/* ===========================
   CSS Variables
   =========================== */
:root {
  --color-bg:       #0D0D0D;
  --color-surface:  #141414;
  --color-ink:      #F5F0E8;
  --color-muted:    #888880;
  --color-accent:   #C8A96E;
  --color-accent2:  #4A7C6F;
  --color-white:    #FAFAF5;

  --font-serif-jp:  'Noto Serif JP', serif;
  --font-sans-jp:   'Noto Sans JP', sans-serif;
  --font-en-serif:  'Cormorant Garamond', serif;
  --font-en-sans:   'Montserrat', sans-serif;

  --max-width:      1200px;
  --nav-height:     70px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans-jp);
  font-weight: 300;
  line-height: 1.8;
  cursor: none;
  overflow-x: hidden;
}

body.loading {
  overflow: hidden;
}

/* Grain texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0.035;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

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

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

/* ===========================
   Custom Cursor
   =========================== */
.cursor {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, opacity 0.3s ease;
  mix-blend-mode: difference;
}

.cursor-dot {
  position: fixed;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10001;
  transform: translate(-50%, -50%);
}

.cursor.hover {
  width: 40px;
  height: 40px;
  opacity: 0.6;
}

.cursor.click {
  width: 12px;
  height: 12px;
}

@media (pointer: coarse) {
  .cursor, .cursor-dot { display: none; }
  body { cursor: auto; }
}

/* ===========================
   Navigation
   =========================== */
.nav {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  transition: background 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.scrolled {
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-logo {
  font-family: var(--font-en-serif);
  font-weight: 300;
  font-size: 1.05rem;
  letter-spacing: 0.25em;
  color: var(--color-ink);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-en-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
  right: auto; left: 0;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: none;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-ink);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile fullscreen menu */
.nav-mobile-menu {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: var(--color-bg);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.nav-mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.nav-mobile-menu a {
  font-family: var(--font-en-serif);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-ink);
  transition: color 0.3s ease;
}

.nav-mobile-menu a:hover { color: var(--color-accent); }

/* ===========================
   Section Base
   =========================== */
section {
  padding: 120px 40px;
  max-width: var(--max-width);
  margin: 0 auto;
}

section.full-width {
  max-width: 100%;
  padding: 120px 0;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.section-label {
  font-family: var(--font-en-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-title-en {
  font-family: var(--font-en-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--color-ink);
  line-height: 1.1;
}

.section-title-jp {
  font-family: var(--font-serif-jp);
  font-size: 0.95rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--color-muted);
  margin-top: 8px;
}

.section-divider {
  width: 60px;
  height: 1px;
  background: var(--color-accent);
  margin: 32px 0;
}

/* ===========================
   Hero Section
   =========================== */
#home {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 40px;
  max-width: 100%;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  z-index: 1;
}

.hero-name-en {
  font-family: var(--font-en-serif);
  font-size: clamp(0.85rem, 1.5vw, 1.1rem);
  font-weight: 300;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.hero-name-jp {
  font-family: var(--font-serif-jp);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 300;
  letter-spacing: 0.5em;
  color: var(--color-ink);
  line-height: 1;
  margin-bottom: 32px;
}

.hero-line {
  width: 0;
  height: 1px;
  background: var(--color-accent);
  margin: 0 auto 32px;
  max-width: 240px;
}

.hero-subtitle {
  font-family: var(--font-sans-jp);
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  font-weight: 300;
  letter-spacing: 0.25em;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.hero-meta {
  font-family: var(--font-en-sans);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  color: var(--color-muted);
  opacity: 0.6;
}

/* Hero SNS (bottom left) */
.hero-sns {
  position: absolute;
  bottom: 48px;
  left: 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

.hero-sns::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: var(--color-muted);
  opacity: 0.4;
}

.hero-sns a {
  display: block;
  color: var(--color-muted);
  transition: color 0.3s ease;
}

.hero-sns a:hover { color: var(--color-accent); }

.hero-sns svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Scroll indicator (bottom right) */
.hero-scroll {
  position: absolute;
  bottom: 48px;
  right: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-scroll-text {
  font-family: var(--font-en-sans);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--color-muted);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: var(--color-muted);
  opacity: 0.4;
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--color-accent);
  animation: scrollLine 1.8s ease-in-out infinite;
}

/* ===========================
   About Section
   =========================== */
#about {
  display: grid;
  grid-template-columns: 1fr;
  gap: 80px;
}

.about-header {
  grid-column: 1 / -1;
}

.about-body {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-text {
  font-family: var(--font-sans-jp);
  font-size: 0.95rem;
  line-height: 2.2;
  color: var(--color-ink);
  opacity: 0.9;
}

.about-text p {
  margin-bottom: 1.5em;
}

.about-text p:last-child {
  margin-bottom: 0;
}

.about-photo-wrap {
  position: sticky;
  top: 100px;
}

.photo-placeholder {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--color-surface);
  border: 1px solid rgba(200, 169, 110, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.photo-placeholder::before {
  content: '';
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 1px solid var(--color-accent);
  opacity: 0.4;
}

.photo-placeholder-text {
  position: absolute;
  bottom: 20px;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--font-en-sans);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--color-muted);
  text-transform: uppercase;
}

/* Timeline */
.timeline {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 1px solid rgba(200, 169, 110, 0.2);
  padding-left: 32px;
  margin-top: 40px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 16px 0;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--color-accent);
  background: var(--color-bg);
}

.timeline-year {
  font-family: var(--font-en-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  padding-top: 2px;
}

.timeline-desc {
  font-family: var(--font-sans-jp);
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ===========================
   Works Section
   =========================== */
#works {
  background: var(--color-surface);
  max-width: 100%;
  padding: 120px 0;
}

.works-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 60px;
}

.work-card {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-bg);
  overflow: hidden;
  cursor: none;
}

.work-thumb {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
  position: relative;
  transition: transform 0.6s ease;
}

.work-thumb-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.work-thumb-symbol {
  font-family: var(--font-serif-jp);
  font-size: 3rem;
  color: rgba(200, 169, 110, 0.15);
  font-weight: 300;
}

.work-card:hover .work-thumb {
  transform: scale(1.04);
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13, 13, 13, 0.85);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.work-card:hover .work-overlay {
  opacity: 1;
}

.work-cat {
  font-family: var(--font-en-sans);
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.work-title {
  font-family: var(--font-serif-jp);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.5;
  margin-bottom: 8px;
}

.work-role {
  font-family: var(--font-en-sans);
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-muted);
}

/* ===========================
   Zazen Section
   =========================== */
#zazen {
  background: var(--color-surface);
  max-width: 100%;
  padding: 120px 0;
}

.zazen-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.zazen-copy {
  font-family: var(--font-serif-jp);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  line-height: 1.4;
  color: var(--color-ink);
  letter-spacing: 0.05em;
  margin: 40px 0 32px;
}

.zazen-body {
  font-family: var(--font-sans-jp);
  font-size: 0.9rem;
  line-height: 2.2;
  color: var(--color-muted);
}

.zazen-venues {
  padding-top: 20px;
}

.zazen-venue-label {
  font-family: var(--font-en-sans);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 32px;
}

.zazen-venue-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.zazen-venue-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.zazen-venue-item::before {
  content: '·';
  color: var(--color-accent);
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}

.zazen-venue-name {
  font-family: var(--font-serif-jp);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-ink);
  letter-spacing: 0.1em;
}

.zazen-venue-detail {
  font-family: var(--font-sans-jp);
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-top: 4px;
}

/* ===========================
   Writing Section
   =========================== */
#writing {
  max-width: var(--max-width);
}

.writing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 60px;
}

.writing-card {
  background: var(--color-surface);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: background 0.3s ease;
  position: relative;
  overflow: hidden;
}

.writing-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.4s ease;
}

.writing-card:hover {
  background: #1a1a1a;
}

.writing-card:hover::before {
  width: 100%;
}

.writing-num {
  font-family: var(--font-en-sans);
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  opacity: 0.7;
}

.writing-title {
  font-family: var(--font-serif-jp);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-ink);
  line-height: 1.5;
}

.writing-excerpt {
  font-family: var(--font-sans-jp);
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--color-muted);
  flex: 1;
}

.writing-arrow {
  font-family: var(--font-en-sans);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
}

.writing-arrow span {
  transition: transform 0.3s ease;
}

.writing-card:hover .writing-arrow span {
  transform: translateX(6px);
}

/* ===========================
   Links Section
   =========================== */
#links {
  text-align: center;
  max-width: var(--max-width);
}

.links-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 64px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.link-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(136, 136, 128, 0.15);
  transition: color 0.3s ease;
  color: var(--color-muted);
}

.link-item:first-child {
  border-top: 1px solid rgba(136, 136, 128, 0.15);
}

.link-item:hover {
  color: var(--color-ink);
}

.link-item:hover .link-icon { color: var(--color-accent); }

.link-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-muted);
  transition: color 0.3s ease;
}

.link-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.link-platform {
  font-family: var(--font-en-sans);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  width: 90px;
  flex-shrink: 0;
}

.link-handle {
  font-family: var(--font-en-sans);
  font-size: 0.82rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  flex: 1;
}

.link-arrow {
  font-family: var(--font-en-sans);
  font-size: 0.72rem;
  opacity: 0.4;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.link-item:hover .link-arrow {
  transform: translateX(4px);
  opacity: 0.8;
}

/* ===========================
   Contact Section
   =========================== */
#contact {
  text-align: center;
  max-width: var(--max-width);
}

.contact-body {
  font-family: var(--font-sans-jp);
  font-size: 0.92rem;
  line-height: 2.2;
  color: var(--color-muted);
  margin: 32px auto 48px;
  max-width: 480px;
}

.contact-btn {
  display: inline-block;
  padding: 14px 40px;
  border: 1px solid var(--color-accent);
  font-family: var(--font-en-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: background 0.3s ease, color 0.3s ease;
}

.contact-btn:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ===========================
   Footer
   =========================== */
.footer {
  border-top: 1px solid rgba(136, 136, 128, 0.15);
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-family: var(--font-en-sans);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--color-muted);
  opacity: 0.6;
  line-height: 1.8;
}

.footer-tagline {
  font-family: var(--font-serif-jp);
  font-size: 0.75rem;
  color: var(--color-muted);
  opacity: 0.5;
  letter-spacing: 0.1em;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
  :root { --nav-height: 60px; }

  .nav { padding: 0 24px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  section { padding: 80px 24px; }
  section.full-width { padding: 80px 0; }
  .section-inner { padding: 0 24px; }

  #home { padding: 0 24px; }

  .hero-name-jp { letter-spacing: 0.3em; }
  .hero-sns { left: 24px; bottom: 32px; }
  .hero-scroll { right: 24px; bottom: 32px; }

  .about-body {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-photo-wrap {
    position: static;
    max-width: 280px;
    margin: 0 auto;
  }

  .timeline { padding-left: 24px; }
  .timeline-item { grid-template-columns: 60px 1fr; gap: 16px; }

  #works { padding: 80px 0; }
  .works-inner { padding: 0 24px; }
  .works-grid { grid-template-columns: 1fr; gap: 2px; }
  .work-overlay { opacity: 1; background: rgba(13,13,13,0.7); }

  #zazen { padding: 80px 0; }
  .zazen-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 0 24px;
  }

  .writing-grid { grid-template-columns: 1fr; }
  .writing-card { padding: 28px 24px; }

  .links-grid { max-width: 100%; }

  .footer {
    flex-direction: column;
    gap: 16px;
    text-align: center;
    padding: 40px 24px;
  }
}

@media (min-width: 1200px) {
  .nav { padding: 0 60px; }
  section { padding: 140px 60px; }
  .section-inner { padding: 0 60px; }
  .works-inner, .zazen-inner, .links-grid { padding: 0 60px; }
}