/* ================================================================
   OBSIDIAN Water — VOSS-benchmark layout
   White ground, hairline black, wide-tracked caps, serif display
================================================================ */

:root {
  --ink: #111111;
  --paper: #ffffff;
  --grey: #f5f5f4;
  --line: rgba(17, 17, 17, 0.18);
  --font-display: "Cormorant Garamond", "Times New Roman", serif;
  --font-sans: "Jost", "Helvetica Neue", Arial, sans-serif;
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  --pad-x: clamp(20px, 6vw, 96px);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { background: none; border: 0; color: inherit; font: inherit; cursor: pointer; }

/* ---------------- header ---------------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  color: #fff;
  transition: background 0.4s ease, color 0.4s ease, box-shadow 0.4s ease;
}

.site-header.is-solid {
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 1px 0 var(--line);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 22px var(--pad-x);
}

.logo {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: 0.55em;
  text-indent: 0.55em; /* optical centering against tracking */
  text-transform: uppercase;
}

.main-nav { grid-column: 1; }
.logo { grid-column: 2; }
.header-right { grid-column: 3; justify-self: end; }

.main-nav ul { display: flex; gap: 34px; }

.main-nav a,
.region-btn,
.menu-toggle {
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 400;
  opacity: 0.9;
  transition: opacity 0.25s ease;
}

.main-nav a:hover { opacity: 0.55; }
.region-btn:hover { opacity: 0.55; }

.menu-toggle { display: none; grid-column: 1; justify-self: start; }
.menu-label--close { display: none; }
.menu-open .menu-label--open { display: none; }
.menu-open .menu-label--close { display: inline; }

.mobile-drawer {
  display: none;
  background: var(--paper);
  color: var(--ink);
  border-top: 1px solid var(--line);
  padding: 32px var(--pad-x) 48px;
}

.mobile-drawer a {
  display: block;
  padding: 14px 0;
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
}

.menu-open .mobile-drawer { display: block; }

/* ---------------- hero ---------------- */

.hero {
  position: relative;
  height: 100vh;
  min-height: 620px;
  overflow: hidden;
  background: #0a0a0a;
}

.hero-media,
.hero-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-fallback { z-index: 0; }
.hero-media { z-index: 1; }

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.05) 45%, rgba(0,0,0,0.45) 100%);
}

.hero-content {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  padding: 0 var(--pad-x);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(56px, 9vw, 128px);
  line-height: 1.02;
  letter-spacing: 0.02em;
}

.hero-kicker {
  margin-top: 28px;
  font-size: 11px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  opacity: 0.85;
}

.hero-scroll {
  position: absolute;
  bottom: 34px;
  left: 50%;
  z-index: 3;
  transform: translateX(-50%);
}

.hero-scroll span {
  display: block;
  width: 1px;
  height: 56px;
  background: rgba(255,255,255,0.7);
  animation: scrollPulse 2.2s ease-in-out infinite;
  transform-origin: top;
}

@keyframes scrollPulse {
  0%   { transform: scaleY(0); opacity: 0; }
  40%  { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(1) translateY(24px); opacity: 0; }
}

/* ---------------- intro ---------------- */

.intro {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(96px, 14vh, 180px) var(--pad-x);
  text-align: center;
}

.intro-heading {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(36px, 5vw, 58px);
  margin-bottom: 34px;
}

.intro-heading span { letter-spacing: 0.18em; }

.intro-body {
  font-size: 15px;
  line-height: 2;
  color: rgba(17,17,17,0.78);
  margin-bottom: 22px;
}

.intro-body--jp {
  font-family: var(--font-jp);
  font-size: 13px;
  color: rgba(17,17,17,0.6);
  margin-bottom: 40px;
}

/* Japanese sub-labels under English text */

.jp-sub {
  display: block;
  font-family: var(--font-jp);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.22em;
  text-transform: none;
  color: rgba(17,17,17,0.5);
  margin-top: 7px;
}

.section-label--light .jp-sub { color: rgba(255,255,255,0.55); }
.section-label--dark .jp-sub { margin-top: 9px; }

.jp-sub--center { text-align: center; }

.hero-kicker-jp {
  font-family: var(--font-jp);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.28em;
  color: rgba(255,255,255,0.6);
  margin-top: 14px;
}

.collection-desc--jp {
  font-family: var(--font-jp);
  font-size: 13px;
  color: rgba(17,17,17,0.55);
  margin-top: -14px;
}

/* underline button — VOSS style */

.btn-line {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  padding-bottom: 8px;
  border-bottom: 1px solid currentColor;
  transition: opacity 0.25s ease, letter-spacing 0.35s ease;
}

.btn-line:hover { opacity: 0.55; letter-spacing: 0.42em; }
.btn-line--light { color: #fff; }

/* ---------------- collections ---------------- */

.section-label {
  font-size: 12px;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 48px;
}

.section-label--light { color: #fff; text-align: left; }
.section-label--dark { text-align: left; margin-bottom: 0; }

.collections {
  padding: 0 var(--pad-x) clamp(96px, 12vh, 160px);
}

.collection-panel {
  display: none;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(40px, 6vw, 96px);
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
}

.collection-panel.is-active { display: grid; animation: panelFade 0.6s ease; }

@keyframes panelFade {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

.collection-visual img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.collection-desc {
  font-size: 15px;
  line-height: 2;
  color: rgba(17,17,17,0.78);
  margin-bottom: 32px;
  max-width: 52ch;
}

.collection-info .btn-line { margin-bottom: 56px; }

.product-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 3vw, 48px);
}

.product-row--three {
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 32px);
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--grey);
  margin-bottom: 18px;
  transition: transform 0.5s ease;
}

.product-card:hover img { transform: translateY(-6px); }

.product-card figcaption {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: center;
}

.product-card .jp-sub { margin-top: 0; }

.product-name {
  font-size: 12px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
}

.product-size {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(17,17,17,0.5);
}

/* ---------------- spotted ---------------- */

.spotted {
  padding: clamp(80px, 10vh, 140px) 0 clamp(96px, 12vh, 160px);
  border-top: 1px solid var(--line);
}

.spotted-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-x);
  margin-bottom: 48px;
}

.spotted-nav { display: flex; gap: 12px; }

.slide-btn {
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 16px;
  transition: background 0.3s ease, color 0.3s ease;
}

.slide-btn:hover { background: var(--ink); color: #fff; }

.spotted-track {
  display: flex;
  gap: clamp(16px, 2vw, 28px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: 0 var(--pad-x);
}

.spotted-track::-webkit-scrollbar { display: none; }

.spotted-card {
  flex: 0 0 clamp(240px, 26vw, 340px);
  scroll-snap-align: start;
}

.spotted-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--grey);
  margin-bottom: 16px;
}

.spotted-card figcaption { display: flex; flex-direction: column; gap: 4px; }

.spotted-title {
  font-size: 12px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
}

.spotted-sub {
  font-family: var(--font-jp);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(17,17,17,0.5);
}

/* ---------------- source band ---------------- */

.source-band {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #0a0a0a;
  color: #fff;
}

.source-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.source-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.62) 0%, rgba(0,0,0,0.15) 70%);
}

.source-content {
  position: relative;
  z-index: 1;
  padding: clamp(80px, 12vh, 140px) var(--pad-x);
  max-width: 640px;
}

.source-content .section-label { margin-bottom: 28px; }

.source-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 5.5vw, 68px);
  line-height: 1.08;
  margin-bottom: 28px;
}

.source-body {
  font-size: 15px;
  line-height: 2;
  color: rgba(255,255,255,0.82);
  margin-bottom: 18px;
  max-width: 46ch;
}

.source-body--jp {
  font-family: var(--font-jp);
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 40px;
}

/* ---------------- footer ---------------- */

.site-footer {
  padding: clamp(72px, 10vh, 120px) var(--pad-x) 40px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(48px, 6vw, 120px);
  padding-bottom: 72px;
  border-bottom: 1px solid var(--line);
}

.footer-heading {
  font-size: 11px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  margin-bottom: 22px;
}

.social-row { display: flex; gap: 24px; }

.social-row a,
.footer-col a {
  font-size: 13px;
  color: rgba(17,17,17,0.66);
  transition: color 0.25s ease;
}

.social-row a:hover,
.footer-col a:hover { color: var(--ink); }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.footer-col li { margin-bottom: 12px; }

.footer-address {
  font-family: var(--font-jp);
  font-size: 12.5px;
  line-height: 2;
  color: rgba(17,17,17,0.66);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 32px;
  flex-wrap: wrap;
}

.legal-links { display: flex; gap: 28px; }

.legal-links a,
.copyright {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(17,17,17,0.5);
}

/* ---------------- reveal on scroll ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.reveal.is-visible { opacity: 1; transform: none; }

/* ---------------- responsive ---------------- */

@media (max-width: 900px) {
  .main-nav, .header-right { display: none; }
  .menu-toggle { display: block; }
  .header-inner { grid-template-columns: 1fr auto 1fr; }

  .site-header.menu-open { background: var(--paper); color: var(--ink); }

  .collection-panel { grid-template-columns: 1fr; }
  .collection-visual { order: -1; }

  .footer-top { grid-template-columns: 1fr; }
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .footer-col--company { grid-column: span 2; }
}

@media (max-width: 560px) {
  .product-row,
  .product-row--three { grid-template-columns: 1fr; }
  .spotted-card { flex-basis: 78vw; }
}

/* ---------------- contact form ---------------- */

.contact-section {
  padding: clamp(90px, 13vw, 170px) var(--pad-x);
  border-top: 1px solid var(--line);
}

.contact-inner {
  max-width: 760px;
  margin: 0 auto;
}

.contact-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.1;
  margin-bottom: 22px;
}

.contact-lead {
  font-family: var(--font-jp);
  font-size: 14px;
  line-height: 2;
  color: rgba(17, 17, 17, 0.66);
  max-width: 46em;
  margin-bottom: clamp(44px, 6vw, 68px);
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 36px;
}

.field { display: flex; flex-direction: column; }
.field--full { grid-column: 1 / -1; }
.field--honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.field label {
  font-family: var(--font-jp);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(17, 17, 17, 0.62);
  margin-bottom: 12px;
}

.field .req {
  margin-left: 8px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: rgba(17, 17, 17, 0.42);
}

.field input,
.field select,
.field textarea {
  font-family: var(--font-jp);
  font-size: 15px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  padding: 10px 0;
  transition: border-color 0.3s ease;
  -webkit-appearance: none;
  appearance: none;
}

.field select {
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%),
                    linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: right 4px center, right 0 center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 24px;
  cursor: pointer;
}

.field textarea { resize: vertical; min-height: 150px; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--ink);
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-bottom-color: #b4342c; }

.contact-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.contact-submit {
  font-family: var(--font-sans);
  cursor: pointer;
  padding-bottom: 8px;
}

.contact-submit[disabled] { opacity: 0.4; cursor: default; }
.contact-submit[disabled]:hover { opacity: 0.4; letter-spacing: 0.34em; }

.contact-status {
  font-family: var(--font-jp);
  font-size: 13px;
  line-height: 1.7;
  margin: 0;
}

.contact-status.is-error { color: #b4342c; }
.contact-status.is-success { color: rgba(17, 17, 17, 0.7); }

@media (max-width: 640px) {
  .contact-form { grid-template-columns: 1fr; gap: 26px; }
}