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

:root {
  --bg: #1a0a2e;
  --bg-light: #2d1b4e;
  --fg: #e8e0f5;
  --fg-muted: #a89ec7;
  --purple: #7c3aed;
  --teal: #2dd4bf;
  --pink: #ec4899;
  --violet: #a855f7;
  --purple-glow: rgba(124, 58, 237, 0.4);
  --teal-glow: rgba(45, 212, 191, 0.3);
  --pink-glow: rgba(236, 72, 153, 0.3);
  --transition-colors: background-color 0.6s ease, color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease, text-shadow 0.6s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color 0.6s ease, color 0.6s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  outline: none;
}

button, a, input, [role="button"] {
  -webkit-tap-highlight-color: transparent;
}

a { color: var(--teal); text-decoration: none; transition: color 0.3s, border-color 0.3s; }
a:hover { color: var(--pink); }

/* Page Transition Overlay */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.page-transition.is-active {
  opacity: 1;
  pointer-events: all;
}
.page-transition.is-fading {
  opacity: 0;
}

/* Theme Randomizer Button */
#theme-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--violet);
  background: linear-gradient(135deg, var(--purple), var(--pink), var(--teal));
  background-size: 300% 300%;
  animation: themePulse 3s ease-in-out infinite, themeGradient 4s ease infinite;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  box-shadow: 0 0 20px var(--purple-glow), 0 0 40px rgba(124,58,237,0.15);
  transition: transform 0.3s, box-shadow 0.3s, var(--transition-colors);
}
#theme-btn:hover {
  transform: scale(1.12);
  box-shadow: 0 0 30px var(--purple-glow), 0 0 60px rgba(124,58,237,0.25);
}
#theme-btn:active { transform: scale(0.95); }

/* Language Toggle Button */
#lang-btn {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  z-index: 1000;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(107, 33, 168, 0.3);
  background: rgba(26, 10, 46, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  transition: transform 0.3s, opacity 0.5s ease, color 0.3s, border-color 0.3s, var(--transition-colors);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}
#lang-btn.is-visible {
  opacity: 1;
  pointer-events: auto;
}
#lang-btn span {
  position: relative;
  z-index: 1;
  transition: transform 0.4s cubic-bezier(0.7, 0, 0.3, 1), opacity 0.3s ease;
}
#lang-btn:hover {
  color: var(--fg);
  border-color: var(--purple);
  transform: scale(1.08);
}
#lang-btn:active { transform: scale(0.95); }
#lang-btn.morphing span {
  animation: textFlip 0.5s cubic-bezier(0.7, 0, 0.3, 1);
}
@keyframes langSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes textFlip {
  0%   { transform: rotateX(0deg) scale(1); opacity: 1; }
  40%  { transform: rotateX(90deg) scale(0.6); opacity: 0; }
  60%  { transform: rotateX(-90deg) scale(0.6); opacity: 0; }
  100% { transform: rotateX(0deg) scale(1); opacity: 1; }
}
.portal-active #lang-btn, .portal-active #theme-btn { pointer-events: none; opacity: 0.3; }

@keyframes themePulse {
  0%, 100% { box-shadow: 0 0 20px var(--purple-glow), 0 0 40px rgba(124,58,237,0.15); }
  50% { box-shadow: 0 0 30px var(--purple-glow), 0 0 60px rgba(124,58,237,0.3); }
}
@keyframes themeGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Contrast Toggle */
#contrast-btn {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--fg-muted);
  background: rgba(0,0,0,0.4);
  color: var(--fg-muted);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-colors);
  backdrop-filter: blur(8px);
}
#contrast-btn:hover { border-color: var(--violet); color: var(--fg); }

/* Sound Toggle */
#sound-btn {
  position: fixed;
  top: 1rem;
  right: 3.5rem;
  z-index: 1000;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--fg-muted);
  background: rgba(0,0,0,0.4);
  color: var(--fg-muted);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-colors);
  backdrop-filter: blur(8px);
}
#sound-btn:hover { border-color: var(--violet); color: var(--fg); }
#sound-btn.is-on { color: var(--teal); border-color: var(--teal); }

/* Drift Toggle */
#drift-btn {
  position: fixed;
  top: 1rem;
  right: 6rem;
  z-index: 1000;
  width: 50px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--fg-muted);
  background: rgba(0,0,0,0.4);
  color: var(--fg-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-colors);
  backdrop-filter: blur(8px);
}
#drift-btn:hover { border-color: var(--violet); color: var(--fg); }
#drift-btn.is-on { color: var(--pink); border-color: var(--pink); box-shadow: 0 0 15px var(--pink-glow); }

/* High Contrast Mode */
body.high-contrast {
  --bg: #0d0520;
  --bg-light: #1a0f35;
  --fg: #f5f0ff;
  --fg-muted: #c9bfe8;
}
body.high-contrast .nav-card,
body.high-contrast .exp-card {
  border-color: rgba(124, 58, 237, 0.4);
}
body.high-contrast .blog-entry,
body.high-contrast footer {
  border-color: rgba(124, 58, 237, 0.3);
}
body.high-contrast .hero-title {
  text-shadow: 0 0 60px var(--purple-glow), 0 0 120px var(--teal-glow), 0 0 4px rgba(255,255,255,0.3);
}

/* Hero / Canvas */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#cosmic-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  pointer-events: none;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--fg);
  text-shadow: 0 0 60px var(--purple-glow), 0 0 120px var(--teal-glow);
  margin-bottom: 0.5rem;
  transition: transform 1.5s cubic-bezier(0.7, 0, 0.3, 1), opacity 0.8s ease, var(--transition-colors);
}

.portal-trigger {
  text-decoration: none;
  pointer-events: auto;
  display: inline-block;
}

.portal-active .hero {
  pointer-events: none;
}
.portal-active #cosmic-canvas {
  transform: scale(20);
  filter: brightness(2.5) saturate(1.5);
  transition: transform 2.5s cubic-bezier(0.7, 0, 0.3, 1), filter 2s ease;
}
.portal-active .hero-content,
.portal-active .scroll-hint,
.portal-active .nav-section,
.portal-active footer,
.portal-active #theme-btn,
.portal-active #contrast-btn {
  opacity: 0;
  transition: opacity 0.8s ease;
}

.hero-sub {
  font-size: clamp(0.9rem, 2vw, 1.2rem);
  color: var(--fg-muted);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  transition: var(--transition-colors);
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--fg-muted);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

/* Navigation */
.nav-section {
  padding: 6rem 2rem;
  text-align: center;
}

.nav-section h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 300;
  margin-bottom: 2rem;
  text-shadow: 0 0 30px var(--purple-glow);
  letter-spacing: 0.08em;
  transition: var(--transition-colors);
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.nav-card {
  background: var(--bg-light);
  border: 1px solid rgba(107, 33, 168, 0.2);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease, background-color 0.6s ease;
  text-decoration: none;
  display: block;
}

.nav-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 40px var(--purple-glow);
  border-color: var(--purple);
}

.nav-card h3 {
  font-size: 1.3rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
  color: var(--fg);
  transition: var(--transition-colors);
}

.nav-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  transition: var(--transition-colors);
}

.nav-card .card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--fg-muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(107, 33, 168, 0.15);
  transition: var(--transition-colors);
}

footer a { color: var(--purple); }
footer a:hover { color: var(--pink); }
.footer-socials {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}
.footer-socials a {
  color: var(--fg-muted);
  transition: color 0.3s, transform 0.3s, filter 0.3s;
  display: flex;
  align-items: center;
}
.footer-socials a:hover {
  color: var(--teal);
  transform: translateY(-2px);
  filter: drop-shadow(0 0 8px var(--teal-glow));
}

/* Blog */
.blog-list {
  max-width: 700px;
  margin: 0 auto;
  padding: 6rem 2rem 3rem;
}

.blog-list h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 300;
  text-align: center;
  margin-bottom: 3rem;
  text-shadow: 0 0 30px var(--purple-glow);
  letter-spacing: 0.1em;
  transition: var(--transition-colors);
}

.blog-entry {
  position: relative;
  padding: 3rem 2rem;
  margin-bottom: 2rem;
  border-radius: 20px;
  overflow: hidden;
  border-bottom: 1px solid rgba(107, 33, 168, 0.15);
  transition: transform 0.4s ease;
}

.blog-bg-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.4;
}

.blog-entry-content {
  position: relative;
  z-index: 1;
  pointer-events: none;
}
.blog-entry-content a { pointer-events: auto; }

.blog-entry:hover {
  transform: scale(1.02);
}

.blog-entry:last-child { border-bottom: none; }

.blog-entry h2 { font-weight: 400; margin-bottom: 0.3rem; }
.blog-entry .date { color: var(--fg-muted); font-size: 0.85rem; margin-bottom: 0.5rem; }
.blog-entry .excerpt { color: var(--fg-muted); line-height: 1.6; }

/* Blog Post */
.blog-post {
  max-width: 680px;
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
  transition: color 0.3s;
  z-index: 10;
  position: relative;
}
.back-link:hover { color: var(--teal); }

.blog-post .back-link { margin-bottom: 3rem; }

.blog-post h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 30px var(--purple-glow);
  transition: var(--transition-colors);
}

.blog-post .meta {
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.blog-post .content {
  font-size: 1.08rem;
  line-height: 1.85;
}

.blog-post .content p { margin-bottom: 1.5rem; }

.blog-post .content blockquote {
  border-left: 2px solid var(--purple);
  padding-left: 1.5rem;
  margin: 2rem 0;
  color: var(--fg-muted);
  font-style: italic;
  transition: var(--transition-colors);
}

.blog-post .footnote-divider {
  border: none;
  border-top: 1px solid var(--fg-muted);
  opacity: 0.3;
  margin: 3rem 0 1.5rem;
}

.blog-post .footnote {
  color: var(--fg-muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Experiments */
.experiments-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
}

.experiments-page h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 300;
  text-align: center;
  margin-bottom: 3rem;
  text-shadow: 0 0 30px var(--purple-glow);
  letter-spacing: 0.1em;
  transition: var(--transition-colors);
}

.exp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.exp-card {
  background: var(--bg-light);
  border: 1px solid rgba(107, 33, 168, 0.2);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.4s, box-shadow 0.4s, border-color 0.4s, background-color 0.6s ease;
}

.exp-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px var(--teal-glow);
  border-color: var(--teal);
}

.exp-card h3 { font-weight: 400; margin-bottom: 0.3rem; }
.exp-card .tag { color: var(--teal); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; }
.exp-card p { color: var(--fg-muted); margin-top: 0.8rem; font-size: 0.95rem; }

.exp-subcategory {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(107, 33, 168, 0.15);
  text-align: center;
}
.exp-subcategory h2 {
  font-size: clamp(1.3rem, 3.5vw, 1.8rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  text-shadow: 0 0 25px var(--purple-glow);
  color: var(--fg);
  margin-bottom: 1rem;
  transition: var(--transition-colors);
}
.exp-subcategory-desc {
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  opacity: 0.7;
  transition: var(--transition-colors);
}

/* Experiment Fullscreen View */
.experiment-view {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.experiment-view #cosmic-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
}

.experiment-overlay {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100vh;
  padding: 1.5rem;
  pointer-events: none;
}

.experiment-overlay a,
.experiment-overlay .exp-info {
  pointer-events: auto;
}

.experiment-overlay .exp-back {
  display: inline-block;
  color: var(--fg-muted);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  opacity: 0.7;
  transition: opacity 0.3s, color 0.3s;
}
.experiment-overlay .exp-back:hover {
  opacity: 1;
  color: var(--teal);
}

.experiment-overlay .exp-info {
  max-width: 480px;
}
.experiment-overlay .exp-info h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  text-shadow: 0 0 40px var(--purple-glow);
 margin-bottom: 0.5rem;
  transition: var(--transition-colors);
}
.experiment-overlay .exp-info p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.6;
  transition: var(--transition-colors);
}
.experiment-overlay .exp-info .tag {
  color: var(--teal);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.experiment-overlay .exp-source {
  display: inline-block;
  color: var(--fg-muted);
  font-size: 0.85rem;
  opacity: 0.6;
  transition: opacity 0.3s, color 0.3s;
  align-self: flex-end;
}
.experiment-overlay .exp-source:hover {
  opacity: 1;
  color: var(--purple);
}

/* Experiment Details Toggle */
.exp-details-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--fg-muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  pointer-events: auto;
  transition: border-color 0.3s, color 0.3s, var(--transition-colors);
  backdrop-filter: blur(8px);
  margin-top: 1rem;
}
.exp-details-toggle:hover {
  border-color: var(--violet);
  color: var(--fg);
}
.exp-details-toggle .chevron {
  display: inline-block;
  transition: transform 0.3s ease;
  font-size: 0.7rem;
}
.exp-details-toggle.is-open .chevron {
  transform: rotate(180deg);
}

.exp-details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, opacity 0.4s ease;
  opacity: 0;
}
.exp-details.is-open {
  max-height: 600px;
  opacity: 1;
}
.exp-details-inner {
  padding-top: 1.5rem;
  max-width: 520px;
}
.exp-details-inner h2 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.5rem;
  transition: var(--transition-colors);
}
.exp-details-inner h2:not(:first-child) {
  margin-top: 1.5rem;
}
.exp-details-inner p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  transition: var(--transition-colors);
}

/* ── Intro Sequence ─────────────────────────────────────────────────── */
#intro-sequence {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

#intro-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#intro-thought {
  position: relative;
  z-index: 1;
  text-align: center;
  opacity: 0;
  transform: translateY(12px) scale(0.97);
  transform: translateY(12px) scale(0.97);
  transition: opacity 1.8s ease, transform 1.8s ease;
  pointer-events: none;
}
#intro-thought.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
#intro-thought::before {
  content: '';
  display: block;
  width: 40px;
  height: 20px;
  margin: 0 auto 1rem;
  background: radial-gradient(ellipse at 50% 0%, rgba(180,150,255,0.1), transparent 70%);
  border-radius: 50%;
}

#intro-thought-text {
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: rgba(200, 185, 230, 0.75);
  font-style: italic;
  text-shadow: 0 0 30px rgba(140, 120, 200, 0.2);
}

#intro-prompt {
  position: relative;
  z-index: 1;
  text-align: center;
  margin-top: 2.5rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 1.5s ease 0.3s, transform 1.5s ease 0.3s;
}
#intro-prompt.visible {
  opacity: 1;
  transform: translateY(0);
}

#intro-embark {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(140, 120, 200, 0.06);
  border: 1px solid rgba(140, 120, 200, 0.2);
  color: rgba(200, 185, 230, 0.75);
  padding: 0.8rem 2.2rem;
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  border-radius: 40px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.5s ease;
}
#intro-embark:hover {
  background: rgba(140, 120, 200, 0.12);
  border-color: rgba(140, 120, 200, 0.4);
  box-shadow: 0 0 25px rgba(140, 120, 200, 0.12);
  transform: scale(1.04);
}
#intro-embark:active {
  transform: scale(0.98);
}

#intro-restart {
  background: rgba(140, 120, 200, 0.06);
  border: 1px solid rgba(140, 120, 200, 0.2);
  color: rgba(200, 185, 230, 0.75);
  padding: 0.8rem 2.2rem;
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  border-radius: 40px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.5s ease;
  margin-top: 0.8rem;
  -webkit-appearance: none;
  appearance: none;
}
#intro-restart:hover {
  background: rgba(140, 120, 200, 0.12);
  border-color: rgba(140, 120, 200, 0.4);
  box-shadow: 0 0 25px rgba(140, 120, 200, 0.12);
  transform: scale(1.04);
}
#intro-restart:active {
  transform: scale(0.98);
}

/* ── Soul Name Modal ── */
#soul-modal {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 3, 12, 0.55);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}
#soul-modal.visible {
  opacity: 1;
  pointer-events: all;
}
/* Mandala canvas fills the full backdrop, sits behind the card */
#soul-mandala-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
#soul-modal-card {
  position: relative;
  z-index: 1;
  background: rgba(8, 6, 20, 0.72);
  border: 1px solid rgba(140, 120, 200, 0.22);
  border-radius: 28px;
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  padding: 2.8rem 2.4rem 2.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
  max-width: min(320px, 82vw);
  width: 100%;
  box-shadow:
    0 0 80px rgba(120, 80, 255, 0.08),
    0 16px 64px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(140, 100, 255, 0.10),
    0 0 0 7px rgba(120, 80, 220, 0.05),
    0 0 0 14px rgba(100, 70, 200, 0.025);
  transform: translateY(16px) scale(0.96);
  transition: transform 0.6s cubic-bezier(0.2, 0, 0, 1);
}
#soul-modal.visible #soul-modal-card {
  transform: translateY(0) scale(1);
}
/* Prompt — first to appear */
#soul-modal-prompt {
  font-size: clamp(1.05rem, 3vw, 1.3rem);
  font-weight: 200;
  letter-spacing: 0.16em;
  color: rgba(200, 185, 230, 0.58);
  text-align: center;
  margin: 0;
  text-shadow: 0 0 40px rgba(140, 120, 200, 0.18);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 1.0s ease, transform 1.0s ease;
}
#soul-modal-prompt.revealed {
  opacity: 1;
  transform: translateY(0);
}
/* Input — second to appear */
#soul-modal-input {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(140, 120, 200, 0.05);
  border: 1px solid rgba(140, 120, 200, 0.2);
  color: rgba(220, 210, 245, 0.92);
  padding: 0.78rem 1.8rem;
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  font-weight: 300;
  letter-spacing: 0.2em;
  border-radius: 40px;
  cursor: text;
  font-family: inherit;
  text-align: center;
  transition: border-color 0.4s ease, background 0.4s ease, box-shadow 0.4s ease,
              opacity 0.8s ease, transform 0.8s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  outline: none;
  width: 100%;
  -webkit-user-select: text;
  user-select: text;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}
#soul-modal-input::placeholder {
  color: rgba(200, 185, 230, 0.18);
  letter-spacing: 0.1em;
}
#soul-modal-input:focus {
  border-color: rgba(140, 120, 200, 0.52);
  background: rgba(140, 120, 200, 0.09);
  box-shadow: 0 0 28px rgba(140, 120, 200, 0.14);
}
#soul-modal-input.revealed {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}
/* Confirm button — last to appear */
#soul-modal-confirm {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(140, 120, 200, 0.06);
  border: 1px solid rgba(140, 120, 200, 0.2);
  color: rgba(200, 185, 230, 0.7);
  padding: 0.72rem 2.2rem;
  font-size: clamp(0.82rem, 2vw, 0.95rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  border-radius: 40px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease,
              transform 0.3s ease, opacity 0.7s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
}
#soul-modal-confirm.revealed {
  opacity: 1;
  pointer-events: all;
}
#soul-modal-confirm:hover {
  background: rgba(140, 120, 200, 0.13);
  border-color: rgba(140, 120, 200, 0.42);
  box-shadow: 0 0 22px rgba(140, 120, 200, 0.12);
  transform: scale(1.03);
}
#soul-modal-confirm:active {
  transform: scale(0.97);
}

/* ── Page load: fade from black ── */
#screen-fade {
  position: fixed;
  inset: 0;
  z-index: 8000;   /* above intro (500) and modals (600), below page-transition (9999) */
  background: #000;
  opacity: 1;
  pointer-events: none;
  transition: opacity 2.4s ease;
}
#screen-fade.done {
  opacity: 0;
}

/* ── Sound preference modal ── */
#sound-modal {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 3, 12, 0.55);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}
#sound-modal.visible {
  opacity: 1;
  pointer-events: all;
}
#sound-mandala-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
#sound-modal-card {
  position: relative;
  z-index: 1;
  background: rgba(8, 6, 20, 0.72);
  border: 1px solid rgba(140, 120, 200, 0.22);
  border-radius: 28px;
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  padding: 2.8rem 2.4rem 2.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  max-width: min(340px, 86vw);
  width: 100%;
  box-shadow:
    0 0 80px rgba(120, 80, 255, 0.08),
    0 16px 64px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(140, 100, 255, 0.10),
    0 0 0 7px rgba(120, 80, 220, 0.05),
    0 0 0 14px rgba(100, 70, 200, 0.025);
  transform: translateY(16px) scale(0.96);
  transition: transform 0.6s cubic-bezier(0.2, 0, 0, 1);
}
#sound-modal.visible #sound-modal-card {
  transform: translateY(0) scale(1);
}
#sound-modal-icon {
  font-size: 2.2rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
#sound-modal-icon.revealed { opacity: 1; transform: none; }
#sound-modal-title {
  font-size: clamp(1.0rem, 3vw, 1.25rem);
  font-weight: 200;
  letter-spacing: 0.16em;
  color: rgba(200, 185, 230, 0.6);
  text-align: center;
  margin: 0;
  text-shadow: 0 0 40px rgba(140, 120, 200, 0.18);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
#sound-modal-title.revealed { opacity: 1; transform: none; }
#sound-modal-hint {
  font-size: clamp(0.7rem, 1.8vw, 0.8rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(200, 185, 230, 0.28);
  text-align: center;
  margin: 0;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  pointer-events: none;
}
#sound-modal-hint.revealed { opacity: 1; transform: none; }
#sound-modal-btns {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  width: 100%;
  margin-top: 0.3rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  pointer-events: none;
}
#sound-modal-btns.revealed { opacity: 1; transform: none; pointer-events: all; }
#sound-modal-yes, #sound-modal-no {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  border-radius: 40px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 400;
  letter-spacing: 0.16em;
  font-size: clamp(0.8rem, 2vw, 0.9rem);
  padding: 0.72rem 1.6rem;
  transition: all 0.35s ease;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
#sound-modal-yes {
  background: rgba(140, 120, 200, 0.1);
  border: 1px solid rgba(140, 120, 200, 0.32);
  color: rgba(210, 195, 245, 0.85);
}
#sound-modal-yes:hover {
  background: rgba(140, 120, 200, 0.2);
  border-color: rgba(140, 120, 200, 0.55);
  box-shadow: 0 0 28px rgba(140, 120, 200, 0.18);
  transform: scale(1.02);
}
#sound-modal-no {
  background: rgba(140, 120, 200, 0.03);
  border: 1px solid rgba(140, 120, 200, 0.1);
  color: rgba(200, 185, 230, 0.38);
}
#sound-modal-no:hover {
  background: rgba(140, 120, 200, 0.07);
  border-color: rgba(140, 120, 200, 0.22);
  transform: scale(1.02);
}
#sound-modal-yes:active, #sound-modal-no:active { transform: scale(0.97); }

/* ── Language selection modal ── */
#lang-modal {
  position: fixed;
  inset: 0;
  z-index: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 3, 12, 0.55);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s ease;
}
#lang-modal.visible {
  opacity: 1;
  pointer-events: all;
}
#lang-mandala-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
#lang-modal-card {
  position: relative;
  z-index: 1;
  background: rgba(8, 6, 20, 0.72);
  border: 1px solid rgba(140, 120, 200, 0.18);
  border-radius: 20px;
  padding: clamp(2rem, 5vw, 3rem) clamp(1.5rem, 5vw, 3.5rem);
  text-align: center;
  max-width: min(340px, 88vw);
  width: 100%;
  box-shadow: 0 0 80px rgba(100, 80, 180, 0.12);
  transform: translateY(16px) scale(0.96);
  transition: transform 0.6s cubic-bezier(0.2, 0, 0, 1);
}
#lang-modal.visible #lang-modal-card {
  transform: translateY(0) scale(1);
}
#lang-modal-title {
  font-size: clamp(1.0rem, 3vw, 1.25rem);
  font-weight: 200;
  letter-spacing: 0.16em;
  color: rgba(220, 210, 245, 0.88);
  margin: 0 0 0.5rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
#lang-modal-title.revealed { opacity: 1; transform: none; }
#lang-modal-hint {
  font-size: clamp(0.7rem, 1.8vw, 0.8rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(180, 165, 215, 0.4);
  margin: 0 0 1.8rem;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  pointer-events: none;
}
#lang-modal-hint.revealed { opacity: 1; transform: none; }
#lang-modal-btns {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  pointer-events: none;
}
#lang-modal-btns.revealed { opacity: 1; transform: none; pointer-events: all; }
#lang-modal-en, #lang-modal-de {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  padding: 0.75rem 1.2rem;
  border-radius: 12px;
  font-family: inherit;
  font-size: clamp(0.8rem, 2vw, 0.9rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, box-shadow 0.25s, transform 0.15s;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(140, 120, 200, 0.08);
  border: 1px solid rgba(140, 120, 200, 0.28);
  color: rgba(210, 195, 245, 0.82);
}
#lang-modal-en:hover, #lang-modal-de:hover {
  background: rgba(140, 120, 200, 0.18);
  border-color: rgba(140, 120, 200, 0.52);
  box-shadow: 0 0 28px rgba(140, 120, 200, 0.16);
  transform: scale(1.02);
}
#lang-modal-en:active, #lang-modal-de:active { transform: scale(0.97); }

/* ── Support Link (Glittering Sacred Geometry) ── */
.support-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  text-decoration: none;
  color: #fff;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: all 0.4s ease;
  position: relative;
  padding: 1rem 2rem;
  margin: 1rem 0;
}

.support-link .mandala-bg {
  position: absolute;
  inset: 50%;
  width: 180px;
  height: 180px;
  margin-left: -90px;
  margin-top: -90px;
  z-index: -1;
  color: var(--teal);
  opacity: 0.25;
  animation: geoRotate 30s linear infinite;
  transition: all 0.6s ease;
  filter: blur(0.5px) drop-shadow(0 0 10px var(--teal-glow));
}

.support-link:hover .mandala-bg {
  opacity: 0.6;
  animation: geoRotate 8s linear infinite;
  transform: scale(1.2);
  color: var(--pink);
  filter: blur(0px) drop-shadow(0 0 20px var(--pink-glow));
}

.sacred-geo {
  width: 18px;
  height: 18px;
  display: block;
  color: var(--teal);
  opacity: 1; /* Match .tag visibility */
  animation: geoRotate 12s linear infinite, sparkle 2.5s ease-in-out infinite;
  filter: drop-shadow(0 0 10px var(--teal-glow)) drop-shadow(0 0 2px var(--teal));
  transition: all 0.4s ease;
}

.support-link:hover .sacred-geo {
  color: var(--pink);
  filter: drop-shadow(0 0 15px var(--pink-glow)) drop-shadow(0 0 3px var(--pink));
}

.support-text {
  position: relative;
  font-weight: 500;
  text-shadow: 0 0 10px rgba(255,255,255,0.4);
  animation: textGlitter 3s ease-in-out infinite;
}

@keyframes geoRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes sparkle {
  0%, 100% { opacity: 0.6; filter: drop-shadow(0 0 5px var(--pink-glow)); transform: scale(1) rotate(var(--current-rot)); }
  50% { opacity: 1; filter: drop-shadow(0 0 15px var(--pink-glow)); transform: scale(1.15) rotate(var(--current-rot)); }
}

@keyframes textGlitter {
  0%, 100% { text-shadow: 0 0 10px rgba(255,255,255,0.4), 0 0 2px var(--teal); }
  33% { text-shadow: 0 0 15px rgba(255,255,255,0.8), 0 0 5px var(--pink); }
  66% { text-shadow: 0 0 12px rgba(255,255,255,0.6), 0 0 4px var(--violet); }
}

/* ── Sticky Navigation ── */
.sticky-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.5rem;
  background: var(--bg);
  border-bottom: 1px solid rgba(107, 33, 168, 0.3);
  transition: opacity 0.4s, transform 0.4s;
  opacity: 0;
  transform: translateY(-100%);
}
.sticky-nav.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.sticky-nav .nav-logo {
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--fg);
  text-decoration: none;
  transition: color 0.3s;
}
.sticky-nav .nav-logo:hover { color: var(--teal); }
.sticky-nav .nav-links {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}
.sticky-nav .nav-links a {
  color: var(--fg-muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color 0.3s;
  position: relative;
  padding-bottom: 2px;
}
.sticky-nav .nav-links a:hover { color: var(--fg); }
.sticky-nav .nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--teal);
  transition: width 0.3s;
}
.sticky-nav .nav-links a:hover::after { width: 100%; }
.sticky-nav .nav-links a.is-active { color: var(--teal); }
.sticky-nav .nav-links a.is-active::after { width: 100%; }

/* Hamburger — unused, kept for markup compatibility */
.nav-hamburger { display: none; }

/* ── Mobile: bottom tab bar (replaces hamburger overlay) ── */
@media (max-width: 768px) {
  body { padding-bottom: 3.5rem; }

  /* Flip nav to the bottom */
  .sticky-nav {
    top: auto;
    bottom: 0;
    padding: 0;
    border-bottom: none;
    border-top: 1px solid rgba(107, 33, 168, 0.3);
    transform: translateY(100%); /* hidden below screen edge */
  }
  .sticky-nav.is-visible {
    transform: translateY(0);
    opacity: 1;
  }

  .sticky-nav .nav-logo { display: none; }

  /* Tab bar row */
  .sticky-nav .nav-links {
    width: 100%;
    gap: 0;
    justify-content: stretch;
  }
  .sticky-nav .nav-links a {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 0.25rem;
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-muted);
    border-top: 2px solid transparent;
    border-bottom: none;
    padding-bottom: 0.9rem;
    transition: color 0.25s, border-color 0.25s;
  }
  .sticky-nav .nav-links a::after { display: none; }
  .sticky-nav .nav-links a.is-active {
    color: var(--teal);
    border-top-color: var(--teal);
  }
  .sticky-nav .nav-links a:hover { color: var(--fg); }

  /* Lift floating buttons above bottom tab bar */
  #theme-btn { bottom: calc(3.5rem + 1.5rem); }
  #lang-btn  { bottom: calc(3.5rem + 1.5rem); }
}

/* Fullscreen experiment back-link */
.back-link.is-experiment-back {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.25s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  background: rgba(0,0,0,0.3);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.08);
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
}
.back-link.is-experiment-back:hover {
  color: var(--teal, #2dd4bf);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {