/* ============================================
   ASDF HUB - Phi Harmony + Living Cosmos
   Philosophy: Mathematical beauty. Golden ratio.
   "Don't trust. Verify. This is fine." 🔥
   ============================================ */

/* design-tokens.css loaded via HTML <link> — no @import needed */

:root {
  /* === PHI SYSTEM === */
  --phi: 1.618033988749895;
  --phi-inv: 0.618033988749895;
  --phi-sq: 2.618033988749895;
  --golden-angle: 137.5deg;

  /* Phi-based percentages */
  --phi-xs: 14.6%; /* 1/φ⁴ */
  --phi-sm: 23.6%; /* 1/φ³ */
  --phi-md: 38.2%; /* 1/φ² */
  --phi-lg: 61.8%; /* 1/φ */
  --phi-xl: 76.4%; /* 1 - 1/φ³ */

  /* === COLORS === */
  --bg-void: #080604;
  --bg-deep: #0d0906;
  --bg-warm: #1a120d;
  --bg-surface: #1f1610;
  --bg-elevated: #2a1d15;

  --gold: #eab308;
  --gold-soft: #fcd34d;
  --gold-pale: #fef3c7;
  --amber: #f59e0b;
  --fire: #ef6c35;
  --fire-deep: #dc2626;
  --ember: #b45309;

  /* Particle colors */
  --particle-blue: #60a5fa;
  --particle-cyan: #22d3d8;
  --particle-purple: #a78bfa;
  --particle-pink: #f472b6;

  --text-primary: #faf8f5;
  --text-secondary: #d6cfc5;
  --text-muted: #8a7a68;
  --text-ghost: #5c4f42;

  --glow-gold: rgba(234, 179, 8, 0.35);
  --glow-fire: rgba(239, 108, 53, 0.3);
  --glow-soft: rgba(252, 211, 77, 0.2);
  --glow-blue: rgba(96, 165, 250, 0.4);
  --glow-cyan: rgba(34, 211, 216, 0.35);

  /* === MOTION === */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.45, 0, 0.55, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-phi: cubic-bezier(0.618, 0, 0.382, 1);
}

/* === FOCUS & ACCESSIBILITY === */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-sm) var(--space-lg);
  background: var(--gold);
  color: var(--bg-void);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  z-index: var(--z-max);
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-md);
}

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

html,
body {
  height: 100%;
  overflow: hidden;
}

body.hub-majestic {
  font-family:
    'Inter',
    system-ui,
    -apple-system,
    sans-serif;
  background: var(--bg-void);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   AMBIENT BACKGROUND - Breathing warmth
   ============================================ */

.hub-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 45%, var(--bg-warm) 0%, transparent 65%),
    radial-gradient(
      ellipse 50% 50% at var(--phi-lg) var(--phi-md),
      var(--glow-fire) 0%,
      transparent 50%
    ),
    radial-gradient(ellipse 30% 40% at 20% 70%, rgba(96, 165, 250, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 25% 35% at 85% 25%, rgba(167, 139, 250, 0.06) 0%, transparent 50%);
  opacity: 0.85;
  animation: ambient-breathe 12s var(--ease-smooth) infinite;
}

@keyframes ambient-breathe {
  0%,
  100% {
    opacity: 0.75;
    transform: scale(1);
  }
  50% {
    opacity: 0.95;
    transform: scale(1.02);
  }
}

/* ============================================
   SPATIAL DUST - Distant twinkling stars
   ============================================ */

.hub-dust {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hub-dust i {
  position: absolute;
  width: 1px;
  height: 1px;
  background: var(--text-muted);
  border-radius: 50%;
  opacity: 0;
  will-change: transform, opacity;
}

/* Phi-distributed star positions */
.hub-dust i:nth-child(1) {
  top: 8%;
  left: 12%;
  animation: star-twinkle 4s var(--ease-smooth) infinite 0s;
}
.hub-dust i:nth-child(2) {
  top: 15%;
  left: var(--phi-md);
  animation: star-twinkle 5s var(--ease-smooth) infinite 0.5s;
}
.hub-dust i:nth-child(3) {
  top: 22%;
  left: var(--phi-lg);
  animation: star-twinkle 3.5s var(--ease-smooth) infinite 1s;
}
.hub-dust i:nth-child(4) {
  top: 12%;
  left: 82%;
  animation: star-twinkle 4.5s var(--ease-smooth) infinite 1.5s;
}
.hub-dust i:nth-child(5) {
  top: var(--phi-md);
  left: 8%;
  animation: star-twinkle 5.5s var(--ease-smooth) infinite 0.3s;
}
.hub-dust i:nth-child(6) {
  top: 45%;
  left: 18%;
  animation: star-twinkle 4s var(--ease-smooth) infinite 2s;
}
.hub-dust i:nth-child(7) {
  top: 55%;
  left: 88%;
  animation: star-twinkle 3s var(--ease-smooth) infinite 0.8s;
}
.hub-dust i:nth-child(8) {
  top: var(--phi-lg);
  left: var(--phi-sm);
  animation: star-twinkle 4.8s var(--ease-smooth) infinite 1.2s;
}
.hub-dust i:nth-child(9) {
  top: 72%;
  left: 75%;
  animation: star-twinkle 5.2s var(--ease-smooth) infinite 0.6s;
}
.hub-dust i:nth-child(10) {
  top: 78%;
  left: 45%;
  animation: star-twinkle 3.8s var(--ease-smooth) infinite 1.8s;
}
.hub-dust i:nth-child(11) {
  top: 85%;
  left: 15%;
  animation: star-twinkle 4.2s var(--ease-smooth) infinite 2.2s;
}
.hub-dust i:nth-child(12) {
  top: 5%;
  left: 55%;
  animation: star-twinkle 5s var(--ease-smooth) infinite 0.4s;
}
.hub-dust i:nth-child(13) {
  top: 32%;
  left: 92%;
  animation: star-twinkle 3.2s var(--ease-smooth) infinite 1.4s;
}
.hub-dust i:nth-child(14) {
  top: 68%;
  left: 5%;
  animation: star-twinkle 4.6s var(--ease-smooth) infinite 0.9s;
}
.hub-dust i:nth-child(15) {
  top: 48%;
  left: 72%;
  animation: star-twinkle 5.8s var(--ease-smooth) infinite 1.6s;
}
.hub-dust i:nth-child(16) {
  top: 25%;
  left: 28%;
  animation: star-twinkle 3.6s var(--ease-smooth) infinite 2.4s;
}
.hub-dust i:nth-child(17) {
  top: 90%;
  left: var(--phi-lg);
  animation: star-twinkle 4.4s var(--ease-smooth) infinite 0.7s;
}
.hub-dust i:nth-child(18) {
  top: 18%;
  left: 68%;
  animation: star-twinkle 5.4s var(--ease-smooth) infinite 1.1s;
}
.hub-dust i:nth-child(19) {
  top: var(--phi-lg);
  left: 95%;
  animation: star-twinkle 3.4s var(--ease-smooth) infinite 1.9s;
}
.hub-dust i:nth-child(20) {
  top: 82%;
  left: 85%;
  animation: star-twinkle 4.9s var(--ease-smooth) infinite 0.2s;
}

@keyframes star-twinkle {
  0%,
  100% {
    opacity: 0.1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.5);
  }
}

/* Some stars are brighter */
.hub-dust i:nth-child(3n) {
  width: 2px;
  height: 2px;
  box-shadow: 0 0 3px var(--gold-pale);
}

.hub-dust i:nth-child(5n) {
  background: var(--particle-blue);
  box-shadow: 0 0 4px var(--glow-blue);
}

.hub-dust i:nth-child(7n) {
  background: var(--particle-cyan);
  box-shadow: 0 0 4px var(--glow-cyan);
}

/* ============================================
   FLOATING EMBERS - Fire particles
   ============================================ */

.hub-embers {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.hub-embers i {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--fire);
  border-radius: 50%;
  opacity: 0;
  box-shadow:
    0 0 4px var(--fire),
    0 0 8px var(--glow-fire);
  will-change: transform, opacity;
}

/* Phi-distributed ember positions */
.hub-embers i:nth-child(1) {
  left: var(--phi-sm);
  animation: ember-drift 14s var(--ease-smooth) infinite 0s;
}
.hub-embers i:nth-child(2) {
  left: var(--phi-md);
  animation: ember-drift 16s var(--ease-smooth) infinite 2s;
}
.hub-embers i:nth-child(3) {
  left: 50%;
  animation: ember-drift 12s var(--ease-smooth) infinite 4s;
}
.hub-embers i:nth-child(4) {
  left: var(--phi-lg);
  animation: ember-drift 18s var(--ease-smooth) infinite 1s;
}
.hub-embers i:nth-child(5) {
  left: var(--phi-xl);
  animation: ember-drift 15s var(--ease-smooth) infinite 3s;
}
.hub-embers i:nth-child(6) {
  left: 30%;
  animation: ember-drift 13s var(--ease-smooth) infinite 5s;
}
.hub-embers i:nth-child(7) {
  left: 70%;
  animation: ember-drift 17s var(--ease-smooth) infinite 2.5s;
}
.hub-embers i:nth-child(8) {
  left: 45%;
  animation: ember-drift 14s var(--ease-smooth) infinite 6s;
}
.hub-embers i:nth-child(9) {
  left: 15%;
  animation: ember-drift 19s var(--ease-smooth) infinite 1.5s;
}
.hub-embers i:nth-child(10) {
  left: 85%;
  animation: ember-drift 11s var(--ease-smooth) infinite 3.5s;
}

/* Amber variants */
.hub-embers i:nth-child(odd) {
  background: var(--amber);
  box-shadow:
    0 0 4px var(--amber),
    0 0 10px var(--glow-gold);
}

@keyframes ember-drift {
  0% {
    bottom: -2%;
    opacity: 0;
    transform: translateX(0) scale(1);
  }
  10% {
    opacity: 0.5;
  }
  50% {
    transform: translateX(15px) scale(0.8);
  }
  90% {
    opacity: 0.15;
  }
  100% {
    bottom: 100%;
    opacity: 0;
    transform: translateX(30px) scale(0.5);
  }
}

/* ============================================
   MOLECULAR CELLS - Living organisms
   ============================================ */

.hub-cells {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

.hub-cells i {
  position: absolute;
  border-radius: 50%;
  opacity: 0;
}

/* Cell 1 - Large cyan organism */
.hub-cells i:nth-child(1) {
  width: 40px;
  height: 40px;
  top: 20%;
  left: 15%;
  background: radial-gradient(circle at 30% 30%, var(--particle-cyan) 0%, transparent 70%);
  border: 1px solid rgba(34, 211, 216, 0.2);
  animation: cell-drift-1 25s var(--ease-smooth) infinite;
}

/* Cell 2 - Medium blue organism */
.hub-cells i:nth-child(2) {
  width: 28px;
  height: 28px;
  top: 65%;
  right: 12%;
  background: radial-gradient(circle at 40% 40%, var(--particle-blue) 0%, transparent 70%);
  border: 1px solid rgba(96, 165, 250, 0.2);
  animation: cell-drift-2 20s var(--ease-smooth) infinite 2s;
}

/* Cell 3 - Small purple organism */
.hub-cells i:nth-child(3) {
  width: 18px;
  height: 18px;
  top: 40%;
  left: 80%;
  background: radial-gradient(circle at 35% 35%, var(--particle-purple) 0%, transparent 70%);
  border: 1px solid rgba(167, 139, 250, 0.15);
  animation: cell-drift-3 18s var(--ease-smooth) infinite 4s;
}

/* Cell 4 - Tiny pink organism */
.hub-cells i:nth-child(4) {
  width: 12px;
  height: 12px;
  top: 75%;
  left: 25%;
  background: radial-gradient(circle at 30% 30%, var(--particle-pink) 0%, transparent 70%);
  border: 1px solid rgba(244, 114, 182, 0.15);
  animation: cell-drift-4 22s var(--ease-smooth) infinite 1s;
}

/* Cell 5 - Medium gold organism */
.hub-cells i:nth-child(5) {
  width: 24px;
  height: 24px;
  top: 30%;
  right: 25%;
  background: radial-gradient(circle at 35% 35%, var(--gold-soft) 0%, transparent 70%);
  border: 1px solid rgba(234, 179, 8, 0.15);
  animation: cell-drift-5 28s var(--ease-smooth) infinite 3s;
}

/* Cell 6 - Small cyan organism */
.hub-cells i:nth-child(6) {
  width: 15px;
  height: 15px;
  bottom: 20%;
  left: 60%;
  background: radial-gradient(circle at 40% 40%, var(--particle-cyan) 0%, transparent 70%);
  border: 1px solid rgba(34, 211, 216, 0.12);
  animation: cell-drift-6 16s var(--ease-smooth) infinite 5s;
}

/* Cell drift animations - organic floating paths */
@keyframes cell-drift-1 {
  0%,
  100% {
    opacity: 0.15;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  25% {
    opacity: 0.35;
    transform: translate(30px, -20px) scale(1.1) rotate(10deg);
  }
  50% {
    opacity: 0.25;
    transform: translate(50px, 10px) scale(0.95) rotate(-5deg);
  }
  75% {
    opacity: 0.4;
    transform: translate(20px, 30px) scale(1.05) rotate(15deg);
  }
}

@keyframes cell-drift-2 {
  0%,
  100% {
    opacity: 0.12;
    transform: translate(0, 0) scale(1);
  }
  33% {
    opacity: 0.3;
    transform: translate(-40px, 20px) scale(1.15);
  }
  66% {
    opacity: 0.2;
    transform: translate(-20px, -30px) scale(0.9);
  }
}

@keyframes cell-drift-3 {
  0%,
  100% {
    opacity: 0.1;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  38.2% {
    opacity: 0.28;
    transform: translate(-25px, 15px) scale(1.2) rotate(-20deg);
  }
  61.8% {
    opacity: 0.18;
    transform: translate(10px, -25px) scale(0.85) rotate(10deg);
  }
}

@keyframes cell-drift-4 {
  0%,
  100% {
    opacity: 0.08;
    transform: translate(0, 0) scale(1);
  }
  50% {
    opacity: 0.22;
    transform: translate(35px, -15px) scale(1.25);
  }
}

@keyframes cell-drift-5 {
  0%,
  100% {
    opacity: 0.1;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  30% {
    opacity: 0.25;
    transform: translate(-20px, 25px) scale(1.1) rotate(8deg);
  }
  70% {
    opacity: 0.18;
    transform: translate(15px, -20px) scale(0.95) rotate(-12deg);
  }
}

@keyframes cell-drift-6 {
  0%,
  100% {
    opacity: 0.06;
    transform: translate(0, 0) scale(1);
  }
  40% {
    opacity: 0.2;
    transform: translate(20px, 20px) scale(1.3);
  }
  80% {
    opacity: 0.12;
    transform: translate(-15px, 10px) scale(0.9);
  }
}

/* Cell membrane pulse effect */
.hub-cells i::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: 0.3;
  animation: membrane-pulse 3s var(--ease-smooth) infinite;
}

@keyframes membrane-pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.15);
    opacity: 0.1;
  }
}

/* ============================================
   SYNAPSES - Neural connections
   ============================================ */

.hub-synapses {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.hub-synapses i {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--particle-cyan) 50%, transparent 100%);
  opacity: 0;
  transform-origin: left center;
}

/* Synapse connections */
.hub-synapses i:nth-child(1) {
  width: 120px;
  top: 35%;
  left: 20%;
  transform: rotate(25deg);
  animation: synapse-fire 8s var(--ease-smooth) infinite 0s;
}

.hub-synapses i:nth-child(2) {
  width: 80px;
  top: 60%;
  right: 30%;
  transform: rotate(-15deg);
  background: linear-gradient(90deg, transparent 0%, var(--particle-purple) 50%, transparent 100%);
  animation: synapse-fire 10s var(--ease-smooth) infinite 2s;
}

.hub-synapses i:nth-child(3) {
  width: 100px;
  top: 25%;
  right: 15%;
  transform: rotate(40deg);
  background: linear-gradient(90deg, transparent 0%, var(--particle-blue) 50%, transparent 100%);
  animation: synapse-fire 7s var(--ease-smooth) infinite 4s;
}

.hub-synapses i:nth-child(4) {
  width: 60px;
  bottom: 30%;
  left: 35%;
  transform: rotate(-30deg);
  background: linear-gradient(90deg, transparent 0%, var(--gold-soft) 50%, transparent 100%);
  animation: synapse-fire 12s var(--ease-smooth) infinite 1s;
}

@keyframes synapse-fire {
  0%,
  85%,
  100% {
    opacity: 0;
    clip-path: inset(0 100% 0 0);
  }
  10% {
    opacity: 0.4;
    clip-path: inset(0 0 0 0);
  }
  20% {
    opacity: 0.6;
    clip-path: inset(0 0 0 0);
  }
  30% {
    opacity: 0.3;
    clip-path: inset(0 0 0 100%);
  }
}

/* Synapse endpoints - neural nodes */
.hub-synapses i::before,
.hub-synapses i::after {
  content: '';
  position: absolute;
  width: 4px;
  height: 4px;
  background: inherit;
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
}

.hub-synapses i::before {
  left: 0;
  box-shadow: 0 0 6px currentColor;
}

.hub-synapses i::after {
  right: 0;
  box-shadow: 0 0 6px currentColor;
}

/* ============================================
   HUB CONTAINER
   ============================================ */

.hub {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

/* ============================================
   ORBITAL RINGS - Phi-ratio ellipses
   ============================================ */

.hub-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(234, 179, 8, 0.06);
  pointer-events: none;
}

.hub-orbit--inner {
  width: 240px;
  height: calc(240px / var(--phi));
  animation: orbit-rotate 90s linear infinite;
}

.hub-orbit--outer {
  width: calc(240px * var(--phi));
  height: 240px;
  animation: orbit-rotate 140s linear infinite reverse;
}

@keyframes orbit-rotate {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   CENTER CORE - Removed, Tools now at center
   ============================================ */

@keyframes glow-breathe {
  0%,
  100% {
    opacity: 0.4;
    transform: scale(1);
  }
  50% {
    opacity: 0.65;
    transform: scale(1.1);
  }
}

/* hub-node + hub-tools removed — now handled by orbital-system.css */

/* ============================================
   FOOTER
   ============================================ */

.hub-footer {
  position: fixed;
  bottom: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--text-2xs);
  color: var(--text-ghost);
  z-index: var(--z-overlay);
}

.hub-footer-nav,
.hub-footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.hub-footer a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.hub-footer a:hover {
  color: var(--gold);
}

.hub-footer span {
  opacity: 0.4;
}

/* ============================================
   RESPONSIVE - Phi-scaled
   ============================================ */

@media (max-width: 768px) {
  .hub-orbit--inner {
    width: 180px;
    height: calc(180px / var(--phi));
  }
  .hub-orbit--outer {
    width: calc(180px * var(--phi));
    height: 180px;
  }

  /* Reduce particle visibility on mobile for performance */
  .hub-cells i {
    opacity: 0 !important;
    animation: none !important;
  }
  .hub-synapses i {
    display: none;
  }
  .hub-dust i:nth-child(n + 11) {
    display: none;
  }
  .hub-embers i:nth-child(n + 6) {
    display: none;
  }
}

/* Very small screens - minimal particles */
@media (max-width: 480px) {
  .hub-cells,
  .hub-synapses {
    display: none;
  }
  .hub-dust i:nth-child(n + 6) {
    display: none;
  }
  .hub-embers i:nth-child(n + 4) {
    display: none;
  }
}

@media (max-height: 600px) {
  .hub-orbit--inner {
    width: 140px;
    height: calc(140px / var(--phi));
  }
  .hub-orbit--outer {
    width: calc(140px * var(--phi));
    height: 140px;
  }

  .hub-cells,
  .hub-synapses {
    display: none;
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.2s !important;
  }

  .hub-cells,
  .hub-synapses,
  .hub-dust,
  .hub-embers {
    display: none;
  }
}