/* =========================================================
   Mitta Lab. — Portfolio Landing Page
   Aesthetic: warm earth-tone, classic serif, deep indigo accent
   ========================================================= */

:root {
  /* default palette: 生成り × 墨 × 深い藍 */
  --bg: #F2ECDF;
  --bg-2: #ECE4D2;
  --surface: #FAF6EC;
  --ink: #28231D;
  --ink-soft: #4A4239;
  --mute: #897D6E;
  --line: #DDD2BD;
  --line-soft: #E8DFCC;
  --accent: #1F3A5F;
  --accent-soft: #38567C;
  --on-accent: #F8F3E4;

  /* fonts */
  --f-en: "Cormorant Garamond", "Playfair Display", "Cormorant", serif;
  --f-jp: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* layout */
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 56px);
  --gap: clamp(24px, 4vw, 48px);
  --section-gap: clamp(96px, 12vw, 160px);
  --radius: 2px;
}

/* ---------- Palettes ---------- */
:root[data-palette="ivory"] {
  --bg: #F2ECDF; --bg-2: #ECE4D2; --surface: #FAF6EC;
  --ink: #28231D; --ink-soft: #4A4239; --mute: #897D6E;
  --line: #DDD2BD; --line-soft: #E8DFCC;
  --accent: #1F3A5F; --accent-soft: #38567C; --on-accent: #F8F3E4;
}
:root[data-palette="kinari"] {
  --bg: #EDE6D3; --bg-2: #E2D9BF; --surface: #F4EEDC;
  --ink: #2B271F; --ink-soft: #4D453A; --mute: #897C68;
  --line: #CFC2A4; --line-soft: #DCCFAF;
  --accent: #6E3A2E; --accent-soft: #8A4A39; --on-accent: #F4EEDC;
}
:root[data-palette="sumi"] {
  --bg: #FAFAF7; --bg-2: #F2F1EC; --surface: #FFFFFF;
  --ink: #161513; --ink-soft: #2F2C28; --mute: #7A766F;
  --line: #E1DFD7; --line-soft: #EBE9E1;
  --accent: #161513; --accent-soft: #2F2C28; --on-accent: #FAFAF7;
}
:root[data-palette="moss"] {
  --bg: #EDE9D8; --bg-2: #E1DCC6; --surface: #F4F0DF;
  --ink: #25271D; --ink-soft: #3D403A; --mute: #847E69;
  --line: #CFC9AF; --line-soft: #DDD7BE;
  --accent: #3F5132; --accent-soft: #54683F; --on-accent: #F4F0DF;
}

/* ---------- Dark mode ---------- */
:root[data-dark="true"] {
  --bg: #181612; --bg-2: #1F1C17; --surface: #221F1A;
  --ink: #EFE8D6; --ink-soft: #CFC6B1; --mute: #8C8270;
  --line: #322C24; --line-soft: #2A251E;
  --accent: #B5C7DE; --accent-soft: #93A8C2; --on-accent: #181612;
}
:root[data-dark="true"][data-palette="kinari"] {
  --accent: #D6927E; --accent-soft: #BB7A66;
}
:root[data-dark="true"][data-palette="moss"] {
  --accent: #B7CB9D; --accent-soft: #95AE7B;
}
:root[data-dark="true"][data-palette="sumi"] {
  --accent: #EFE8D6; --accent-soft: #CFC6B1;
}

/* ---------- accent off ---------- */
:root[data-accent="off"] {
  --accent: var(--ink);
  --accent-soft: var(--ink-soft);
  --on-accent: var(--bg);
}

/* ---------- Font family swaps ---------- */
:root[data-font="modern"] {
  --f-en: "DM Serif Display", "Cormorant Garamond", serif;
  --f-jp: "Zen Old Mincho", "Noto Serif JP", serif;
}
:root[data-font="sans"] {
  --f-en: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --f-jp: "Noto Sans JP", system-ui, sans-serif;
}
:root[data-font="garamond"] {
  --f-en: "EB Garamond", "Cormorant Garamond", serif;
  --f-jp: "Shippori Mincho", "Noto Serif JP", serif;
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--f-jp);
  color: var(--ink);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  font-feature-settings: "palt" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  transition: background-color .4s ease, color .4s ease;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.en {
  font-family: var(--f-en);
  font-weight: 500;
  letter-spacing: 0.005em;
}

.mono {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ============================================================
   Nav
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.nav.scrolled { border-color: var(--line-soft); }
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-mark {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-en);
  font-size: 18px;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-mark .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.nav-links { display: flex; gap: 36px; align-items: center; }
.nav-links a {
  font-family: var(--f-en);
  font-size: 15px;
  color: var(--ink-soft);
  position: relative;
  padding: 6px 0;
  transition: color .2s;
}
.nav-links a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s cubic-bezier(.65,.05,.36,1);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

/* ============================================================
   Hero — logo left, text right
   ============================================================ */
.hero {
  padding: clamp(48px, 9vw, 120px) 0 clamp(80px, 11vw, 140px);
}
.hero-inner {
  display: grid;
  grid-template-columns: clamp(240px, 32vw, 360px) 1.0fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.hero-logo {
  aspect-ratio: 1 / 1;
  background: transparent;
  /*border: 1px solid var(--line);*/
  display: grid; place-items: center;
  position: relative;
  overflow: hidden;
}
.hero-logo image-slot { width: 100%; height: 100%; }
.hero-logo .logo-mark {
  /* fallback mark when no image dropped */
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 6px;
  font-family: var(--f-en);
  position: relative;
}
.hero-logo .logo-mark::before {
  content: "";
  position: absolute; inset: 16%;
  border: 1px solid var(--accent);
  pointer-events: none;
}
.hero-logo .logo-mark .lm-text {
  font-size: clamp(22px, 2.6vw, 30px);
  color: var(--accent);
  letter-spacing: 0.02em;
  font-style: italic;
  z-index: 1;
  line-height: 1;
}
.hero-logo .logo-mark .lm-sub {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.32em;
  color: var(--accent);
  z-index: 1;
  line-height: 1;
}

.hero-text { padding-top: 0; }
.hero-lead {
  font-family: var(--f-jp);
  font-size: clamp(18px, 1.9vw, 26px);
  font-weight: 400;
  line-height: 2.05;
  max-width: 32ch;
  color: var(--ink);
  margin: 0;
  letter-spacing: 0.06em;
  font-feature-settings: "palt" 1;
}
.hero-meta {
  margin-top: clamp(28px, 4vw, 48px);
  display: flex;
  gap: clamp(24px, 4vw, 48px);
  flex-wrap: wrap;
  align-items: baseline;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  max-width: 520px;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-meta-item .k { font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.18em; color: var(--mute); }
.hero-meta-item .v { font-family: var(--f-en); font-size: 16px; color: var(--ink); }

/* ============================================================
   Section header
   ============================================================ */
.section { padding: clamp(72px, 10vw, 120px) 0; }
.section + .section { padding-top: 0; }
.section-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: 24px;
  margin-bottom: clamp(36px, 5vw, 64px);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.section-head .num {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mute);
}
.section-head .title {
  font-family: var(--f-en);
  font-weight: 500;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1;
  margin: 0;
}
.section-head .title .it {
  font-style: italic;
  color: var(--accent);
}
.section-head .meta {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mute);
}

/* ============================================================
   Gallery
   ============================================================ */
.cat {
  margin-bottom: clamp(72px, 9vw, 112px);
}
.cat:last-child { margin-bottom: 0; }
.cat-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: clamp(20px, 2.5vw, 32px);
}
.cat-head .cat-name {
  font-family: var(--f-en);
  font-weight: 500;
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: 0.005em;
}
.cat-head .cat-name .it { font-style: italic; color: var(--accent); }
.cat-head .cat-sub {
  font-family: var(--f-jp);
  font-size: 13px;
  color: var(--mute);
  letter-spacing: 0.06em;
}
.cat-head .cat-rule {
  flex: 1;
  height: 1px;
  background: var(--line);
  margin-bottom: 6px;
}
.cat-head .cat-count {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--mute);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.6vw, 36px) clamp(20px, 2.4vw, 32px);
}

/* layout variants */
:root[data-gallery="featured"] .cards {
  grid-template-columns: 1.6fr 1fr 1fr;
  grid-template-rows: auto;
}
:root[data-gallery="featured"] .cards .card:first-child {
  grid-row: span 2;
}
:root[data-gallery="featured"] .cards .card:first-child .card-media {
  aspect-ratio: 4 / 5;
}
:root[data-gallery="two"] .cards {
  grid-template-columns: repeat(2, 1fr);
}
:root[data-gallery="two"] .cards .card-media { aspect-ratio: 16 / 11; }

:root[data-gallery="masonry"] .cards {
  grid-template-columns: repeat(3, 1fr);
}
:root[data-gallery="masonry"] .cards .card:nth-child(3n+1) .card-media { aspect-ratio: 4/5; }
:root[data-gallery="masonry"] .cards .card:nth-child(3n+2) .card-media { aspect-ratio: 1/1; margin-top: 32px; }
:root[data-gallery="masonry"] .cards .card:nth-child(3n+3) .card-media { aspect-ratio: 4/5; }

.card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0;
}
.card-media {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--surface);
 /*border: 1px solid var(--line);*/
  position: relative;
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-media image-slot {
  display: block;
  width: 100%; height: 100%;
}
.card-media .num {
  position: absolute;
  top: 10px; left: 12px;
  font-family: var(--f-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--mute);
  background: color-mix(in oklab, var(--surface) 86%, transparent);
  padding: 2px 7px;
  border: 1px solid var(--line);
  z-index: 2;
}
.card-media .num {
  display: none;
}
.card-title {
  font-family: var(--f-jp);
  font-weight: 600;
  font-size: 16px;
  margin: 4px 0 0;
  letter-spacing: 0.04em;
}
.card-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px;
  color: var(--mute);
  white-space: nowrap;
  flex-wrap: wrap;
}
.card-tag .tk { white-space: nowrap; }
.card-tag .tk {
  font-family: var(--f-en);
  font-style: italic;
  font-size: 13px;
  color: var(--accent);
}
.card-tag .tdiv { width: 14px; height: 1px; background: var(--line); }
.card-desc {
  font-size: 13px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin: 0;
  /*max-width: 36ch;*/
}

/* ============================================================
   About
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
.about-name {
  display: flex; align-items: baseline; gap: 16px;
  margin-bottom: 24px;
}
.about-name .jp {
  font-family: var(--f-jp);
  font-weight: 600;
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: 0.1em;
}
.about-name .en {
  font-family: var(--f-en);
  font-style: italic;
  font-size: 17px;
  color: var(--mute);
  letter-spacing: 0.02em;
}
.about-name .glyph {
  width: 22px; height: 22px;
  border: 1px solid var(--accent);
  display: inline-grid; place-items: center;
  color: var(--accent);
  font-family: var(--f-en);
  font-size: 13px;
  font-style: italic;
}

.about-bio {
  font-family: var(--f-jp);
  font-size: 14.5px;
  line-height: 2.15;
  color: var(--ink-soft);
  margin: 0 0 36px;
  max-width: 56ch;
}
.about-bio p { margin: 0 0 8px; }
.about-bio p:last-child { margin: 0; }

.about-portrait {
  aspect-ratio: 3 / 4;
  background: var(--surface);
  /*border: 1px solid var(--line);*/
}
.about-portrait image-slot { width: 100%; height: 100%; }

.about-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.attr {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px 32px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}
.attr:last-child { border-bottom: 1px solid var(--line); }
.attr .k {
  font-family: var(--f-en);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--ink);
}
.attr .v {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
  font-size: 14px;
  color: var(--ink-soft);
}
.attr .chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  /*border: 1px solid var(--line);*/
  background: transparent;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.attr .chip::before {
  content: "";
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
}
.attr .row {
  display: flex; gap: 18px; align-items: baseline;
  font-size: 14px;
}
.attr .row .date {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--mute);
  letter-spacing: 0.1em;
  min-width: 80px;
}

/* ============================================================
   Contact
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 3vw, 36px);
  margin-top: 24px;
}
.contact-card {
  /*border: 1px solid var(--line);*/
  background: transparent;
  padding: clamp(28px, 3.6vw, 44px);
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: border-color .25s, transform .25s;
}
.contact-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.contact-card .ic {
  width: 56px; height: 56px;
  /*border: 1px solid var(--accent);*/
  display: grid; place-items: center;
  color: var(--accent);
  font-family: var(--f-en);
  font-style: italic;
  font-size: 16px;
}
.contact-card .ic svg { display: block; width: 48px; height: 48px; }
.contact-card .lbl {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--mute);
}
.contact-card .val {
  font-family: var(--f-en);
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: 0.005em;
  color: var(--ink);
  word-break: break-all;
}
.contact-card .sub {
  font-size: 12.5px;
  color: var(--mute);
  margin: 0;
}
.contact-card .arr {
  position: absolute;
  right: clamp(20px, 3vw, 36px);
  top: clamp(28px, 3.6vw, 44px);
  font-family: var(--f-en);
  font-size: 22px;
  color: var(--accent);
  transition: transform .3s;
  display: none;
}
.contact-card:hover .arr { transform: translate(4px, -4px); }

.contact-foot {
  margin-top: clamp(28px, 4vw, 48px);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: baseline;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.contact-foot .note {
  font-size: 13px;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0;
}
.contact-foot .hrs {
  font-family: var(--f-mono);
  font-size: 11px;
  color: var(--mute);
  letter-spacing: 0.16em;
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  padding: clamp(80px, 10vw, 140px) 0 clamp(28px, 3vw, 40px);
  border-top: 1px solid var(--line);
  margin-top: clamp(80px, 10vw, 140px);
}
.footer-mark {
  font-family: var(--f-en);
  font-weight: 500;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1;
  letter-spacing: 0.01em;
  margin: 0 0 clamp(20px, 2.6vw, 32px);
}
.footer-mark .dot { color: var(--accent); }
.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  align-items: baseline;
}
.footer-row .copy {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mute);
}
.footer-row .links { display: flex; gap: 24px; }
.footer-row .links a {
  font-family: var(--f-en);
  font-size: 14px;
  color: var(--ink-soft);
  position: relative;
}
.footer-row .links a:hover { color: var(--accent); }

/* ============================================================
   Placeholder visual inside image-slot empty state
   ============================================================ */
.ph {
  width: 100%; height: 100%;
  background:
    repeating-linear-gradient(
      45deg,
      color-mix(in oklab, var(--ink) 4%, transparent) 0 1px,
      transparent 1px 9px
    ),
    var(--surface);
  display: grid;
  place-items: center;
  position: relative;
}
.ph .ph-label {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--mute);
  background: var(--surface);
  padding: 6px 12px;
  border: 1px solid var(--line);
  text-transform: uppercase;
}

/* ============================================================
   Reveal-on-scroll
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s cubic-bezier(.2,.7,.2,1), transform 1s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 140px 1fr; gap: 28px; }
  .nav-links { gap: 22px; }
  .cards { grid-template-columns: repeat(2, 1fr) !important; }
  :root[data-gallery="featured"] .cards .card:first-child { grid-row: auto; }
  :root[data-gallery="featured"] .cards .card:first-child .card-media { aspect-ratio: 4/3; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .about-portrait { max-width: 260px; }
  .contact-grid { grid-template-columns: 1fr; }
  .attr { grid-template-columns: 110px 1fr; gap: 12px 16px; }
}
@media (max-width: 560px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-logo { width: 110px; aspect-ratio: 1/1; }
  .cards { grid-template-columns: 1fr !important; }
  .section-head { grid-template-columns: auto 1fr; }
  .section-head .meta { display: none; }
  .nav-links { gap: 16px; font-size: 13px; }
  .nav-mark { font-size: 16px; }
}