/* =====================================================================
   GRANDIQUE — Global Frame (v2)
   ---------------------------------------------------------------------
   New chrome layered on top of main.css:
     · Giorgetti-style header (centered wordmark, MENU left, utilities right)
     · Full-screen mega menu with 2-level furniture categories
     · Letter-style ("信函") region / language selector
     · Draggable galleries with inertia
     · Damped smooth-scroll wrapper
   Uses the existing design tokens from main.css (colors / type / spacing).
   ===================================================================== */

/* ---------------------------------------------------------------------
   0 · Damped smooth scroll
   wrapper is fixed; JS sets body height and translates the content.
   Disabled automatically on touch / reduced-motion (.no-smooth on <html>).
   ------------------------------------------------------------------- */
/* body height is set by JS so the native scrollbar drives the lerp */
html.has-smooth { scroll-behavior: auto; }
html.gm-lock, html.gm-lock body { overflow: hidden; }
#smooth-wrapper {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  min-height: 100vh;
  will-change: transform;
}
html.no-smooth #smooth-wrapper,
html:not(.has-smooth) #smooth-wrapper {
  position: static;
  width: auto;
  will-change: auto;
}

/* ---------------------------------------------------------------------
   1 · Header
   ------------------------------------------------------------------- */
.gm-header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 80;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-md);
  padding: 22px var(--container-pad);
  color: var(--color-ink);
  transition: background var(--dur-med) var(--ease),
              color var(--dur-med) var(--ease),
              padding var(--dur-med) var(--ease),
              border-color var(--dur-med) var(--ease);
  border-bottom: 1px solid transparent;
}
/* transparent over a dark hero */
.gm-header.over-hero { color: var(--color-bg); }
/* solid after scroll */
.gm-header.is-scrolled {
  background: rgba(255, 241, 229, 0.92);
  -webkit-backdrop-filter: saturate(120%) blur(10px);
  backdrop-filter: saturate(120%) blur(10px);
  color: var(--color-ink);
  padding-top: 16px;
  padding-bottom: 16px;
  border-bottom-color: var(--color-line-soft);
}

/* left + right clusters */
.gm-header__left  { justify-self: start; }
.gm-header__right { justify-self: end; display: flex; align-items: center; gap: var(--space-md); }

/* trigger buttons (MENU / language) */
.gm-trigger {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: inherit;
  position: relative;
}
.gm-trigger .lines { display: inline-flex; flex-direction: column; gap: 4px; width: 22px; }
.gm-trigger .lines i { height: 1px; width: 100%; background: currentColor; transition: transform var(--dur-fast) var(--ease); display: block; }
.gm-trigger:hover .lines i:first-child { transform: translateY(1px); }
.gm-trigger:hover .lines i:last-child  { transform: translateY(-1px); }
.gm-trigger .globe { width: 15px; height: 15px; stroke: currentColor; fill: none; }
.gm-trigger__label--hide-sm { display: inline; }

/* centered wordmark */
.gm-brand {
  justify-self: center;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: 0.34em;
  padding-left: 0.34em;
  color: inherit;
  line-height: 1;
  white-space: nowrap;
}

/* concierge mini-link in header right */
.gm-header__concierge {
  font-family: var(--font-sans);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: inherit;
  position: relative;
}
.gm-header__concierge::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 1px; width: 0;
  background: var(--color-brass); transition: width var(--dur-med) var(--ease);
}
.gm-header__concierge:hover::after { width: 100%; }

/* ---------------------------------------------------------------------
   2 · Overlay base (shared by menu + language letter)
   ------------------------------------------------------------------- */
.gm-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: var(--color-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-med) var(--ease), visibility var(--dur-med);
  overflow-y: auto;
}
.gm-overlay.is-open { opacity: 1; visibility: visible; }
.gm-overlay__close {
  position: fixed;
  top: 20px; right: var(--container-pad);
  z-index: 95;
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-sans); font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-ink);
}
.gm-overlay__close .x { font-size: 20px; line-height: 1; }
.gm-overlay__inner {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: clamp(96px, 12vh, 160px) var(--container-pad) var(--space-xl);
  max-width: var(--container-max);
  margin: 0 auto;
}
/* gentle stagger when opening */
.gm-overlay .stagger > * { opacity: 0; transform: translateY(18px); transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease); }
.gm-overlay.is-open .stagger > * { opacity: 1; transform: none; }
.gm-overlay.is-open .stagger > *:nth-child(2) { transition-delay: 70ms; }
.gm-overlay.is-open .stagger > *:nth-child(3) { transition-delay: 140ms; }
.gm-overlay.is-open .stagger > *:nth-child(4) { transition-delay: 210ms; }
.gm-overlay.is-open .stagger > *:nth-child(5) { transition-delay: 280ms; }

/* ---------------------------------------------------------------------
   3 · Mega menu
   ------------------------------------------------------------------- */
.gm-menu__grid {
  display: grid;
  grid-template-columns: 0.9fr 1.6fr;
  gap: clamp(40px, 6vw, 120px);
  flex: 1;
}
.gm-menu__eyebrow { display: block; margin-bottom: var(--space-md); }
.gm-menu__primary { display: flex; flex-direction: column; gap: 8px; }
.gm-menu__primary a {
  font-family: var(--font-display);
  font-size: clamp(34px, 4.6vw, 64px);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-ink);
  width: max-content;
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-med) var(--ease);
}
.gm-menu__primary a:hover { color: var(--color-brass-deep); padding-left: 14px; }

/* categories (collections) */
.gm-menu__cats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(28px, 3vw, 56px) clamp(28px, 4vw, 64px);
}
.gm-cat__title {
  font-family: var(--font-serif);
  font-size: var(--fs-h3);
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-line);
}
.gm-cat__list { display: flex; flex-direction: column; gap: 12px; }
.gm-cat__list a {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  color: var(--color-ink-soft);
  letter-spacing: var(--tracking-text);
  width: max-content;
  position: relative;
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-med) var(--ease);
}
.gm-cat__list a:hover { color: var(--color-ink); padding-left: 12px; }
.gm-cat__list a::before {
  content: ""; position: absolute; left: 0; top: 50%;
  width: 0; height: 1px; background: var(--color-brass);
  transition: width var(--dur-med) var(--ease);
}
.gm-cat__list a:hover::before { width: 7px; }

/* menu footer */
.gm-menu__foot {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-md);
  color: var(--color-ink-mute);
  font-size: var(--fs-body);
}
.gm-menu__foot a { color: var(--color-ink-soft); }
.gm-menu__foot a:hover { color: var(--color-brass-deep); }

/* ---------------------------------------------------------------------
   4 · Language letter (信函)
   ------------------------------------------------------------------- */
.gm-letter { background: var(--color-bg); }
.gm-letter__sheet {
  width: min(760px, 100%);
  margin: 0 auto;
  background:
    linear-gradient(var(--color-line-soft), var(--color-line-soft)) left 0 top 0 / 100% 1px no-repeat,
    var(--color-surface);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-soft);
  padding: clamp(36px, 5vw, 72px);
  position: relative;
}
.gm-letter__head { display: flex; justify-content: space-between; align-items: baseline; padding-bottom: var(--space-md); border-bottom: 1px solid var(--color-line); }
.gm-letter__mark { font-family: var(--font-display); font-size: 26px; letter-spacing: 0.3em; padding-left: 0.3em; color: var(--color-ink); }
.gm-letter__date { font-family: var(--font-sans); font-size: var(--fs-eyebrow); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--color-ink-mute); }
.gm-letter__salute { font-family: var(--font-serif); font-size: var(--fs-h3); color: var(--color-ink); margin: var(--space-lg) 0 var(--space-2xs); }
.gm-letter__intro { font-family: var(--font-display); font-size: var(--fs-body-lg); font-style: italic; color: var(--color-ink-soft); margin-bottom: var(--space-lg); }

.gm-letter__regions { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg) var(--space-xl); }
.gm-region__name {
  font-family: var(--font-sans); font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-brass-deep); margin-bottom: var(--space-sm);
  padding-bottom: 8px; border-bottom: 1px solid var(--color-line-soft);
}
.gm-region__langs { display: flex; flex-direction: column; gap: 10px; }
.gm-lang-opt {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--font-serif); font-size: var(--fs-body-lg);
  color: var(--color-ink); width: max-content; text-align: left;
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-med) var(--ease);
}
.gm-lang-opt:hover { color: var(--color-brass-deep); padding-left: 10px; }
.gm-lang-opt .native { color: var(--color-ink-mute); font-family: var(--font-sans); font-size: var(--fs-eyebrow); letter-spacing: var(--tracking-text); }
.gm-lang-opt.is-current { color: var(--color-brass-deep); }
.gm-lang-opt.is-current::after { content: "—"; color: var(--color-brass); margin-left: 6px; }
.gm-letter__signoff { margin-top: var(--space-xl); padding-top: var(--space-md); border-top: 1px solid var(--color-line); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-sm); }
.gm-letter__signoff .line { font-family: var(--font-display); font-style: italic; font-size: var(--fs-body-lg); color: var(--color-ink-soft); }
.gm-letter__signoff .sign { font-family: var(--font-display); font-size: 22px; letter-spacing: 0.18em; color: var(--color-ink); }

/* ---------------------------------------------------------------------
   5 · Draggable gallery with inertia
   ------------------------------------------------------------------- */
.drag-gallery {
  overflow-x: auto;
  overflow-y: hidden;
  -ms-overflow-style: none;
  scrollbar-width: none;
  cursor: grab;
  -webkit-overflow-scrolling: touch;
}
.drag-gallery::-webkit-scrollbar { display: none; }
.drag-gallery.is-dragging { cursor: grabbing; }
.drag-gallery.is-dragging a { pointer-events: none; }
.drag-track {
  display: flex;
  gap: var(--gutter);
  padding: 4px var(--container-pad);
  width: max-content;
}
.drag-item { width: clamp(260px, 30vw, 420px); flex: 0 0 auto; }
.drag-item .card__media { aspect-ratio: 4 / 5; }
.drag-hint {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-sans); font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-ink-mute); margin-left: var(--container-pad);
}
.drag-hint .track { width: 40px; height: 1px; background: var(--color-line); position: relative; overflow: hidden; }
.drag-hint .track::after { content: ""; position: absolute; left: -40%; top: 0; width: 40%; height: 100%; background: var(--color-brass); animation: dragHint 2.6s var(--ease) infinite; }
@keyframes dragHint { 0% { left: -40%; } 60%,100% { left: 100%; } }

/* ---------------------------------------------------------------------
   6 · Concierge section (Design Concierge / contact)
   ------------------------------------------------------------------- */
.concierge__grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(40px, 6vw, 96px); align-items: start; }
.concierge__channels { display: flex; flex-direction: column; gap: var(--space-md); margin-top: var(--space-lg); }
.channel { display: flex; gap: var(--space-md); align-items: flex-start; padding-bottom: var(--space-md); border-bottom: 1px solid var(--color-line-soft); }
.channel__qr {
  width: 116px; height: 116px; flex: 0 0 auto;
  background: var(--color-surface-deep);
  border: 1px solid var(--color-line);
  display: flex; align-items: center; justify-content: center; text-align: center;
  font-family: var(--font-sans); font-size: 11px; letter-spacing: 0.1em; color: var(--color-ink-mute);
  padding: 10px;
}
.channel__body h4 { font-family: var(--font-serif); font-size: var(--fs-h3); margin-bottom: var(--space-2xs); }
.channel__body p { color: var(--color-ink-soft); }
.channel__body .channel__links { margin-top: var(--space-xs); display: flex; gap: var(--space-md); }

/* form */
.cform { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md) var(--space-md); }
.cform .full { grid-column: 1 / -1; }
.cform .field { display: flex; flex-direction: column; }
.cform label {
  font-family: var(--font-sans); font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-ink-soft); margin-bottom: 10px;
}
.cform label .req { color: var(--color-brass); }
.cform input, .cform select, .cform textarea {
  font-family: var(--font-sans); font-size: var(--fs-body); color: var(--color-ink);
  background: transparent; border: 0; border-bottom: 1px solid var(--color-line);
  padding: 10px 2px; transition: border-color var(--dur-fast) var(--ease);
}
.cform input:focus, .cform select:focus, .cform textarea:focus { outline: none; border-bottom-color: var(--color-brass); }
.cform textarea { resize: vertical; min-height: 110px; }
.cform select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23A68559' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 2px center; }
.cform__actions { grid-column: 1 / -1; display: flex; align-items: center; gap: var(--space-md); flex-wrap: wrap; margin-top: var(--space-xs); }
.btn-line {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-sans); font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--color-ink); border: 1px solid var(--color-ink);
  padding: 16px 32px; transition: background var(--dur-med) var(--ease), color var(--dur-med) var(--ease);
}
.btn-line:hover { background: var(--color-ink); color: var(--color-bg); }
.cform__msg { grid-column: 1 / -1; display: none; font-family: var(--font-sans); font-size: var(--fs-body); padding: 14px 18px; border: 1px solid var(--color-brass); color: var(--color-brass-deep); background: rgba(166,133,89,0.06); }
.cform__msg.show { display: block; }

/* ---------------------------------------------------------------------
   7 · Responsive
   ------------------------------------------------------------------- */
@media (max-width: 900px) {
  .gm-trigger__label--hide-sm { display: none; }
  .gm-header__concierge { display: none; }
  .gm-header { grid-template-columns: 1fr auto 1fr; }
  .gm-menu__grid { grid-template-columns: 1fr; gap: var(--space-xl); }
  .gm-menu__cats { grid-template-columns: 1fr; }
  .gm-letter__regions { grid-template-columns: 1fr; }
  .concierge__grid { grid-template-columns: 1fr; }
  .cform { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  .gm-brand { letter-spacing: 0.22em; font-size: 20px; }
  .channel { flex-direction: column; }
}

/* ---------------------------------------------------------------------
   8 · Suggested-language badge (in the letter overlay)
   ------------------------------------------------------------------- */
.suggested-badge {
  display: inline-block;
  background: var(--color-brass);
  color: var(--color-bg);
  font-family: var(--font-sans);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 3px 9px;
  margin-right: 10px;
  vertical-align: middle;
  line-height: 1;
}
.gm-lang-opt.is-suggested { color: var(--color-brass-deep); }

/* ---------------------------------------------------------------------
   9 · RTL (Arabic) — small adjustments
   ------------------------------------------------------------------- */
[dir="rtl"] .suggested-badge { margin-right: 0; margin-left: 10px; }
[dir="rtl"] .link-arrow::after { content: '←'; }
[dir="rtl"] .gm-menu__primary a:hover { padding-left: 0; padding-right: 14px; }
[dir="rtl"] .gm-cat__list a:hover { padding-left: 0; padding-right: 12px; }
[dir="rtl"] .gm-cat__list a::before { left: auto; right: 0; }
[dir="rtl"] .gm-cat__list a:hover::before { width: 7px; }
[dir="rtl"] .gm-overlay__close { right: auto; left: var(--container-pad); }
[dir="rtl"] .gm-letter__head { flex-direction: row-reverse; }
[dir="rtl"] .gm-trigger { flex-direction: row-reverse; }

/* ---------------------------------------------------------------------
   10 · Concierge channel cards (WeChat / WhatsApp / Instagram on contact.html)
   ------------------------------------------------------------------- */
.qr-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
  margin-top: var(--space-md);
}
.qr-card {
  background: var(--color-bg);
  border: 1px solid var(--color-line-soft);
  padding: clamp(20px, 2.4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin: 0;
  transition: box-shadow var(--dur-med) var(--ease), transform var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.qr-card:hover {
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
  border-color: var(--color-line);
}
.qr-card__media {
  aspect-ratio: 1 / 1;
  background: #fff;
  border: 1px solid var(--color-line-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.qr-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6%;
}
.qr-card__body { display: flex; flex-direction: column; gap: 6px; }
.qr-card__eyebrow {
  font-family: var(--font-sans);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-brass-deep);
}
.qr-card__title {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.18;
  color: var(--color-ink);
  margin: 4px 0 4px;
}
.qr-card__hint {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-ink-soft);
  margin: 0;
}

@media (max-width: 880px) {
  .qr-row { grid-template-columns: 1fr; }
  .qr-card__media { max-width: 280px; margin: 0 auto; width: 100%; }
}
