@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@200;300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

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

body {
  overflow: hidden;
  background: #000;
  font-family: 'Outfit', sans-serif;
  color: #e0e0e0;
  cursor: default;
}

#canvas-container {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 1;
}

/* ── Info Panel ── */
#info-panel {
  position: fixed;
  top: 0; right: 0;
  width: 420px;
  height: 100vh;
  z-index: 100;
  background: linear-gradient(135deg, rgba(8,10,22,0.92), rgba(14,18,40,0.95));
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-left: 1px solid rgba(255,255,255,0.06);
  transform: translateX(100%);
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

#info-panel.open {
  transform: translateX(0);
}

#info-panel::-webkit-scrollbar { width: 4px; }
#info-panel::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.panel-header {
  padding: 40px 36px 24px;
  position: relative;
}

.close-btn {
  position: absolute;
  top: 20px; right: 20px;
  width: 36px; height: 36px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  color: #aaa;
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
}
.close-btn:hover { background: rgba(255,255,255,0.1); color: #fff; }

.planet-icon {
  width: 80px; height: 80px;
  border-radius: 50%;
  margin-bottom: 20px;
  box-shadow: 0 0 40px var(--glow-color, rgba(255,180,50,0.3));
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.planet-name {
  font-family: 'Space Mono', monospace;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--accent, #ffb432), var(--accent2, #ff6b2b));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.planet-subtitle {
  font-size: 13px;
  font-weight: 300;
  color: rgba(255,255,255,0.4);
  margin-top: 4px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.panel-body {
  padding: 0 36px 40px;
  flex: 1;
}

.description {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  font-weight: 300;
  margin-bottom: 28px;
  border-left: 2px solid var(--accent, #ffb432);
  padding-left: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}

.stat-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 16px;
  transition: all 0.3s;
}
.stat-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.1);
}

.stat-label {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 6px;
  font-weight: 500;
}

.stat-value {
  font-family: 'Space Mono', monospace;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}

.stat-unit {
  font-size: 10px;
  color: rgba(255,255,255,0.35);
  font-weight: 400;
}

.section-title {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent, #ffb432);
  margin-bottom: 14px;
  font-weight: 600;
}

.composition-bar {
  margin-bottom: 10px;
}
.comp-label {
  display: flex; justify-content: space-between;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}
.comp-track {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.comp-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent, #ffb432), var(--accent2, #ff6b2b));
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.fun-fact {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 16px 18px;
  margin-top: 20px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,0.5);
}
.fun-fact::before {
  content: '✦';
  color: var(--accent, #ffb432);
  margin-right: 8px;
}

/* ── HUD ── */
#hud-top {
  position: fixed;
  top: 24px; left: 32px;
  z-index: 50;
  pointer-events: none;
}
#hud-top h1 {
  font-family: 'Space Mono', monospace;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
}
#hud-top p {
  font-size: 11px;
  color: rgba(255,255,255,0.25);
  letter-spacing: 2px;
  margin-top: 4px;
}

/* ── Controls hint ── */
#controls-hint {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex; gap: 20px;
  font-size: 11px;
  color: rgba(255,255,255,0.2);
  letter-spacing: 1px;
  pointer-events: none;
}
#controls-hint span {
  display: flex; align-items: center; gap: 6px;
}
.key {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  padding: 2px 8px;
  font-family: 'Space Mono', monospace;
  font-size: 10px;
}

/* ── Speed control ── */
#speed-control {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 50;
  display: flex; align-items: center; gap: 12px;
}
#speed-control label {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
}
#speed-slider {
  -webkit-appearance: none;
  width: 120px;
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  outline: none;
}
#speed-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #ffb432;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(255,180,50,0.4);
}
#speed-value {
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  min-width: 30px;
}