/* =================================================================
   Golden Tree Bistro  ·  云深不知处 · 金小馆
   Shared stylesheet — black & gold brand system
   ================================================================= */

/* ---------- Design tokens ---------- */
:root{
  --bg:        #0b0b0c;
  --bg-2:      #121214;
  --bg-3:      #18181b;
  --panel:     #1b1b1f;

  --gold:      #d8b369;
  --gold-2:    #f1d9a0;   /* highlight */
  --gold-deep: #b08a44;
  --gold-soft: rgba(216,179,105,.14);
  --line:      rgba(216,179,105,.22);

  --cream:     #f3ecdd;
  --text:      #e7ddc9;
  --muted:     #a99e88;
  --muted-2:   #7d7565;

  --maxw: 1180px;
  --radius: 14px;
  --shadow: 0 24px 60px -24px rgba(0,0,0,.75);
  --shadow-gold: 0 18px 50px -18px rgba(216,179,105,.35);

  --ff-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --ff-serif:   "Cormorant Garamond", Georgia, serif;
  --ff-script:  "Pacifico", "Brush Script MT", cursive;
  --ff-body:    "Jost", "Segoe UI", system-ui, -apple-system, sans-serif;
  --ff-cn:      "Noto Serif SC", "PingFang SC", "Microsoft YaHei", serif;
}

/* ---------- Reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--ff-body);
  font-weight:300;
  font-size:17px;
  line-height:1.75;
  letter-spacing:.2px;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--ff-display); font-weight:700; line-height:1.12; margin:0; color:var(--cream); }
p{ margin:0 0 1em; }

/* subtle film-grain / vignette backdrop */
body::before{
  content:""; position:fixed; inset:0; pointer-events:none; z-index:0;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(216,179,105,.07), transparent 60%),
    radial-gradient(900px 600px at -10% 110%, rgba(216,179,105,.05), transparent 60%);
}
.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 24px; position:relative; z-index:1; }

/* ---------- Utilities ---------- */
.gold{ color:var(--gold); }
.gold-text{
  background:linear-gradient(105deg,var(--gold-deep),var(--gold-2) 45%,var(--gold) 80%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.eyebrow{
  font-family:var(--ff-body); font-weight:500; font-size:.78rem;
  letter-spacing:.42em; text-transform:uppercase; color:var(--gold);
  margin:0 0 14px;
}
.section{ padding:104px 0; position:relative; }
.section--tight{ padding:74px 0; }
.center{ text-align:center; }
.lead{ font-size:1.18rem; color:var(--muted); font-weight:300; }
.measure{ max-width:680px; margin-left:auto; margin-right:auto; }

.section-title{ font-size:clamp(2rem,4.4vw,3.25rem); letter-spacing:.5px; }
.section-title .cn{ font-family:var(--ff-cn); font-weight:600; }

/* Ornamental divider: line — ❖ — line */
.ornament{ display:flex; align-items:center; justify-content:center; gap:16px; margin:18px 0 30px; }
.ornament span{ height:1px; width:70px; background:linear-gradient(90deg,transparent,var(--gold)); }
.ornament span:last-child{ background:linear-gradient(90deg,var(--gold),transparent); }
.ornament i{ color:var(--gold); font-style:normal; font-size:.7rem; transform:rotate(45deg); }

/* ---------- Buttons ---------- */
.btn{
  --pad:15px 32px;
  display:inline-flex; align-items:center; gap:10px; cursor:pointer;
  padding:var(--pad); border-radius:999px; font-family:var(--ff-body);
  font-weight:500; font-size:.82rem; letter-spacing:.22em; text-transform:uppercase;
  border:1px solid transparent; transition:.35s cubic-bezier(.2,.7,.3,1); white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(105deg,var(--gold-deep),var(--gold) 55%,var(--gold-2));
  color:#1a1408; box-shadow:var(--shadow-gold);
}
.btn-primary:hover{ transform:translateY(-3px); filter:brightness(1.06); }
.btn-ghost{ border-color:var(--line); color:var(--cream); }
.btn-ghost:hover{ border-color:var(--gold); color:var(--gold); background:var(--gold-soft); transform:translateY(-3px); }
.btn-sm{ --pad:11px 22px; font-size:.74rem; }

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed; inset:0 0 auto 0; z-index:50;
  padding:20px 0; transition:.4s ease;
  background:transparent;
}
.site-header.scrolled{
  background:rgba(10,10,11,.86); backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line); padding:12px 0;
}
.nav{ display:flex; align-items:center; justify-content:space-between; gap:24px; }
.nav-links{ display:flex; align-items:center; gap:34px; }
.nav-links a{
  font-size:.8rem; letter-spacing:.16em; text-transform:uppercase; color:var(--text);
  position:relative; padding:6px 0; transition:color .3s; font-weight:400;
}
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:0;
  background:var(--gold); transition:width .35s ease;
}
.nav-links a:hover{ color:var(--gold); }
.nav-links a:hover::after,.nav-links a.active::after{ width:100%; }
.nav-links a.active{ color:var(--gold); }
.nav-cta{ display:flex; align-items:center; gap:14px; }

/* Brand lockup (recreated gold wordmark) */
.brand{ display:inline-flex; flex-direction:column; align-items:center; line-height:1; }
.brand-script{
  font-family:var(--ff-script); color:var(--gold);
  font-size:1.55rem; letter-spacing:.5px; text-shadow:0 1px 0 rgba(0,0,0,.4);
}
.brand-sub{
  display:flex; align-items:center; gap:8px; margin-top:4px;
  font-family:var(--ff-cn); color:var(--gold); font-size:.62rem; letter-spacing:.18em; opacity:.92;
}
.brand-sub::before,.brand-sub::after{ content:""; width:18px; height:1px; background:var(--gold); opacity:.6; }
.brand-lg .brand-script{ font-size:clamp(2.6rem,7vw,4.6rem); line-height:1.08; }
.brand-lg .brand-sub{ font-size:clamp(.8rem,2.4vw,1.05rem); letter-spacing:.28em; margin-top:12px; }
.brand-lg .brand-sub::before,.brand-lg .brand-sub::after{ width:42px; }

/* Hamburger */
.nav-toggle{ display:none; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span{ display:block; width:26px; height:2px; background:var(--gold); margin:5px 0; transition:.3s; }

/* ---------- Hero ---------- */
.hero{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  text-align:center; position:relative; overflow:hidden;
  padding:140px 0 90px;
  background:
    radial-gradient(120% 90% at 50% 0%, #1a160d 0%, var(--bg) 55%);
}
.hero::after{ /* subtle ring motif echoing the logo loop */
  content:""; position:absolute; width:min(78vw,720px); aspect-ratio:1; border-radius:50%;
  border:1px solid var(--line); top:50%; left:50%; transform:translate(-50%,-58%);
  box-shadow:0 0 120px rgba(216,179,105,.06) inset; pointer-events:none;
}
.hero .container{ max-width:880px; }
.hero-tag{ margin:26px 0 8px; font-family:var(--ff-serif); font-style:italic; font-size:clamp(1.2rem,3vw,1.7rem); color:var(--cream); }
.hero-desc{ color:var(--muted); max-width:560px; margin:0 auto 36px; }
.hero-cta{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.scroll-cue{ position:absolute; bottom:28px; left:50%; transform:translateX(-50%); color:var(--muted-2); font-size:.7rem; letter-spacing:.3em; text-transform:uppercase; }
.scroll-cue::after{ content:""; display:block; width:1px; height:34px; margin:10px auto 0; background:linear-gradient(var(--gold),transparent); animation:cue 2s ease-in-out infinite; }
@keyframes cue{ 0%,100%{opacity:.3;transform:scaleY(.6)} 50%{opacity:1;transform:scaleY(1)} }

/* ---------- Page banner (interior pages) ---------- */
.page-banner{
  padding:190px 0 70px; text-align:center; position:relative;
  background:radial-gradient(120% 100% at 50% 0%, #17140c, var(--bg) 60%);
  border-bottom:1px solid var(--line);
}
.page-banner h1{ font-size:clamp(2.4rem,6vw,4rem); }
.page-banner .crumb{ color:var(--muted-2); font-size:.78rem; letter-spacing:.24em; text-transform:uppercase; margin-top:14px; }
.page-banner .crumb a:hover{ color:var(--gold); }

/* ---------- Generic grid ---------- */
.grid{ display:grid; gap:26px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }

/* ---------- Dish card ---------- */
.card{
  background:linear-gradient(180deg,var(--bg-2),var(--bg-3));
  border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
  transition:.4s cubic-bezier(.2,.7,.3,1); position:relative;
}
.card:hover{ transform:translateY(-8px); border-color:var(--gold); box-shadow:var(--shadow); }
.card .thumb{ aspect-ratio:4/3; position:relative; display:flex; align-items:center; justify-content:center; }
.card .thumb svg{ width:46%; height:46%; opacity:.9; }
.card .body{ padding:24px 24px 28px; }
.card h3{ font-size:1.4rem; margin-bottom:6px; }
.card h3 .cn{ font-family:var(--ff-cn); font-size:.95rem; color:var(--gold); display:block; font-weight:600; margin-top:2px; }
.card p{ color:var(--muted); font-size:.96rem; margin:0; }

/* Branded "photo" panels (swap for real images) */
.photo{
  position:relative; background:linear-gradient(135deg,#1d1810,#0e0d0b 70%);
  display:flex; align-items:center; justify-content:center;
}
.photo::before{ content:""; position:absolute; inset:0; background:radial-gradient(80% 80% at 50% 30%, rgba(216,179,105,.16), transparent 70%); }
.photo svg{ position:relative; color:var(--gold); opacity:.85; }

/* ---------- Highlights / features ---------- */
.feature{ text-align:center; padding:14px; }
.feature .ico{ width:58px; height:58px; margin:0 auto 18px; color:var(--gold); }
.feature h3{ font-size:1.25rem; margin-bottom:8px; }
.feature p{ color:var(--muted); font-size:.96rem; }

/* ---------- Info strip (hours/location) ---------- */
.strip{ background:linear-gradient(180deg,var(--bg-2),var(--bg)); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.strip .grid-3{ gap:0; }
.strip .cell{ padding:48px 30px; text-align:center; border-right:1px solid var(--line); }
.strip .cell:last-child{ border-right:0; }
.strip .ico{ width:40px; height:40px; margin:0 auto 16px; color:var(--gold); }
.strip h4{ font-family:var(--ff-body); font-weight:500; letter-spacing:.18em; text-transform:uppercase; font-size:.78rem; color:var(--gold); margin-bottom:10px; }
.strip p{ margin:0; color:var(--cream); }

/* ---------- CTA band ---------- */
.cta-band{ text-align:center; background:radial-gradient(120% 130% at 50% 0%, #19140b, var(--bg)); }
.cta-band h2{ font-size:clamp(2rem,5vw,3rem); margin-bottom:10px; }
.cta-band p{ color:var(--muted); max-width:520px; margin:0 auto 30px; }

/* ---------- Menu page ---------- */
.menu-intro{ text-align:center; color:var(--muted); max-width:620px; margin:0 auto; }
.menu-cat{ margin-top:72px; }
.menu-cat:first-of-type{ margin-top:40px; }
.menu-cat-head{ text-align:center; margin-bottom:38px; }
.menu-cat-head h2{ font-size:clamp(1.7rem,3.6vw,2.4rem); }
.menu-cat-head .cn{ font-family:var(--ff-cn); color:var(--gold); font-weight:600; }
.menu-cat-desc{ max-width:560px; margin:-12px auto 0; color:var(--muted); font-size:.96rem; line-height:1.55; }
.menu-list{ display:grid; grid-template-columns:1fr 1fr; gap:14px 56px; }
.menu-item{ padding:18px 0; border-bottom:1px dashed var(--line); }
.menu-item .row{ display:flex; align-items:baseline; gap:12px; }
.menu-item .name{ font-family:var(--ff-display); font-weight:600; font-size:1.18rem; color:var(--cream); }
.menu-item .name .cn{ font-family:var(--ff-cn); font-size:.92rem; color:var(--gold); font-weight:600; margin-left:8px; }
.menu-item .dots{ flex:1; border-bottom:1px dotted var(--muted-2); transform:translateY(-5px); opacity:.5; }
.menu-item .price{ font-family:var(--ff-serif); font-size:1.2rem; color:var(--gold); font-weight:600; }
.menu-item p{ color:var(--muted); font-size:.92rem; margin:6px 0 0; }
.menu-item .tag{ font-size:.62rem; letter-spacing:.14em; text-transform:uppercase; color:var(--gold-deep); border:1px solid var(--line); border-radius:999px; padding:2px 9px; margin-left:8px; vertical-align:middle; }
.menu-note{ text-align:center; color:var(--muted-2); font-size:.85rem; margin-top:60px; font-style:italic; }

/* ---------- About ---------- */
.about-split{ display:grid; grid-template-columns:1.1fr .9fr; gap:60px; align-items:center; }
.about-split .photo{ border-radius:var(--radius); min-height:440px; border:1px solid var(--line); }
.poem{ font-family:var(--ff-cn); font-size:1.4rem; line-height:2.1; color:var(--gold-2); text-align:center; margin:10px 0; }
.poem-trans{ font-family:var(--ff-serif); font-style:italic; font-size:1.15rem; color:var(--muted); text-align:center; }
.values{ margin-top:24px; }

/* ---------- Gallery ---------- */
.gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.gallery .tile{ position:relative; border-radius:12px; overflow:hidden; border:1px solid var(--line); cursor:pointer; aspect-ratio:1; }
.gallery .tile.tall{ aspect-ratio:1/1.4; }
.gallery .tile.wide{ grid-column:span 2; aspect-ratio:auto; }
.gallery .tile .photo{ position:absolute; inset:0; }
.gallery .tile figcaption{
  position:absolute; inset:auto 0 0 0; padding:30px 18px 16px; z-index:2;
  background:linear-gradient(transparent,rgba(0,0,0,.82)); color:var(--cream);
  font-family:var(--ff-display); font-size:1.05rem; letter-spacing:.3px;
  transform:translateY(8px); opacity:.85; transition:.4s;
}
.gallery .tile:hover figcaption{ transform:translateY(0); opacity:1; }
.gallery .tile:hover .photo{ filter:brightness(1.15); }
.gallery .tile .cn{ display:block; font-family:var(--ff-cn); font-size:.8rem; color:var(--gold); }

/* Lightbox */
.lightbox{ position:fixed; inset:0; z-index:200; display:none; align-items:center; justify-content:center; background:rgba(5,5,6,.92); backdrop-filter:blur(6px); padding:30px; }
.lightbox.open{ display:flex; }
.lightbox .frame{ max-width:720px; width:100%; border:1px solid var(--gold); border-radius:14px; overflow:hidden; background:var(--bg-2); }
.lightbox .frame .photo{ aspect-ratio:3/2; }
.lightbox .cap{ padding:18px 22px; text-align:center; font-family:var(--ff-display); font-size:1.2rem; color:var(--cream); }
.lightbox .cap .cn{ color:var(--gold); font-family:var(--ff-cn); }
.lightbox .close{ position:absolute; top:24px; right:30px; color:var(--gold); font-size:2rem; cursor:pointer; line-height:1; background:none; border:0; }

/* ---------- Contact / form ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:54px; align-items:start; }
.form{ background:linear-gradient(180deg,var(--bg-2),var(--bg-3)); border:1px solid var(--line); border-radius:var(--radius); padding:36px; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:.74rem; letter-spacing:.18em; text-transform:uppercase; color:var(--gold); margin-bottom:8px; }
.field input,.field select,.field textarea{
  width:100%; background:var(--bg); border:1px solid var(--line); border-radius:10px;
  padding:13px 15px; color:var(--cream); font-family:var(--ff-body); font-size:.98rem; transition:.3s;
}
.field input:focus,.field select:focus,.field textarea:focus{ outline:none; border-color:var(--gold); box-shadow:0 0 0 3px var(--gold-soft); }
.field textarea{ resize:vertical; min-height:110px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.form .btn{ width:100%; justify-content:center; margin-top:6px; }
.form-msg{ display:none; margin-top:18px; padding:14px 16px; border-radius:10px; background:var(--gold-soft); border:1px solid var(--gold); color:var(--gold-2); font-size:.95rem; }
.form-msg.show{ display:block; }

.info-card{ border:1px solid var(--line); border-radius:var(--radius); padding:30px 32px; background:linear-gradient(180deg,var(--bg-2),var(--bg)); margin-bottom:22px; }
.info-card h3{ font-size:1.35rem; margin-bottom:18px; }
.info-row{ display:flex; gap:16px; align-items:flex-start; padding:12px 0; border-bottom:1px solid var(--line); }
.info-row:last-child{ border-bottom:0; }
.info-row .ico{ width:22px; height:22px; color:var(--gold); flex-shrink:0; margin-top:4px; }
.info-row .label{ font-size:.72rem; letter-spacing:.16em; text-transform:uppercase; color:var(--muted-2); }
.info-row .val{ color:var(--cream); }
.info-row a:hover{ color:var(--gold); }

.hours-table{ width:100%; border-collapse:collapse; }
.hours-table td{ padding:11px 0; border-bottom:1px solid var(--line); color:var(--cream); }
.hours-table td:last-child{ text-align:right; color:var(--gold); }
.hours-table tr:last-child td{ border-bottom:0; }
.badge-open{ display:inline-flex; align-items:center; gap:8px; font-size:.78rem; letter-spacing:.12em; text-transform:uppercase; color:#7fd68b; }
.badge-open::before{ content:""; width:8px; height:8px; border-radius:50%; background:#7fd68b; box-shadow:0 0 0 4px rgba(127,214,139,.18); }

.map-wrap{ margin-top:8px; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.map-wrap iframe{ width:100%; height:360px; border:0; display:block; filter:grayscale(.3) contrast(1.05); }

/* ---------- Footer ---------- */
.site-footer{ background:#08080a; border-top:1px solid var(--line); padding:70px 0 30px; position:relative; z-index:1; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; }
.footer-brand p{ color:var(--muted); font-size:.95rem; margin-top:20px; max-width:300px; }
.site-footer h4{ font-family:var(--ff-body); font-weight:500; letter-spacing:.2em; text-transform:uppercase; font-size:.76rem; color:var(--gold); margin-bottom:18px; }
.site-footer li{ margin-bottom:11px; }
.site-footer a{ color:var(--muted); font-size:.95rem; transition:color .3s; }
.site-footer a:hover{ color:var(--gold); }
.socials{ display:flex; gap:14px; margin-top:8px; }
.socials a{ width:40px; height:40px; border:1px solid var(--line); border-radius:50%; display:flex; align-items:center; justify-content:center; color:var(--gold); transition:.3s; }
.socials a:hover{ background:var(--gold-soft); border-color:var(--gold); transform:translateY(-3px); }
.socials svg{ width:18px; height:18px; }
.footer-bottom{ margin-top:54px; padding-top:24px; border-top:1px solid var(--line); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; color:var(--muted-2); font-size:.84rem; }

/* ---------- Reveal animation ---------- */
[data-reveal]{ opacity:0; transform:translateY(26px); transition:opacity .8s ease, transform .8s cubic-bezier(.2,.7,.3,1); }
[data-reveal].is-visible{ opacity:1; transform:none; }
[data-reveal][data-delay="1"]{ transition-delay:.12s; }
[data-reveal][data-delay="2"]{ transition-delay:.24s; }
[data-reveal][data-delay="3"]{ transition-delay:.36s; }

/* ---------- Hero logo (homepage) ---------- */
.hero-logo{
  display:block;
  width:min(90%, 540px);
  height:auto;
  margin:0 auto 8px;
  /* The logo's background is transparent, so the hero's radial gradient
     shows through behind the wordmark — no box, fully harmonized. */
}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .grid-3,.grid-4{ grid-template-columns:repeat(2,1fr); }
  .about-split,.contact-grid{ grid-template-columns:1fr; gap:36px; }
  .menu-list{ grid-template-columns:1fr; gap:0 0; }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:30px; }
  .gallery{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:760px){
  body{ font-size:16px; }
  .section{ padding:74px 0; }
  .strip .grid-3{ grid-template-columns:1fr; }
  .strip .cell{ border-right:0; border-bottom:1px solid var(--line); }
  .strip .cell:last-child{ border-bottom:0; }
  .nav-links{
    position:fixed; inset:0 0 0 auto; width:min(80vw,320px); flex-direction:column;
    align-items:flex-start; justify-content:center; gap:26px; padding:40px;
    background:rgba(9,9,11,.98); backdrop-filter:blur(14px); border-left:1px solid var(--line);
    transform:translateX(100%); transition:transform .4s cubic-bezier(.2,.7,.3,1); z-index:60;
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-links a{ font-size:1.05rem; }
  .nav-toggle{ display:block; z-index:70; }
  .nav-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2){ opacity:0; }
  .nav-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
  .nav-cta .btn{ display:none; }
  .grid-3,.grid-4,.grid-2{ grid-template-columns:1fr; }
  .field-row{ grid-template-columns:1fr; gap:0; }
  .footer-grid{ grid-template-columns:1fr; }
  .gallery{ grid-template-columns:1fr; }
  .gallery .tile.wide{ grid-column:span 1; }
  .hero-logo{ width:min(86vw, 420px); }
}