:root {
  --red: #ff3b47;
  --cyan: #2ad6ff;
  --bg: #05060a;
  --panel: rgba(14, 18, 28, 0.72);
  --border: rgba(120, 160, 220, 0.25);
}

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

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: #e8eef7;
  font-family: 'Chakra Petch', sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
}

#scene-container { position: fixed; inset: 0; }
#scene-container canvas { display: block; }

/* ---- Loading ---- */
#loading {
  position: fixed; inset: 0; z-index: 100;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  background: radial-gradient(circle at 50% 40%, #0b1220, #030409);
  transition: opacity .6s ease;
}
#loading.gone { opacity: 0; pointer-events: none; }
.glasses-anim {
  font-size: 4rem;
  animation: bob 1.4s ease-in-out infinite;
  filter: drop-shadow(0 0 20px rgba(255,59,71,.5)) drop-shadow(0 0 20px rgba(42,214,255,.5));
}
@keyframes bob { 0%,100%{transform:translateY(0) rotate(-4deg);} 50%{transform:translateY(-14px) rotate(4deg);} }
.load-text {
  margin-top: 1.2rem;
  font-family: 'Major Mono Display', monospace;
  letter-spacing: 2px; color: #9fb4d0;
  text-align: center; padding: 0 1rem;
}

/* ---- Top bar ---- */
#topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center;
  padding: .7rem 1.1rem;
  background: linear-gradient(180deg, rgba(5,6,10,.85), rgba(5,6,10,0));
  pointer-events: none;
}
.title {
  font-family: 'Major Mono Display', monospace;
  font-size: clamp(.95rem, 2.6vw, 1.35rem);
  letter-spacing: 2px;
}
.title span {
  background: linear-gradient(90deg, var(--red), #fff, var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}
.hint {
  font-size: clamp(.65rem, 2vw, .85rem);
  color: #cfe0f5; font-weight: 600;
  padding: .35rem .7rem; border-radius: 20px;
  border: 1px solid var(--border);
  background: rgba(20,26,40,.5);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(42,214,255,.0); opacity:.85; }
  50% { box-shadow: 0 0 16px 1px rgba(42,214,255,.35); opacity:1; }
}

/* ---- Scene selector ---- */
#scene-selector {
  position: fixed; bottom: 1rem; left: 50%;
  transform: translateX(-50%); z-index: 20;
  display: flex; gap: .5rem;
  padding: .4rem;
  background: var(--panel);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 16px;
  max-width: 94vw; overflow-x: auto;
  box-shadow: 0 8px 30px rgba(0,0,0,.5);
}
#scene-selector::-webkit-scrollbar { height: 0; }
.scene-btn {
  flex: 0 0 auto;
  font-family: 'Chakra Petch', sans-serif;
  font-weight: 600; font-size: .8rem;
  color: #cfe0f5;
  background: rgba(30,38,56,.55);
  border: 1px solid transparent;
  padding: .55rem .8rem; border-radius: 11px;
  cursor: pointer; white-space: nowrap;
  transition: all .18s ease;
}
.scene-btn:hover { background: rgba(50,64,92,.7); transform: translateY(-2px); }
.scene-btn.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(255,59,71,.35), rgba(42,214,255,.35));
  border-color: rgba(255,255,255,.4);
  box-shadow: 0 0 16px rgba(42,214,255,.4);
}

/* ---- Panel toggle ---- */
#panel-toggle {
  position: fixed; top: 3.4rem; right: 1rem; z-index: 25;
  width: 44px; height: 44px; border-radius: 12px;
  font-size: 1.3rem; color: #cfe0f5; cursor: pointer;
  background: var(--panel); border: 1px solid var(--border);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transition: transform .2s;
}
#panel-toggle:hover { transform: rotate(60deg); }

/* ---- Control panel ---- */
#control-panel {
  position: fixed; top: 3.4rem; right: 1rem; z-index: 30;
  width: 270px; max-width: calc(100vw - 2rem);
  padding: 1rem;
  background: var(--panel);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border); border-radius: 18px;
  box-shadow: 0 12px 40px rgba(0,0,0,.55);
  display: flex; flex-direction: column; gap: .85rem;
  transform: translateX(120%) scale(.95);
  opacity: 0; pointer-events: none;
  transition: transform .3s cubic-bezier(.2,.8,.2,1), opacity .3s;
}
#control-panel.open {
  transform: translateX(0) scale(1);
  opacity: 1; pointer-events: auto;
}
.panel-header {
  display: flex; justify-content: space-between; align-items: center;
  font-family: 'Major Mono Display', monospace;
  font-size: .95rem; letter-spacing: 1px;
  padding-bottom: .3rem; border-bottom: 1px solid var(--border);
}
#panel-close {
  background: none; border: none; color: #9fb4d0;
  font-size: 1rem; cursor: pointer;
}
.ctrl { display: flex; flex-direction: column; gap: .4rem; }
.ctrl span {
  display: flex; justify-content: space-between;
  font-size: .78rem; color: #b7c8e0; font-weight: 600;
}
.ctrl span em {
  font-style: normal; color: var(--cyan);
  font-family: 'Chakra Petch', monospace;
}
input[type=range] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 5px; border-radius: 4px;
  background: linear-gradient(90deg, var(--red), var(--cyan));
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; cursor: pointer;
  box-shadow: 0 0 8px rgba(255,255,255,.6);
  border: 2px solid #0b1220;
}
input[type=range]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; cursor: pointer; border: 2px solid #0b1220;
}

.toggles { display: flex; gap: .5rem; }
.tbtn {
  flex: 1; padding: .5rem; border-radius: 10px;
  font-family: 'Chakra Petch', sans-serif; font-weight: 600;
  font-size: .78rem; color: #cfe0f5; cursor: pointer;
  background: rgba(30,38,56,.6); border: 1px solid var(--border);
  transition: all .18s;
}
.tbtn:hover { background: rgba(50,64,92,.7); }
.tbtn.on {
  color: #fff;
  background: linear-gradient(135deg, rgba(42,214,255,.35), rgba(42,214,255,.15));
  border-color: rgba(42,214,255,.5);
}
.reset-btn, .how-btn {
  padding: .5rem; border-radius: 10px; cursor: pointer;
  font-family: 'Chakra Petch', sans-serif; font-size: .76rem;
  border: 1px solid var(--border); color: #b7c8e0;
  background: rgba(20,26,40,.5); transition: all .18s;
}
.reset-btn:hover { color:#fff; border-color: var(--red); }
.how-btn:hover { color:#fff; border-color: var(--cyan); }

/* ---- Modal ---- */
#modal-backdrop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(3,5,10,.75);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .25s;
  padding: 1rem;
}
#modal-backdrop.show { opacity: 1; pointer-events: auto; }
#modal {
  position: relative;
  max-width: 460px; width: 100%;
  background: linear-gradient(160deg, #0e1626, #0a0f1c);
  border: 1px solid var(--border); border-radius: 20px;
  padding: 1.8rem 1.6rem;
  box-shadow: 0 20px 60px rgba(0,0,0,.7);
}
#modal h2 {
  font-family: 'Major Mono Display', monospace;
  font-size: 1.15rem; margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--red), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
#modal p { font-size: .9rem; line-height: 1.55; color: #c4d4ea; margin-bottom: .8rem; }
#modal .red { color: var(--red); }
#modal .cyan { color: var(--cyan); }
#modal .tip {
  font-size: .82rem; color: #8fa4c0; font-style: italic;
  border-left: 2px solid var(--cyan); padding-left: .7rem;
}
#modal-close {
  position: absolute; top: .8rem; right: .9rem;
  background: none; border: none; color: #9fb4d0;
  font-size: 1.1rem; cursor: pointer;
}

/* ---- Footer ---- */
#footer {
  position: fixed; bottom: .45rem; left: .8rem; z-index: 15;
  font-size: .7rem;
}
#footer a {
  color: #6f84a4; text-decoration: none;
  border-bottom: 1px dotted #6f84a4;
}
#footer a:hover { color: var(--cyan); border-color: var(--cyan); }

/* ---- Mobile ---- */
@media (max-width: 768px) {
  #control-panel { top: auto; bottom: 5rem; right: 1rem; left: 1rem; width: auto; }
  #scene-selector { bottom: .6rem; }
  #footer { display: none; }
  .hint { display: none; }
}
</parameter>
</invoke>