/* MOONCRUST 3D — Futuristic Lunar Glassmorphism */
:root {
  --bg-color: #05070c;
  --panel-bg: rgba(12, 16, 28, 0.75);
  --panel-border: rgba(255, 255, 255, 0.12);
  --lunar-cyan: #00f0ff;
  --solar-gold: #f59e0b;
  --cosmic-violet: #a855f7;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(circle at center, #0d1322 0%, #05070c 100%);
  color: var(--text-main);
  font-family: var(--font-main);
}

/* Three.js Canvas Layer */
#webgl-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  outline: none;
  z-index: 1;
  display: block;
}

/* Glassmorphism HUD Overlay */
.hud-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  pointer-events: none; /* Allows click-through to 3D canvas */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem;
}

/* Header */
.hud-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.brand-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--lunar-cyan);
  text-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
  text-transform: uppercase;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, #ffffff 30%, #e0f2fe 60%, var(--lunar-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.3));
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.fps-pill {
  pointer-events: auto;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  color: var(--lunar-cyan);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

/* Tombol Buka Panel (Saat Panel Ditutup) */
.btn-toggle-hud {
  pointer-events: auto;
  font-family: var(--font-main);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.42rem 0.9rem;
  border-radius: 999px;
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--lunar-cyan);
  color: #fff;
  cursor: pointer;
  display: none; /* Muncul jika panel diminimize */
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
  transition: all 0.25s ease;
}

.btn-toggle-hud:hover {
  background: rgba(0, 240, 255, 0.2);
  transform: translateY(-1px);
}

.btn-toggle-hud.show {
  display: flex;
  animation: fadeIn 0.3s ease-out;
}

/* Footer / Control Center */
.hud-footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hud-footer.minimized {
  transform: translateY(140%);
  opacity: 0;
  pointer-events: none;
}

.controls-panel {
  pointer-events: auto;
  background: var(--panel-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--panel-border);
  border-radius: 1.25rem;
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* Top bar panel kontrol */
.panel-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.panel-label {
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--lunar-cyan);
}

.btn-close-panel {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.btn-close-panel:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.4);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.control-group label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.btn-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn-ctrl, .btn-toggle {
  flex: 1 1 auto;
  font-family: var(--font-main);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.55rem 0.85rem;
  border-radius: 0.65rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  text-align: center;
}

.btn-ctrl:hover, .btn-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-ctrl.active {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.25) 0%, rgba(168, 85, 247, 0.25) 100%);
  color: #fff;
  border-color: var(--lunar-cyan);
  box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
}

.btn-toggle.active {
  background: rgba(16, 185, 129, 0.18);
  color: #a7f3d0;
  border-color: #10b981;
  box-shadow: 0 0 14px rgba(16, 185, 129, 0.3);
}

.hud-hint {
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
  opacity: 0.85;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile Responsive */
@media (max-width: 640px) {
  .hud-overlay {
    padding: 1rem;
  }
  
  .brand-title {
    font-size: 1.55rem;
  }
  
  .brand-subtitle {
    font-size: 0.72rem;
  }
  
  .controls-panel {
    padding: 0.85rem 1rem;
    gap: 0.65rem;
    border-radius: 1rem;
  }
  
  .btn-ctrl, .btn-toggle {
    font-size: 0.72rem;
    padding: 0.45rem 0.55rem;
  }
  
  .hud-hint {
    font-size: 0.68rem;
  }
}