/* ============================================================
   COSMOS EXPLORER — HUD & UI styling
   Futuristic neon rocket-explorer aesthetic
   ============================================================ */

:root {
  --cyan: #38f6ff;
  --magenta: #ff2ec4;
  --amber: #ffb454;
  --danger: #ff3b5c;
  --panel-bg: rgba(6, 12, 30, 0.42);
  --panel-border: rgba(56, 246, 255, 0.35);
  --hud-font: 'Orbitron', 'Rajdhani', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #05010f;
  color: #dff6ff;
  font-family: var(--hud-font);
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: none;
  overscroll-behavior: none;
}

#game-root, canvas { display: block; }
#game-root canvas {
  position: fixed;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
}

.hidden { display: none !important; }

/* ---------------- HUD ---------------- */
#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  padding: max(14px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right))
           max(14px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
  font-weight: 600;
  letter-spacing: 0.06em;
}

.hud-corner { position: absolute; display: flex; gap: 12px; }
.hud-topleft { top: max(14px, env(safe-area-inset-top)); left: max(14px, env(safe-area-inset-left)); }
.hud-topright { top: max(14px, env(safe-area-inset-top)); right: max(14px, env(safe-area-inset-right)); }
.hud-bottomleft { bottom: max(14px, env(safe-area-inset-bottom)); left: max(14px, env(safe-area-inset-left)); }
.hud-bottomright { bottom: max(14px, env(safe-area-inset-bottom)); right: max(14px, env(safe-area-inset-right)); }

.hud-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 8px 12px;
  min-width: 92px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 0 18px rgba(56, 246, 255, 0.12), inset 0 0 22px rgba(56, 246, 255, 0.05);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.align-right { text-align: right; }

.hud-label {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: rgba(160, 220, 255, 0.7);
  text-transform: uppercase;
}
.hud-value {
  font-size: 30px;
  line-height: 1.05;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.hud-value.small { font-size: 22px; }
.hud-sub { font-size: 10px; letter-spacing: 0.16em; color: rgba(180, 230, 255, 0.65); margin-top: 2px; }

.glow-cyan { color: var(--cyan); text-shadow: 0 0 10px rgba(56,246,255,0.8), 0 0 26px rgba(56,246,255,0.45); }
.glow-magenta { color: var(--magenta); text-shadow: 0 0 10px rgba(255,46,196,0.8), 0 0 26px rgba(255,46,196,0.4); }
.glow-amber { color: var(--amber); text-shadow: 0 0 10px rgba(255,180,84,0.8); font-weight: 800; }

/* System buttons (pause / mute) */
.sys-buttons { display: flex; gap: 8px; justify-content: flex-end; margin-bottom: 8px; pointer-events: auto; }
.sys-btn {
  width: 40px; height: 40px;
  border-radius: 9px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  color: var(--cyan);
  font-size: 15px;
  font-family: var(--hud-font);
  cursor: pointer;
  backdrop-filter: blur(6px);
  box-shadow: 0 0 14px rgba(56,246,255,0.18);
  transition: transform 0.06s, background 0.1s;
}
.sys-btn:hover { background: rgba(56,246,255,0.18); }
.sys-btn:active { transform: scale(0.92); }

/* Floating score / streak popups */
#popups { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.popup {
  position: absolute;
  transform: translate(-50%, -50%);
  font-family: var(--hud-font);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-shadow: 0 0 10px currentColor;
  animation: popupFloat 1.05s ease-out forwards;
}
.popup.big { font-size: 30px; }
@keyframes popupFloat {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  18% { opacity: 1; transform: translate(-50%, -60%) scale(1.15); }
  35% { transform: translate(-50%, -68%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -140%) scale(0.95); }
}

/* Bars */
.bar {
  width: 200px;
  max-width: 42vw;
  height: 12px;
  background: rgba(0,0,0,0.4);
  border: 1px solid rgba(120, 200, 255, 0.25);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}
.bar-fill {
  height: 100%;
  width: 100%;
  transition: width 0.18s ease-out, background 0.3s;
  border-radius: 5px;
}
.bar-fill.health { background: linear-gradient(90deg, #ff5b7a, #ff9a3c, #46ffa0); box-shadow: 0 0 12px rgba(70,255,160,0.6); }
.bar-fill.shield { background: linear-gradient(90deg, #2a6bff, #38f6ff); box-shadow: 0 0 12px rgba(56,246,255,0.6); }

/* Radar */
.radar-panel { padding: 8px; }
#radar { display: block; width: 130px; height: 130px; margin-top: 4px; }

/* Crosshair */
#crosshair {
  position: absolute;
  left: 50%; top: 50%;
  width: 64px; height: 64px;
  transform: translate(-50%, -50%);
  opacity: 0.85;
}
.ch-ring {
  position: absolute; inset: 0;
  border: 2px solid rgba(56, 246, 255, 0.6);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(56,246,255,0.5), inset 0 0 8px rgba(56,246,255,0.3);
}
.ch-dot {
  position: absolute; left: 50%; top: 50%;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 8px var(--cyan);
}
.ch-tick { position: absolute; background: rgba(56,246,255,0.7); box-shadow: 0 0 6px rgba(56,246,255,0.6); }
.ch-tick.t, .ch-tick.b { width: 2px; height: 10px; left: 50%; transform: translateX(-50%); }
.ch-tick.l, .ch-tick.r { height: 2px; width: 10px; top: 50%; transform: translateY(-50%); }
.ch-tick.t { top: -14px; } .ch-tick.b { bottom: -14px; }
.ch-tick.l { left: -14px; } .ch-tick.r { right: -14px; }

/* Lock-on marker */
#lock-marker {
  position: absolute;
  width: 54px; height: 54px;
  margin-left: -27px; margin-top: -27px;
  border: 2px solid var(--danger);
  border-radius: 6px;
  box-shadow: 0 0 14px rgba(255,59,92,0.7);
  transition: opacity 0.1s;
  animation: lockpulse 0.7s infinite ease-in-out;
}
@keyframes lockpulse { 0%,100% { transform: scale(1); opacity: 0.9;} 50% { transform: scale(0.82); opacity: 1; } }

/* Boss health bar */
#boss-bar {
  position: absolute;
  left: 50%; top: 64px;
  transform: translateX(-50%);
  width: min(560px, 80vw);
  text-align: center;
}
.boss-label {
  font-size: 13px;
  letter-spacing: 0.3em;
  font-weight: 800;
  color: #ff5ec4;
  text-shadow: 0 0 12px rgba(255,94,196,0.8);
  margin-bottom: 5px;
  animation: bosspulse 1.1s infinite ease-in-out;
}
@keyframes bosspulse { 0%,100% { opacity: 0.75; } 50% { opacity: 1; } }
.boss-track {
  height: 14px;
  border: 1px solid rgba(221,136,255,0.6);
  border-radius: 7px;
  background: rgba(0,0,0,0.5);
  overflow: hidden;
  box-shadow: 0 0 18px rgba(170,68,255,0.5);
  clip-path: polygon(10px 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 10px 100%, 0 50%);
}
#boss-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #6a1fd0, #aa44ff, #ff5ec4);
  box-shadow: 0 0 14px rgba(221,136,255,0.8);
  transition: width 0.2s ease-out;
}

/* Toast */
#toast {
  position: absolute;
  left: 50%; top: 22%;
  transform: translateX(-50%);
  text-align: center;
  font-size: clamp(22px, 5vw, 44px);
  font-weight: 900;
  letter-spacing: 0.14em;
  color: #fff;
  text-shadow: 0 0 18px var(--cyan), 0 0 40px rgba(56,246,255,0.6);
  opacity: 0;
  transition: opacity 0.3s;
}
#toast.show { opacity: 1; animation: toastpop 0.5s ease-out; }
@keyframes toastpop { 0% { transform: translateX(-50%) scale(0.6); } 60% { transform: translateX(-50%) scale(1.12);} 100% { transform: translateX(-50%) scale(1);} }

/* Damage flash */
#damage-flash {
  position: absolute; inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 160px 40px rgba(255, 40, 70, 0.0);
  transition: box-shadow 0.5s ease-out;
}
#damage-flash.hit { box-shadow: inset 0 0 200px 70px rgba(255, 40, 70, 0.65); transition: box-shadow 0.05s; }

/* ---------------- Touch controls ---------------- */
#touch-controls {
  position: fixed;
  inset: 0;
  z-index: 30;
  pointer-events: none;
}
#joystick-zone {
  position: absolute;
  left: 0; bottom: 0;
  width: 45%; height: 55%;
  pointer-events: auto;
}
#joystick-base {
  position: absolute;
  width: 130px; height: 130px;
  border-radius: 50%;
  border: 2px solid rgba(56,246,255,0.4);
  background: radial-gradient(circle, rgba(56,246,255,0.08), rgba(6,12,30,0.25));
  box-shadow: 0 0 24px rgba(56,246,255,0.25);
  opacity: 0;
  transition: opacity 0.15s;
  transform: translate(-50%, -50%);
}
#joystick-base.active { opacity: 1; }
#joystick-thumb {
  position: absolute;
  left: 50%; top: 50%;
  width: 58px; height: 58px;
  margin-left: -29px; margin-top: -29px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56,246,255,0.9), rgba(20,120,180,0.5));
  box-shadow: 0 0 20px rgba(56,246,255,0.8);
}
#touch-buttons {
  position: absolute;
  right: max(20px, env(safe-area-inset-right));
  bottom: max(28px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  pointer-events: none;
}
.touch-btn {
  pointer-events: auto;
  width: 108px; height: 108px;
  border-radius: 50%;
  border: 2px solid rgba(56,246,255,0.5);
  background: rgba(6,12,30,0.4);
  color: var(--cyan);
  font-family: var(--hud-font);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.1em;
  backdrop-filter: blur(4px);
  box-shadow: 0 0 22px rgba(56,246,255,0.3);
  transition: transform 0.06s, background 0.1s;
}
.touch-btn:active { transform: scale(0.9); background: rgba(56,246,255,0.25); }
.touch-btn.fire {
  width: 128px; height: 128px;
  border-color: rgba(255,59,92,0.7);
  color: #ff8098;
  box-shadow: 0 0 28px rgba(255,59,92,0.4);
}
.touch-btn.fire:active { background: rgba(255,59,92,0.3); }
.touch-btn.missile {
  width: 84px; height: 84px;
  border-color: rgba(255,180,84,0.7);
  color: var(--amber);
  box-shadow: 0 0 22px rgba(255,180,84,0.35);
}
.touch-btn.missile:active { background: rgba(255,180,84,0.28); }

/* ---------------- Overlay screens ---------------- */
.overlay-screen {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 30%, rgba(20,10,50,0.7), rgba(3,1,12,0.95));
  backdrop-filter: blur(3px);
  text-align: center;
  padding: 24px;
  overflow-y: auto;
}
.menu-inner { max-width: 760px; width: 100%; }

.title {
  font-size: clamp(42px, 11vw, 104px);
  font-weight: 900;
  letter-spacing: 0.04em;
  margin: 0 0 6px;
  line-height: 0.95;
  color: #fff;
  text-shadow: 0 0 26px rgba(56,246,255,0.8), 0 0 60px rgba(255,46,196,0.4);
}
.title span { color: var(--magenta); display: block; text-shadow: 0 0 26px rgba(255,46,196,0.9); }
.title.small { font-size: clamp(34px, 8vw, 68px); color: var(--danger); text-shadow: 0 0 30px rgba(255,59,92,0.8); }

.tagline { font-size: clamp(13px, 2.6vw, 18px); color: rgba(190,225,255,0.85); margin: 4px 0 26px; letter-spacing: 0.08em; }

.cta {
  font-family: var(--hud-font);
  font-size: clamp(20px, 4vw, 30px);
  font-weight: 800;
  letter-spacing: 0.18em;
  color: #04121a;
  background: linear-gradient(120deg, var(--cyan), #7affd1);
  border: none;
  border-radius: 12px;
  padding: 16px 48px;
  cursor: pointer;
  box-shadow: 0 0 30px rgba(56,246,255,0.6), 0 6px 0 rgba(20,120,150,0.5);
  transition: transform 0.08s, box-shadow 0.2s;
}
.cta:hover { transform: translateY(-2px); box-shadow: 0 0 44px rgba(56,246,255,0.9), 0 8px 0 rgba(20,120,150,0.5); }
.cta:active { transform: translateY(2px); box-shadow: 0 0 30px rgba(56,246,255,0.6), 0 2px 0 rgba(20,120,150,0.5); }

.controls-hint {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 34px auto 10px;
  text-align: left;
}
.ctrl-col {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 14px 18px;
  min-width: 190px;
  flex: 1 1 190px;
  max-width: 230px;
}
.ctrl-col h3 { margin: 0 0 8px; font-size: 13px; letter-spacing: 0.2em; color: var(--cyan); }
.ctrl-col p { margin: 4px 0; font-size: 12.5px; color: rgba(200,230,255,0.8); font-weight: 500; letter-spacing: 0.03em; }
.ctrl-col b { color: #eafcff; font-weight: 700; }

.foot { margin-top: 22px; font-size: 12px; color: rgba(170,210,255,0.55); letter-spacing: 0.08em; }

.score-readout {
  display: flex;
  gap: 26px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 26px 0 34px;
}
.score-readout > div { min-width: 120px; }

/* ---------------- Loader ---------------- */
#loader { background: #05010f; }
.loader-inner { text-align: center; }
.loader-ring {
  width: 66px; height: 66px;
  margin: 0 auto 18px;
  border: 4px solid rgba(56,246,255,0.15);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  box-shadow: 0 0 24px rgba(56,246,255,0.4);
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text { font-size: 13px; letter-spacing: 0.24em; color: rgba(160,220,255,0.75); }

@keyframes fadeout { to { opacity: 0; visibility: hidden; } }
.fade-out { animation: fadeout 0.5s forwards; }

/* Small screens: shrink HUD a touch */
@media (max-width: 560px) {
  .hud-value { font-size: 22px; }
  .hud-panel { padding: 6px 9px; min-width: 72px; }
  #radar { width: 92px; height: 92px; }
  .radar-panel { padding: 6px; }
  .bar { width: 150px; }
  .touch-btn { width: 88px; height: 88px; font-size: 14px; }
  .touch-btn.fire { width: 104px; height: 104px; }
}