/* Neon Runner — dark + cyan (Eco Tap brand) */

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

:root {
  --bg: #0b0f14;
  --bg-panel: rgba(11, 15, 20, 0.94);
  --text: #e8eef4;
  --muted: #8b9bb0;
  --accent: #4fc3f7;
  --accent-bright: #7df9ff;
  --accent-dim: #3a8fb7;
  --danger: #ff5a5a;
  --glow: 0 0 24px rgba(79, 195, 247, 0.45);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  background: var(--bg);
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: default;
}

#fail-flash {
  position: absolute;
  inset: 0;
  background: rgba(255, 90, 90, 0.55);
  opacity: 0;
  pointer-events: none;
  z-index: 4;
}

#fail-flash.show {
  animation: failFlash 220ms ease-out forwards;
}

@keyframes failFlash {
  0% { opacity: 1; }
  40% { opacity: 0.7; }
  100% { opacity: 0; }
}

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(24px + var(--safe-top)) 20px calc(24px + var(--safe-bottom));
  background: rgba(8, 12, 18, 0.72);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 10;
}

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

.panel {
  width: min(360px, 100%);
  padding: 2rem 1.5rem;
  text-align: center;
  background: var(--bg-panel);
  border: 1px solid rgba(79, 195, 247, 0.22);
  border-radius: 20px;
  box-shadow: var(--glow), 0 16px 48px rgba(0, 0, 0, 0.5);
}

.lang-picker {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
}

.lang-btn {
  min-width: 2.4rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: transparent;
  border: 1px solid rgba(139, 155, 176, 0.35);
  border-radius: 999px;
  cursor: pointer;
}

.lang-btn.active,
.lang-btn[aria-pressed="true"] {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

.badge {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  border: 1px solid rgba(79, 195, 247, 0.35);
  border-radius: 999px;
}

h1 {
  font-size: clamp(2rem, 8vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, var(--accent-bright), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 18px rgba(79, 195, 247, 0.35));
}

h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--danger);
  margin-bottom: 0.5rem;
}

.tagline {
  margin: 0.4rem 0 1.1rem;
  color: var(--muted);
  font-size: 1rem;
}

.howto {
  list-style: none;
  text-align: left;
  margin: 0 0 1.25rem;
  padding: 0.85rem 1rem;
  background: rgba(79, 195, 247, 0.08);
  border: 1px solid rgba(79, 195, 247, 0.22);
  border-radius: 12px;
  font-size: 0.86rem;
  color: #a8b8cc;
  line-height: 1.5;
}

.howto li {
  margin: 0.35rem 0;
  padding-left: 1.1rem;
  position: relative;
}

.howto li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.btn {
  display: block;
  width: 100%;
  margin: 0.45rem 0;
  padding: 0.85rem 1.2rem;
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-play,
.btn-primary {
  color: #061018;
  background: linear-gradient(180deg, var(--accent-bright), var(--accent));
  box-shadow: var(--glow);
}

.btn-ghost {
  color: var(--text);
  background: transparent;
  border: 1px solid rgba(139, 155, 176, 0.35);
}

.btn-tip {
  color: var(--accent);
  background: rgba(79, 195, 247, 0.08);
  border: 1px solid rgba(79, 195, 247, 0.28);
  font-size: 0.9rem;
}

.hint {
  margin-top: 0.85rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.studio {
  margin-top: 0.65rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(139, 155, 176, 0.65);
}

.result {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--accent-bright);
  margin: 0.25rem 0;
  text-shadow: var(--glow);
}

.result-sub,
.result-best {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0.25rem 0 0.85rem;
}

.hud {
  position: absolute;
  top: calc(12px + var(--safe-top));
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0 16px;
  z-index: 5;
  pointer-events: none;
}

.hud.hidden {
  display: none;
}

.hud-score,
.hud-dist {
  padding: 0.45rem 0.85rem;
  background: rgba(11, 15, 20, 0.7);
  border: 1px solid rgba(79, 195, 247, 0.2);
  border-radius: 12px;
  backdrop-filter: blur(4px);
}

.hud-label {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

#score {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--accent-bright);
  line-height: 1.1;
}

#distance {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.hud-unit {
  font-size: 0.8rem;
  color: var(--muted);
  margin-left: 2px;
}

.new-record {
  margin: 0.35rem 0 0.75rem;
  color: #7df9ff;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-shadow: 0 0 12px rgba(125, 249, 255, 0.55);
}
.new-record.hidden { display: none; }
#score.bump {
  animation: scoreBump 0.28s ease-out;
}
@keyframes scoreBump {
  0% { transform: scale(1); }
  40% { transform: scale(1.22); color: #7df9ff; }
  100% { transform: scale(1); }
}


.hud-combo {
  position: absolute;
  top: calc(18px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(79, 195, 247, 0.18);
  border: 1px solid rgba(125, 249, 255, 0.45);
  color: var(--accent-bright);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  box-shadow: var(--glow);
  pointer-events: none;
}
.hud-combo.hidden { display: none; }

#float-host {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  overflow: hidden;
}
.float-pts {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, 8px);
  opacity: 0;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--accent-bright);
  text-shadow: 0 0 12px rgba(79, 195, 247, 0.7);
  transition: transform 650ms ease-out, opacity 650ms ease-out;
}
.float-pts.go {
  opacity: 1;
  transform: translate(-50%, -48px);
}
.float-pts.float-combo { color: #ffe082; font-size: 1.35rem; }
.float-pts.float-near { color: #9effc3; font-size: 1.05rem; }

/* v0.2.2 — pause overlay + polish feedback */
#pause-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 12, 18, 0.78);
  backdrop-filter: blur(4px);
  z-index: 12;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
#pause-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
#pause-overlay .pause-panel {
  text-align: center;
  padding: 1.5rem 2rem;
  border-radius: 16px;
  border: 1px solid rgba(79, 195, 247, 0.35);
  background: rgba(11, 15, 20, 0.95);
  box-shadow: var(--glow);
}
#pause-overlay h2 {
  font-size: 1.5rem;
  color: var(--accent-bright);
  margin-bottom: 0.5rem;
  letter-spacing: 0.06em;
}
#pause-overlay p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
#screen-pulse {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(125, 249, 255, 0.22), transparent 65%);
  opacity: 0;
  pointer-events: none;
  z-index: 3;
}
#screen-pulse.pulse {
  animation: softPulse 380ms ease-out forwards;
}
@keyframes softPulse {
  0% { opacity: 0.9; }
  100% { opacity: 0; }
}
.float-pts.float-perfect {
  color: #b8fff0;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
}


/* v0.2.3 — run stats + milestone float */
.run-stats {
  margin: 0.35rem 0 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: 0.02em;
  line-height: 1.35;
}
.run-stats.hidden { display: none; }
.float-pts.float-mile {
  color: #ffe082;
  font-size: 1.25rem;
  letter-spacing: 0.03em;
  text-shadow: 0 0 14px rgba(255, 224, 130, 0.65);
}


/* v0.2.4 — speed tier chip + turbo vignette + streak / uy floats */
.hud-speed {
  position: absolute;
  top: calc(52px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background: rgba(11, 15, 20, 0.72);
  border: 1px solid rgba(125, 249, 255, 0.55);
  box-shadow: 0 0 10px rgba(79, 195, 247, 0.25);
  pointer-events: none;
}
.hud-speed[data-tier="mid"] {
  border-color: rgba(125, 249, 255, 0.75);
  color: #b8fff0;
}
.hud-speed[data-tier="turbo"] {
  border-color: #7df9ff;
  color: #fff;
  box-shadow: 0 0 20px rgba(125, 249, 255, 0.75), 0 0 36px rgba(79, 195, 247, 0.35);
  animation: turboPulse 0.7s ease-in-out infinite alternate;
}
.hud-speed.hidden { display: none; }
@keyframes turboPulse {
  from { box-shadow: 0 0 10px rgba(125, 249, 255, 0.35); }
  to { box-shadow: 0 0 22px rgba(125, 249, 255, 0.75); }
}
#app.turbo-glow::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  box-shadow: inset 0 0 90px rgba(125, 249, 255, 0.38), inset 0 0 160px rgba(79, 195, 247, 0.22), inset 0 0 28px rgba(125, 249, 255, 0.18);
  animation: turboVignette 0.85s ease-in-out infinite alternate;
}
@keyframes turboVignette {
  from { opacity: 0.7; }
  to { opacity: 1; }
}
/* v0.2.5 — soft-land + best-approach cue */
.float-pts.float-soft {
  color: #a8fff0;
  font-size: 1.12rem;
  letter-spacing: 0.04em;
  text-shadow: 0 0 14px rgba(125, 249, 255, 0.65);
}
.float-pts.float-near-record {
  color: #ffc857;
  font-size: 1.22rem;
  letter-spacing: 0.05em;
  text-shadow: 0 0 16px rgba(255, 200, 87, 0.75);
  font-weight: 700;
}
.float-pts.float-streak {
  color: #9effc3;
  font-size: 1.28rem;
  letter-spacing: 0.03em;
  text-shadow: 0 0 16px rgba(158, 255, 195, 0.7);
}
.float-pts.float-uy {
  color: #ffd28a;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}
.retry-hint {
  margin: 0.25rem 0 0.65rem;
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}


/* v0.2.6 — combo×10, km milestones, pause stats, crash canvas shake */
.float-pts.float-combo-ten {
  color: #ffe082;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-shadow: 0 0 18px rgba(255, 224, 130, 0.85), 0 0 32px rgba(125, 249, 255, 0.45);
}
.float-pts.float-km {
  color: #7df9ff;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-shadow: 0 0 20px rgba(125, 249, 255, 0.9), 0 0 36px rgba(79, 195, 247, 0.55);
}
#screen-pulse.pulse-strong {
  animation: strongPulse 520ms ease-out forwards;
  background: radial-gradient(ellipse at center, rgba(255, 224, 130, 0.28), rgba(125, 249, 255, 0.18), transparent 70%);
}
@keyframes strongPulse {
  0% { opacity: 1; }
  100% { opacity: 0; }
}
.pause-stats {
  color: var(--accent-bright) !important;
  font-size: 0.95rem !important;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 0.55rem !important;
}
.pause-stats.hidden { display: none; }
#app.crash-shake {
  animation: crashShake 380ms ease-out;
}
@keyframes crashShake {
  0% { transform: translate(0, 0); }
  15% { transform: translate(-3px, 2px); }
  30% { transform: translate(3px, -2px); }
  45% { transform: translate(-2px, -1px); }
  60% { transform: translate(2px, 2px); }
  75% { transform: translate(-1px, 1px); }
  100% { transform: translate(0, 0); }
}