/* Overdrive Breakout — full-bleed neon arcade UI.
   Canvas fills the viewport; DOM overlays (HUD, screens, touch buttons)
   float on top. Menu & game-over screens are pointer-events:none so taps
   fall through to the canvas and start the game; paused stays interactive. */

:root {
  --bg: #05070f;
  --cyan: #7df9ff;
  --blue: #3aa0ff;
  --gold: #ffd75e;
  --magenta: #ff4dd8;
  --text: #d7e9ff;
  --dim: #6f87a8;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0; padding: 0; width: 100%; height: 100%;
  overflow: hidden; overscroll-behavior: none;
  background: var(--bg); color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  user-select: none; -webkit-user-select: none;
  touch-action: none;
}

[hidden] { display: none !important; }

#game-root { position: fixed; inset: 0; }

canvas#gameCanvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block; touch-action: none;
}

/* ----------------------------------------------------------------- HUD */

.hud { position: absolute; inset: 0; pointer-events: none; z-index: 5; font-weight: 700; letter-spacing: 0.06em; }

.hud-top {
  position: absolute;
  top: calc(8px + env(safe-area-inset-top, 0px));
  left: calc(12px + env(safe-area-inset-left, 0px));
  right: calc(12px + env(safe-area-inset-right, 0px));
  display: flex; align-items: flex-start; justify-content: space-between; gap: 10px;
}

.hud-score {
  display: flex; flex-direction: column;
  font-size: clamp(18px, 2.6vw, 30px);
  color: var(--text);
  text-shadow: 0 0 12px rgba(125, 249, 255, 0.55);
}
.hud-label { font-size: 0.42em; letter-spacing: 0.3em; color: var(--dim); text-shadow: none; }

.hud-right { display: flex; align-items: center; gap: 14px; font-size: clamp(14px, 2vw, 22px); }
.hud-lives { display: flex; gap: 6px; }
.hud-lives .life {
  color: var(--cyan); font-size: 1.2em; line-height: 1;
  text-shadow: 0 0 10px rgba(125, 249, 255, 0.9);
}
.hud-level { color: var(--dim); font-size: 1em; letter-spacing: 0.18em; }

.hud-mul {
  position: absolute;
  top: calc(4px + env(safe-area-inset-top, 0px));
  left: 50%; transform: translateX(-50%);
  text-align: center;
}
.hud-mul-x {
  display: inline-block;
  font-size: clamp(26px, 4.5vw, 52px);
  font-weight: 800; color: var(--cyan);
  text-shadow: 0 0 14px rgba(125, 249, 255, 0.8);
  animation: mulPop 0.25s ease-out;
}
.hud-mul.hot .hud-mul-x {
  color: var(--gold);
  text-shadow: 0 0 10px rgba(255, 215, 94, 0.9), 0 0 30px rgba(255, 120, 40, 0.7);
  animation: mulPulse 0.6s ease-in-out infinite alternate;
}
@keyframes mulPop { from { transform: scale(1.6); } to { transform: scale(1); } }
@keyframes mulPulse { from { transform: scale(1); } to { transform: scale(1.12); } }

.hud-od {
  position: absolute;
  top: calc(clamp(40px, 7vw, 74px) + env(safe-area-inset-top, 0px));
  left: 50%; transform: translateX(-50%);
  width: clamp(160px, 30vw, 320px);
  height: 10px; border-radius: 6px;
  background: rgba(125, 249, 255, 0.10);
  border: 1px solid rgba(125, 249, 255, 0.25);
  overflow: hidden;
}
.hud-od-fill {
  height: 100%; width: 0%; border-radius: 6px;
  background: linear-gradient(90deg, var(--blue), var(--cyan) 55%, var(--magenta));
  box-shadow: 0 0 12px rgba(125, 249, 255, 0.8);
  transition: width 0.12s linear;
}
.hud-od-txt {
  position: absolute; left: 0; right: 0; top: 12px;
  text-align: center; font-size: 9px; letter-spacing: 0.42em; color: var(--dim);
}
.hud-od.max { border-color: rgba(255, 215, 94, 0.8); animation: odMax 0.5s ease-in-out infinite alternate; }
.hud-od.max .hud-od-fill {
  background: linear-gradient(90deg, var(--gold), #ff9a3d 55%, var(--magenta));
  box-shadow: 0 0 18px rgba(255, 180, 60, 0.95);
}
@keyframes odMax {
  from { box-shadow: 0 0 8px rgba(255, 215, 94, 0.4); }
  to   { box-shadow: 0 0 22px rgba(255, 215, 94, 0.9); }
}

.hud-powerups {
  position: absolute;
  bottom: calc(14px + env(safe-area-inset-bottom, 0px));
  right: calc(14px + env(safe-area-inset-right, 0px));
  display: flex; flex-direction: column; gap: 10px;
}
.pup-icon { position: relative; width: 46px; height: 46px; }
.pup-ring { width: 100%; height: 100%; transform: rotate(-90deg); }
.pup-bg { fill: rgba(5, 10, 20, 0.55); stroke: rgba(255, 255, 255, 0.18); stroke-width: 3; }
.pup-fg {
  fill: none; stroke: var(--pup-color, #fff); stroke-width: 3; stroke-linecap: round;
  filter: drop-shadow(0 0 4px var(--pup-color, #fff));
}
.pup-letter {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 800;
  color: var(--pup-color, #fff); text-shadow: 0 0 8px var(--pup-color, #fff);
}

/* ------------------------------------------------------- tip & toast */

.tip {
  position: absolute; left: 50%; bottom: 24%;
  transform: translateX(-50%);
  z-index: 6; pointer-events: none;
  font-size: clamp(15px, 2.4vw, 22px);
  font-weight: 700; letter-spacing: 0.08em;
  color: var(--gold); text-shadow: 0 0 14px rgba(255, 215, 94, 0.7);
  white-space: nowrap; animation: tipIn 0.3s ease-out;
}
@keyframes tipIn {
  from { opacity: 0; transform: translate(-50%, 14px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

.toast {
  position: absolute;
  top: calc(18px + env(safe-area-inset-top, 0px));
  left: 50%; transform: translateX(-50%);
  z-index: 9; pointer-events: none;
  padding: 10px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 700; letter-spacing: 0.14em;
  color: var(--cyan);
  background: rgba(8, 16, 30, 0.85);
  border: 1px solid rgba(125, 249, 255, 0.5);
  box-shadow: 0 0 18px rgba(125, 249, 255, 0.35);
}

/* --------------------------------------------------------------- screens */

.screen {
  position: absolute; inset: 0; z-index: 10;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  background: radial-gradient(ellipse at 50% 42%,
              rgba(5, 8, 16, 0.42) 0%,
              rgba(5, 8, 16, 0.78) 72%,
              rgba(3, 5, 10, 0.92) 100%);
}

/* Menu & game-over: let taps through to the canvas to start. */
.screen.menu, .screen.gameover { pointer-events: none; }

.menu-box { text-align: center; max-width: 640px; width: 100%; padding: 28px 24px; }
.menu-box.small { max-width: 420px; }

.title {
  margin: 0 0 6px;
  font-size: clamp(34px, 8vw, 84px);
  line-height: 0.95; font-weight: 900; letter-spacing: 0.04em;
  background: linear-gradient(180deg, #ffffff 10%, var(--cyan) 55%, var(--blue) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 22px rgba(125, 249, 255, 0.55));
}

.title2 {
  margin: 0 0 18px;
  font-size: clamp(26px, 5vw, 48px);
  font-weight: 900; letter-spacing: 0.12em;
  color: var(--text); text-shadow: 0 0 18px rgba(125, 249, 255, 0.6);
}
.gameover-title { color: #ff7a8a; text-shadow: 0 0 18px rgba(255, 90, 110, 0.65); }

.subtitle {
  margin: 0 0 22px;
  font-size: clamp(13px, 2vw, 17px);
  font-weight: 600; letter-spacing: 0.1em;
  color: var(--dim);
}

.start-hint {
  font-size: clamp(14px, 2.2vw, 19px);
  font-weight: 800; letter-spacing: 0.22em;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(125, 249, 255, 0.7);
}
.blink { animation: blink 1.4s ease-in-out infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

.best {
  margin: 16px 0 4px;
  font-size: clamp(13px, 1.8vw, 16px);
  letter-spacing: 0.2em; color: var(--dim);
}
.best span { color: var(--gold); text-shadow: 0 0 10px rgba(255, 215, 94, 0.6); }

.final {
  margin: 0 0 6px;
  font-size: clamp(15px, 2.2vw, 20px);
  letter-spacing: 0.18em; color: var(--dim);
}
.final span { color: var(--text); font-size: 1.3em; text-shadow: 0 0 12px rgba(125, 249, 255, 0.6); }

.newbest {
  margin: 14px 0 4px;
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: clamp(13px, 1.8vw, 16px);
  font-weight: 800; letter-spacing: 0.24em;
  color: #1a0f00;
  background: linear-gradient(90deg, var(--gold), #ff9a3d);
  box-shadow: 0 0 22px rgba(255, 200, 80, 0.75);
  animation: mulPulse 0.6s ease-in-out infinite alternate;
}

.controls {
  margin-top: 22px;
  display: flex; flex-direction: column; gap: 7px;
  font-size: clamp(10px, 1.5vw, 13px);
  letter-spacing: 0.12em;
  color: var(--dim);
}
.controls b { color: var(--text); font-weight: 700; }

/* Paused screen buttons (interactive) */
.btn {
  display: block;
  width: 100%;
  margin: 0 0 12px;
  padding: 14px 20px;
  min-height: 52px;
  font: inherit; font-weight: 800; font-size: 15px; letter-spacing: 0.18em;
  color: var(--text);
  background: rgba(125, 249, 255, 0.06);
  border: 1px solid rgba(125, 249, 255, 0.4);
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
  touch-action: manipulation;
}
.btn:hover { background: rgba(125, 249, 255, 0.16); box-shadow: 0 0 18px rgba(125, 249, 255, 0.3); }
.btn:active { transform: scale(0.97); }
.btn.primary {
  color: #04121a;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
  border-color: transparent;
  box-shadow: 0 0 24px rgba(125, 249, 255, 0.5);
}
.btn.primary:hover { background: linear-gradient(180deg, #a5fbff, #5cb2ff); }
.keys { margin: 8px 0 0; font-size: 12px; letter-spacing: 0.16em; color: var(--dim); }

/* Level clear splash */
.screen.levelclear { pointer-events: none; }
.splash {
  text-align: center;
  animation: splashIn 0.35s cubic-bezier(0.2, 1.6, 0.4, 1);
}
.splash-title {
  font-size: clamp(30px, 6vw, 64px);
  background: linear-gradient(180deg, #ffffff 15%, var(--gold) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 26px rgba(255, 215, 94, 0.6));
}
.splash-bonus {
  margin-top: 10px;
  font-size: clamp(20px, 3.4vw, 36px);
  font-weight: 900; letter-spacing: 0.1em;
  color: var(--gold);
  text-shadow: 0 0 18px rgba(255, 215, 94, 0.8);
}
@keyframes splashIn {
  from { opacity: 0; transform: scale(0.4); }
  to   { opacity: 1; transform: scale(1); }
}

/* ------------------------------------------------------ touch controls */

.touch-btns {
  position: absolute;
  top: calc(8px + env(safe-area-inset-top, 0px));
  right: calc(8px + env(safe-area-inset-right, 0px));
  display: flex; flex-direction: column; gap: 10px;
  z-index: 20;
}
.tbtn {
  width: 52px; height: 52px;
  font-size: 22px; line-height: 1;
  color: var(--cyan);
  background: rgba(8, 16, 30, 0.55);
  border: 1px solid rgba(125, 249, 255, 0.35);
  border-radius: 14px;
  cursor: pointer;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  touch-action: manipulation;
}
.tbtn:active { background: rgba(125, 249, 255, 0.25); }

.rotate-hint {
  position: absolute;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  left: 50%; transform: translateX(-50%);
  z-index: 20; pointer-events: none;
  display: flex; align-items: center;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.22em;
  color: var(--gold);
  background: rgba(8, 16, 30, 0.7);
  border: 1px solid rgba(255, 215, 94, 0.45);
  box-shadow: 0 0 16px rgba(255, 215, 94, 0.3);
  white-space: nowrap;
}

/* Portrait phones: nudge touch buttons clear of the letterboxed field */
@media (orientation: portrait) {
  .touch-btns { top: auto; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
  .hud-powerups { bottom: auto; top: calc(74px + env(safe-area-inset-top, 0px)); }
}