/* Marquee Homes — style.css
   Concept: "Tối Giản Sang Trọng" (Minimal Luxury).
   Một accent duy nhất, nhiều khoảng trắng, typography editorial.
   Tokens & quy tắc theo docs/marquee-homes-design-system.md. */

/* ---------- 1. Tokens ---------- */
:root {
  --color-ivory: #FBF6EF;
  --color-ivory-2: #EFE3D3;
  --color-ink: #2B1E1A;
  --color-ink-soft: #5A473F;
  --color-muted: #8A6F5E;
  --color-accent: #D97131;
  --color-accent-light: #FED5AB;
  --color-accent-mid: #E79156;
  --color-deep: #87271B;
  --color-deep-2: #5D1F1E;
  --hairline: rgba(217, 113, 49, 0.18);

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Poppins', system-ui, sans-serif;
  --ease-default: cubic-bezier(0.22, 1, 0.36, 1);

  --maxw: 1280px;
  --gutter: 72px;
  --section-y: 100px;
  --header-h: 76px;
}

/* ---------- 2. Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-ink-soft);
  background: var(--color-ivory);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--color-accent); text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); color: var(--color-ink); font-weight: 600; margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* ---------- 3. Layout helpers ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: var(--section-y) var(--gutter);
}
.section-divider {
  border: 0;
  border-top: 1px solid var(--hairline);
  max-width: var(--maxw);
  margin: 0 auto;
}
.section__head { max-width: 720px; margin-bottom: 56px; }
.section__title {
  font-size: 34px; line-height: 1.15; letter-spacing: -0.4px; margin-top: 12px;
}
.section__intro { margin-top: 18px; color: var(--color-ink-soft); }
.section__cta { margin-top: 40px; }
.eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 2px; color: var(--color-accent);
}

/* Placeholder cảnh báo cần số liệu thật */
.need {
  display: inline-block;
  font-family: var(--font-body); font-weight: 500; font-size: 0.82em;
  color: var(--color-deep);
  background: rgba(135, 39, 27, 0.08);
  border: 1px dashed rgba(135, 39, 27, 0.4);
  border-radius: 3px; padding: 0 6px; letter-spacing: 0.3px;
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body); font-weight: 600; font-size: 14px;
  letter-spacing: 0.6px; cursor: pointer; border: 0;
  padding: 15px 28px; border-radius: 3px;
  transition: background .18s var(--ease-default), color .18s var(--ease-default), transform .18s var(--ease-default);
}
.btn--primary { background: var(--color-ink); color: var(--color-ivory); }
.btn--primary:hover { background: var(--color-deep); }
.btn--secondary {
  background: transparent; color: var(--color-ink);
  padding: 15px 4px; border-radius: 0;
  border-bottom: 1px solid var(--color-accent);
}
.btn--secondary:hover { color: var(--color-accent); }
.btn:disabled { opacity: .6; cursor: default; }
.link-arrow { font-weight: 500; border-bottom: 1px solid var(--hairline); padding-bottom: 2px; }

/* ---------- 5. Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 246, 239, 0.9);
  backdrop-filter: saturate(140%) blur(8px);
  transition: box-shadow .3s var(--ease-default), border-color .3s var(--ease-default);
  border-bottom: 1px solid transparent;
  animation: fadeIn .3s var(--ease-default) both;
}
.site-header.is-scrolled { border-bottom-color: var(--hairline); }
.header__inner {
  max-width: var(--maxw); margin: 0 auto;
  height: var(--header-h); padding: 0 var(--gutter);
  display: flex; align-items: center; gap: 32px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--color-ink); }
.brand__mark { position: relative; display: inline-grid; place-items: center; width: 40px; height: 40px; }
.brand__mark svg { position: absolute; inset: 0; margin: auto; }
.brand__initials { font-family: var(--font-display); font-weight: 600; font-size: 13px; color: var(--color-accent); letter-spacing: 0.5px; }
.brand__name { font-family: var(--font-display); font-weight: 600; font-size: 20px; letter-spacing: -0.3px; }
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav__link { color: var(--color-ink-soft); font-size: 15px; font-weight: 400; transition: color .15s; }
.nav__link:hover { color: var(--color-accent); }
.header__cta { margin-left: 8px; }
.nav__toggle { display: none; background: none; border: 0; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; margin-left: auto; }
.nav__toggle span { width: 24px; height: 2px; background: var(--color-ink); transition: transform .2s var(--ease-default), opacity .2s; }
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__mobile { display: none; flex-direction: column; gap: 4px; padding: 12px var(--gutter) 24px; border-top: 1px solid var(--hairline); }
.nav__mobile .nav__link { padding: 12px 0; border-bottom: 1px solid var(--hairline); }
.nav__mobile .btn { margin-top: 12px; text-align: center; }

/* ---------- 6. Hero ---------- */
.hero { max-width: var(--maxw); margin: 0 auto; padding: 72px var(--gutter) 40px; }
.hero__inner { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.hero__eyebrow { animation: fadeUp .5s var(--ease-default) .1s both; }
.hero__headline {
  font-size: 54px; line-height: 1.12; letter-spacing: -0.5px; margin: 18px 0 0;
  animation: fadeUp .6s var(--ease-default) .22s both;
}
.hero__subhead { margin: 24px 0 0; font-size: 18px; max-width: 46ch; animation: fadeUp .6s var(--ease-default) .38s both; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; margin-top: 36px; animation: fadeUp .6s var(--ease-default) .54s both; }
.hero__media { aspect-ratio: 4 / 5; animation: fadeIn .7s var(--ease-default) .3s both; }

/* Trust bar */
.trust {
  max-width: var(--maxw); margin: 48px auto 0; padding: 24px var(--gutter) 0;
  border-top: 1px solid var(--hairline);
  display: flex; flex-wrap: wrap; align-items: center; gap: 28px;
}
.trust__item { display: flex; flex-direction: column; gap: 2px; }
.trust__label { font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--color-muted); }
.trust__value { font-family: var(--font-display); font-size: 18px; color: var(--color-ink); }
.trust__sep { width: 1px; height: 32px; background: var(--hairline); }

/* ---------- 7. Media blocks ---------- */
.media { position: relative; background: var(--color-ivory-2); overflow: hidden; }
.media img { width: 100%; height: 100%; object-fit: cover; }
.media__fallback {
  position: absolute; inset: 0; display: none;
  align-items: center; justify-content: center; text-align: center;
  padding: 24px; color: var(--color-muted); font-size: 14px; line-height: 1.5;
}
.media--missing img { display: none; }
.media--missing .media__fallback { display: flex; }

/* ---------- 8. Quick scan (stat grid) ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); }
.stat { background: var(--color-ivory); padding: 32px; display: flex; flex-direction: column; gap: 8px; }
.stat__value { font-family: var(--font-display); font-size: 30px; color: var(--color-accent); }
.stat__label { font-size: 14px; color: var(--color-muted); }

/* ---------- 9. Two-column block ---------- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.two-col:nth-of-type(even) .two-col__media { order: -1; } /* xen kẽ trái/phải */
.two-col__media { aspect-ratio: 4 / 3; align-self: stretch; }
.conn-list { margin-top: 32px; border-top: 1px solid var(--hairline); }
.conn { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--hairline); }
.conn__place { color: var(--color-ink); }
.conn__time { font-family: var(--font-display); font-size: 18px; color: var(--color-accent); white-space: nowrap; }

/* ---------- 10. Quy hoạch (tree) ---------- */
.tree { margin-bottom: 48px; }
.tree__root {
  display: inline-flex; flex-direction: column; gap: 4px;
  padding: 20px 28px; border: 1px solid var(--color-accent);
  border-radius: 3px; margin-bottom: 32px;
}
.tree__branch { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; position: relative; }
.tree__node { padding: 24px; border: 1px solid var(--hairline); border-radius: 3px; display: flex; flex-direction: column; gap: 6px; }
.tree__value { font-family: var(--font-display); font-size: 24px; color: var(--color-accent); }
.tree__label { font-size: 14px; color: var(--color-ink-soft); }
.quy-hoach__diagram { aspect-ratio: 16 / 9; margin-top: 8px; }

/* ---------- 11. Numbered index list ---------- */
.index-list { display: grid; gap: 0; }
.index-item { display: grid; grid-template-columns: 88px 1fr; gap: 24px; padding: 32px 0; border-top: 1px solid var(--hairline); }
.index-item:last-child { border-bottom: 1px solid var(--hairline); }
.index-item__num { font-family: var(--font-display); font-size: 44px; color: var(--color-accent); line-height: 1; }
.index-item__title { font-size: 21px; margin-bottom: 8px; }
.index-item__text { margin: 0; max-width: 60ch; }

/* ---------- 12. Amenities ---------- */
.amenity-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.amenity__name { font-size: 19px; padding-bottom: 12px; margin-bottom: 12px; border-bottom: 1px solid var(--hairline); }
.amenity__list li { padding: 8px 0; color: var(--color-ink-soft); font-size: 15px; }

/* ---------- 13. Floorplan + tabs + table + gate ---------- */
.floorplan__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--hairline); margin-bottom: 16px; }
.tab { background: none; border: 0; font-family: var(--font-body); font-size: 14px; font-weight: 500; color: var(--color-muted); padding: 12px 16px; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab.is-active { color: var(--color-ink); border-bottom-color: var(--color-accent); }
.tab-panel { display: none; color: var(--color-ink-soft); font-size: 15px; margin-bottom: 16px; }
.tab-panel.is-active { display: block; }
.floorplan__img { aspect-ratio: 4 / 3; }

.unit-table { width: 100%; border-collapse: collapse; margin-bottom: 32px; }
.unit-table th { text-align: left; font-family: var(--font-body); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--color-muted); padding: 12px; border-bottom: 1px solid var(--hairline); }
.unit-table td { padding: 14px 12px; border-bottom: 1px solid var(--hairline); font-size: 15px; }
.ut__type { font-family: var(--font-display); font-size: 17px; color: var(--color-ink); }

.gate { border: 1px solid var(--hairline); border-radius: 4px; padding: 28px; background: var(--color-ivory-2); }
.gate__lock { font-size: 20px; }
.gate__teaser { margin: 8px 0 20px; color: var(--color-ink); font-family: var(--font-display); font-size: 18px; }
.gate--open { background: var(--color-ivory); }
.gate__title { font-size: 19px; margin-bottom: 8px; }
.gate__note { margin-top: 12px; font-size: 14px; color: var(--color-muted); }

/* ---------- 14. Handover (materials table) ---------- */
.ho-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.ho-group__name { font-size: 15px; text-transform: uppercase; letter-spacing: 1.2px; color: var(--color-accent); padding-bottom: 12px; margin-bottom: 4px; border-bottom: 1px solid var(--color-accent); }
.ho-table { width: 100%; border-collapse: collapse; }
.ho-table th, .ho-table td { text-align: left; vertical-align: top; padding: 12px 0; border-bottom: 1px solid var(--hairline); font-size: 14px; line-height: 1.5; }
.ho-table th { font-family: var(--font-body); font-weight: 500; color: var(--color-ink); padding-right: 16px; width: 48%; }
.ho-table td { color: var(--color-ink-soft); }

/* ---------- 15. Pricing ---------- */
.pricing__public { margin-bottom: 32px; }
.pricing__line { font-family: var(--font-display); font-size: 32px; color: var(--color-ink); }
.pricing__note { margin: 8px 0 0; color: var(--color-muted); font-size: 14px; }

/* ---------- 16. Legal card ---------- */
.legal-card__box { border: 1px solid var(--color-accent); border-radius: 4px; padding: 40px; max-width: 720px; }
.legal-card__summary { font-family: var(--font-display); font-size: 22px; color: var(--color-ink); margin: 0 0 12px; }
.legal-card__no { margin: 0 0 24px; color: var(--color-ink-soft); }

/* ---------- 17. Timeline ---------- */
.timeline { display: grid; gap: 0; max-width: 760px; }
.ms { display: grid; grid-template-columns: 24px 1fr auto; align-items: center; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--hairline); }
.ms__dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--color-muted); }
.ms--done .ms__dot { background: var(--color-accent); border-color: var(--color-accent); }
.ms__label { color: var(--color-ink); }
.ms--upcoming .ms__label { color: var(--color-muted); }
.ms__date { font-size: 14px; color: var(--color-muted); }

/* ---------- 18. FAQ ---------- */
.faq-list { max-width: 820px; border-top: 1px solid var(--hairline); }
.faq-item { border-bottom: 1px solid var(--hairline); }
.faq-item summary { cursor: pointer; list-style: none; padding: 22px 0; font-family: var(--font-display); font-size: 19px; color: var(--color-ink); display: flex; justify-content: space-between; gap: 16px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--color-accent); font-family: var(--font-body); font-weight: 400; transition: transform .2s var(--ease-default); }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item__a { padding: 0 0 22px; max-width: 66ch; }
.faq-item__a p { margin: 0 0 12px; }

/* ---------- 19. Lead form ---------- */
.lead { background: var(--color-ink); color: var(--color-ivory); max-width: 100%; }
.lead__inner { max-width: 760px; margin: 0 auto; text-align: center; }
.lead .eyebrow { color: var(--color-accent-mid); }
.lead .section__title { color: var(--color-ivory); font-size: 32px; }
.lead-form { margin-top: 32px; text-align: left; }
.lead-form__incentive { color: var(--color-ivory); opacity: .85; margin: 0 0 24px; text-align: center; }
.lead-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field__label { font-size: 13px; font-weight: 500; letter-spacing: 0.3px; color: var(--color-accent-light); }
.field input, .field select {
  font-family: var(--font-body); font-size: 15px; padding: 14px 16px;
  background: rgba(255, 255, 255, 0.06); color: var(--color-ivory);
  border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 3px;
}
.field input::placeholder { color: rgba(251, 246, 239, 0.4); }
.field input:focus, .field select:focus { outline: none; border-color: var(--color-accent); }
.field select option { color: var(--color-ink); }
.lead-form__submit { width: 100%; margin-top: 8px; background: var(--color-accent); }
.lead-form__submit:hover { background: var(--color-accent-mid); }
.lead-form__msg { min-height: 22px; margin: 14px 0 0; text-align: center; font-size: 14px; }
.lead-form__msg.is-success { color: var(--color-accent-light); }
.lead-form__msg.is-error { color: #ffb4a0; }

/* ---------- 20. Modal (soft-gate form) ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 24px; }
.modal[hidden] { display: none; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(43, 30, 26, 0.55); backdrop-filter: blur(2px); }
.modal__panel { position: relative; background: var(--color-ink); color: var(--color-ivory); width: min(560px, 100%); max-height: 90vh; overflow: auto; padding: 40px; border-radius: 4px; animation: fadeUp .35s var(--ease-default) both; }
.modal__close { position: absolute; top: 12px; right: 16px; background: none; border: 0; color: var(--color-ivory); font-size: 28px; line-height: 1; cursor: pointer; }
body.modal-open { overflow: hidden; }

/* ---------- 21. Footer ---------- */
.site-footer { border-top: 1px solid var(--hairline); margin-top: 40px; }
.footer__inner { max-width: var(--maxw); margin: 0 auto; padding: 64px var(--gutter) 32px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; }
.footer__name { font-family: var(--font-display); font-size: 22px; color: var(--color-ink); }
.footer__tagline { margin: 8px 0 0; color: var(--color-muted); font-size: 14px; }
.footer__label { font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px; color: var(--color-muted); margin-bottom: 10px; }
.footer__links { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.footer__sep { color: var(--color-muted); }
.footer__legal { display: inline-block; margin-top: 12px; border-bottom: 1px solid var(--hairline); }
.footer__bottom { max-width: var(--maxw); margin: 0 auto; padding: 24px var(--gutter) 40px; border-top: 1px solid var(--hairline); }
.footer__disclaimer { font-size: 13px; color: var(--color-muted); margin: 0 0 8px; max-width: 70ch; }
.footer__copy { font-size: 13px; color: var(--color-muted); margin: 0; }

/* ---------- 22. Mobile bottom bar ---------- */
.mobile-bar { display: none; }
.mbar__inner { display: grid; grid-template-columns: repeat(3, 1fr); }
.mbar__btn { padding: 14px 8px; text-align: center; font-size: 14px; font-weight: 600; color: var(--color-ink); background: var(--color-ivory); border-right: 1px solid var(--hairline); }
.mbar__btn:last-child { border-right: 0; }
.mbar__btn--accent { background: var(--color-accent); color: var(--color-ivory); }

/* ---------- 23. Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease-default), transform .6s var(--ease-default); }
.reveal.is-in { opacity: 1; transform: none; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ---------- 24. Responsive ---------- */
@media (max-width: 980px) {
  :root { --gutter: 40px; --section-y: 72px; }
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__media { order: -1; aspect-ratio: 16 / 10; }
  .hero__headline { font-size: 40px; }
  .two-col, .floorplan__grid { grid-template-columns: 1fr; gap: 40px; }
  .two-col:nth-of-type(even) .two-col__media, .two-col__media { order: -1; }
  .amenity-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .tree__branch { grid-template-columns: 1fr; }
  .ho-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; --section-y: 56px; }
  body { font-size: 16px; }
  .nav, .header__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav__mobile:not([hidden]) { display: flex; }
  .hero { padding: 48px var(--gutter) 32px; }
  .hero__headline { font-size: 34px; }
  .hero__subhead { font-size: 16px; }
  .hero__ctas { gap: 12px; }
  .hero__ctas .btn { width: 100%; text-align: center; }
  .section__title { font-size: 28px; }
  .lead-form__row { grid-template-columns: 1fr; gap: 16px; }
  .amenity-grid, .stat-grid { grid-template-columns: 1fr; }
  .index-item { grid-template-columns: 56px 1fr; gap: 16px; }
  .index-item__num { font-size: 32px; }
  .footer__inner { flex-direction: column; }
  .modal__panel { padding: 32px 24px; }

  /* Mobile bottom bar cố định */
  .mobile-bar { display: block; position: fixed; bottom: 0; left: 0; right: 0; z-index: 60; border-top: 1px solid var(--hairline); box-shadow: 0 -2px 12px rgba(43, 30, 26, 0.06); }
  body { padding-bottom: 56px; } /* chừa chỗ cho bottom bar */
}

/* ---------- 25. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}