/* ============================================================================
   CELESTIAL SIGNALS - Styles
   ============================================================================ */
@import url('https://fonts.googleapis.com/css2?family=General+Sans:wght@400;500;600;700&family=Archivo:wdth,wght@100,600&display=swap');

:root {
  --bg: #000;
  --panel: rgba(0, 0, 0, 0.65);
  --accent: #2aa3ff;
  --muted: #999;
  --success: #4ade80;
  --warning: #fbbf24;
  --error: #ef4444;
}

/* Base Reset */
html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: #fff;
  font: 14px/1.4 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  overflow: hidden;
}

canvas { display: block; }

/* UI hidden state (prevents initial flash) */
body.ui-hidden #hud,
body.ui-hidden #togglePanel,
body.ui-hidden #vrBtn,
body.ui-hidden .lil-gui.root,
body.ui-hidden .fps-panel {
  opacity: 0;
  pointer-events: none;
}

/* Atmospheric overlay */
#atmosphere {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 20%, rgba(80, 120, 255, 0.18), rgba(0, 0, 0, 0) 60%),
    radial-gradient(80% 80% at 50% 50%, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.45) 85%);
  mix-blend-mode: screen;
}

/* ============================================================================
   HUD Panel
   ============================================================================ */
#hud {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 20;
  background: var(--panel);
  padding: 10px 12px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

#hud.hidden { opacity: 0; pointer-events: none; }

#hud .title { font-weight: 700; margin-bottom: 6px; letter-spacing: 0.3px; }

#hud .row { display: flex; gap: 10px; font-size: 12px; color: #ddd; flex-wrap: wrap; }

#hud .chip { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 999px; }
#hud .chip.test { background: rgba(251,191,36,0.2); color: var(--warning); }
#hud .chip.real-connected { background: rgba(74,222,128,0.2); color: var(--success); }
#hud .chip.real-connecting { background: rgba(239,68,68,0.2); color: var(--error); }

#hud .hint { margin-top: 6px; color: var(--muted); font-size: 12px; }

/* ============================================================================
   Toggle Panel
   ============================================================================ */
#togglePanel {
  position: absolute;
  top: 121px;
  left: 12px;
  z-index: 20;
  background: var(--panel);
  padding: 12px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 160px;
  transition: all 0.3s ease;
}

#togglePanel.hidden { opacity: 0; pointer-events: none; }

#togglePanel .title { font-weight: 600; margin-bottom: 4px; font-size: 13px; }

.toggle-btn {
  border: 0;
  background: rgba(255,255,255,0.1);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.toggle-btn:hover { background: rgba(255,255,255,0.15); }
.toggle-btn.active { background: var(--accent); color: #fff; }
.toggle-btn.test.active { background: var(--warning); color: #000; }
.toggle-btn.real.active.connected { background: var(--success); color: #000; }
.toggle-btn.real.active.connecting { background: var(--error); color: #fff; }

.ws-status { font-size: 11px; color: var(--muted); margin-top: 4px; }

.ws-url-input {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 11px;
  width: 100%;
  margin-top: 4px;
  box-sizing: border-box;
}

.ws-url-input:focus { outline: none; border-color: var(--accent); }

/* Location Select */
.location-section { margin-top: 8px; }

.location-select {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 11px;
  width: 100%;
  cursor: pointer;
  box-sizing: border-box;
}

.location-select:focus { outline: none; border-color: var(--accent); }

.location-select option {
  background: #1a1a1a;
  color: #fff;
}

/* ============================================================================
   Buttons
   ============================================================================ */
#vrBtn {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  border: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

#vrBtn.hidden { opacity: 0; pointer-events: none; }
#vrBtn[disabled] { background: #333; cursor: not-allowed; }

/* Mobile mode toggle */
.mobile-toggle {
  position: absolute;
  bottom: 58px;
  left: 20px;
  z-index: 30;
  border: 0;
  background: var(--panel);
  color: #ccc;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

.mobile-toggle.hidden { opacity: 0; pointer-events: none; }

#audioToggle {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  border: 0;
  background: var(--panel);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.2s ease;
}

#audioToggle:hover { background: rgba(255,255,255,0.15); }

/* ============================================================================
   About Button & Modal
   ============================================================================ */
.about-btn {
  position: absolute;
  bottom: 20px;
  right: 20px;
  z-index: 25;
  border: 0;
  background: var(--panel);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 500;
  transition: all 0.3s ease;
  font-family: monospace;
}

.about-btn:hover {
  background: rgba(255,255,255,0.2);
  transform: scale(1.05);
}

.about-btn.hidden { opacity: 0; pointer-events: none; }

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background:
    linear-gradient(180deg, rgba(16, 16, 20, 0.98) 0%, rgba(12, 12, 14, 0.99) 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 18px;
  padding: 36px 36px 32px;
  max-width: 600px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  box-shadow:
    0 40px 80px -24px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    0 1px 0 rgba(255, 255, 255, 0.04) inset;
  transform: translateY(20px);
  transition: transform 0.3s ease;
  font-family: "General Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-content::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.015) 0 1px, rgba(0, 0, 0, 0) 1px 10px);
  opacity: 0.22;
  border-radius: 16px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: #888;
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  transition: color 0.2s ease;
}

.modal-close:hover { color: #fff; }

.modal-content h1 {
  margin: 0 0 4px 0;
  font-size: 34px;
  font-weight: 700;
  font-family: "Archivo", "General Sans", system-ui, sans-serif;
  letter-spacing: 1.1px;
  text-transform: uppercase;
  color: #f2f4f8;
}

.modal-content .subtitle {
  color: #b7c0cd;
  margin: 0 0 24px 0;
  font-size: 14px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.modal-body p {
  color: #cbd2dc;
  line-height: 1.8;
  margin: 0 0 16px 0;
}

.modal-body h3 {
  color: #fff;
  font-size: 16px;
  margin: 28px 0 12px 0;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.controls-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.controls-list li {
  color: #d7dde6;
  font-size: 13px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
}

.controls-list li strong {
  color: var(--accent);
  font-family: monospace;
  margin-right: 8px;
}

.modal-links {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.modal-links a {
  color: #e6ebf2;
  text-decoration: none;
  font-size: 13px;
  padding: 9px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.modal-links a:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

/* ============================================================================
   GUI Panel (lil-gui)
   ============================================================================ */
.lil-gui.root {
  --background-color: rgba(0,0,0,0.65);
  --text-color: #eee;
  --title-background-color: rgba(255,255,255,0.05);
  --widget-color: #1a1a1a;
  --hover-color: #222;
  transition: all 0.3s ease;
}

.lil-gui.root.hidden { opacity: 0; pointer-events: none; }

/* ============================================================================
   Weather Info Display
   ============================================================================ */
#weatherInfo {
  position: absolute;
  bottom: 20px;
  left: 20px;
  z-index: 20;
  background: var(--panel);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 10px;
  color: #ccc;
  transition: all 0.3s ease;
  display: none;
}

#weatherInfo.visible { display: block; }
#weatherInfo.hidden { opacity: 0; pointer-events: none; }

#weatherInfo .weather-icon { margin-right: 6px; }
#weatherInfo .weather-temp { font-weight: 600; color: #fff; }
#weatherInfo .weather-desc { color: var(--muted); margin-left: 8px; }

/* ============================================================================
   Scrollbar Styling
   ============================================================================ */
.modal-content::-webkit-scrollbar {
  width: 8px;
}

.modal-content::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.3);
}

/* ============================================================================
   Responsive Adjustments
   ============================================================================ */
@media (max-width: 768px) {
  #hud .hint { display: none; }
  #sphereModeMobile { display: block; }
  
  .controls-list {
    grid-template-columns: 1fr;
  }
  
  .modal-links {
    flex-direction: column;
  }
  
  .modal-content {
    padding: 24px;
  }
}