/* Midnight blue, copper-gold, parchment accents */
:root {
  --bg-deep: #070b14;
  --bg-card: #0c1424;
  --bg-card-hover: #111d33;
  --border-copper: #b8860b;
  --copper-gold: #d4af37;
  --copper-light: #f3e5ab;
  --copper-glow: rgba(212, 175, 55, 0.25);
  --parchment: #f4ecd8;
  --parchment-dim: #cfc5af;
  --text-main: #e2e8f0;
  --text-dim: #94a3b8;
  --accent-cyan: #38bdf8;
  --accent-rose: #f43f5e;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --font-serif: 'Cinzel', 'Georgia', serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(ellipse at 20% 15%, rgba(212, 175, 55, 0.05) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 85%, rgba(56, 189, 248, 0.04) 0%, transparent 60%);
}

a {
  color: var(--copper-gold);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--copper-light);
  text-decoration: underline;
}

/* HERO */
.hero {
  position: relative;
  min-height: 75vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 2rem 4rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.38;
  filter: contrast(1.1) brightness(0.85);
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.6) 0%, rgba(7, 11, 20, 0.95) 100%);
  z-index: 1;
}

.nav-bar {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  letter-spacing: 0.05em;
  color: var(--copper-light);
}

.brand .symbol {
  color: var(--copper-gold);
  font-size: 1.6rem;
}

nav {
  display: flex;
  gap: 1.25rem;
}
nav a {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}
nav a:hover, nav a.active {
  color: var(--copper-light);
  border-bottom: 1px solid var(--copper-gold);
}

.muse-tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.club-chip {
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  color: var(--copper-gold);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  margin-top: 3rem;
}

.badge {
  display: inline-block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--copper-gold);
  border: 1px solid var(--border-copper);
  padding: 0.25rem 0.75rem;
  border-radius: 2px;
  margin-bottom: 1rem;
  background: rgba(12, 20, 36, 0.6);
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 1.15;
  color: #fff;
  text-shadow: 0 0 25px rgba(212, 175, 55, 0.4);
  margin-bottom: 1.2rem;
}

.hero .lead {
  font-size: 1.15rem;
  color: var(--parchment-dim);
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 680px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.75rem 1.4rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}
.btn-copper {
  background: linear-gradient(135deg, #d4af37 0%, #aa8012 100%);
  color: #070b14;
  box-shadow: 0 0 15px rgba(212, 175, 55, 0.3);
}
.btn-copper:hover {
  background: linear-gradient(135deg, #f3e5ab 0%, #d4af37 100%);
  box-shadow: 0 0 22px rgba(212, 175, 55, 0.5);
  color: #000;
  text-decoration: none;
}
.btn-outline {
  background: transparent;
  color: var(--copper-light);
  border: 1px solid var(--border-copper);
}
.btn-outline:hover {
  background: rgba(212, 175, 55, 0.1);
  color: #fff;
  text-decoration: none;
}
.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}

/* MAIN LAYOUT */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 4.5rem;
}

.panel {
  scroll-margin-top: 2rem;
}

.panel-header {
  margin-bottom: 1.75rem;
}
.kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--copper-gold);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.35rem;
}
.panel-header h2 {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  color: #fff;
  margin-bottom: 0.5rem;
}
.panel-header p {
  color: var(--text-dim);
  max-width: 800px;
}

/* CONTROLS CARD */
.controls-card {
  background: var(--bg-card);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 6px;
  padding: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.control-group label {
  font-size: 0.8rem;
  color: var(--parchment-dim);
  font-weight: 500;
}
select, input[type="range"] {
  background: #060a12;
  color: var(--copper-light);
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}
select:focus {
  border-color: var(--copper-gold);
  box-shadow: 0 0 8px var(--copper-glow);
}

.stats-ribbon {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.3);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  border-left: 2px solid var(--copper-gold);
}
.stats-ribbon b {
  color: var(--copper-light);
}

/* TIMELINE TRACK */
.timeline-container {
  position: relative;
  background: #050810;
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 6px;
  padding: 1.5rem;
  overflow-x: auto;
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.8);
}

.timeline-track {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 140px;
  align-items: center;
}

.point {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  cursor: pointer;
  user-select: none;
}
.point:hover {
  transform: scale(1.35);
  z-index: 10;
}
.point.composite {
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.point.prime {
  background: linear-gradient(135deg, #d4af37, #997300);
  color: #070b14;
  font-weight: bold;
  border: 1px solid #ffd700;
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.4);
}
.point.prime.mod4-1 {
  background: linear-gradient(135deg, #38bdf8, #0284c7);
  border-color: #7dd3fc;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.4);
  color: #041020;
}
.point.prime.mod4-3 {
  background: linear-gradient(135deg, #fb923c, #c2410c);
  border-color: #fdba74;
  box-shadow: 0 0 10px rgba(251, 146, 60, 0.4);
  color: #240a02;
}
.point.prime.gap-small {
  border-color: #4ade80;
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.6);
}
.point.prime.gap-large {
  border-color: #f43f5e;
  box-shadow: 0 0 12px rgba(244, 63, 94, 0.6);
}

.legend-note {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.75rem;
  font-style: italic;
}

/* 2-COLUMN GRIDS */
.grid-layout-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 860px) {
  .grid-layout-2 {
    grid-template-columns: 1fr;
  }
}

/* CANVAS CONTAINERS */
.canvas-box {
  background: #04070d;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: 6px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}
.canvas-box canvas {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  background: #020408;
}
.canvas-toolbar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 0.75rem;
}
.canvas-title {
  align-self: flex-start;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--copper-gold);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}
.canvas-caption {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.75rem;
  text-align: center;
}

/* PARCHMENT CARD */
.parchment-card {
  position: relative;
  background: #0c1424;
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 6px;
  padding: 2rem;
  background-image: 
    radial-gradient(ellipse at top left, rgba(212, 175, 55, 0.05) 0%, transparent 60%);
}
.parchment-card h3 {
  font-family: var(--font-serif);
  color: var(--copper-light);
  margin-bottom: 1rem;
  font-size: 1.35rem;
}
.parchment-card p {
  color: var(--parchment-dim);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}
.wax-seal {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle, #b8860b 0%, #5a3d02 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  color: #f3e5ab;
  font-weight: bold;
  font-size: 1rem;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.7);
}

.callout-box {
  background: rgba(6, 10, 18, 0.8);
  border-left: 3px solid var(--copper-gold);
  padding: 0.85rem 1rem;
  margin: 1.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--parchment);
}

.formula-block {
  background: #060a12;
  border: 1px dashed rgba(212, 175, 55, 0.35);
  padding: 0.85rem;
  border-radius: 4px;
  text-align: center;
  font-family: var(--font-mono);
  color: var(--copper-light);
  font-size: 1.05rem;
  margin: 1.25rem 0;
}

.zeros-list {
  background: rgba(0, 0, 0, 0.35);
  padding: 0.75rem;
  border-radius: 4px;
  font-size: 0.85rem;
  margin-top: 1rem;
}
.zeros-list code {
  display: block;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-top: 0.35rem;
}

/* PLAYGROUND / GAME */
.game-board {
  background: var(--bg-card);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: 6px;
  padding: 2rem;
  box-shadow: 0 0 35px rgba(0, 0, 0, 0.6);
}

.game-status {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  padding-bottom: 1.5rem;
}
.stat-box {
  background: #060a12;
  padding: 1rem;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}
.stat-val {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--copper-light);
  font-weight: 700;
}

.game-prompt {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  color: #fff;
}
.game-prompt strong {
  color: var(--copper-gold);
}

.gap-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.gap-btn {
  background: #060a12;
  color: var(--copper-light);
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 0.65rem 1.2rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
}
.gap-btn:hover {
  background: var(--copper-gold);
  color: #070b14;
  box-shadow: 0 0 12px var(--copper-glow);
  transform: translateY(-2px);
}

.game-feedback {
  background: rgba(0, 0, 0, 0.4);
  padding: 1rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--parchment);
  min-height: 52px;
  display: flex;
  align-items: center;
  margin-bottom: 1.25rem;
  border-left: 3px solid var(--border-copper);
}

/* GLOSSARY */
.lexicon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.lexicon-item {
  background: var(--bg-card);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 6px;
  padding: 1.5rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.lexicon-item:hover {
  border-color: var(--copper-gold);
  transform: translateY(-3px);
}
.lexicon-item h3 {
  font-family: var(--font-serif);
  color: var(--copper-light);
  font-size: 1.15rem;
  margin-bottom: 0.65rem;
}
.lexicon-item p {
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.55;
}

/* FOOTER */
footer {
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  background: #04070d;
  padding: 3rem 1.5rem;
  margin-top: 5rem;
}
.footer-wrap {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
}
.footer-col strong {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--copper-light);
  display: block;
  margin-bottom: 0.5rem;
}
.footer-col p {
  max-width: 480px;
  font-size: 0.85rem;
  color: var(--text-dim);
}
.footer-col code {
  color: var(--copper-gold);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  .hero {
    padding: 1rem 1rem 3rem;
  }
  .controls-card {
    flex-direction: column;
    align-items: flex-start;
  }
}