/* ═══════════════════════════════════════════════
   星光珠寶 · Common Shared Styles
   ═══════════════════════════════════════════════ */

:root {
  --gold:        #C9A96E;
  --gold-light:  #E8C98A;
  --gold-dark:   #A07840;
  --gold-pale:   #F5ECD7;
  --black:       #0A0A0A;
  --dark:        #111111;
  --dark2:       #1A1A1A;
  --dark3:       #222222;
  --mid:         #3A3A3A;
  --grey:        #888888;
  --light-grey:  #CCCCCC;
  --white:       #FFFFFF;
  --off-white:   #F8F4EE;
  --cream:       #FDF9F3;

  --font-serif:   'Playfair Display', 'Noto Serif TC', serif;
  --font-body:    'Noto Serif TC', serif;
  --font-display: 'Cormorant Garamond', 'Playfair Display', serif;

  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  --shadow-gold: 0 4px 24px rgba(201,169,110,0.25);
  --radius: 2px;
  --text-muted:  #888888;
  --border: rgba(201,169,110,0.15);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--black);
  color: var(--off-white);
  font-family: var(--font-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--gold-dark); border-radius: 3px; }
::selection { background: var(--gold); color: var(--black); }

/* ── NAVBAR ── */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000; padding: 0 2rem;
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(10,10,10,0.96);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 24px rgba(0,0,0,0.5);
}
.nav-inner {
  max-width: 1320px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
}
.nav-logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.25rem; font-weight: 500; letter-spacing: 0.15em;
  color: var(--gold-light); transition: color var(--transition);
}
.nav-logo:hover { color: var(--white); }
.logo-star {
  font-size: 0.7em; color: var(--gold);
  animation: twinkle 2.4s ease-in-out infinite;
}
.logo-star:last-child { animation-delay: 1.2s; }
@keyframes twinkle {
  0%,100% { opacity:1; transform:scale(1); }
  50% { opacity:.5; transform:scale(.8); }
}
.nav-links {
  display: flex; gap: 2rem; align-items: center;
}
.nav-links a {
  font-size: 0.82rem; letter-spacing: 0.18em; color: var(--light-grey);
  position: relative; transition: color var(--transition);
}
.nav-links a::after {
  content:''; position:absolute; bottom:-4px; left:0;
  width:0; height:1px; background:var(--gold);
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.nav-active { color: var(--gold-light); }
.nav-links a:hover::after,
.nav-links a.nav-active::after { width: 100%; }
.nav-toggle {
  display: none; background: none; border: none;
  color: var(--gold-light); font-size: 1.3rem; cursor: pointer; padding: .5rem;
}

/* ── PAGE HERO BANNER ── */
.page-hero {
  min-height: 340px;
  padding: 160px 2rem 80px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  background:
    radial-gradient(ellipse 70% 60% at 50% 60%, rgba(201,169,110,0.09) 0%, transparent 70%),
    linear-gradient(160deg, #0A0A0A 0%, #1A1208 50%, #0A0A0A 100%);
  border-bottom: 1px solid rgba(201,169,110,0.12);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content:'';
  position:absolute; inset:0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(201,169,110,.6) 0%, transparent 100%),
    radial-gradient(1px 1px at 70% 20%, rgba(255,255,255,.4) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 45% 65%, rgba(201,169,110,.5) 0%, transparent 100%),
    radial-gradient(1px 1px at 80% 55%, rgba(255,255,255,.35) 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 80%, rgba(201,169,110,.45) 0%, transparent 100%),
    radial-gradient(1.5px 1.5px at 60% 35%, rgba(255,255,255,.5) 0%, transparent 100%);
  animation: starfield 8s linear infinite;
}
@keyframes starfield { 0%,100%{opacity:.6} 50%{opacity:1} }
.page-hero-eyebrow {
  font-size: .68rem; letter-spacing: .5em; color: var(--gold);
  text-transform: uppercase; margin-bottom: .6rem; position: relative;
}
.page-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 400; letter-spacing: .18em; color: var(--white);
  line-height: 1.2; position: relative;
}
.page-hero-sub {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(.9rem, 1.5vw, 1.1rem);
  color: var(--gold-light); letter-spacing: .15em;
  margin-top: .8rem; position: relative;
}
.page-hero-rule {
  display: flex; align-items: center; gap: 1rem; width: 180px; margin-top: 1.2rem;
  position: relative;
}
.page-hero-rule span:first-child,
.page-hero-rule span:last-child {
  flex:1; height:1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
}
.page-hero-rule .ddot { color: var(--gold); font-size: .5rem; }

/* ── CONTAINER ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* ── SECTION SHARED ── */
.section-eyebrow {
  font-size: .68rem; letter-spacing: .5em; color: var(--gold);
  text-transform: uppercase; margin-bottom: .8rem;
}
.section-eyebrow.center { text-align: center; }
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 400; letter-spacing: .12em; color: var(--white); line-height: 1.2;
}
.section-title.center { text-align: center; }
.section-rule {
  width: 60px; height: 1px;
  background: linear-gradient(to right, transparent, var(--gold), transparent);
  margin: 1.1rem 0;
}
.section-rule.center { margin: 1.1rem auto; width: 120px; }
.section-lead {
  font-size: 1rem; color: var(--light-grey); max-width: 640px; line-height: 1.9;
}
.section-lead.center { text-align: center; margin: 0 auto; }

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  padding: .85em 2.6em;
  background: var(--gold); color: var(--black);
  font-family: var(--font-body); font-size: .8rem; letter-spacing: .3em;
  text-transform: uppercase; border: none; cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-primary:hover { background: var(--gold-light); box-shadow: 0 6px 24px rgba(201,169,110,.4); transform: translateY(-2px); }
.btn-outline {
  display: inline-block; padding: .85em 2.6em;
  border: 1px solid var(--gold); color: var(--gold-light);
  font-size: .8rem; letter-spacing: .3em; text-transform: uppercase;
  transition: all var(--transition);
}
.btn-outline:hover { background: var(--gold); color: var(--black); }

/* ── FOOTER ── */
.site-footer { background: var(--black); border-top: 1px solid rgba(201,169,110,.12); }
.footer-inner {
  max-width: 1200px; margin: 0 auto; padding: 4rem 2rem 3rem;
  display: grid; grid-template-columns: 1.5fr 1fr 1.5fr; gap: 3rem;
}
.footer-logo {
  font-family: var(--font-serif); font-size: 1.4rem; font-weight: 400;
  letter-spacing: .2em; color: var(--gold-light);
  display: flex; align-items: center; gap: .5rem; margin-bottom: .8rem;
}
.footer-tagline { font-size: .78rem; letter-spacing: .12em; color: var(--grey); line-height: 1.8; }
.footer-links h4, .footer-social h4 {
  font-size: .68rem; letter-spacing: .3em; color: var(--gold);
  text-transform: uppercase; margin-bottom: 1rem;
}
.footer-links ul { display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { font-size: .85rem; color: var(--grey); letter-spacing: .08em; transition: color var(--transition); }
.footer-links a:hover { color: var(--gold-light); }
.social-icons { display: flex; gap: .8rem; margin-bottom: 1rem; }
.social-icons a {
  width: 38px; height: 38px;
  border: 1px solid rgba(201,169,110,.3); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--grey); font-size: .95rem; transition: all var(--transition);
}
.social-icons a:hover { background: var(--gold); border-color: var(--gold); color: var(--black); transform: translateY(-3px); }
.footer-address { font-size: .78rem; color: var(--grey); line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 1.5rem 2rem;
  display: flex; justify-content: space-between; align-items: center;
  max-width: 1200px; margin: 0 auto;
}
.footer-bottom p { font-size: .72rem; letter-spacing: .1em; color: var(--grey); }
.footer-motto { font-family: var(--font-display); font-style: italic; color: rgba(201,169,110,.5) !important; }

/* ── REVEAL ANIMATION ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1/-1; }
}
@media (max-width: 680px) {
  .nav-links {
    display: none; position: fixed; top: 80px; left: 0; right: 0;
    background: rgba(10,10,10,.98); flex-direction: column; gap: 0;
    border-top: 1px solid rgba(201,169,110,.15); padding: 1rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-bottom: 1px solid rgba(255,255,255,.04); }
  .nav-links a { display: block; padding: 1rem 2rem; font-size: .9rem; }
  .nav-toggle { display: block; }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: .5rem; text-align: center; }
}