:root {
  --molten-orange: #ff583d;
  --oxidised-copper: #8b1709;
  --mineral-stone: #236467;
  --thermal-teal: #48aaa5;
  --clay-glow: #fff7b6;
  --ember-red: #d10604;
  --mineral-mist: #f4f2ee;
  --fire-stone: #ef2b00;
  --deep-wine: #4d0202;
  --black-red: #170202;
  --ink: #140a08;
  --muted: rgba(244, 242, 238, 0.72);
  --line: rgba(255, 88, 61, 0.28);
  --font-display: "Syncopate", sans-serif;
  --font-ui: "Michroma", sans-serif;
  --font-body: "Jura", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--mineral-mist);
  background:
    radial-gradient(
      circle at 75% 10%,
      rgba(72, 170, 165, 0.14),
      transparent 34rem
    ),
    radial-gradient(
      circle at 12% 42%,
      rgba(239, 43, 0, 0.18),
      transparent 34rem
    ),
    linear-gradient(135deg, var(--black-red), var(--deep-wine) 46%, #210302);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  width: 100%;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 28px;
  padding: 22px clamp(18px, 4vw, 58px);
  border-bottom: 1px solid rgba(255, 88, 61, 0.22);
  background: rgba(23, 2, 2, 0.42);
  backdrop-filter: blur(18px);
  transition:
    background 220ms ease,
    padding 220ms ease;
}

.site-header.is-scrolled {
  padding-block: 14px;
  background: rgba(23, 2, 2, 0.84);
}

.brand,
.desktop-nav,
.reserve-pill,
.language-toggle,
.menu-button,
.eyebrow,
.button,
.space-controls,
.journey-track h3,
.element-grid span,
.site-footer {
  font-family: var(--font-ui);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: 74px;
  height: 44px;
}

.brand img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.desktop-nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2vw, 34px);
  color: rgba(244, 242, 238, 0.78);
  font-size: 11px;
}

.desktop-nav button {
  border: 0;
  padding: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: default;
  transition: color 180ms ease;
}

.desktop-nav button:hover {
  color: var(--molten-orange);
}

.reserve-pill {
  border: 1px solid var(--molten-orange);
  padding: 10px 16px;
  color: var(--molten-orange);
  background: transparent;
  font: inherit;
  font-size: 11px;
  cursor: default;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.language-toggle {
  position: relative;
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  width: 76px;
  height: 38px;
  border: 1px solid rgba(255, 88, 61, 0.42);
  padding: 0;
  color: var(--mineral-mist);
  background: rgba(244, 242, 238, 0.06);
  cursor: pointer;
}

.language-toggle::before {
  content: "";
  position: absolute;
  inset: 4px auto 4px 4px;
  width: 32px;
  background: var(--molten-orange);
  transition: transform 180ms ease;
}

.language-toggle.is-en::before {
  transform: translateX(36px);
}

.language-toggle span {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  color: var(--ink);
  font-size: 10px;
}

.language-toggle.is-en [data-lang-zh],
.language-toggle:not(.is-en) [data-lang-en] {
  color: rgba(244, 242, 238, 0.66);
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(244, 242, 238, 0.25);
  background: transparent;
  color: var(--mineral-mist);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 6px auto;
  background: currentColor;
}

.mobile-nav {
  position: fixed;
  inset: 74px 14px auto;
  z-index: 19;
  display: none;
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(23, 2, 2, 0.95);
  backdrop-filter: blur(18px);
}

.mobile-nav button {
  display: block;
  width: 100%;
  border: 0;
  padding: 14px 8px;
  border-bottom: 1px solid rgba(255, 88, 61, 0.14);
  color: var(--mineral-mist);
  background: transparent;
  font-family: var(--font-ui);
  font-size: 12px;
  text-align: left;
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  padding: 136px clamp(20px, 6vw, 82px) 58px;
}

.hero-carousel,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.035);
  transition:
    opacity 780ms ease,
    transform 1800ms ease;
}

.hero-slide.is-active {
  opacity: 1;
  transform: scale(1);
}

.hero-overlay {
  background:
    linear-gradient(
      90deg,
      rgba(23, 2, 2, 0.9) 0%,
      rgba(23, 2, 2, 0.46) 46%,
      rgba(23, 2, 2, 0.24)
    ),
    linear-gradient(0deg, rgba(23, 2, 2, 0.96), transparent 48%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 850px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--molten-orange);
  font-size: 11px;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  text-transform: uppercase;
}

h1 {
  max-width: 980px;
  font-size: clamp(34px, 6.6vw, 86px);
}

h2 {
  font-size: clamp(26px, 3.9vw, 52px);
}

h3 {
  margin: 0;
  font-size: 24px;
  line-height: 1.16;
}

.hero-copy {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  padding: 13px 20px;
  font-size: 11px;
  text-transform: uppercase;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  border-color: var(--molten-orange);
  background: var(--molten-orange);
  color: var(--ink);
}

.button.ghost {
  color: var(--mineral-mist);
}

.button.copper {
  border-color: var(--oxidised-copper);
  background: var(--oxidised-copper);
}

.hero-panel {
  position: absolute;
  z-index: 2;
  right: clamp(20px, 5vw, 72px);
  bottom: 52px;
  width: min(330px, calc(100vw - 40px));
  border-top: 1px solid var(--line);
  padding-top: 20px;
  color: var(--muted);
}

.hero-panel span {
  color: var(--thermal-teal);
  font-family: var(--font-ui);
  font-size: 12px;
}

.hero-panel strong {
  display: block;
  margin-top: 8px;
  color: var(--mineral-mist);
  font-family: var(--font-display);
  font-size: 16px;
  text-transform: uppercase;
}

.hero-dots {
  display: flex;
  gap: 9px;
  margin-top: 18px;
}

.hero-dots button {
  width: 9px;
  height: 9px;
  border: 1px solid rgba(244, 242, 238, 0.74);
  border-radius: 999px;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.hero-dots button.is-active {
  border-color: var(--molten-orange);
  background: var(--molten-orange);
}

section {
  padding: clamp(74px, 10vw, 140px) clamp(20px, 6vw, 82px);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(34px, 7vw, 96px);
  align-items: start;
}

.intro-copy > p,
.section-grid > p,
.private-copy p,
.after-dark p,
.reserve-card > p,
.space-content > p:last-of-type {
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.value-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 42px;
  background: var(--line);
}

.value-row article {
  min-height: 180px;
  padding: 24px;
  background: rgba(244, 242, 238, 0.05);
}

.value-row span {
  color: var(--thermal-teal);
  font-family: var(--font-display);
  font-size: 14px;
  text-transform: uppercase;
}

.value-row p {
  margin-bottom: 0;
  color: rgba(244, 242, 238, 0.68);
}

.journey {
  background: linear-gradient(
    180deg,
    rgba(139, 23, 9, 0.38),
    rgba(35, 100, 103, 0.12)
  );
}

.section-heading {
  max-width: 980px;
  margin-bottom: 44px;
}

.journey-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(210px, 1fr));
  gap: 1px;
  overflow-x: auto;
  background: var(--line);
}

.journey-track article {
  min-height: 280px;
  padding: 28px;
  background: rgba(23, 2, 2, 0.64);
}

.journey-track span {
  color: var(--thermal-teal);
  font-size: 11px;
  text-transform: uppercase;
}

.journey-track h3 {
  margin-top: 48px;
  color: var(--molten-orange);
}

.journey-track p {
  color: rgba(244, 242, 238, 0.68);
}

.featured {
  background: rgba(23, 2, 2, 0.64);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.feature-grid article {
  min-height: 560px;
  display: grid;
  grid-template-rows: minmax(260px, 1fr) auto;
  background: rgba(244, 242, 238, 0.05);
  overflow: hidden;
}

.feature-grid img {
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  filter: saturate(0.96) contrast(1.04);
  transition: transform 500ms ease;
}

.feature-grid article:hover img {
  transform: scale(1.035);
}

.feature-grid div {
  min-height: 230px;
  padding: 24px;
}

.feature-grid span,
.wellness-cards span {
  color: var(--thermal-teal);
  font-family: var(--font-ui);
  font-size: 11px;
  text-transform: uppercase;
}

.feature-grid h3 {
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: 20px;
  text-transform: uppercase;
}

.feature-grid p {
  margin-bottom: 0;
  color: rgba(244, 242, 238, 0.68);
}

.space-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  min-height: 650px;
  border: 1px solid var(--line);
  background: rgba(244, 242, 238, 0.05);
}

.space-image {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

.space-image img {
  height: 100%;
  object-fit: cover;
  transition:
    opacity 220ms ease,
    transform 700ms ease;
}

.space-image img.is-switching {
  opacity: 0.2;
  transform: scale(1.03);
}

.space-content {
  display: flex;
  flex-direction: column;
  justify-content: end;
  padding: clamp(28px, 5vw, 54px);
  background: linear-gradient(
    180deg,
    rgba(77, 2, 2, 0.28),
    rgba(77, 2, 2, 0.86)
  );
}

.space-content > p:first-child {
  margin: 0 0 16px;
  color: var(--thermal-teal);
  font-family: var(--font-ui);
}

.space-content h3 {
  margin-bottom: 18px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 54px);
  text-transform: uppercase;
}

.space-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.space-controls button {
  min-height: 38px;
  border: 1px solid rgba(244, 242, 238, 0.2);
  padding: 8px 13px;
  color: var(--mineral-mist);
  background: transparent;
  font: inherit;
  font-size: 10px;
  cursor: pointer;
}

.space-controls button.is-active {
  border-color: var(--thermal-teal);
  background: var(--thermal-teal);
  color: var(--ink);
}

.wellness {
  background: rgba(244, 242, 238, 0.94);
  color: var(--ink);
}

.wellness .eyebrow {
  color: var(--oxidised-copper);
}

.wellness .section-grid > p {
  color: rgba(20, 10, 8, 0.68);
}

.wellness-preview {
  margin-bottom: clamp(54px, 8vw, 96px);
}

.wellness-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(20, 10, 8, 0.14);
}

.wellness-cards article {
  min-height: 170px;
  padding: 24px;
  background: rgba(20, 10, 8, 0.04);
}

.wellness-cards span {
  color: var(--oxidised-copper);
}

.wellness-cards p {
  margin-bottom: 0;
  color: rgba(20, 10, 8, 0.68);
}

.element-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  margin-top: 48px;
  background: rgba(20, 10, 8, 0.12);
}

.element-grid article {
  min-height: 330px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: end;
}

.element-grid span {
  margin-bottom: auto;
  font-size: 11px;
  text-transform: uppercase;
}

.element-grid h3 {
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 20px;
  text-transform: uppercase;
}

.element-grid p {
  margin: 0;
}

.metal {
  background: var(--mineral-mist);
}

.wood {
  background: #265544;
  color: var(--mineral-mist);
}

.water {
  background: var(--thermal-teal);
  color: var(--ink);
}

.fire {
  background: var(--fire-stone);
  color: var(--mineral-mist);
}

.earth {
  background: var(--clay-glow);
}

.private,
.after-dark {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(34px, 6vw, 80px);
  align-items: center;
}

.private-media {
  display: grid;
  grid-template-columns: 0.88fr 1fr;
  gap: 14px;
  align-items: end;
}

.private-media img:first-child {
  margin-top: 70px;
}

.private-media img,
.after-dark-media img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 1px solid var(--line);
}

.private-copy .button {
  margin-top: 28px;
}

.after-dark {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
  background: linear-gradient(
    90deg,
    rgba(35, 100, 103, 0.26),
    rgba(139, 23, 9, 0.24)
  );
}

.after-dark-media img {
  aspect-ratio: 16 / 10;
}

.vision {
  min-height: 78vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    linear-gradient(90deg, rgba(23, 2, 2, 0.86), rgba(77, 2, 2, 0.48)),
    url("./public/assets/images/b1f-entrance.png") center / cover;
}

.vision h2 {
  max-width: 980px;
}

.vision p:not(.eyebrow) {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.reserve {
  min-height: 88vh;
  display: grid;
  place-items: center;
  background:
    linear-gradient(rgba(23, 2, 2, 0.76), rgba(23, 2, 2, 0.88)),
    url("./public/assets/images/water-headspa.png") center / cover;
}

.reserve-card {
  width: min(960px, 100%);
  border: 1px solid var(--line);
  padding: clamp(28px, 5vw, 62px);
  background: rgba(23, 2, 2, 0.82);
  backdrop-filter: blur(18px);
}

.reserve-form {
  display: grid;
  grid-template-columns: repeat(4, 1fr) auto;
  gap: 12px;
  margin-top: 34px;
}

label {
  display: grid;
  gap: 8px;
  color: rgba(244, 242, 238, 0.72);
  font-family: var(--font-ui);
  font-size: 10px;
  text-transform: uppercase;
}

input,
select {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  height: 48px;
  border: 1px solid rgba(244, 242, 238, 0.24);
  border-radius: 0;
  padding: 0 12px;
  color: var(--mineral-mist);
  background: rgba(244, 242, 238, 0.08);
  font: 600 15px var(--font-body);
}

select option {
  color: var(--ink);
}

.reserve-form .button {
  align-self: end;
  border: 0;
  cursor: pointer;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(20px, 6vw, 82px);
  border-top: 1px solid var(--line);
  color: rgba(244, 242, 238, 0.72);
  font-size: 11px;
}

@media (max-width: 1020px) {
  .desktop-nav,
  .reserve-pill {
    display: none;
  }

  .site-header {
    grid-template-columns: 1fr auto auto;
  }

  .menu-button {
    display: block;
  }

  .mobile-nav.is-open {
    display: block;
  }

  .hero-panel {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 36px;
  }

  .section-grid,
  .space-stage,
  .private,
  .after-dark {
    grid-template-columns: 1fr;
  }

  .value-row,
  .element-grid,
  .feature-grid,
  .wellness-cards,
  .reserve-form {
    grid-template-columns: 1fr;
  }

  .feature-grid article {
    min-height: 0;
  }

  .element-grid article {
    min-height: 230px;
  }

  .reserve-form {
    width: 100%;
    min-width: 0;
    grid-template-columns: minmax(0, 1fr);
  }

  .reserve-form > label {
    width: 100%;
    min-width: 0;
    max-width: 100%;
  }

  .reserve-form input,
  .reserve-form select {
    display: block;
    width: 100%;
    min-width: 0;
    max-width: 100%;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  input[type="date"] {
    display: block;
    width: 100%;
    height: 48px;
    min-width: 0;
    max-width: 100%;
    padding-inline: 0;
  }

  input[type="date"]::-webkit-date-and-time-value {
    padding-inline-start: 12px;
    padding-inline-end: 12px;
    text-align: left;
    line-height: 48px;
  }

  .hero {
    padding-top: 116px;
  }

  .hero-actions,
  .site-footer {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .private-media {
    grid-template-columns: 1fr;
  }

  .private-media img:first-child {
    margin-top: 0;
  }
}