/* ==========================================================================
   STAR VOYAGER - 3D PROCEDURAL SPACE FLIGHT SIMULATOR STYLESHEET
   ========================================================================== */

:root {
  --neon-cyan: #00f3ff;
  --neon-pink: #ff007f;
  --neon-purple: #9d00ff;
  --neon-amber: #ffaa00;
  --neon-green: #05ffa1;
  --neon-blue: #0088ff;
  --bg-dark: #030208;
  --hud-bg: rgba(6, 12, 28, 0.72);
  --hud-border: rgba(0, 243, 255, 0.35);
  --hud-glow: rgba(0, 243, 255, 0.2);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-dark);
  color: #fff;
  font-family: 'Rajdhani', -apple-system, BlinkMacSystemFont, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Outer layout wrapper */
.game-wrapper {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
}

#game-container {
  position: relative;
  width: min(1080px, 98vw, calc((100dvh - 20px) * 16 / 9));
  aspect-ratio: 16 / 9;
  background: #010006;
  box-shadow: 
    0 0 35px rgba(0, 243, 255, 0.2),
    0 0 80px rgba(157, 0, 255, 0.12),
    inset 0 0 50px rgba(0, 0, 0, 0.85);
  border: 2px solid var(--neon-cyan);
  border-radius: 10px;
  overflow: hidden;
}

/* Fullscreen support */
#game-container:fullscreen,
#game-container:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  max-width: none;
  border-radius: 0;
  border: none;
}

/* WebGL canvas */
#webgl-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* Subtle Sci-Fi CRT scanline and vignette overlay */
.vignette-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 65%, rgba(0, 0, 0, 0.65) 100%);
  box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.7);
  z-index: 10;
}

/* ==========================================================================
   FLIGHT HUD SYSTEM
   ========================================================================== */
#hud-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 20;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 20px;
}

/* HUD Top Header Bar */
.hud-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}

.hud-panel {
  background: var(--hud-bg);
  border: 1px solid var(--hud-border);
  box-shadow: 0 0 15px var(--hud-glow), inset 0 0 10px rgba(0, 243, 255, 0.05);
  border-radius: 6px;
  padding: 8px 14px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.hud-title-tag {
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  text-transform: uppercase;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  background: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-green);
  animation: pulse-glow 1.8s infinite ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.8); }
}

.hud-main-val {
  font-family: 'Orbitron', monospace;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #fff;
  text-shadow: 0 0 10px var(--neon-cyan);
}

.hud-sub-val {
  font-size: 12px;
  color: #8da4be;
  letter-spacing: 1px;
}

.hud-top-right {
  display: flex;
  gap: 12px;
}

/* Central Reticle & Crosshair */
.reticle-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  width: 120px;
  height: 120px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.reticle-circle {
  position: absolute;
  width: 48px;
  height: 48px;
  border: 1px dashed rgba(0, 243, 255, 0.45);
  border-radius: 50%;
  animation: spin-reticle 20s linear infinite;
}

@keyframes spin-reticle {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.reticle-dot {
  width: 6px;
  height: 6px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-cyan);
}

.reticle-crosshair-h {
  position: absolute;
  width: 32px;
  height: 2px;
  background: rgba(0, 243, 255, 0.5);
}

.reticle-crosshair-v {
  position: absolute;
  height: 32px;
  width: 2px;
  background: rgba(0, 243, 255, 0.5);
}

/* 3D Target Lock Bracket */
#target-bracket {
  position: absolute;
  width: 42px;
  height: 42px;
  border: 2px solid var(--neon-pink);
  box-shadow: 0 0 10px var(--neon-pink);
  transform: translate(-50%, -50%);
  display: none;
  pointer-events: none;
  transition: opacity 0.15s ease-out;
}

#target-bracket::before {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border: 1px solid rgba(255, 0, 127, 0.4);
}

.target-info-label {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--neon-pink);
  white-space: nowrap;
  text-shadow: 0 0 8px rgba(255, 0, 127, 0.8);
}

/* Notification Banner */
#hud-alert {
  position: absolute;
  top: 18%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 0, 127, 0.2);
  border: 1px solid var(--neon-pink);
  box-shadow: 0 0 25px rgba(255, 0, 127, 0.4);
  color: #fff;
  font-family: 'Orbitron', monospace;
  font-size: 14px;
  letter-spacing: 2px;
  padding: 6px 20px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  text-transform: uppercase;
}

#hud-alert.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(5px);
}

/* HUD Bottom Dashboard */
.hud-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
}

/* Left flight meters (Speed, Throttle, Afterburner) */
.flight-meters {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 240px;
}

.meter-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.meter-label-row {
  display: flex;
  justify-content: space-between;
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  color: #8da4be;
  letter-spacing: 1px;
}

.meter-bar-frame {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(0, 243, 255, 0.3);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.meter-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
  box-shadow: 0 0 8px var(--neon-cyan);
  transition: width 0.08s linear;
}

.meter-bar-fill.boost {
  background: linear-gradient(90deg, #ff7700, #ff0055);
  box-shadow: 0 0 12px #ff0055;
}

/* Shield / Energy meters */
.systems-meters {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

.system-pill {
  flex: 1;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(0, 243, 255, 0.2);
  border-radius: 4px;
  padding: 4px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.system-title {
  font-size: 9px;
  font-family: 'Orbitron', monospace;
  color: #8da4be;
  letter-spacing: 1px;
}

.system-val {
  font-size: 13px;
  font-family: 'Orbitron', monospace;
  font-weight: 700;
  color: var(--neon-cyan);
}

/* Center Flight Hints */
.flight-hints {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: rgba(4, 9, 22, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 14px;
  border-radius: 6px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 12px;
  color: #9cb1ce;
  letter-spacing: 1px;
}

.key-badge {
  display: inline-block;
  background: rgba(0, 243, 255, 0.18);
  border: 1px solid var(--neon-cyan);
  color: #fff;
  border-radius: 3px;
  padding: 1px 5px;
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  margin: 0 2px;
}

/* Right Sensor Radar & Quick Actions */
.hud-right-deck {
  display: flex;
  align-items: flex-end;
  gap: 14px;
}

/* Circular Radar Scanner */
.radar-container {
  position: relative;
  width: 110px;
  height: 110px;
  background: radial-gradient(circle, rgba(0, 243, 255, 0.08) 0%, rgba(3, 8, 20, 0.85) 75%);
  border: 1px solid var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 243, 255, 0.25), inset 0 0 15px rgba(0, 243, 255, 0.1);
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.radar-sweep {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 75%, rgba(0, 243, 255, 0.4) 100%);
  animation: radar-rotate 4s linear infinite;
  pointer-events: none;
}

@keyframes radar-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-ring {
  position: absolute;
  border: 1px dashed rgba(0, 243, 255, 0.25);
  border-radius: 50%;
}
.radar-ring-1 { width: 40px; height: 40px; }
.radar-ring-2 { width: 80px; height: 80px; }

.radar-blips-layer {
  position: absolute;
  width: 100%;
  height: 100%;
}

.radar-center-blip {
  width: 4px;
  height: 4px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--neon-cyan);
}

.radar-tag {
  position: absolute;
  top: 4px;
  font-family: 'Orbitron', monospace;
  font-size: 8px;
  letter-spacing: 1px;
  color: rgba(0, 243, 255, 0.8);
}

/* Quick Action Icon Buttons */
.hud-btn-stack {
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: auto;
}

.hud-btn {
  width: 38px;
  height: 38px;
  background: rgba(9, 14, 30, 0.8);
  border: 1px solid var(--hud-border);
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.15);
  border-radius: 6px;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.hud-btn:hover {
  background: rgba(0, 243, 255, 0.25);
  border-color: var(--neon-cyan);
  box-shadow: 0 0 16px var(--neon-cyan);
  transform: translateY(-2px);
}

.hud-btn:active {
  transform: translateY(1px);
}

/* ==========================================================================
   MODAL DIALOGS (START SCREEN & PAUSE MENU)
   ========================================================================== */
.modal-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 50;
  background: rgba(3, 2, 10, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-layer.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content-card {
  background: rgba(9, 14, 30, 0.95);
  border: 1px solid var(--neon-cyan);
  box-shadow: 0 0 35px rgba(0, 243, 255, 0.35), inset 0 0 40px rgba(0, 243, 255, 0.06);
  border-radius: 12px;
  max-width: 680px;
  width: 100%;
  padding: 32px 36px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.modal-content-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-pink), transparent);
}

.modal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 243, 255, 0.1);
  border: 1px solid rgba(0, 243, 255, 0.4);
  padding: 4px 12px;
  border-radius: 20px;
  font-family: 'Orbitron', monospace;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--neon-cyan);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.modal-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  letter-spacing: 3px;
  text-transform: uppercase;
  background: linear-gradient(135deg, #ffffff 15%, var(--neon-cyan) 60%, var(--neon-pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 25px rgba(0, 243, 255, 0.4);
  margin-bottom: 6px;
}

.modal-desc {
  font-size: 14px;
  color: #9cb1ce;
  line-height: 1.5;
  margin-bottom: 22px;
}

/* Control Grid in Start Screen */
.controls-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  background: rgba(4, 8, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 24px;
  text-align: left;
}

.control-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.control-item-label {
  font-size: 13px;
  color: #c0d1e8;
  letter-spacing: 0.5px;
}

.btn-primary-launch {
  width: 100%;
  padding: 14px 28px;
  background: linear-gradient(135deg, #00f3ff, #0088ff);
  border: none;
  border-radius: 6px;
  font-family: 'Orbitron', sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #030814;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(0, 243, 255, 0.5);
  transition: all 0.2s ease;
  text-transform: uppercase;
}

.btn-primary-launch:hover {
  background: linear-gradient(135deg, #ffffff, #00f3ff);
  box-shadow: 0 0 35px rgba(0, 243, 255, 0.8);
  transform: translateY(-2px);
}

.btn-primary-launch:active {
  transform: translateY(1px);
}

.btn-secondary {
  margin-top: 10px;
  width: 100%;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  font-family: 'Orbitron', sans-serif;
  font-size: 12px;
  letter-spacing: 1px;
  color: #8da4be;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  border-color: #fff;
  color: #fff;
}

/* Touch controls overlay for mobile/tablet */
.mobile-controls {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  display: none;
  justify-content: space-between;
  pointer-events: none;
  z-index: 25;
}

.touch-stick-zone {
  width: 120px;
  height: 120px;
  background: rgba(0, 243, 255, 0.1);
  border: 2px dashed rgba(0, 243, 255, 0.35);
  border-radius: 50%;
  pointer-events: auto;
  position: relative;
}

.touch-btn-cluster {
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: auto;
}

.touch-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(9, 14, 30, 0.85);
  border: 2px solid var(--neon-cyan);
  color: var(--neon-cyan);
  font-family: 'Orbitron', monospace;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 12px rgba(0, 243, 255, 0.3);
}

@media (max-width: 820px) and (orientation: portrait), (max-aspect-ratio: 1/1) and (max-width: 820px) {
  .game-wrapper {
    padding: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
  }

  #game-container {
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    border-radius: 0;
    border-left: none;
    border-right: none;
    aspect-ratio: unset;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: none;
  }

  #webgl-canvas {
    width: 100vw;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    max-height: 52dvh;
    object-fit: contain;
  }

  .vignette-overlay {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100vw;
    aspect-ratio: 16 / 9;
    max-height: 52dvh;
  }

  #hud-overlay {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100vw;
    aspect-ratio: 16 / 9;
    max-height: 52dvh;
    padding: 6px 10px;
  }

  .hud-header {
    gap: 6px;
  }

  .hud-panel {
    padding: 3px 8px;
  }

  .hud-title-tag {
    font-size: 8px;
  }

  .hud-main-val {
    font-size: 11px;
  }

  .hud-sub-val {
    font-size: 8px;
  }

  .flight-hints {
    display: none;
  }

  .radar-container {
    width: 60px;
    height: 60px;
  }

  #radar-canvas {
    width: 60px;
    height: 60px;
  }

  .meter-group {
    width: 90px;
  }

  .meter-label-row {
    font-size: 8px;
  }

  .meter-bar-frame {
    height: 5px;
  }

  .systems-meters {
    gap: 4px;
  }

  .system-pill {
    padding: 2px 6px;
  }

  .system-title {
    font-size: 7.5px;
  }

  .system-val {
    font-size: 9.5px;
  }

  .hud-btn {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }

  .mobile-controls {
    display: flex;
    position: absolute;
    bottom: max(16px, env(safe-area-inset-bottom));
    left: 16px;
    right: 16px;
    z-index: 30;
  }

  .touch-stick-zone {
    width: 100px;
    height: 100px;
  }

  .touch-btn {
    width: 52px;
    height: 52px;
    font-size: 10px;
  }

  .modal-layer {
    position: absolute;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    padding: 16px;
    z-index: 50;
    display: none;
    align-items: center;
    justify-content: center;
  }

  .modal-layer.active {
    display: flex;
  }

  .modal-content-card {
    width: min(440px, 94vw);
    max-height: 85dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 18px 16px;
  }

  .modal-title {
    font-size: 26px;
  }

  .modal-desc {
    font-size: 11px;
    line-height: 1.4;
    margin-bottom: 12px;
  }

  .controls-grid {
    grid-template-columns: 1fr;
    gap: 6px;
    margin-bottom: 14px;
  }

  .control-item {
    font-size: 10.5px;
  }

  .btn-primary-launch {
    padding: 12px 24px;
    font-size: 13px;
    width: 100%;
  }
}

@media (orientation: landscape) and (max-height: 600px) {
  .game-wrapper {
    padding: 4px;
    height: 100vh;
    height: 100dvh;
  }

  #game-container {
    width: min(1080px, 98vw, calc((100dvh - 8px) * 16 / 9));
    height: calc(100dvh - 8px);
    aspect-ratio: 16 / 9;
  }

  .modal-content-card {
    max-height: 90dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px 18px;
  }

  .modal-title {
    font-size: 22px;
    margin-bottom: 4px;
  }

  .modal-desc {
    display: none;
  }

  .flight-hints {
    display: none;
  }

  .mobile-controls {
    display: flex;
    bottom: 8px;
    left: 8px;
    right: 8px;
  }

  .touch-stick-zone {
    width: 80px;
    height: 80px;
  }

  .touch-btn {
    width: 44px;
    height: 44px;
    font-size: 9px;
  }
}