/* ============================================
   HELIOCENTRIC SOLAR SYSTEM — Core Styles
   ============================================ */

:root {
  --glass-bg: rgba(10, 10, 30, 0.75);
  --glass-border: rgba(255, 255, 255, 0.15);
  --text-primary: #e8e8f0;
  --text-secondary: #9898b0;
  --accent: #64b5f6;
}

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

body {
  height: 100vh; width: 100vw; background: #000; overflow: hidden;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text-primary);
}

.skip-link {
  position: absolute; top: -100px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #000; padding: 8px 16px;
  border-radius: 0 0 8px 8px; z-index: 10000; text-decoration: none; font-weight: 600;
}
.skip-link:focus { top: 0; }

#scene { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; cursor: grab; }
#scene:active { cursor: grabbing; }

/* Hover label */
.hover-label {
  position: fixed; z-index: 50; pointer-events: none;
  font-size: 13px; font-weight: 600; color: #fff;
  text-shadow: 0 1px 6px rgba(0,0,0,0.9);
  background: rgba(0,0,0,0.5); padding: 3px 10px; border-radius: 6px;
  transform: translate(-50%, -100%); opacity: 0;
  transition: opacity 0.2s ease; white-space: nowrap;
}
.hover-label.visible { opacity: 1; }

/* Time display */
.time-display {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  font-size: 13px; color: var(--text-secondary);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  padding: 6px 16px; border-radius: 10px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  z-index: 50; font-variant-numeric: tabular-nums; letter-spacing: 0.3px;
}

/* Search */
.search-container {
  position: fixed; top: 20px; right: 20px; z-index: 90; width: 180px;
}
.search-input {
  width: 100%; padding: 6px 12px; border-radius: 8px;
  border: 1px solid var(--glass-border); background: var(--glass-bg);
  color: var(--text-primary); font-size: 13px; outline: none;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.search-input::placeholder { color: var(--text-secondary); }
.search-input:focus { border-color: var(--accent); }
.search-results {
  display: none; margin-top: 4px; background: var(--glass-bg);
  border: 1px solid var(--glass-border); border-radius: 8px;
  overflow: hidden; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.search-result {
  display: block; width: 100%; padding: 8px 12px; border: none;
  background: none; color: var(--text-primary); font-size: 13px;
  text-align: left; cursor: pointer; transition: background 0.15s;
}
.search-result:hover { background: rgba(100,181,246,0.15); }

/* Planet Quick-Nav */
.planet-nav {
  position: fixed; top: 50%; left: 16px; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 8px; z-index: 80;
}
.nav-dot {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.3); cursor: pointer;
  transition: all 0.2s ease; padding: 0;
}
.nav-dot:hover {
  transform: scale(1.4); border-color: rgba(255,255,255,0.8);
  box-shadow: 0 0 8px rgba(255,255,255,0.3);
}
.nav-dot:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Minimap */
.minimap {
  position: fixed; bottom: 80px; right: 16px; width: 180px; height: 180px;
  border-radius: 12px; overflow: hidden;
  border: 1px solid var(--glass-border); background: rgba(0,0,5,0.6); z-index: 60;
}
.minimap canvas { display: block; width: 100%; height: 100%; }

/* PiP */
.pip-container {
  position: fixed; top: 70px; right: 16px; width: 200px; height: 220px;
  border-radius: 12px; overflow: hidden;
  border: 1px solid var(--glass-border); background: rgba(0,0,5,0.6); z-index: 70;
}
.pip-container canvas { display: block; width: 100%; height: 200px; }
.pip-label {
  display: block; text-align: center; font-size: 11px;
  color: var(--text-secondary); padding: 3px;
  background: var(--glass-bg);
}

/* Tour overlay */
.tour-overlay {
  position: fixed; top: 60px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  padding: 8px 16px; border-radius: 10px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  z-index: 90; opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
}
.tour-overlay.visible { opacity: 1; pointer-events: auto; }
.tour-overlay span { font-size: 13px; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.tour-stop-btn {
  font-size: 12px; padding: 4px 12px; border-radius: 6px;
  border: 1px solid var(--accent); background: rgba(100,181,246,0.15);
  color: var(--accent); cursor: pointer; transition: background 0.2s;
}
.tour-stop-btn:hover { background: rgba(100,181,246,0.3); }

/* Loading screen */
.loading-screen {
  position: fixed; inset: 0; z-index: 9999; background: #000005;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease;
}
.loading-screen.fade-out { opacity: 0; pointer-events: none; }
.loading-content { text-align: center; }
.loading-sun {
  width: 60px; height: 60px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffd200, #f7971e, #ff512f);
  box-shadow: 0 0 30px rgba(255,128,0,0.6), 0 0 60px rgba(255,100,0,0.3);
  margin: 0 auto 24px; animation: loadingPulse 1.5s ease-in-out infinite alternate;
}
@keyframes loadingPulse {
  0% { transform: scale(1); box-shadow: 0 0 30px rgba(255,128,0,0.6); }
  100% { transform: scale(1.1); box-shadow: 0 0 50px rgba(255,128,0,0.8), 0 0 80px rgba(255,100,0,0.4); }
}
#loading-text { font-size: 14px; color: var(--text-secondary); margin-bottom: 16px; }
.loading-bar-track {
  width: 200px; height: 3px; background: rgba(255,255,255,0.1);
  border-radius: 2px; margin: 0 auto; overflow: hidden;
}
.loading-bar {
  width: 0%; height: 100%; background: linear-gradient(90deg, #ff8800, #ffd200);
  border-radius: 2px; transition: width 0.3s ease;
}

/* Info badge */
.info-badge {
  display: none; font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px;
  background: rgba(100,181,246,0.2); color: var(--accent);
  padding: 2px 8px; border-radius: 4px;
  border: 1px solid rgba(100,181,246,0.3); margin-left: 8px; align-self: center;
}