/* ============================================================
   囍er牛排馆 · SEAR STEAK — Art Deco System (deco.css)
   Shared styles for the full website redesign.
   Aesthetic: 1920s Boardwalk Empire · black + champagne gold · red punch
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: #0B0908; color: #F3EAD8; font-family: 'DM Sans','Noto Serif SC',sans-serif; overflow-x: hidden; }

:root {
  --black: #0B0908;
  --espresso: #17100B;
  --espresso-2: #1F160F;
  --gold: #C9A24B;
  --gold-deep: #9A7A30;
  --gold-pale: #E7CF8E;
  --red: #C0181A;
  --red-l: #D8312F;
  --cream: #F3EAD8;
  --warm: #B6A488;
  --muted: #6E5F4C;
  --line: rgba(201,162,75,0.30);
  --line-soft: rgba(201,162,75,0.16);
  --max: 1240px;
  --tr: 350ms cubic-bezier(.4,0,.2,1);
}

/* Vintage grain overlay */
body::after {
  content: ''; position: fixed; inset: 0; z-index: 9999; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
::selection { background: var(--gold); color: var(--black); }

/* ── TOP BAR ── */
.topbar { background: var(--black); border-bottom: 1px solid var(--line-soft); }
.topbar-inner { max-width: var(--max); margin: 0 auto; padding: 9px 40px; display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.topbar-item { font-family: 'DM Sans',sans-serif; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--warm); white-space: nowrap; }
.topbar-dia { color: var(--gold); font-size: 8px; }

/* ── NAV ── */
nav { position: sticky; top: 0; z-index: 100; background: rgba(11,9,8,0.85); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line-soft); }
.nav-inner { max-width: var(--max); margin: 0 auto; padding: 0 40px; height: 70px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: 'Cinzel',serif; font-size: 21px; font-weight: 700; letter-spacing: 0.18em; color: var(--cream); cursor: pointer; display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo .dia { color: var(--red); font-size: 13px; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-link { font-family: 'Cinzel',serif; font-size: 12px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--warm); cursor: pointer; text-decoration: none; position: relative; padding: 4px 0; transition: color var(--tr); }
.nav-link::after { content: ''; position: absolute; left: 50%; bottom: -2px; width: 0; height: 1px; background: var(--gold); transition: all var(--tr); transform: translateX(-50%); }
.nav-link:hover, .nav-link.active { color: var(--gold-pale); }
.nav-link.active::after, .nav-link:hover::after { width: 100%; }
.nav-reserve { font-family: 'Cinzel',serif; font-size: 12px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold-pale); border: 1px solid var(--line); padding: 9px 20px; cursor: pointer; background: transparent; transition: all var(--tr); text-decoration: none; }
.nav-reserve:hover { background: var(--gold); color: var(--black); border-color: var(--gold); }

/* ── BUTTONS ── */
.btn-gold { font-family: 'Cinzel',serif; font-size: 13px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; background: var(--gold); color: var(--black); border: 1px solid var(--gold); padding: 15px 34px; cursor: pointer; transition: all var(--tr); text-decoration: none; display: inline-block; }
.btn-gold:hover { background: var(--gold-pale); border-color: var(--gold-pale); }
.btn-line { font-family: 'Cinzel',serif; font-size: 13px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; background: transparent; color: var(--cream); border: 1px solid var(--line); padding: 15px 30px; cursor: pointer; transition: all var(--tr); text-decoration: none; display: inline-block; }
.btn-line:hover { border-color: var(--gold); color: var(--gold-pale); }

/* ── ORNAMENTS ── */
.dia-rule { display: flex; align-items: center; justify-content: center; gap: 12px; margin: 30px auto; max-width: 360px; }
.dia-rule .ln { flex: 1; height: 1px; background: linear-gradient(to right, transparent, var(--line)); }
.dia-rule .ln.l { background: linear-gradient(to left, transparent, var(--line)); }
.dia-rule .dia { color: var(--gold); font-size: 10px; }
.dia-rule .dia.sm { font-size: 6px; opacity: 0.7; }

/* ── SECTION HEADS ── */
.section-label { font-family: 'Cinzel',serif; font-size: 12px; font-weight: 500; letter-spacing: 0.4em; text-transform: uppercase; color: var(--gold); margin-bottom: 18px; }
.section-title { font-family: 'Cinzel',serif; font-weight: 800; font-size: clamp(30px,4vw,52px); letter-spacing: 0.04em; color: var(--cream); line-height: 1.05; }
.section-title em { font-style: normal; color: var(--gold-pale); }
.section-zh { font-family: 'Noto Serif SC',serif; font-size: clamp(14px,1.6vw,18px); font-weight: 300; letter-spacing: 0.3em; color: var(--warm); margin-top: 14px; }

/* ── PAGE HEADER (inner pages) ── */
.page-head { position: relative; padding: 88px 40px 64px; text-align: center; border-bottom: 1px solid var(--line-soft); overflow: hidden; }
.page-head-rays { position: absolute; top: 50%; left: 50%; width: 900px; height: 900px; transform: translate(-50%,-50%); opacity: 0.28; pointer-events: none;
  background: repeating-conic-gradient(from 0deg, rgba(201,162,75,0.1) 0deg 0.5deg, transparent 0.5deg 13deg);
  -webkit-mask-image: radial-gradient(circle, black 0%, transparent 60%); mask-image: radial-gradient(circle, black 0%, transparent 60%); }
.page-head-inner { position: relative; z-index: 2; }
.page-head .section-title { font-size: clamp(38px,5vw,68px); }

/* ── FOOTER ── */
footer { background: var(--black); border-top: 1px solid var(--line-soft); padding: 70px 40px 40px; }
.footer-inner { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 50px; }
.f-logo { font-family: 'Cinzel',serif; font-size: 24px; font-weight: 700; letter-spacing: 0.16em; color: var(--cream); text-decoration: none; display: inline-block; }
.f-logo .dia { color: var(--red); font-size: 14px; }
.f-zh { font-family: 'Noto Serif SC',serif; font-size: 13px; font-weight: 300; letter-spacing: 0.2em; color: var(--gold-pale); margin-top: 8px; }
.f-desc { font-family: 'Noto Serif SC',serif; font-size: 12px; font-weight: 300; line-height: 1.9; color: var(--muted); margin-top: 16px; max-width: 240px; }
.f-col-title { font-family: 'Cinzel',serif; font-size: 10px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--gold); margin-bottom: 16px; }
.f-link { display: block; font-family: 'Noto Serif SC',serif; font-size: 13px; font-weight: 300; color: var(--warm); margin-bottom: 11px; text-decoration: none; cursor: pointer; transition: color var(--tr); }
.f-link:hover { color: var(--gold-pale); }
.f-bottom { max-width: var(--max); margin: 50px auto 0; padding-top: 24px; border-top: 1px solid var(--line-soft); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.f-copy { font-family: 'DM Sans',sans-serif; font-size: 11px; letter-spacing: 0.1em; color: var(--muted); }

@media (max-width: 880px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 36px; }
  .nav-links .nav-link { display: none; }
}