/* ═══════════════════════════════════════════════════════
   TAKI YUYAY — Design System
   Futurismo Andino · takiyuyay.com
   ═══════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ─────────────────────────────────── */
:root {
  /* Brand palette */
  --oro-light: #F2CB6B;
  --oro: #DAA520;
  --oro-dark: #A87B12;
  --azul-profundo: #1B4F72;
  --cyan: #00CED1;
  --cyan-dim: rgba(0, 206, 209, 0.3);
  --tierra: #8B4513;
  --rojo-wari: #C0392B;
  --beige: #b8ad9c;

  /* Neutrals */
  --bg-dark: #0c0a08;
  --bg-mid: #15131a;
  --bg-section: #0e0c10;
  --text-primary: #f0ece4;
  --text-secondary: #a09888;
  --text-dim: #5a5248;

  /* World colors */
  --hanan: #3a6bc7;
  --hanan-glow: rgba(58, 107, 199, 0.4);
  --kay: #5a9e6f;
  --kay-glow: rgba(90, 158, 111, 0.4);
  --uku: #c98b3f;
  --uku-glow: rgba(201, 139, 63, 0.4);

  /* Typography */
  --font-display: 'Cinzel', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --section-pad: clamp(4rem, 10vh, 8rem);
  --container-max: 1200px;
  --gap: clamp(1rem, 2.5vw, 2rem);

  /* Transitions */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Glass */
  --glass-bg: rgba(15, 13, 18, 0.65);
  --glass-border: rgba(218, 165, 32, 0.12);
  --glass-blur: 20px;
}

/* ── RESET & BASE ──────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; color: inherit; font-family: inherit; }

/* ── BILINGUAL TOGGLE ──────────────────────────────── */
.en { display: none; }
html[lang="en"] .en { display: inline; }
html[lang="en"] .es { display: none; }

/* Block-level bilingual (for <p>, <h2>, etc. with spans inside) */
p > .en, h2 > .en, span.en, blockquote > .en { display: none; }
html[lang="en"] p > .en,
html[lang="en"] h2 > .en,
html[lang="en"] span.en,
html[lang="en"] blockquote > .en { display: inline; }
html[lang="en"] p > .es,
html[lang="en"] h2 > .es,
html[lang="en"] span.es,
html[lang="en"] blockquote > .es { display: none; }

/* ── NAVIGATION ────────────────────────────────────── */
#main-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 1.5rem;
  height: 70px;
  display: flex;
  align-items: center;
  background: transparent;
  transition: background 0.4s var(--ease-smooth), box-shadow 0.4s var(--ease-smooth);
}

#main-nav.scrolled {
  background: rgba(12, 10, 8, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(218, 165, 32, 0.08);
}

.nav-inner {
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
}

.nav-chakana { transition: transform 0.3s var(--ease-spring); }
.nav-logo:hover .nav-chakana { transform: rotate(45deg); }

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 3px;
  background: linear-gradient(to bottom, var(--oro-light), var(--oro-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 1px;
  color: var(--text-secondary);
  transition: color 0.3s;
  position: relative;
}

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

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }

.nav-right { display: flex; align-items: center; gap: 1rem; }

/* Language toggle */
.lang-toggle {
  position: relative;
  width: 44px; height: 28px;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  overflow: hidden;
  transition: border-color 0.3s;
}

.lang-toggle:hover { border-color: var(--oro); }

.lang-label {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-primary);
  pointer-events: none;
  transition: opacity 0.2s;
}

.lang-label.es { left: 50%; transform: translate(-50%, -50%); }
.lang-label.en { left: 50%; transform: translate(-50%, -50%); }

.lang-indicator {
  position: absolute;
  top: 3px; left: 3px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--oro);
  opacity: 0.15;
  transition: transform 0.3s var(--ease-spring);
}

html[lang="en"] .lang-indicator { transform: translateX(14px); }

/* Mobile menu button */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 10;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.3s var(--ease-smooth), opacity 0.3s;
}

.mobile-menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 999;
  background: rgba(12, 10, 8, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease-smooth);
}

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

.mobile-link {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 3px;
  color: var(--text-secondary);
  transition: color 0.3s;
}

.mobile-link:hover { color: var(--oro); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-toggle { display: flex; }
}

/* ── HERO ──────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(
    180deg,
    var(--azul-profundo) 0%,
    var(--bg-mid) 45%,
    var(--bg-dark) 100%
  );
  overflow: hidden;
}

#constellation-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
}

/* Chakana pulse at 60 BPM (1s per beat) */
.hero-chakana {
  margin-bottom: 1.5rem;
  animation: chakana-pulse 1s ease-in-out infinite alternate;
}

@keyframes chakana-pulse {
  0% { filter: drop-shadow(0 0 15px rgba(218, 165, 32, 0.3)); transform: scale(1); }
  100% { filter: drop-shadow(0 0 30px rgba(218, 165, 32, 0.6)); transform: scale(1.03); }
}

.chakana-inner {
  animation: chakana-circuit 3s ease-in-out infinite alternate;
}

@keyframes chakana-circuit {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

.chakana-core {
  animation: core-glow 1s ease-in-out infinite alternate;
}

@keyframes core-glow {
  0% { r: 10; opacity: 0.7; }
  100% { r: 14; opacity: 1; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  letter-spacing: clamp(4px, 1.2vw, 12px);
  background: linear-gradient(to bottom, var(--oro-light), var(--oro-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(0.8rem, 2.2vw, 1.3rem);
  letter-spacing: clamp(6px, 2vw, 18px);
  color: var(--cyan);
  font-weight: 500;
  margin-top: 0.25rem;
}

.hero-tagline {
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  color: var(--beige);
  font-style: italic;
  letter-spacing: 2px;
  margin-top: 0.25rem;
}

.hero-cta {
  margin-top: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  border: 1px solid var(--oro);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 3px;
  color: var(--oro);
  transition: all 0.4s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.hero-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(218, 165, 32, 0.08), rgba(218, 165, 32, 0.15));
  transform: translateX(-100%);
  transition: transform 0.4s var(--ease-smooth);
}

.hero-cta:hover::before { transform: translateX(0); }
.hero-cta:hover {
  box-shadow: 0 0 25px rgba(218, 165, 32, 0.2),
              0 0 50px rgba(218, 165, 32, 0.08);
}

.cta-arrow {
  transition: transform 0.3s var(--ease-spring);
}

.hero-cta:hover .cta-arrow { transform: translate(3px, -3px); }

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 2;
}

.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, transparent, var(--oro));
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

.scroll-text {
  font-size: 0.65rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── SECTIONS (shared) ─────────────────────────────── */
.section {
  padding: var(--section-pad) 1.5rem;
  position: relative;
}

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

.section-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.75rem;
}

.section-label.center, .section-title.center, .section-subtitle.center { text-align: center; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(to bottom, var(--oro-light), var(--oro));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.3;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: clamp(0.9rem, 1.3vw, 1.05rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: 3rem;
}

.section-subtitle.center { margin-left: auto; margin-right: auto; }

/* ── VISION ────────────────────────────────────────── */
.vision {
  background: var(--bg-section);
  border-top: 1px solid rgba(218, 165, 32, 0.06);
  border-bottom: 1px solid rgba(218, 165, 32, 0.06);
}

.vision-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.vision-description {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.8;
}

.vision-description strong { color: var(--oro); font-weight: 600; }
.vision-description em { color: var(--cyan); font-style: italic; }

.vision-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem;
  border-radius: 4px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: border-color 0.3s, transform 0.3s var(--ease-spring);
}

.stat:hover {
  border-color: rgba(218, 165, 32, 0.3);
  transform: translateY(-4px);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(to bottom, var(--oro-light), var(--oro));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-infinity {
  font-size: 3.5rem;
  color: var(--cyan);
  -webkit-text-fill-color: var(--cyan);
  background: none;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.stat-detail {
  display: block;
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 0.15rem;
}

@media (max-width: 768px) {
  .vision-grid { grid-template-columns: 1fr; }
}

/* ── THREE WORLDS ──────────────────────────────────── */
.worlds {
  background: var(--bg-dark);
}

.worlds-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.world-card {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transition: transform 0.5s var(--ease-spring), 
              border-color 0.4s,
              box-shadow 0.4s;
  animation-delay: var(--delay, 0s);
}

.world-card:hover {
  transform: translateY(-8px);
  border-color: rgba(218, 165, 32, 0.25);
}

.world-card[data-world="hanan"]:hover { box-shadow: 0 12px 40px var(--hanan-glow); }
.world-card[data-world="kay"]:hover { box-shadow: 0 12px 40px var(--kay-glow); }
.world-card[data-world="uku"]:hover { box-shadow: 0 12px 40px var(--uku-glow); }

.world-card-image {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.world-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, var(--glass-bg) 100%);
}

.world-card-content {
  padding: 1.5rem;
}

.world-icon {
  margin-bottom: 1rem;
  color: var(--oro);
  opacity: 0.8;
}

.world-card[data-world="hanan"] .world-icon { color: var(--hanan); }
.world-card[data-world="kay"] .world-icon { color: var(--kay); }
.world-card[data-world="uku"] .world-icon { color: var(--uku); }

.world-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
  background: linear-gradient(to bottom, var(--oro-light), var(--oro));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.world-meaning {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.world-pieces {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid rgba(218, 165, 32, 0.08);
  padding-top: 1rem;
}

.world-piece {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.75rem;
  row-gap: 0.1rem;
  align-items: center;
}

.piece-letter {
  grid-row: 1 / 3;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--oro);
  color: var(--oro);
}

.piece-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
}

.piece-detail {
  font-size: 0.7rem;
  color: var(--text-dim);
}

@media (max-width: 900px) {
  .worlds-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
}

/* ── COMBINATOR ────────────────────────────────────── */
.combinator {
  background: var(--bg-section);
  border-top: 1px solid rgba(218, 165, 32, 0.06);
  border-bottom: 1px solid rgba(218, 165, 32, 0.06);
}

.combinator-container {
  position: relative;
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: rgba(10, 8, 6, 0.8);
  padding: 2.5rem 2rem;
  overflow: hidden;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  /* Circuit background pattern */
  background-image:
    radial-gradient(circle at 20% 80%, rgba(0, 206, 209, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(218, 165, 32, 0.03) 0%, transparent 50%),
    linear-gradient(rgba(0, 206, 209, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 206, 209, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
}

/* Pads */
.combinator-pads {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  z-index: 1;
}

.pad {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: default;
  position: relative;
  transition: transform 0.3s var(--ease-spring), opacity 0.3s;
  opacity: 0.45;
}

.pad:not([disabled]) { cursor: pointer; opacity: 1; }
.pad:not([disabled]):hover { transform: scale(1.08); }
.pad:not([disabled]).active { opacity: 1; }

.pad-ring {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 88px; height: 88px;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.pad[data-world="uku"] .pad-ring { border-color: var(--uku); }
.pad[data-world="kay"] .pad-ring { border-color: var(--kay); }
.pad[data-world="hanan"] .pad-ring { border-color: var(--hanan); }

.pad.active .pad-ring {
  box-shadow: 0 0 20px var(--uku-glow);
}

.pad.active[data-world="kay"] .pad-ring { box-shadow: 0 0 20px var(--kay-glow); }
.pad.active[data-world="hanan"] .pad-ring { box-shadow: 0 0 20px var(--hanan-glow); }

.pad-inner {
  width: 84px; height: 84px;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  transition: background 0.3s, border-color 0.3s;
}

.pad.active .pad-inner {
  background: rgba(218, 165, 32, 0.1);
  border-color: rgba(218, 165, 32, 0.3);
}

.pad-letter {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dim);
  transition: color 0.3s;
}

.pad.active .pad-letter { color: var(--oro); }

/* Waveform mini bars */
.pad-waveform {
  display: flex;
  gap: 2px;
  height: 14px;
  align-items: flex-end;
}

.waveform-bar {
  width: 3px;
  height: 4px;
  background: var(--text-dim);
  border-radius: 1px;
  transition: height 0.2s, background 0.3s;
}

.pad.active .waveform-bar {
  background: var(--cyan);
  animation: wave-idle 0.8s ease-in-out infinite alternate;
}

.pad.active .waveform-bar:nth-child(1) { animation-delay: 0s; }
.pad.active .waveform-bar:nth-child(2) { animation-delay: 0.1s; }
.pad.active .waveform-bar:nth-child(3) { animation-delay: 0.2s; }
.pad.active .waveform-bar:nth-child(4) { animation-delay: 0.3s; }
.pad.active .waveform-bar:nth-child(5) { animation-delay: 0.2s; }
.pad.active .waveform-bar:nth-child(6) { animation-delay: 0.1s; }
.pad.active .waveform-bar:nth-child(7) { animation-delay: 0s; }

@keyframes wave-idle {
  0% { height: 3px; }
  100% { height: 14px; }
}

.pad-name {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
  max-width: 100px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pad-world {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.pad-lock {
  position: absolute;
  top: 60px; left: 50%;
  transform: translateX(-50%);
  color: var(--text-dim);
  opacity: 0.5;
}

.pad:not([disabled]) .pad-lock { display: none; }

/* Visualizer */
.combinator-visualizer {
  width: 100%;
  max-width: 700px;
  height: 80px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(218, 165, 32, 0.06);
  overflow: hidden;
  z-index: 1;
}

#visualizer-canvas {
  width: 100%;
  height: 100%;
}

/* Controls */
.combinator-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  z-index: 1;
}

.control-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 2px solid var(--glass-border);
  background: var(--glass-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: all 0.3s;
}

.control-btn:not([disabled]):hover {
  border-color: var(--oro);
  color: var(--oro);
  box-shadow: 0 0 15px rgba(218, 165, 32, 0.15);
}

.control-volume {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-dim);
}

.volume-track {
  width: 100px; height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.volume-fill {
  width: 70%;
  height: 100%;
  background: var(--oro);
  border-radius: 2px;
  opacity: 0.3;
}

/* Coming soon overlay */
.combinator-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(12, 10, 8, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-radius: 12px;
  transition: opacity 0.5s;
}

.combinator-overlay.hidden { opacity: 0; pointer-events: none; }

.overlay-content {
  text-align: center;
  max-width: 400px;
  padding: 2rem;
}

.overlay-pulse {
  width: 60px; height: 60px;
  border-radius: 50%;
  border: 2px solid var(--oro);
  margin: 0 auto 1.5rem;
  animation: overlay-pulse-anim 2s ease-in-out infinite;
  position: relative;
}

.overlay-pulse::after {
  content: '';
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: 0.3;
  animation: overlay-core 1s ease-in-out infinite alternate;
}

@keyframes overlay-pulse-anim {
  0%, 100% { transform: scale(1); opacity: 0.5; box-shadow: 0 0 0 rgba(218, 165, 32, 0); }
  50% { transform: scale(1.1); opacity: 1; box-shadow: 0 0 30px rgba(218, 165, 32, 0.3); }
}

@keyframes overlay-core {
  0% { opacity: 0.2; }
  100% { opacity: 0.6; }
}

.overlay-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 2px;
  color: var(--oro);
  margin-bottom: 0.75rem;
}

.overlay-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Combinatorics math */
.combinator-math {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.math-item { text-align: center; }

.math-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--oro);
}

.math-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.math-operator {
  font-size: 1.5rem;
  color: var(--cyan);
  font-weight: 300;
}

@media (max-width: 640px) {
  .combinator-pads { gap: 1rem; }
  .combinator-math { gap: 0.75rem; }
  .math-number { font-size: 1.4rem; }
}

/* ── MANIFESTO ─────────────────────────────────────── */
.manifesto {
  background: var(--bg-dark);
  text-align: center;
  padding-top: calc(var(--section-pad) * 1.2);
  padding-bottom: calc(var(--section-pad) * 1.2);
}

.manifesto-content {
  max-width: 700px;
  margin: 0 auto;
}

.manifesto-quote {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 1px;
  color: var(--text-primary);
}

.manifesto-divider {
  margin: 2.5rem auto;
  display: flex;
  justify-content: center;
  opacity: 0.5;
}

.manifesto-disclosure {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-style: italic;
}

/* ── FOOTER ────────────────────────────────────────── */
.footer {
  padding: 3rem 1.5rem 2rem;
  border-top: 1px solid rgba(218, 165, 32, 0.06);
  background: var(--bg-section);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-name {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 4px;
  color: var(--oro);
}

.footer-tagline {
  font-size: 0.7rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.footer-social {
  display: flex;
  gap: 1.5rem;
}

.social-link {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-secondary);
  transition: all 0.3s var(--ease-spring);
}

.social-link:hover {
  color: var(--oro);
  border-color: var(--oro);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(218, 165, 32, 0.15);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.footer-email {
  color: var(--cyan);
  font-size: 0.8rem;
  transition: opacity 0.3s;
}

.footer-email:hover { opacity: 0.7; }

/* ── REVEAL ANIMATIONS ─────────────────────────────── */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 0;
  transition: opacity 0.8s var(--ease-smooth), transform 0.8s var(--ease-smooth);
  transition-delay: var(--delay, 0s);
}

.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translate(0);
}

/* ── SCROLLBAR ─────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb {
  background: rgba(218, 165, 32, 0.2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(218, 165, 32, 0.4); }

/* ── SELECTION ─────────────────────────────────────── */
::selection {
  background: rgba(218, 165, 32, 0.3);
  color: var(--text-primary);
}

/* ── PREFERS REDUCED MOTION ────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}