/* iro — Traditional Japanese Colors
   Gallery-style: color is the star, UI recedes to neutrals and generous whitespace. */

:root {
  --bg: #FBFAF7;
  --surface: #FFFFFF;
  --ink: #171614;
  --ink-soft: #4A4842;
  --mute: #8A8880;
  --line: #E6E3DB;
  --line-soft: #F0EDE5;
  --accent: #171614;
  --shadow-soft: 0 1px 0 rgba(23,22,20,0.04), 0 12px 32px -20px rgba(23,22,20,0.10);
  --shadow-lift: 0 1px 0 rgba(23,22,20,0.06), 0 24px 40px -24px rgba(23,22,20,0.18);
  --radius: 4px;
  --radius-lg: 8px;
  --serif: 'Cormorant Garamond', 'Noto Serif JP', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: 'Space Mono', 'SF Mono', Menlo, Consolas, monospace;
  --jp: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-variant-numeric: tabular-nums;
}

a { color: var(--ink); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .18s ease; }
a:hover { border-bottom-color: var(--ink); }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; text-wrap: balance; margin: 0; }
p { text-wrap: pretty; margin: 0 0 1em; }

.jp { font-family: var(--jp); }
.mono { font-family: var(--mono); }

/* ---- Layout ---- */
header.site {
  padding: 24px clamp(20px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
header.site .hbar {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  border-bottom: none;
}
.brand:hover { border-bottom: none; }
.brand-seal {
  font-family: var(--jp);
  font-size: 22px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.brand-name {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.brand-sub {
  display: block;
  font-family: var(--sans);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 2px;
}
nav.top {
  display: flex;
  gap: 20px;
  align-items: center;
}
nav.top a {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
}
nav.top a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); }

main {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(32px, 6vw, 72px) clamp(20px, 4vw, 40px);
}
.container-narrow {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(32px, 6vw, 72px) clamp(20px, 4vw, 40px);
}

.eyebrow {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

/* ---- Hero (home) ---- */
.hero {
  padding: clamp(24px, 5vw, 56px) 0 clamp(28px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(28px, 5vw, 56px);
}
.hero h1 {
  font-size: clamp(38px, 6.5vw, 68px);
  line-height: 1.05;
  margin-bottom: 18px;
}
.hero .lede {
  font-family: var(--serif);
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--ink-soft);
  max-width: 640px;
  line-height: 1.55;
  font-weight: 400;
  font-style: italic;
}
.hero .meta-line {
  margin-top: 22px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--mute);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---- Controls (search + filter) ---- */
.controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  padding: 20px 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.search-box {
  flex: 1 1 240px;
  min-width: 200px;
  position: relative;
}
.search-box input {
  width: 100%;
  padding: 12px 16px 12px 40px;
  font-family: var(--sans);
  font-size: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  transition: border-color .18s ease;
}
.search-box input:focus { outline: none; border-color: var(--ink); }
.search-box::before {
  content: '';
  position: absolute;
  left: 14px; top: 50%;
  width: 14px; height: 14px;
  border: 1.5px solid var(--mute);
  border-radius: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.search-box::after {
  content: '';
  position: absolute;
  left: 26px; top: calc(50% + 6px);
  width: 6px; height: 1.5px;
  background: var(--mute);
  transform: rotate(45deg);
  transform-origin: left top;
  pointer-events: none;
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.chip {
  padding: 8px 14px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all .18s ease;
}
.chip:hover { color: var(--ink); border-color: var(--ink-soft); }
.chip[aria-pressed="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }

.result-status {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--mute);
  letter-spacing: 0.08em;
  margin-left: auto;
  min-height: 18px;
}

/* ---- Grid (color tiles) ---- */
.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: clamp(12px, 2vw, 20px);
}
.tile {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  transition: transform .22s ease, box-shadow .22s ease;
  text-decoration: none;
  color: var(--ink);
}
.tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); border-bottom-color: var(--line-soft); }
.tile:hover .tile-swatch { transform: scale(1.02); }
.tile-swatch {
  aspect-ratio: 4 / 3;
  transition: transform .5s cubic-bezier(.2,.7,.2,1);
  position: relative;
}
.tile-body {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--line-soft);
  min-height: 92px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 6px;
}
.tile-name-jp {
  font-family: var(--jp);
  font-size: 18px;
  line-height: 1.3;
  color: var(--ink);
}
.tile-name-romaji {
  font-family: var(--serif);
  font-size: 15px;
  font-style: italic;
  color: var(--ink-soft);
  margin-top: 2px;
}
.tile-en {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.tile-hex {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.08em;
}

/* ---- Color detail page ---- */
.detail {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}
@media (max-width: 800px) { .detail { grid-template-columns: 1fr; } }

.detail-swatch {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  position: sticky;
  top: 24px;
}
.detail-body { padding-top: 4px; }
.detail-body .eyebrow { margin-bottom: 8px; }
.detail-body h1 {
  font-family: var(--jp);
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.05;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--ink);
}
.detail-body .romaji-line {
  font-family: var(--serif);
  font-size: clamp(22px, 2.4vw, 28px);
  font-style: italic;
  color: var(--ink-soft);
  margin-bottom: 6px;
}
.detail-body .en-line {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--mute);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.detail-body p { font-size: 15.5px; color: var(--ink-soft); }
.detail-body h2 {
  font-family: var(--serif);
  font-size: 22px;
  margin-top: 40px;
  margin-bottom: 14px;
}

/* Copy card grid */
.codes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
  margin: 18px 0 28px;
}
.code-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 12px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .18s ease;
  position: relative;
}
.code-card:hover { border-color: var(--ink); }
.code-card .code-label {
  font-family: var(--sans);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--mute);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.code-card .code-val {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--ink);
  word-break: break-all;
}
.code-card .copied-flag {
  position: absolute;
  top: 8px; right: 10px;
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--ink);
  background: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  opacity: 0;
  transition: opacity .18s ease;
}
.code-card.copied .copied-flag { opacity: 1; }

/* Harmony palette */
.harmony {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  margin: 12px 0 6px;
}
.harmony-swatch {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  position: relative;
  cursor: pointer;
}
.harmony-swatch:after {
  content: attr(data-hex);
  position: absolute;
  bottom: 6px; left: 6px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.05em;
  padding: 2px 4px;
  background: rgba(255,255,255,0.85);
  color: #171614;
  border-radius: 2px;
}
.harmony-swatch.on-dark:after { background: rgba(23,22,20,0.75); color: #fff; }
.harmony-caption {
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--mute);
  margin-top: 8px;
}
.harmony-caption strong { color: var(--ink); font-weight: 500; }

/* Related colors */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.related-card {
  display: block;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  text-decoration: none;
  color: var(--ink);
  transition: border-color .18s ease, transform .22s ease;
}
.related-card:hover { border-color: var(--ink-soft); transform: translateY(-1px); border-bottom-color: var(--ink-soft); }
.related-card .rel-swatch { aspect-ratio: 3 / 2; }
.related-card .rel-body { padding: 8px 10px 10px; }
.related-card .rel-name-jp { font-family: var(--jp); font-size: 13px; }
.related-card .rel-romaji { font-family: var(--serif); font-size: 11.5px; color: var(--mute); font-style: italic; }

/* ---- Palettes ---- */
.palette-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.palette-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  text-decoration: none;
  color: var(--ink);
  transition: box-shadow .22s ease, transform .22s ease;
}
.palette-card:hover { box-shadow: var(--shadow-lift); transform: translateY(-2px); border-bottom-color: var(--line); }
.palette-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  height: 110px;
}
.palette-strip > div { height: 100%; }
.palette-info { padding: 18px 20px; }
.palette-info .eyebrow { margin-bottom: 6px; }
.palette-info h3 { font-family: var(--serif); font-size: 22px; margin-bottom: 6px; }
.palette-info p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

/* Palette detail */
.palette-detail-strip {
  display: grid;
  grid-template-columns: 1fr;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 24px 0 40px;
  box-shadow: var(--shadow-soft);
}
.palette-detail-row {
  display: grid;
  grid-template-columns: 260px 1fr;
  align-items: stretch;
  border-top: 1px solid rgba(255,255,255,0.5);
}
.palette-detail-row:first-child { border-top: none; }
.palette-detail-row .swatch { min-height: 110px; }
.palette-detail-row .row-info { padding: 18px 22px; background: var(--surface); display: flex; flex-direction: column; justify-content: center; }
.palette-detail-row .row-info a { border-bottom: none; }
.palette-detail-row .row-info a:hover { border-bottom: 1px solid var(--ink); }
.palette-detail-row .row-jp { font-family: var(--jp); font-size: 20px; }
.palette-detail-row .row-romaji { font-family: var(--serif); font-style: italic; color: var(--ink-soft); font-size: 15px; margin-top: 2px; }
.palette-detail-row .row-meta { font-family: var(--mono); font-size: 11px; color: var(--mute); letter-spacing: 0.08em; margin-top: 4px; }
@media (max-width: 640px) {
  .palette-detail-row { grid-template-columns: 100px 1fr; }
}

/* ---- Cards / sections ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  margin-bottom: 18px;
}
.card h2 { font-size: 20px; margin-bottom: 10px; }
.card p:last-child { margin-bottom: 0; }
.card ul { margin: 0 0 0.6em 1.2em; padding: 0; color: var(--ink-soft); }
.card ul li { margin: 0.35em 0; }

/* ---- FAQ ---- */
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.faq details:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer;
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink);
  list-style: none;
  padding-right: 32px;
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '＋';
  position: absolute;
  right: 4px; top: 0;
  font-family: var(--sans);
  color: var(--mute);
  font-size: 18px;
  transition: transform .2s ease;
}
.faq details[open] summary::after { content: '−'; }
.faq .faq-a {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14.5px;
}

/* ---- Toast (copy notification) ---- */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #fff;
  padding: 12px 20px;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.06em;
  opacity: 0;
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
  z-index: 200;
  box-shadow: 0 12px 32px -12px rgba(0,0,0,0.3);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }

/* ---- Cookie banner ---- */
#cookie-banner {
  position: fixed;
  bottom: 16px; left: 16px; right: 16px;
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 18px;
  background: var(--ink);
  color: #F4F1E9;
  border-radius: var(--radius-lg);
  font-family: var(--sans);
  font-size: 13px;
  display: none;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  z-index: 150;
  box-shadow: 0 24px 48px -20px rgba(0,0,0,0.4);
}
#cookie-banner.show { display: flex; }
#cookie-banner a { color: #F4F1E9; border-bottom-color: rgba(244,241,233,0.4); }
#cookie-banner a:hover { border-bottom-color: #F4F1E9; }
.cb-actions { margin-left: auto; }
.cb-ok {
  background: #F4F1E9;
  color: var(--ink);
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 13px;
  cursor: pointer;
  letter-spacing: 0.04em;
}
.cb-ok:hover { background: #fff; }

/* ---- Footer ---- */
footer.site {
  border-top: 1px solid var(--line);
  padding: 40px clamp(20px, 4vw, 40px);
  margin-top: 60px;
  background: var(--surface);
  text-align: center;
}
footer.site .flinks {
  display: flex;
  gap: 22px;
  justify-content: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
footer.site .flinks a {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
footer.site .fnote {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.08em;
  margin: 6px 0;
}
footer.site .fmore { border-top: 1px solid var(--line); max-width: 680px; margin: 0 auto 18px; padding: 18px 0 6px; }
footer.site .fmore-label { font-family: var(--sans); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--mute); margin-bottom: 10px; }
footer.site .fmore-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; }
footer.site .fmore-list a { font-family: var(--sans); color: var(--ink-soft); text-decoration: none; font-size: 13px; letter-spacing: 0.04em; }
footer.site .fmore-list a:hover { color: var(--ink); }
footer.site .fmore-desc { color: var(--mute); font-size: 11px; margin-left: 4px; }

/* ---- Ad slots ---- */
.ad-slot {
  margin: 40px 0;
  min-height: 90px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--mute);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.ad-slot ins { width: 100%; }

/* ---- Utility ---- */
.hidden { display: none !important; }
.no-results {
  padding: 60px 0;
  text-align: center;
  color: var(--mute);
  font-family: var(--serif);
  font-style: italic;
  font-size: 18px;
}

/* ---- Breadcrumb ---- */
.crumb {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.crumb a { color: var(--mute); }
.crumb a:hover { color: var(--ink); }
.crumb span { color: var(--ink-soft); }