.preloader {
  position: fixed; inset: 0;
  background: var(--bg);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 2rem;
  transition: opacity .8s ease, visibility .8s ease;
}
.preloader.hide { opacity: 0; visibility: hidden; }
.preloader-text {
  font-size: .75rem;
  letter-spacing: .4em;
  color: var(--text-dim);
  font-family: 'Space Grotesk', monospace;
}
.preloader-bar-wrap {
  width: 200px; height: 1px;
  background: rgba(255,255,255,.08);
  overflow: hidden;
}
.preloader-bar {
  height: 100%;
  background: var(--text-dim);
  width: 0%;
  transition: width .05s linear;
}

/* ─── BORDER FRAME ─── */
.site-border {
  position: fixed; inset: 0;
  border: 1px solid rgba(232,228,220,0.06);
  pointer-events: none;
  z-index: 8000;
}

/* ─── HEADER ─── */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: 1.6rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  font-size: .7rem;
  letter-spacing: .25em;
  color: var(--text);
  text-decoration: none;
  opacity: .85;
  transition: opacity .2s;
  display: flex;
  flex-direction: column;
  gap: .15em;
  line-height: 1.4;
}
.site-logo .sub-line {
  font-size: .55rem;
  letter-spacing: .18em;
  opacity: .5;
}
.site-logo:hover { opacity: 1; }

nav { display: flex; gap: 2rem; align-items: center; }
nav a {
  font-size: .65rem;
  letter-spacing: .25em;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color .2s;
  position: relative;
}
nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 100%;
  height: 1px;
  background: var(--text);
  transition: right .25s ease;
}
nav a:hover { color: var(--text); }
nav a:hover::after { right: 0; }
nav a.active { color: var(--text); }
nav a.active::after { right: 0; }

/* Language toggle */
.lang-toggle {
  display: flex; gap: 0;
  align-items: center;
  border: 1px solid var(--border);
  overflow: hidden;
}
.lang-btn {
  font-size: .6rem;
  letter-spacing: .15em;
  color: var(--text-muted);
  background: transparent;
  border: none;
  padding: .35rem .65rem;
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  transition: color .2s, background .2s;
}
.lang-btn.active {
  background: rgba(232,228,220,0.1);
  color: var(--text);
}
.lang-btn:hover:not(.active) { color: var(--text); }
.lang-divider {
  width: 1px; height: 14px;
  background: var(--border);
  flex-shrink: 0;
}

/* i18n visibility */
[data-zh], [data-en] { display: inline; }
html[data-lang="en"] [data-zh] { display: none; }
html[data-lang="zh"] [data-en] { display: none; }

/* ─── PAGE HERO (shared by sub-pages) ─── */
.page-hero {
  padding: 14rem 2rem 6rem;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s .3s, transform .8s .3s;
}
.page-hero.visible { opacity: 1; transform: translateY(0); }

.page-hero.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: end;
}

.page-label {
  font-size: .6rem;
  letter-spacing: .35em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.page-hero h1 {
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 300;
  line-height: 1.0;
  letter-spacing: -.02em;
}
.page-hero-desc {
  max-width: 560px;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.8;
  letter-spacing: .03em;
  margin-top: 2rem;
}

.page-hero-right {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  padding-bottom: .5rem;
}
.page-hero-right p {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ─── CONTENT SECTIONS ─── */
.content-section {
  padding: 5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 3rem;
}
.section-tag {
  font-size: .6rem;
  letter-spacing: .35em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.section-count {
  font-size: .6rem;
  letter-spacing: .2em;
  color: var(--text-dim);
  font-family: 'Space Grotesk', monospace;
}

/* ─── PLACEHOLDER / COMING SOON ─── */
.placeholder-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 30vh;
  gap: 1.5rem;
  text-align: center;
}
.placeholder-content .placeholder-icon {
  font-size: 2.5rem;
  opacity: .3;
}
.placeholder-content p {
  font-size: .85rem;
  color: var(--text-dim);
  line-height: 1.7;
  max-width: 400px;
}

/* ─── CATEGORY NAVIGATION GRID ─── */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.category-card {
  background: var(--bg);
  padding: 2.5rem 2rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: background .3s;
}
.category-card:hover { background: var(--bg-secondary); }
.category-card .cat-tag {
  font-size: .55rem;
  letter-spacing: .3em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.category-card .cat-name {
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: .02em;
}
.category-card .cat-desc {
  font-size: .75rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.category-card .cat-arrow {
  font-size: .6rem;
  color: var(--text-dim);
  letter-spacing: .2em;
  margin-top: auto;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .3s, transform .3s;
}
.category-card:hover .cat-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ─── FOOTER ─── */
footer {
  margin-top: 0;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
.footer-brand .brand-name {
  font-size: .7rem; letter-spacing: .25em;
  text-transform: uppercase; color: var(--text-muted); margin-bottom: .5rem;
}
.footer-brand .brand-tagline {
  font-size: .65rem; letter-spacing: .1em;
  color: var(--text-dim); line-height: 1.6;
}
.footer-nav-col .footer-col-label {
  font-size: .55rem; letter-spacing: .35em;
  color: var(--text-dim); text-transform: uppercase; margin-bottom: 1rem;
}
.footer-nav-col ul { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.footer-nav-col a {
  font-size: .75rem; letter-spacing: .1em;
  color: var(--text-muted); text-decoration: none; transition: color .2s;
}
.footer-nav-col a:hover { color: var(--text); }
.footer-contact .footer-col-label {
  font-size: .55rem; letter-spacing: .35em;
  color: var(--text-dim); text-transform: uppercase; margin-bottom: 1rem;
}
.footer-contact a {
  font-size: .8rem; letter-spacing: .05em;
  color: var(--text-muted); text-decoration: none; transition: color .2s;
}
.footer-contact a:hover { color: var(--text); }
.footer-bottom {
  grid-column: 1/-1;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-copy {
  font-size: .55rem; letter-spacing: .25em;
  color: var(--text-dim); text-transform: uppercase;
}

/* ─── SCROLL REVEAL ─── */
.reveal-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s, transform .6s;
}
.reveal-item.visible { opacity: 1; transform: translateY(0); }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .page-hero { padding: 10rem 1.5rem 4rem; }
  .page-hero.two-col { grid-template-columns: 1fr; gap: 2rem; }
  .content-section { padding: 3rem 1.5rem; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  footer { grid-template-columns: 1fr 1fr; }
  .footer-bottom { grid-column: 1/-1; }
}
@media (max-width: 480px) {
  header { padding: 1.2rem; }
  nav { gap: 1.2rem; }
  .category-grid { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr; padding: 2rem 1.2rem; }
}