/* ============================================================
   たのしいはなし — Contemporary Art Direction
   ============================================================ */

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

/* === Custom Properties === */
:root {
  --bg: #050505;
  --surface: #0c0c0c;
  --text: #d4d4d4;
  --text-muted: #666;
  --text-dim: #393939;
  --white: #f0f0f0;
  --border: #1a1a1a;
  --accent: #fff;
  --mono: "Space Mono", "SF Mono", "Fira Code", monospace;
  --sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --mx: 50vw;
  --my: 50vh;
}

/* === Base === */
html {
  font-size: 16px;
  line-height: 1.8;
  scroll-behavior: smooth;
}

body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  cursor: crosshair;
}

::selection {
  background: var(--white);
  color: var(--bg);
}

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

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

/* === Noise Overlay === */
.noise {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.03;
  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-repeat: repeat;
}

/* === Cursor Glow === */
body::before {
  content: "";
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.015) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  left: var(--mx);
  top: var(--my);
  pointer-events: none;
  z-index: 2;
  transition: left 0.3s var(--ease-out), top 0.3s var(--ease-out);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  mix-blend-mode: difference;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  padding: 0 4vw;
}

.site-title {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  position: relative;
}

.site-nav {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--white);
  transition: opacity 0.4s var(--ease);
}

.nav-link:hover {
  opacity: 0.4;
}

.nav-index {
  font-family: var(--mono);
  font-size: 0.6rem;
  opacity: 0.4;
}

.nav-name {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 0 4vw;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 4vw;
  right: 4vw;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

.hero-inner {
  width: 100%;
  max-width: 1400px;
}

.hero-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.hero-title {
  font-weight: 900;
  line-height: 1.05;
}

.hero-line {
  display: block;
  font-size: clamp(4rem, 12vw, 11rem);
  color: var(--white);
  letter-spacing: -0.04em;
}

.hero-line--indent {
  padding-left: clamp(2rem, 8vw, 10rem);
}

.hero-dot {
  color: var(--text-dim);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 3rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.hero-divider {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--text-dim);
}

/* ============================================================
   SECTIONS
   ============================================================ */
.home-section {
  padding: 6rem 4vw;
  position: relative;
}

.home-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 4vw;
  right: 4vw;
  height: 1px;
  background: var(--border);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 3rem;
}

.section-number {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.section-name {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.section-line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.section-link {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.4s var(--ease);
}

.section-link:hover {
  color: var(--white);
}

.home-section .post-list,
.home-section .works-grid {
  padding: 0;
}

/* ============================================================
   PAGE HEADER (list pages)
   ============================================================ */
.page-header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 0 4vw;
  margin-bottom: 4rem;
  padding-top: 8rem;
}

.page-header-number {
  font-family: var(--mono);
  font-size: 5rem;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  letter-spacing: -0.04em;
}

.page-header-title {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-header-count {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  margin-left: auto;
  padding-right: 4vw;
}

/* ============================================================
   BLOG POST LIST
   ============================================================ */
.post-list {
  display: flex;
  flex-direction: column;
  padding: 0 4vw;
}

.post-card {
  border-bottom: 1px solid var(--border);
}

.post-card:last-child {
  border-bottom: none;
}

.post-card-link {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  grid-template-rows: auto auto;
  column-gap: 3rem;
  row-gap: 0.2rem;
  align-items: baseline;
  padding: 2rem 0;
  transition: background 0.4s var(--ease);
  position: relative;
}

.post-card-link:hover {
  background: rgba(255, 255, 255, 0.02);
}

.post-card-link time {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  grid-row: 1;
}

.post-card-link h2,
.post-card-link h3 {
  font-size: 1.15rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text);
  grid-row: 1;
  grid-column: 2;
  transition: color 0.3s var(--ease);
}

.post-card-link:hover h2,
.post-card-link:hover h3 {
  color: var(--white);
}

.post-card-link p {
  font-size: 0.85rem;
  color: var(--text-dim);
  grid-row: 2;
  grid-column: 2;
  line-height: 1.6;
  margin-top: 0.3rem;
}

.post-arrow {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--text-dim);
  grid-row: 1;
  grid-column: 3;
  transition: transform 0.4s var(--ease), color 0.3s var(--ease);
}

.post-card-link:hover .post-arrow {
  transform: translateX(6px);
  color: var(--white);
}

/* ============================================================
   BLOG SINGLE
   ============================================================ */
.post-single {
  padding: 0 4vw;
}

.post-header {
  padding-top: 10rem;
  padding-bottom: 3rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  max-width: 800px;
}

.post-header-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.post-header-sep {
  opacity: 0.3;
}

.post-header h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--white);
}

.post-content {
  max-width: 680px;
}

.post-content p {
  margin-bottom: 1.5rem;
  font-weight: 300;
}

.post-content h2 {
  font-size: 1.4rem;
  font-weight: 900;
  margin: 4rem 0 1.2rem;
  color: var(--white);
  letter-spacing: -0.01em;
}

.post-content h3 {
  font-size: 1.1rem;
  font-weight: 900;
  margin: 3rem 0 1rem;
  color: var(--white);
}

.post-content ul,
.post-content ol {
  margin: 0 0 1.5rem 1.5rem;
}

.post-content blockquote {
  border-left: 3px solid var(--white);
  padding: 1rem 0 1rem 2rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.post-content code {
  font-family: var(--mono);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.15rem 0.5rem;
  font-size: 0.85em;
}

.post-content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1.5rem 2rem;
  overflow-x: auto;
  margin: 2rem 0;
  font-size: 0.85rem;
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
}

.post-content a {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--text-dim);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.3s var(--ease);
}

.post-content a:hover {
  text-decoration-color: var(--white);
}

/* === Post Nav === */
.post-nav {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  max-width: 680px;
}

.post-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  transition: color 0.3s var(--ease);
}

.post-nav a:hover {
  color: var(--white);
}

.post-nav-arrow {
  transition: transform 0.4s var(--ease);
}

.post-nav a:hover .post-nav-arrow {
  transform: translateX(-4px);
}

/* ============================================================
   WORKS GRID
   ============================================================ */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2px;
  padding: 0 4vw;
}

.work-card {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--surface);
}

.work-card-img {
  overflow: hidden;
}

.work-card-img img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.1);
  transition: filter 0.6s var(--ease), transform 0.6s var(--ease);
}

.work-card:hover .work-card-img img {
  filter: grayscale(0%) contrast(1);
  transform: scale(1.03);
}

.work-card-placeholder {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-dim);
  letter-spacing: -0.02em;
  transition: color 0.4s var(--ease), border-color 0.4s var(--ease);
}

.work-card:hover .work-card-placeholder {
  color: var(--text-muted);
  border-color: var(--text-dim);
}

.work-card-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--border);
}

.work-card-title {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: color 0.3s var(--ease);
}

.work-card:hover .work-card-title {
  color: var(--white);
}

.work-card-date {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
}

/* ============================================================
   WORK SINGLE
   ============================================================ */
.work-single {
  padding: 0 4vw;
}

.work-image {
  margin-bottom: 3rem;
  max-width: 560px;
}

.work-image img {
  border: 1px solid var(--border);
}

/* ============================================================
   3D VIEWER
   ============================================================ */
.work-viewer-3d {
  margin-bottom: 3rem;
}

.viewer-3d-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-width: 760px;
  background: #111;
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: grab;
}

.viewer-3d-container:active {
  cursor: grabbing;
}

.viewer-3d-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111;
  z-index: 10;
  transition: opacity 0.4s ease;
}

.viewer-loading-text {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.viewer-controls-hint {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.6rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.viewer-controls-hint .sep {
  opacity: 0.4;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-body {
  max-width: 560px;
  line-height: 1.9;
}

.about-body p {
  margin-bottom: 1rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  padding: 3rem 4vw;
  border-top: 1px solid var(--border);
  margin-top: 6rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-mark {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.footer-title {
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 3px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--text-dim);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-label { animation: fadeIn 0.8s var(--ease) 0.2s both; }
.hero-line:nth-child(1) { animation: fadeIn 0.8s var(--ease) 0.4s both; }
.hero-line:nth-child(2) { animation: fadeIn 0.8s var(--ease) 0.6s both; }
.hero-meta { animation: fadeIn 0.8s var(--ease) 0.8s both; }

@keyframes slideIn {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.hero::after {
  transform-origin: left;
  animation: slideIn 1s var(--ease) 1s both;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .header-inner {
    height: 60px;
  }

  .site-nav {
    gap: 1.5rem;
  }

  .nav-index {
    display: none;
  }

  .hero {
    min-height: 75vh;
  }

  .hero-line {
    font-size: clamp(2.5rem, 14vw, 5rem);
  }

  .hero-line--indent {
    padding-left: 1.5rem;
  }

  .hero-meta {
    flex-wrap: wrap;
    gap: 0.8rem;
  }

  .hero-divider {
    width: 30px;
  }

  .home-section {
    padding: 4rem 4vw;
  }

  .post-card-link {
    grid-template-columns: 1fr auto;
    gap: 0.2rem 1rem;
  }

  .post-card-link time {
    grid-column: 1 / -1;
  }

  .post-card-link h2,
  .post-card-link h3 {
    grid-column: 1;
  }

  .post-card-link p {
    grid-column: 1 / -1;
  }

  .works-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2px;
  }

  .page-header {
    padding-top: 6rem;
    flex-wrap: wrap;
  }

  .page-header-number {
    font-size: 3rem;
  }

}

@media (max-width: 480px) {
  .site-nav {
    gap: 1rem;
  }

  .nav-name {
    font-size: 0.6rem;
  }

  .works-grid {
    grid-template-columns: 1fr 1fr;
  }

  .post-header h1 {
    font-size: 1.8rem;
  }
}