/* ==========================================================================
   四季彩アトリエ — site styles
   Paper, ink and soft watercolor washes taken from the instructor's work.
   ========================================================================== */

:root {
  --paper: #ffffff;
  --paper-deep: #f5f5f3;
  --paper-card: #ffffff;
  --ink: #2b2521;
  --ink-soft: #5b524b;
  --ink-mute: #8a8077;
  --line: #e6e4df;
  --line-soft: #efeeea;

  --rose: #b4566f;
  --rose-wash: #f2d4dc;
  --leaf: #4f6b52;
  --leaf-deep: #2f4234;
  --leaf-wash: #d9e5d3;
  --sky-wash: #d6e6ea;
  --gold: #b08d57;

  --font-sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  --font-serif: "Zen Old Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-latin: "Cormorant Garamond", "Times New Roman", serif;

  --wrap: 1200px;
  --gutter: clamp(20px, 5vw, 64px);
  --section-space: clamp(88px, 12vw, 160px);
  --radius: 4px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --header-height: 76px;
}

/* Base ------------------------------------------------------------------ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background-color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 2;
  letter-spacing: 0.04em;
  font-variant-numeric: lining-nums;
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
  overflow-x: clip;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
}

p,
h1,
h2,
h3,
dl,
dd,
figure,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--rose);
  outline-offset: 3px;
}

::selection {
  background: var(--rose-wash);
}

[data-key]:not([data-type="list"]) {
  white-space: pre-line;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 8px 16px;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus {
  top: 12px;
}

/* Watercolor washes ------------------------------------------------------ */

.wash {
  position: absolute;
  z-index: -1;
  pointer-events: none;
  filter: blur(46px);
  opacity: 0.75;
}

.wash-hero {
  top: -12%;
  right: -8%;
  width: min(70vw, 820px);
  height: min(70vw, 720px);
  background:
    radial-gradient(closest-side at 35% 40%, var(--rose-wash), transparent 70%),
    radial-gradient(closest-side at 70% 65%, var(--leaf-wash), transparent 72%),
    radial-gradient(closest-side at 60% 20%, var(--sky-wash), transparent 70%);
}

.wash-lesson {
  top: 18%;
  left: -16%;
  width: min(60vw, 640px);
  height: min(80vw, 900px);
  background:
    radial-gradient(closest-side at 50% 30%, var(--leaf-wash), transparent 70%),
    radial-gradient(closest-side at 40% 75%, var(--sky-wash), transparent 70%);
  opacity: 0.6;
}

.wash-contact {
  top: -30%;
  right: -10%;
  width: 70%;
  height: 160%;
  background:
    radial-gradient(closest-side at 40% 40%, rgba(180, 86, 111, 0.45), transparent 70%),
    radial-gradient(closest-side at 70% 70%, rgba(176, 141, 87, 0.3), transparent 70%);
  opacity: 0.55;
}

/* Announcement ------------------------------------------------------------ */

.announce {
  background: var(--leaf-deep);
  color: #f3efe6;
}

.announce p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 9px var(--gutter);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  line-height: 1.7;
  text-align: center;
}

/* Header ------------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  transition: background-color 300ms var(--ease), box-shadow 300ms var(--ease);
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 0 var(--line-soft);
  backdrop-filter: blur(10px);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  height: var(--header-height);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-text {
  display: grid;
  line-height: 1.3;
}

.brand-ja {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  font-weight: 500;
  letter-spacing: 0.16em;
}

.brand-en {
  color: var(--ink-mute);
  font-family: var(--font-latin);
  font-size: 0.82rem;
  font-style: italic;
  letter-spacing: 0.1em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.2vw, 30px);
  font-size: 0.86rem;
}

.site-nav a {
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
}

.site-nav a:not(.site-nav-cta)::after,
.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 320ms var(--ease);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after,
.text-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .site-nav-cta {
  padding: 9px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  transition: background-color 240ms var(--ease), color 240ms var(--ease);
}

.site-nav .site-nav-cta:hover {
  background: var(--ink);
  color: var(--paper);
}

.menu-button {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border: 0;
  background: none;
  cursor: pointer;
}

.menu-button-lines,
.menu-button-lines::before,
.menu-button-lines::after {
  position: absolute;
  left: 11px;
  width: 22px;
  height: 1px;
  background: var(--ink);
  transition: transform 260ms var(--ease), opacity 200ms;
}

.menu-button-lines {
  top: 22px;
}

.menu-button-lines::before,
.menu-button-lines::after {
  content: "";
  left: 0;
}

.menu-button-lines::before {
  top: -7px;
}

.menu-button-lines::after {
  top: 7px;
}

.menu-button[aria-expanded="true"] .menu-button-lines {
  background: transparent;
}

.menu-button[aria-expanded="true"] .menu-button-lines::before {
  transform: translateY(7px) rotate(45deg);
}

.menu-button[aria-expanded="true"] .menu-button-lines::after {
  transform: translateY(-7px) rotate(-45deg);
}

/* Shared pieces ------------------------------------------------------------ */

.section {
  position: relative;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: var(--section-space) var(--gutter) 0;
}

.section-heading {
  display: grid;
  gap: 6px;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section-en {
  color: var(--rose);
  font-family: var(--font-latin);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-style: italic;
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.section-ja {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.5;
}

.eyebrow {
  color: var(--ink-mute);
  font-family: var(--font-latin);
  font-size: 1rem;
  font-style: italic;
  letter-spacing: 0.12em;
}

.display-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.75;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 30px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
  transition: background-color 260ms var(--ease), color 260ms var(--ease), border-color 260ms var(--ease), transform 260ms var(--ease);
}

.button-primary {
  background: var(--ink);
  color: var(--paper);
}

.button-primary::after {
  content: "→";
  font-family: var(--font-latin);
  transition: transform 260ms var(--ease);
}

.button-primary:hover {
  background: var(--leaf-deep);
  border-color: var(--leaf-deep);
}

.button-primary:hover::after {
  transform: translateX(4px);
}

.button-ghost {
  background: transparent;
}

.button-ghost:hover {
  background: var(--paper-card);
}

.text-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 4px;
  font-family: var(--font-latin);
  font-size: 1.08rem;
  font-style: italic;
  letter-spacing: 0.08em;
}

.text-link::before {
  content: "";
  order: 2;
  width: 28px;
  height: 1px;
  background: currentColor;
  transition: width 300ms var(--ease);
}

.text-link:hover::before {
  width: 42px;
}

.check-list {
  display: grid;
  gap: 8px;
}

.check-list li {
  position: relative;
  padding-left: 22px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.8;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.78em;
  left: 2px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--leaf-wash);
  box-shadow: inset 0 0 0 1px rgba(79, 107, 82, 0.5);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list li {
  padding: 4px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-card);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
}

/* Reveal ---------------------------------------------------------------- */

.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 900ms var(--ease), transform 900ms var(--ease);
}

.has-js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Hero ------------------------------------------------------------------ */

.hero {
  position: relative;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: clamp(24px, 4vw, 56px) var(--gutter) 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.hero-copy {
  display: grid;
  gap: 28px;
  animation: rise 1100ms var(--ease) both;
}

.hero-title {
  display: grid;
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 3.9vw, 3.4rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.55;
}

.hero-title span[data-key] {
  display: block;
  white-space: nowrap;
}

.hero-title span:nth-child(3) {
  color: var(--leaf-deep);
}

.hero-lead {
  max-width: 30em;
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 2.1;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-visual {
  position: relative;
  animation: rise 1300ms 120ms var(--ease) both;
}

.hero-frame {
  position: relative;
  aspect-ratio: 4 / 3.3;
  overflow: hidden;
  border-radius: 200px 200px var(--radius) var(--radius);
  background: var(--paper-deep);
  box-shadow: 0 30px 60px -36px rgba(43, 37, 33, 0.45);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1400ms var(--ease);
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.06);
  transition: transform 7000ms linear;
}

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

.hero-slide figcaption {
  position: absolute;
  left: 20px;
  bottom: 20px;
  max-width: calc(100% - 40px);
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.88);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  line-height: 1.6;
  backdrop-filter: blur(6px);
}

.hero-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
}

.hero-count {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-mute);
  font-family: var(--font-latin);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.hero-count-line {
  width: 48px;
  height: 1px;
  background: var(--line);
}

.hero-dots {
  display: flex;
  gap: 6px;
}

.hero-dot {
  position: relative;
  width: 40px;
  height: 24px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.hero-dot::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--line);
  transition: background-color 300ms var(--ease);
}

.hero-dot.is-active::before {
  background: var(--ink);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.hero-fact {
  display: grid;
  gap: 4px;
  padding: 22px clamp(16px, 2.4vw, 32px);
}

.hero-fact + .hero-fact {
  border-left: 1px solid var(--line);
}

.hero-fact dt {
  color: var(--rose);
  font-family: var(--font-latin);
  font-size: 0.98rem;
  font-style: italic;
  letter-spacing: 0.1em;
  text-transform: capitalize;
}

.hero-fact dd {
  font-family: var(--font-serif);
  font-size: 1.04rem;
  letter-spacing: 0.08em;
  line-height: 1.7;
}

/* Transform-only so the hero stays visible for LCP. */
@keyframes rise {
  from {
    transform: translateY(14px);
  }
}

/* About ------------------------------------------------------------------- */

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(40px, 7vw, 120px);
  align-items: center;
}

.about-copy {
  display: grid;
  gap: 24px;
  justify-items: start;
  color: var(--ink-soft);
}

.about-copy .section-heading {
  margin-bottom: 8px;
}

.about-copy .display-heading {
  color: var(--ink);
  margin-bottom: 8px;
}

.about-art {
  position: relative;
  justify-self: center;
  max-width: 380px;
}


.about-art img {
  mix-blend-mode: multiply;
}

.about-art figcaption,
.lesson-image figcaption {
  margin-top: 12px;
  color: var(--ink-mute);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-align: center;
}

/* Lesson ------------------------------------------------------------------ */

.lesson-steps {
  display: grid;
  gap: clamp(64px, 9vw, 120px);
}

.lesson-step {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: center;
}

.lesson-step:nth-child(even) .lesson-image {
  order: 2;
}

.lesson-image {
  position: relative;
}

.lesson-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 24px 48px -32px rgba(43, 37, 33, 0.5);
}

.lesson-step:nth-child(2) .lesson-image img {
  object-fit: contain;
  mix-blend-mode: multiply;
  box-shadow: none;
}

.lesson-body {
  display: grid;
  gap: 18px;
  color: var(--ink-soft);
}

.lesson-number {
  color: var(--rose);
  font-family: var(--font-latin);
  font-size: clamp(3rem, 6vw, 4.6rem);
  font-style: italic;
  line-height: 1;
}

.lesson-body h3 {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.3vw, 1.7rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.lesson-body .check-list {
  margin-top: 6px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

/* Info --------------------------------------------------------------------- */

.info-panel {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--paper-card);
  box-shadow: 0 30px 60px -48px rgba(43, 37, 33, 0.35);
}

.info-table {
  display: grid;
}

.info-table div {
  display: grid;
  grid-template-columns: 7em minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.info-table div:first-child {
  padding-top: 0;
}

.info-table dt {
  color: var(--ink-mute);
  font-size: 0.86rem;
  letter-spacing: 0.14em;
}

.info-table dd {
  font-family: var(--font-serif);
  font-size: 1.04rem;
  letter-spacing: 0.06em;
  line-height: 1.8;
}

.info-aside {
  display: grid;
  gap: 24px;
  align-content: start;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.info-actions {
  display: grid;
  gap: 10px;
}

/* Gallery preview ---------------------------------------------------------- */

.gallery-preview-lead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
  margin: -24px 0 40px;
  color: var(--ink-soft);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 54px 34px;
}

.gallery-card {
  margin: 0;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 0.95;
  object-fit: contain;
  border: 1px solid var(--line);
  background: var(--paper-deep);
  transition: transform 700ms var(--ease);
}

.gallery-card:hover img,
.gallery-card:focus-within img {
  transform: scale(1.02);
}

.gallery-card figcaption {
  padding-top: 14px;
}

.gallery-card figcaption span {
  display: block;
  color: var(--ink-mute);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.gallery-card figcaption strong {
  display: block;
  margin-top: 6px;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.8;
}

.gallery-preview-more {
  margin-top: 40px;
  text-align: center;
}

/* Instructor --------------------------------------------------------------- */

.instructor-layout {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
}

.instructor-photo img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  object-position: 35% 50%;
  border-radius: var(--radius) 160px var(--radius) var(--radius);
}

.instructor-copy {
  display: grid;
  gap: 18px;
  justify-items: start;
  color: var(--ink-soft);
}

.instructor-role {
  color: var(--rose);
  font-size: 0.8rem;
  letter-spacing: 0.24em;
}

.instructor-name {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: 0.24em;
  line-height: 1.4;
}

.bio {
  display: grid;
  margin-top: clamp(48px, 6vw, 80px);
  border-top: 1px solid var(--line);
}

.bio-row {
  display: grid;
  grid-template-columns: minmax(8em, 2fr) minmax(0, 9fr);
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.bio-row dt {
  color: var(--ink-mute);
  font-size: 0.86rem;
  letter-spacing: 0.14em;
}

.bio-row dd {
  font-size: 0.94rem;
  line-height: 2;
}

/* Contact ------------------------------------------------------------------ */

.contact {
  padding-bottom: var(--section-space);
}

.contact-panel {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(40px, 7vw, 96px);
  border-radius: var(--radius);
  background: var(--leaf-deep);
  color: #f3efe6;
}

.section-heading-light .section-en {
  color: #e9b7c4;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

.contact-copy {
  display: grid;
  gap: 20px;
  color: rgba(243, 239, 230, 0.82);
}

.contact-copy .display-heading {
  color: #fbf8f2;
}

.contact-cards {
  display: grid;
  gap: 12px;
}

.contact-card {
  display: grid;
  gap: 4px;
  padding: 20px 24px;
  border: 1px solid rgba(243, 239, 230, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  transition: background-color 260ms var(--ease), border-color 260ms var(--ease);
}

.contact-card:hover {
  border-color: rgba(243, 239, 230, 0.5);
  background: rgba(255, 255, 255, 0.1);
}

.contact-label {
  color: #e9b7c4;
  font-family: var(--font-latin);
  font-size: 1rem;
  font-style: italic;
  letter-spacing: 0.1em;
  text-transform: capitalize;
}

.contact-card strong {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.6;
  word-break: break-all;
}

.contact-note {
  color: rgba(243, 239, 230, 0.75);
  font-size: 0.86rem;
  line-height: 1.8;
}

.contact-more {
  margin-top: 4px;
  color: rgba(243, 239, 230, 0.6);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.contact-more::after {
  content: " ↗";
}

/* Footer ------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.site-footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 2fr) minmax(0, 1fr);
  gap: 32px;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 56px var(--gutter) 32px;
  font-size: 0.86rem;
}

.footer-brand {
  display: grid;
  gap: 6px;
  color: var(--ink-soft);
}

.footer-name {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  letter-spacing: 0.16em;
}

.footer-address {
  font-size: 0.8rem;
  line-height: 1.8;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 6px 32px;
  align-content: start;
}

.footer-nav a:hover,
.footer-links a:hover {
  color: var(--rose);
}

.footer-links {
  display: grid;
  gap: 6px;
  align-content: start;
  justify-items: start;
}

.footer-links a::after {
  content: " ↗";
  color: var(--ink-mute);
}

.footer-credit {
  padding: 0 var(--gutter) 32px;
  color: var(--ink-mute);
  font-family: var(--font-latin);
  font-size: 0.86rem;
  letter-spacing: 0.1em;
  text-align: center;
}

.mobile-cta {
  display: none;
}

/* Gallery page ------------------------------------------------------------- */

.gallery-hero,
.not-found {
  position: relative;
  display: grid;
  gap: 20px;
  justify-items: start;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: clamp(32px, 6vw, 80px) var(--gutter) clamp(40px, 6vw, 72px);
}

.not-found {
  min-height: 60vh;
  align-content: center;
  color: var(--ink-soft);
}

.breadcrumb {
  display: flex;
  gap: 10px;
  color: var(--ink-mute);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.breadcrumb a:hover {
  color: var(--rose);
}

.gallery-title {
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 4.4vw, 3.3rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.6;
}

.gallery-intro {
  max-width: 36em;
  color: var(--ink-soft);
}

.gallery-archive {
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-card);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease);
}

.filter-chip span {
  color: var(--ink-mute);
  font-family: var(--font-latin);
  font-size: 0.9rem;
}

.filter-chip:hover {
  border-color: var(--ink);
}

.filter-chip.is-active {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.filter-chip.is-active span {
  color: rgba(255, 255, 255, 0.7);
}

.masonry {
  columns: 3 280px;
  column-gap: clamp(14px, 2vw, 24px);
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: clamp(18px, 2.4vw, 32px);
  animation: fade 600ms var(--ease) both;
}

.masonry-item[hidden] {
  display: none;
}

.masonry-button {
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius);
  background: var(--paper-deep);
  cursor: zoom-in;
}

.masonry-button img {
  width: 100%;
  transition: transform 1000ms var(--ease), opacity 400ms;
}

.masonry-button:hover img {
  transform: scale(1.03);
}

.masonry-caption {
  display: grid;
  gap: 2px;
  padding: 12px 2px 0;
  line-height: 1.7;
}

.masonry-caption span {
  color: var(--rose);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
}

.masonry-caption strong {
  font-family: var(--font-serif);
  font-size: 0.96rem;
  font-weight: 500;
  letter-spacing: 0.06em;
}

.gallery-empty {
  padding: 64px 0;
  color: var(--ink-mute);
  text-align: center;
}

.gallery-cta {
  display: grid;
  gap: 24px;
  justify-items: center;
  max-width: calc(var(--wrap) + var(--gutter) * 2);
  margin: clamp(56px, 8vw, 104px) auto 0;
  padding: clamp(48px, 7vw, 88px) var(--gutter);
  border-top: 1px solid var(--line);
  text-align: center;
}

.gallery-cta-copy {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  letter-spacing: 0.08em;
  line-height: 1.8;
}

.gallery-cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* Lightbox ---------------------------------------------------------------- */

.lightbox {
  width: 100vw;
  max-width: 100vw;
  height: 100dvh;
  max-height: 100dvh;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(24, 21, 18, 0.94);
  color: #f3efe6;
}

.lightbox[open] {
  display: grid;
  place-items: center;
  animation: fade 260ms var(--ease);
}

.lightbox::backdrop {
  background: transparent;
}

.lightbox-figure {
  display: grid;
  gap: 16px;
  justify-items: center;
  max-width: min(92vw, 1200px);
  padding: 64px 72px;
}

.lightbox-figure img {
  max-width: 100%;
  max-height: calc(100dvh - 200px);
  width: auto;
  object-fit: contain;
}

.lightbox-figure figcaption {
  display: grid;
  gap: 2px;
  text-align: center;
  line-height: 1.7;
}

.lightbox-figure figcaption span {
  color: #e9b7c4;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
}

.lightbox-figure figcaption strong {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.lightbox-nav,
.lightbox-close {
  position: absolute;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(243, 239, 230, 0.25);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  color: inherit;
  font-family: var(--font-latin);
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
}

.lightbox-nav:hover,
.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.14);
}

.lightbox-prev {
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-next {
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-close {
  top: 16px;
  right: 16px;
  font-size: 1.5rem;
}

@keyframes fade {
  from {
    opacity: 0;
  }
}

/* Responsive -------------------------------------------------------------- */

@media (max-width: 960px) {
  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  :root {
    --header-height: 64px;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: var(--header-height) 0 auto;
    display: grid;
    gap: 0;
    padding: 8px var(--gutter) 28px;
    background: var(--paper);
    box-shadow: 0 24px 40px -24px rgba(43, 37, 33, 0.3);
    font-size: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 240ms var(--ease), transform 240ms var(--ease), visibility 0s 240ms;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity 240ms var(--ease), transform 240ms var(--ease);
  }

  .site-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav .site-nav-cta {
    margin-top: 20px;
    padding: 14px;
    border-radius: 999px;
    text-align: center;
  }

  .site-header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
  }

  .hero-inner,
  .about-layout,
  .lesson-step,
  .info-panel,
  .instructor-layout,
  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    order: -1;
  }

  .hero-frame {
    border-radius: 140px 140px var(--radius) var(--radius);
  }

  .lesson-step:nth-child(even) .lesson-image {
    order: 0;
  }

  .about-art {
    max-width: 300px;
  }

  .site-footer-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 0.95rem;
    padding-bottom: 64px;
  }

  .brand-ja {
    font-size: 1rem;
  }

  .hero-title {
    font-size: clamp(1.9rem, 8.6vw, 2.4rem);
  }

  .hero-frame {
    aspect-ratio: 4 / 3.6;
    border-radius: 100px 100px var(--radius) var(--radius);
  }

  .hero-actions .button {
    flex: 1 1 100%;
  }

  .hero-facts {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-fact {
    grid-template-columns: 5em minmax(0, 1fr);
    align-items: baseline;
    padding: 14px 0;
  }

  .hero-fact + .hero-fact {
    border-left: 0;
    border-top: 1px solid var(--line-soft);
  }

  .info-table div,
  .bio-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .gallery-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 38px;
  }

  .contact-panel {
    margin: 0 calc(var(--gutter) * -1);
    border-radius: 0;
  }

  .site-footer-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .mobile-cta {
    position: fixed;
    inset: auto 0 0;
    z-index: 30;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
    gap: 8px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 -1px 0 var(--line);
    backdrop-filter: blur(10px);
    transform: translateY(110%);
    transition: transform 320ms var(--ease);
  }

  .mobile-cta.is-visible {
    transform: none;
  }

  .mobile-cta a {
    display: grid;
    place-items: center;
    min-height: 46px;
    border: 1px solid var(--ink);
    border-radius: 999px;
    font-size: 0.88rem;
    letter-spacing: 0.08em;
  }

  .mobile-cta a:first-child {
    background: var(--ink);
    color: var(--paper);
  }

  .lightbox-figure {
    padding: 72px 12px 88px;
  }

  .lightbox-prev,
  .lightbox-next {
    top: auto;
    bottom: 20px;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}

.masonry-caption span:empty, .masonry-caption strong:empty { display: none; }