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

:root {
  --bg: #08080c;
  --bg-subtle: #0e0e14;
  --surface: rgba(255, 255, 255, 0.025);
  --border: rgba(255, 255, 255, 0.06);
  --text: #d4d0c8;
  --text-dim: #6b6660;
  --accent: #b8956a;
  --accent-glow: rgba(184, 149, 106, 0.15);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ─── Scenes ─── */

.scene {
  position: fixed;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1s ease;
}

.scene.active {
  opacity: 1;
  pointer-events: all;
}

/* ─── Studio ─── */

#studio {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  z-index: 5;
}

/* ─── Nav ─── */

#nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 3rem;
  background: linear-gradient(to bottom, var(--bg) 60%, transparent);
}

.nav-logo {
  font-size: 1rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s;
}

.nav-logo:hover {
  color: var(--accent);
}

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

.nav-links a {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

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

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

/* ─── Studio Sections ─── */

.studio-section {
  display: none;
  min-height: 100vh;
  padding: 6rem 3rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  animation: sectionIn 0.6s ease forwards;
}

.studio-section.active {
  display: block;
}

@keyframes sectionIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-header {
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 0.5em;
}

.section-desc {
  color: var(--text-dim);
  font-size: 0.9rem;
  font-style: italic;
}

/* ─── Gallery ─── */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
}

.art-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.4s ease;
}

.art-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.card-canvas-wrap {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg);
}

.card-canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.card-info {
  padding: 1.2rem 1.5rem;
}

.card-info h3 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 0.3em;
}

.card-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ─── Writings ─── */

.writing-piece {
  max-width: 640px;
}

.writing-title {
  font-size: 1.4rem;
  font-weight: 400;
  margin-bottom: 2rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.writing-body p {
  margin-bottom: 1.5em;
  font-size: 1.05rem;
  line-height: 2;
  color: var(--text);
}

.writing-body p:first-child {
  font-size: 1.15rem;
}

/* ─── Experiments ─── */

.experiment-card {
  max-width: 900px;
  margin-bottom: 4rem;
}

.experiment-title {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 0.6em;
}

.experiment-desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  max-width: 520px;
}

.experiment-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.experiment-stage canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.experiment-input {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(80%, 480px);
  padding: 0.7em 1.2em;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  color: var(--text);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-align: center;
  outline: none;
  backdrop-filter: blur(8px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.experiment-input::placeholder {
  color: var(--text-dim);
  font-style: italic;
}

.experiment-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.experiment-clear-btn {
  position: absolute;
  bottom: 1rem;
  right: 1.2rem;
  padding: 0.4em 1.2em;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  color: var(--text-dim);
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.3s;
  backdrop-filter: blur(4px);
}

.experiment-clear-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── Code Poetry ─── */

.poem-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 2.5rem;
  max-width: 640px;
  overflow: hidden;
}

.code-poem {
  padding: 2rem 2.5rem;
  font-family: 'SF Mono', 'Fira Code', 'JetBrains Mono', 'Menlo', monospace;
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  tab-size: 2;
}

.code-poem code {
  font-family: inherit;
}

.code-poem .kw { color: #c9a0dc; }
.code-poem .fn { color: #7eb8da; }
.code-poem .str { color: #b8956a; }
.code-poem .num { color: #d4976c; }
.code-poem .param { color: #9bb891; }
.code-poem .cm { color: #555; font-style: italic; }

.poem-note {
  padding: 1rem 2.5rem 1.2rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
  border-top: 1px solid var(--border);
}

/* ─── Viewer ─── */

.viewer {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.viewer.active {
  opacity: 1;
  pointer-events: all;
}

.viewer canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.viewer-close {
  position: absolute;
  top: 1.5rem;
  right: 2rem;
  z-index: 210;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.8rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.3s;
}

.viewer-close:hover {
  color: var(--text);
}

.viewer-info {
  position: absolute;
  bottom: 2rem;
  left: 3rem;
  z-index: 210;
}

.viewer-info h3 {
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 0.3em;
}

.viewer-info p {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ─── Nav Toggle (hamburger) ─── */

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  margin: -10px -10px -10px 0;
  z-index: 110;
  -webkit-tap-highlight-color: transparent;
}

.nav-overlay {
  display: none;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-dim);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ─── Responsive ─── */

@media (max-width: 768px) {
  #nav {
    padding: 1rem 1.5rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: min(280px, 75vw);
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-left: 1px solid var(--border);
    padding: 5rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 105;
    overflow-y: auto;
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 0.9rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
  }

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

  .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 104;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
  }

  .nav-overlay.active {
    opacity: 1;
    pointer-events: all;
  }

  .studio-section {
    padding: 4.5rem 1.2rem 3rem;
  }

  .section-header {
    margin-bottom: 2.5rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .art-card:hover {
    transform: none;
    box-shadow: none;
  }

  .card-info {
    padding: 1rem 1.2rem;
  }

  .experiment-card {
    margin-bottom: 3rem;
  }

  .experiment-stage {
    aspect-ratio: 4 / 3;
  }

  .experiment-input {
    width: min(90%, 480px);
    font-size: 0.85rem;
    padding: 0.6em 1em;
    bottom: 1rem;
  }

  .experiment-clear-btn {
    bottom: 0.8rem;
    right: 0.8rem;
    font-size: 0.7rem;
    padding: 0.35em 0.9em;
  }

  .code-poem {
    padding: 1.5rem 1.2rem;
    font-size: 0.78rem;
  }

  .poem-note {
    padding: 1rem 1.2rem 1.2rem;
  }

  .poem-footer {
    padding: 0.8rem 1.2rem 1rem;
  }

  .viewer-close {
    top: 1rem;
    right: 1rem;
    width: 44px;
    height: 44px;
    font-size: 2rem;
  }

  .viewer-info {
    left: 1.2rem;
    right: 1.2rem;
    bottom: 1.2rem;
  }

  .viewer-info h3 {
    font-size: 1rem;
  }

  .viewer-info p {
    font-size: 0.75rem;
  }

  .writing-piece {
    max-width: 100%;
  }

  .writing-body p {
    font-size: 1rem;
    line-height: 1.9;
  }

  .writing-body p:first-child {
    font-size: 1.05rem;
  }

  .poem-card {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  #nav {
    padding: 0.8rem 1rem;
  }

  .nav-logo {
    font-size: 0.9rem;
  }

  .studio-section {
    padding: 4rem 1rem 2rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .section-desc {
    font-size: 0.82rem;
  }

  .gallery-grid {
    gap: 1.2rem;
  }

  .card-canvas-wrap {
    aspect-ratio: 3 / 2;
  }

  .card-info {
    padding: 0.8rem 1rem;
  }

  .card-info-text h3 {
    font-size: 0.9rem;
  }

  .card-info-text p {
    font-size: 0.75rem;
  }

  .experiment-stage {
    aspect-ratio: 1 / 1;
    border-radius: 4px;
  }

  .experiment-title {
    font-size: 1.05rem;
  }

  .experiment-desc {
    font-size: 0.82rem;
  }

  .writing-title {
    font-size: 1.2rem;
  }

  .writing-body p {
    font-size: 0.95rem;
    line-height: 1.85;
  }

  .code-poem {
    padding: 1.2rem 1rem;
    font-size: 0.72rem;
    line-height: 1.7;
  }

  .viewer-info {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }
}

/* ─── Like Buttons ─── */

.like-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 0.75rem;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 100px;
  transition: all 0.25s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.like-btn:hover {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.03);
}

.like-btn.liked .like-icon {
  color: var(--accent);
}

.like-icon {
  font-size: 0.85rem;
  transition: transform 0.25s ease, color 0.25s ease;
}

.like-btn.like-pop .like-icon {
  transform: scale(1.4);
}

.like-count {
  font-size: 0.7rem;
  min-width: 1em;
}

.card-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.card-info-text h3 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-bottom: 0.3em;
}

.card-info-text p {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
}

.writing-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.writing-header .like-btn {
  flex-shrink: 0;
}

.poem-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 2.5rem 1rem;
  border-top: 1px solid var(--border);
}

.poem-footer .poem-note-text {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ─── Scrollbar ─── */

::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
}