/* ============================================================
   Fumiko Shimazaki — Personal Branding Site
   Design reference: shuku-kokon.com
   ============================================================ */

:root {
  /* Colors */
  --color-bg-cream: #F7F3EE;
  --color-bg-sand: #EDE6DC;
  --color-bg-card: #FFFFFF;

  --color-text: #3C3530;
  --color-heading: #5C4A3A;
  --color-caption: #8C8279;
  --color-placeholder: #B5A898;

  --color-cta: #7A6655;
  --color-cta-hover: #5C4A3A;
  --color-divider: #D4C9BC;
  --color-accent: #A0522D;

  /* Fonts */
  --font-heading: "Shippori Mincho", "Noto Serif JP", "Yu Mincho", "YuMincho", serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-accent: "Cormorant Garamond", "Shippori Mincho", serif;

  /* Font sizes */
  --fs-hero: clamp(2rem, 4.5vw, 3.25rem);
  --fs-section: clamp(1.5rem, 3vw, 2.25rem);
  --fs-sub: clamp(1.125rem, 2vw, 1.5rem);
  --fs-body: 1rem;
  --fs-caption: 0.875rem;
  --fs-small: 0.75rem;

  /* Spacing */
  --space-section: clamp(5rem, 10vw, 10rem);
  --space-x: clamp(1.5rem, 5vw, 6rem);
  --space-card: 1.5rem;

  /* Radius */
  --radius-card: 2px;
  --radius-btn: 0;

  /* Layout */
  --max-width: 1280px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.9;
  color: var(--color-text);
  background: var(--color-bg-cream);
  -webkit-font-smoothing: antialiased;
  font-weight: 300;
  letter-spacing: 0.04em;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-text); text-decoration: none; transition: opacity 0.2s ease, color 0.2s ease; }
a:hover { opacity: 0.65; }

ul, ol { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  color: var(--color-heading);
  line-height: 1.6;
  letter-spacing: 0.08em;
}

/* Layout utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-x);
  padding-right: var(--space-x);
}

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

.section-sand { background: var(--color-bg-sand); }
.section-cream { background: var(--color-bg-cream); }

/* Dual heading (日本語 + English) — SHUKU style */
.dual-heading {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.dual-heading-en {
  display: block;
  font-family: var(--font-accent);
  font-size: var(--fs-caption);
  color: var(--color-caption);
  letter-spacing: 0.4em;
  text-transform: uppercase;
  font-weight: 400;
  margin-bottom: 1.25rem;
}

.dual-heading-jp {
  font-size: var(--fs-section);
  font-family: var(--font-heading);
  color: var(--color-heading);
  letter-spacing: 0.12em;
  font-weight: 400;
  line-height: 1.7;
}

.dual-heading-jp::after {
  content: "";
  display: block;
  width: 1px;
  height: 40px;
  background: var(--color-divider);
  margin: 1.5rem auto 0;
}

/* Divider (legacy support) */
.divider {
  width: 1px;
  height: 40px;
  background: var(--color-divider);
  margin: 0 auto 2.5rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  padding: 1.25rem 0;
  transition: background 0.3s ease, padding 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(247, 243, 238, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-divider);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-heading);
  letter-spacing: 0.25em;
  text-align: center;
}

.site-logo-en {
  display: block;
  font-family: var(--font-accent);
  font-size: 0.65rem;
  color: var(--color-caption);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-top: 4px;
  font-weight: 400;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav ul {
  display: flex;
  gap: 2rem;
}

.site-nav a {
  color: var(--color-text);
  font-size: var(--fs-small);
  letter-spacing: 0.2em;
  font-family: var(--font-body);
  text-transform: uppercase;
}

/* Button — minimal SHUKU-like */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--color-cta);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: var(--fs-small);
  letter-spacing: 0.3em;
  border: none;
  cursor: pointer;
  transition: background 0.3s ease, color 0.3s ease;
  text-align: center;
  text-transform: uppercase;
  font-family: var(--font-body);
  font-weight: 400;
}
.btn:hover {
  background: var(--color-cta-hover);
  color: #fff;
  opacity: 1;
}

.btn-outline {
  background: transparent;
  color: var(--color-heading);
  border: 1px solid var(--color-heading);
}
.btn-outline:hover {
  background: var(--color-heading);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.7);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

/* Inline arrow link */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-caption);
  letter-spacing: 0.2em;
  color: var(--color-heading);
  font-family: var(--font-body);
  text-transform: uppercase;
}
.arrow-link::after {
  content: "→";
  font-family: var(--font-accent);
  transition: transform 0.3s ease;
}
.arrow-link:hover::after { transform: translateX(6px); }

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  position: relative;
}
.nav-toggle span {
  display: block;
  position: absolute;
  left: 4px;
  right: 4px;
  height: 1px;
  background: var(--color-heading);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle span:nth-child(1) { top: 10px; }
.nav-toggle span:nth-child(2) { top: 16px; }
.nav-toggle span:nth-child(3) { top: 22px; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ===== Hero (full-bleed image) ===== */
.hero-full {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
  transform: scale(1.05);
  animation: heroZoom 18s ease-out forwards;
}

@keyframes heroZoom {
  to { transform: scale(1); }
}

.hero-full::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(60,53,48,0.18) 0%, rgba(60,53,48,0.35) 60%, rgba(60,53,48,0.55) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding: 0 var(--space-x);
}

.hero-en {
  font-family: var(--font-accent);
  font-size: 0.875rem;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  opacity: 0.85;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--fs-hero);
  font-weight: 400;
  color: #fff;
  margin-bottom: 2rem;
  letter-spacing: 0.2em;
  line-height: 1.8;
}

.hero-sub {
  font-size: var(--fs-caption);
  letter-spacing: 0.3em;
  opacity: 0.9;
  margin-bottom: 3rem;
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-family: var(--font-accent);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.8;
  z-index: 2;
}
.scroll-hint::after {
  content: "";
  display: block;
  width: 1px;
  height: 40px;
  background: #fff;
  margin: 0.75rem auto 0;
  animation: scrollPulse 2.5s ease-in-out infinite;
  transform-origin: top;
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(0.3); opacity: 0.3; }
  50% { transform: scaleY(1); opacity: 0.9; }
}

/* Legacy hero for inner pages */
.hero {
  padding-top: clamp(8rem, 14vw, 12rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  background: var(--color-bg-cream);
  text-align: center;
}
.hero .hero-title {
  color: var(--color-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
}
.hero .hero-en {
  color: var(--color-caption);
  opacity: 1;
}
.hero .hero-lead {
  max-width: 640px;
  margin: 0 auto;
  color: var(--color-text);
}

/* ===== Fixed background section (parallax-style) ===== */
.fixed-bg {
  position: relative;
  min-height: 60vh;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
}

.fixed-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(60,53,48,0.4);
}

.fixed-bg-content {
  position: relative;
  z-index: 1;
  padding: 4rem var(--space-x);
  max-width: 720px;
}

.fixed-bg-content h2 {
  font-size: var(--fs-section);
  color: #fff;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .fixed-bg { background-attachment: scroll; }
}

/* ===== Split layout (image + text) ===== */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.split.reverse > :first-child { order: 2; }

.split-image {
  position: relative;
  aspect-ratio: 4 / 5;
  background-size: cover;
  background-position: center;
}

.split-image.wide { aspect-ratio: 4 / 3; }

.split-text .dual-heading {
  text-align: left;
  margin-bottom: 2rem;
}

.split-text .dual-heading-jp::after {
  margin-left: 0;
  margin-right: auto;
  margin-top: 1.25rem;
}

.split-text p {
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .split { grid-template-columns: 1fr; }
  .split.reverse > :first-child { order: 0; }
  .split-image { aspect-ratio: 4/3; }
}

/* ===== Media card (image + caption) ===== */
.media-card {
  display: block;
  color: var(--color-text);
}

.media-card-image {
  aspect-ratio: 4 / 5;
  background-size: cover;
  background-position: center;
  margin-bottom: 1.5rem;
  overflow: hidden;
  transition: transform 0.6s ease;
}
.media-card:hover .media-card-image { transform: scale(1.03); }

.media-card-tag {
  font-family: var(--font-accent);
  font-size: var(--fs-small);
  color: var(--color-caption);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.media-card-title {
  font-size: var(--fs-sub);
  font-family: var(--font-heading);
  color: var(--color-heading);
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.media-card-lead {
  font-size: var(--fs-caption);
  color: var(--color-caption);
  line-height: 1.9;
}

/* Grid container for cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(2rem, 4vw, 3rem);
}

.card-grid.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 960px) { .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .card-grid.cols-4 { grid-template-columns: 1fr; } }

/* Legacy card (for pages not yet migrated) */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-card);
  padding: 2.5rem;
  border: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
}
.card-tag {
  font-family: var(--font-accent);
  font-size: var(--fs-small);
  color: var(--color-caption);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.card-title {
  font-family: var(--font-heading);
  font-size: var(--fs-sub);
  margin-bottom: 0.75rem;
  letter-spacing: 0.1em;
}
.card-lead {
  color: var(--color-caption);
  font-size: var(--fs-caption);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

/* Image gallery — SHUKU-like asymmetric */
.gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 80px;
  gap: 1rem;
  margin-top: 3rem;
}
.gallery-item {
  background-size: cover;
  background-position: center;
}
.gallery-item.g1 { grid-column: span 7; grid-row: span 5; }
.gallery-item.g2 { grid-column: span 5; grid-row: span 5; }
.gallery-item.g3 { grid-column: span 4; grid-row: span 4; }
.gallery-item.g4 { grid-column: span 4; grid-row: span 4; }
.gallery-item.g5 { grid-column: span 4; grid-row: span 4; }

@media (max-width: 768px) {
  .gallery { grid-template-columns: repeat(6, 1fr); grid-auto-rows: 60px; }
  .gallery-item.g1 { grid-column: span 6; grid-row: span 4; }
  .gallery-item.g2 { grid-column: span 6; grid-row: span 4; }
  .gallery-item.g3,
  .gallery-item.g4,
  .gallery-item.g5 { grid-column: span 3; grid-row: span 3; }
}

/* Newsletter */
.newsletter { text-align: center; }
.newsletter-lead { max-width: 560px; margin: 0 auto 2rem; color: var(--color-text); }
.newsletter-form {
  display: flex;
  gap: 0.5rem;
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}
.newsletter-form input[type="email"] {
  flex: 1 1 240px;
  padding: 1rem 1.25rem;
  font-family: inherit;
  font-size: var(--fs-caption);
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-btn);
  letter-spacing: 0.1em;
}
.newsletter-form input[type="email"]::placeholder { color: var(--color-placeholder); letter-spacing: 0.1em; }
.newsletter-note { font-size: var(--fs-small); color: var(--color-caption); margin-top: 1rem; letter-spacing: 0.2em; }

/* Timeline */
.chapter { margin-bottom: 5rem; }
.chapter-label {
  font-family: var(--font-accent);
  font-size: var(--fs-caption);
  letter-spacing: 0.3em;
  color: var(--color-caption);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.chapter-title {
  font-size: var(--fs-section);
  margin-bottom: 2rem;
  letter-spacing: 0.15em;
}
.chapter-body { max-width: 720px; }
.chapter-body p { margin-bottom: 1.25rem; }

.timeline { max-width: 720px; margin: 0 auto; }
.timeline-item {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-divider);
}
.timeline-year {
  font-family: var(--font-accent);
  font-size: 1.25rem;
  color: var(--color-cta);
  letter-spacing: 0.1em;
}
.timeline-text { color: var(--color-text); }

/* Project list */
.project-list .card { padding: 3rem; }
.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: var(--fs-caption);
  color: var(--color-caption);
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-divider);
}
.project-meta dt {
  font-family: var(--font-accent);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-size: var(--fs-small);
  color: var(--color-caption);
}
.project-meta dd { color: var(--color-text); }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}
.stat {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--color-bg-sand);
  border-radius: var(--radius-card);
}
.stat-value {
  font-family: var(--font-accent);
  font-size: 1.75rem;
  color: var(--color-cta);
  display: block;
  letter-spacing: 0.05em;
}
.stat-label { font-size: var(--fs-small); color: var(--color-caption); letter-spacing: 0.1em; }

/* Form */
.contact-form {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.form-field { display: flex; flex-direction: column; gap: 0.5rem; }
.form-field label {
  font-size: var(--fs-caption);
  color: var(--color-heading);
  letter-spacing: 0.15em;
  font-family: var(--font-heading);
}
.form-field .required {
  color: var(--color-accent);
  margin-left: 0.5rem;
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
}
.form-field input,
.form-field select,
.form-field textarea {
  padding: 1rem 1.25rem;
  font-family: inherit;
  font-size: var(--fs-body);
  color: var(--color-text);
  background: var(--color-bg-card);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-btn);
  letter-spacing: 0.05em;
}
.form-field textarea { min-height: 200px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--color-cta);
}

/* Contents tiles */
.content-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-card);
}
.content-tile {
  padding: 3rem 2rem;
  background: var(--color-bg-card);
  text-align: center;
  border: 1px solid var(--color-divider);
}
.content-tile-icon {
  font-family: var(--font-accent);
  font-size: 2rem;
  color: var(--color-cta);
  display: block;
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  background: var(--color-bg-sand);
  color: var(--color-caption);
  font-size: var(--fs-small);
  border-radius: 999px;
  letter-spacing: 0.2em;
  margin-top: 1rem;
  font-family: var(--font-accent);
  text-transform: uppercase;
}
.badge-soon {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

/* Social */
.social-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.social-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-divider);
  transition: border-color 0.3s ease;
}
.social-item:hover { border-color: var(--color-cta); opacity: 1; }
.social-handle { font-size: var(--fs-caption); color: var(--color-caption); }
.social-count { font-family: var(--font-accent); font-size: var(--fs-caption); color: var(--color-cta); letter-spacing: 0.1em; }

/* Media list */
.media-list { max-width: 820px; margin: 0 auto; }
.media-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-divider);
  align-items: center;
}
.media-year { font-family: var(--font-accent); color: var(--color-cta); font-size: var(--fs-caption); letter-spacing: 0.1em; }
.media-title { color: var(--color-text); font-size: var(--fs-caption); }
.media-link { font-size: var(--fs-small); color: var(--color-cta); white-space: nowrap; letter-spacing: 0.2em; text-transform: uppercase; }

/* Footer */
.site-footer {
  background: var(--color-heading);
  padding: 5rem 0 2rem;
  color: rgba(255,255,255,0.75);
  font-size: var(--fs-caption);
}
.site-footer a { color: rgba(255,255,255,0.9); }
.site-footer .container {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: start;
}
.footer-brand {
  font-family: var(--font-heading);
  color: #fff;
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  letter-spacing: 0.2em;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  justify-content: flex-end;
}
.footer-links a {
  font-size: var(--fs-caption);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  margin-top: 3rem;
  padding-top: 1.5rem;
  text-align: center;
  font-size: var(--fs-small);
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.55);
}

/* Fade-in */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1.2s ease, transform 1.2s ease;
}
.fade-in.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  .hero-bg { animation: none; transform: none; }
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    inset: 56px 0 0 0;
    background: var(--color-bg-cream);
    flex-direction: column;
    gap: 2rem;
    padding: 3rem var(--space-x);
    transform: translateX(100%);
    transition: transform 0.4s ease;
  }
  .site-nav ul { flex-direction: column; gap: 1.75rem; text-align: center; }
  .nav-open .site-nav { transform: translateX(0); }

  .site-footer .container { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }

  .media-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .timeline-item { grid-template-columns: 72px 1fr; gap: 1rem; }
}