/* =========================================================
   Hotel Zumbi Universe — Zombie Kart CSS
   Path: /css/games/zombie-kart.css
   V6 — Audio Ready / Tilt / Particles / Speed FX / Neon Hero Kart
   ========================================================= */

.kart-screen {
  min-height: 100dvh;
  color: #eafff8;
  background:
    radial-gradient(circle at top left, rgba(0, 255, 170, 0.12), transparent 34%),
    radial-gradient(circle at top right, rgba(90, 0, 255, 0.16), transparent 38%),
    linear-gradient(180deg, #071014 0%, #020509 100%);
  overflow: hidden;
}

.kart-screen--intro,
.kart-screen--result {
  display: grid;
  place-items: center;
  padding: 18px;
}

.kart-hero,
.kart-result-card {
  width: min(760px, 100%);
  padding: 22px;
  border-radius: 26px;
  border: 1px solid rgba(0, 255, 170, 0.22);
  background: linear-gradient(180deg, rgba(8, 24, 28, 0.94), rgba(3, 8, 12, 0.98));
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.55);
}

.kart-hero h1,
.kart-result-card h1 {
  margin: 6px 0;
  font-size: clamp(2rem, 7vw, 4rem);
  line-height: 0.95;
}

.kart-hero p,
.kart-result-card p {
  color: rgba(234, 255, 248, 0.76);
}

.kart-summary,
.kart-result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.kart-summary div,
.kart-result-grid div {
  padding: 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(0, 255, 170, 0.14);
}

.kart-actions,
.kart-result-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.kart-actions button,
.kart-result-actions button {
  flex: 1;
  min-width: 160px;
}

/* =========================
   Stage
   ========================= */

.kart-assault {
  --road-offset: 0px;
  --kart-shake: 0px;
  --kart-curve: 0px;
  --kart-speed: 0;

  position: relative;
  height: 100dvh;
  min-height: 520px;
  overflow: hidden;
  transform: translate(var(--kart-shake), 0);
  background:
    radial-gradient(circle at 50% 15%, rgba(0, 255, 210, 0.1), transparent 26%),
    linear-gradient(180deg, rgba(2, 8, 12, 0.35), rgba(1, 4, 8, 0.92));
}

.kart-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 12, 18, 0.45), rgba(1, 4, 8, 0.96)),
    url('/assets/img/backgrounds/city-ruins.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.62;
  filter: saturate(1.08) contrast(1.08);
}

.kart-road {
  position: absolute;
  top: -12%;
  left: 50%;
  bottom: -12%;
  width: min(700px, 94vw);
  transform: translateX(calc(-50% + var(--kart-curve)));
  overflow: hidden;
  background:
    linear-gradient(90deg,
      transparent 0 2%,
      rgba(0, 255, 170, 0.2) 2% 3%,
      transparent 3% 17%,
      rgba(255,255,255,0.035) 17% 18%,
      transparent 18% 33%,
      rgba(255,255,255,0.035) 33% 34%,
      transparent 34% 49%,
      rgba(255,255,255,0.05) 49% 51%,
      transparent 51% 66%,
      rgba(255,255,255,0.035) 66% 67%,
      transparent 67% 82%,
      rgba(255,255,255,0.035) 82% 83%,
      transparent 83% 97%,
      rgba(0, 255, 170, 0.2) 97% 98%,
      transparent 98% 100%),
    linear-gradient(180deg, rgba(18, 22, 24, 0.96), rgba(5, 7, 10, 0.98));
  border-left: 1px solid rgba(0, 255, 170, 0.14);
  border-right: 1px solid rgba(0, 255, 170, 0.14);
  box-shadow:
    0 0 90px rgba(0, 255, 170, 0.08),
    inset 0 0 120px rgba(0, 0, 0, 0.82);
}

.kart-road::before,
.kart-road::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.kart-road::before {
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 10px,
      rgba(255, 255, 255, 0.16) 10px 18px,
      transparent 18px 52px
    );
  background-size: 100% 52px;
  animation: kartRoadSpeedLines 0.42s linear infinite;
  opacity: 0.34;
  mix-blend-mode: screen;
  mask-image: linear-gradient(90deg, transparent 0 8%, #000 14% 86%, transparent 92% 100%);
}

.kart-road::after {
  background:
    radial-gradient(circle at 18% 15%, rgba(0,255,170,.34) 0 2px, transparent 4px),
    radial-gradient(circle at 62% 42%, rgba(0,200,255,.24) 0 2px, transparent 5px),
    radial-gradient(circle at 82% 72%, rgba(180,0,255,.24) 0 2px, transparent 5px),
    radial-gradient(circle at 35% 88%, rgba(255,120,0,.24) 0 2px, transparent 5px);
  background-size: 100% 260px;
  animation: kartRoadParticles 0.9s linear infinite;
  opacity: 0.42;
}

.kart-road-lines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 12px,
      rgba(255,255,255,.24) 12px 28px,
      transparent 28px 72px
    );
  background-size: 100% 72px;
  background-position-y: var(--road-offset);
  opacity: 0.42;
  mask-image:
    linear-gradient(
      90deg,
      transparent 0 14%,
      #000 15% 16%,
      transparent 17% 30%,
      #000 31% 32%,
      transparent 33% 47%,
      #000 48% 52%,
      transparent 53% 68%,
      #000 69% 70%,
      transparent 71% 84%,
      #000 85% 86%,
      transparent 87% 100%
    );
}

.kart-road-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 78%, rgba(0,255,170,.28), transparent 22%),
    radial-gradient(ellipse at 50% 96%, rgba(255,90,0,.18), transparent 36%),
    linear-gradient(180deg, transparent, rgba(0,0,0,.54));
  pointer-events: none;
}

@keyframes kartRoadSpeedLines {
  from { background-position-y: 0; }
  to { background-position-y: 104px; }
}

@keyframes kartRoadParticles {
  from { background-position-y: 0; }
  to { background-position-y: 260px; }
}

/* =========================
   HUD
   ========================= */

.kart-hud {
  position: absolute;
  top: 40px;
  left: 10px;
  right: 10px;
  z-index: 40;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
}

.kart-hud div {
  min-height: 46px;
  padding: 7px 9px;
  border-radius: 14px;
  background: rgba(2, 8, 12, 0.78);
  border: 1px solid rgba(0, 255, 170, 0.2);
  backdrop-filter: blur(8px);
}

.kart-hud small,
.kart-bar small {
  display: block;
  color: rgba(234, 255, 248, 0.58);
  font-size: 0.62rem;
  text-transform: uppercase;
  font-weight: 900;
}

.kart-hud strong {
  display: block;
  margin-top: 3px;
  color: #fff;
  font-size: 0.88rem;
}

.kart-hud small::before {
  margin-right: 4px;
}

.kart-hud div:nth-child(1) small::before { content: "⏱"; }
.kart-hud div:nth-child(2) small::before { content: "⚡"; }
.kart-hud div:nth-child(3) small::before { content: "💀"; }
.kart-hud div:nth-child(4) small::before { content: "⬆"; }
.kart-hud div:nth-child(5) small::before { content: "🌊"; }
.kart-hud div:nth-child(6) small::before { content: "🔥"; }

/* =========================
   Bars
   ========================= */

.kart-bars {
  position: absolute;
  inset: 0;
  z-index: 42;
  pointer-events: none;
}

.kart-bar {
  position: absolute;
  width: 38px;
  height: 260px;
  padding: 8px 6px;
  border-radius: 18px;
  background: rgba(2, 8, 12, 0.76);
  border: 1px solid rgba(0, 255, 170, 0.2);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.kart-bar small {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  margin: 0 auto 8px;
  letter-spacing: 0.08em;
}

.kart-bar span {
  display: block;
  width: 9px;
  height: 180px;
  margin: 0 auto;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

.kart-bar i {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  transform-origin: bottom;
  transform: scaleY(var(--bar-fill, 1));
  transition: transform 0.15s ease, width 0.15s ease;
  background: linear-gradient(180deg, #00c8ff, #00ff9d);
}

.kart-bars .kart-bar:nth-child(1) {
  left: 8px;
  bottom: 286px;
  height: 160px;
  width: 32px;
}

.kart-bars .kart-bar:nth-child(2) {
  right: 18px;
  bottom: 148px;
  width: 86px;
  height: 30px;
  padding: 5px 8px;
  border-radius: 999px;
  display: block;
}

.kart-bars .kart-bar:nth-child(2) small {
  display: none;
}

.kart-bars .kart-bar:nth-child(2)::before {
  content: "⌛";
  position: absolute;
  left: -26px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
}

.kart-bars .kart-bar:nth-child(2) span {
  width: 100%;
  height: 8px;
  margin: 6px 0 0;
}

.kart-bars .kart-bar:nth-child(2) i {
  transform: none;
  width: calc(var(--bar-fill, 1) * 100%);
  height: 100%;
  background: linear-gradient(90deg, #ffde59, #00ff9d, #00c8ff);
}

.kart-bar--xp {
  left: 50%;
  top: 154px;
  bottom: auto;
  width: min(300px, calc(100vw - 140px));
  height: 24px;
  transform: translateX(-50%);
  padding: 5px 10px;
  border-radius: 999px;
  display: block;
}

.kart-bar--xp small {
  display: none;
}

.kart-bar--xp span {
  width: 100%;
  height: 7px;
  margin: 0;
}

.kart-bar--xp i {
  transform: none;
  width: 0;
  background: linear-gradient(90deg, #ffde59, #00ff9d);
}

/* =========================
   Layers
   ========================= */

.kart-objects,
.kart-effects,
.kart-bullets,
.kart-enemy-bullets,
.kart-skill-effects,
.kart-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.kart-objects { z-index: 12; }
.kart-bullets { z-index: 18; }
.kart-enemy-bullets { z-index: 19; }
.kart-skill-effects { z-index: 25; }
.kart-particles { z-index: 27; }
.kart-effects { z-index: 28; }

/* =========================
   Player
   ========================= */

.kart-player,
.kart-player-fallback {
  position: absolute;
  z-index: 30;
  left: 50%;
  bottom: 145px;
  width: clamp(170px, 18vw, 230px);
  height: clamp(170px, 18vw, 230px);
  object-fit: contain;
  transform: translateX(-50%) rotate(var(--kart-lean, 0deg)) scale(1.05);
  transition:
    left 0.1s linear,
    transform 0.08s linear,
    filter 0.2s ease;
  filter:
    drop-shadow(0 20px 22px rgba(0,0,0,.85))
    drop-shadow(0 0 20px rgba(255,120,0,.55))
    drop-shadow(0 0 45px rgba(255,80,0,.30))
    drop-shadow(0 0 65px rgba(140,0,255,.25));
}

.kart-player.is-moving-fast {
  transform: translateX(-50%) rotate(var(--kart-lean, 0deg)) scale(1.1);
  filter:
    drop-shadow(0 20px 22px rgba(0,0,0,.85))
    drop-shadow(0 0 28px rgba(255,150,0,.65))
    drop-shadow(0 0 62px rgba(255,80,0,.42))
    drop-shadow(0 0 90px rgba(140,0,255,.34));
}

.kart-player.is-hit {
  opacity: 0.72;
  animation: kartHitBlink 0.22s linear infinite;
}

.kart-player.is-shielded {
  filter:
    drop-shadow(0 18px 18px rgba(0, 0, 0, 0.75))
    drop-shadow(0 0 34px rgba(0, 200, 255, 0.9))
    drop-shadow(0 0 60px rgba(0, 255, 170, 0.42));
}

.kart-player-fallback {
  display: grid;
  place-items: center;
  font-size: 4rem;
}

@keyframes kartHitBlink {
  0%, 100% { filter: drop-shadow(0 0 24px rgba(255, 90, 90, 0.95)); }
  50% { filter: drop-shadow(0 0 6px rgba(255, 90, 90, 0.25)); }
}

/* =========================
   Entities
   ========================= */

.kart-zombie,
.kart-drop,
.kart-obstacle,
.kart-effect,
.kart-bullet,
.kart-enemy-bullet,
.kart-skill-effect,
.kart-particle {
  position: absolute;
  transform: translate(-50%, -50%);
}

.kart-zombie {
  width: clamp(26px, 3.7vw, 50px);
  height: clamp(26px, 3.7vw, 50px);
  object-fit: contain;
  z-index: 12;
  filter: drop-shadow(0 10px 10px rgba(0, 0, 0, 0.65));
}

.kart-zombie--mini {
  width: clamp(44px, 5.4vw, 74px);
  height: clamp(44px, 5.4vw, 74px);
  filter:
    drop-shadow(0 12px 14px rgba(0, 0, 0, 0.75))
    drop-shadow(0 0 18px rgba(255, 190, 60, 0.36));
}

.kart-zombie--boss {
  width: clamp(78px, 9vw, 128px);
  height: clamp(78px, 9vw, 128px);
  filter:
    drop-shadow(0 16px 18px rgba(0, 0, 0, 0.8))
    drop-shadow(0 0 24px rgba(255, 70, 70, 0.5));
}

.kart-zombie--fallback {
  display: grid;
  place-items: center;
  color: #78ff5d;
  font-size: 1.65rem;
  text-shadow: 0 0 18px rgba(120, 255, 93, 0.6);
}

.kart-zombie--fallback.kart-zombie--mini {
  color: #ffdf68;
  font-size: 2.4rem;
}

.kart-zombie--fallback.kart-zombie--boss {
  color: #ff6666;
  font-size: 3.5rem;
}

.kart-obstacle {
  z-index: 13;
  width: clamp(34px, 4.2vw, 60px);
  height: clamp(34px, 4.2vw, 60px);
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 35%, #ffcf6b, transparent 22%),
    linear-gradient(135deg, #b03422, #31120c);
  border: 1px solid rgba(255, 180, 80, 0.34);
  box-shadow:
    0 0 20px rgba(255, 80, 40, 0.24),
    inset 0 0 18px rgba(0, 0, 0, 0.45);
}

.kart-obstacle.is-destructible {
  outline: 1px solid rgba(0, 255, 170, 0.26);
}

.kart-drop {
  z-index: 14;
  width: clamp(28px, 4vw, 44px);
  height: clamp(28px, 4vw, 44px);
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(0, 255, 170, 0.38));
}

.kart-drop--fallback {
  display: grid;
  place-items: center;
  font-size: 1.45rem;
}

/* =========================
   Bullets / Particles
   ========================= */

.kart-bullet {
  z-index: 18;
  width: 7px;
  height: 22px;
  border-radius: 999px;
  background: linear-gradient(180deg, #ffffff, #00ff9d);
  box-shadow:
    0 0 10px rgba(0, 255, 170, 0.9),
    0 0 22px rgba(0, 200, 255, 0.45);
}

.kart-enemy-bullet {
  z-index: 19;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #9cff4f;
  box-shadow:
    0 0 12px rgba(156, 255, 79, 0.9),
    0 0 24px rgba(0, 255, 120, 0.45);
}

.kart-enemy-bullet--acid {
  width: 14px;
  height: 14px;
  background: #ff6b4a;
  box-shadow:
    0 0 14px rgba(255, 107, 74, 0.9),
    0 0 30px rgba(255, 60, 30, 0.5);
}

.kart-particle {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  pointer-events: none;
}

.kart-particle--muzzle {
  background: #fff7a8;
  box-shadow:
    0 0 10px rgba(255,255,255,.9),
    0 0 22px rgba(255,170,0,.75),
    0 0 34px rgba(0,255,170,.42);
  animation: kartMuzzleFlash 0.18s ease forwards;
}

.kart-particle--spark {
  background: #ffb342;
  box-shadow:
    0 0 10px rgba(255,180,66,.9),
    0 0 28px rgba(255,70,30,.55);
  animation: kartSparkPop 0.5s ease forwards;
}

@keyframes kartMuzzleFlash {
  from { opacity: 1; transform: translate(-50%, -50%) scale(0.6); }
  to { opacity: 0; transform: translate(-50%, -120%) scale(2.2); }
}

@keyframes kartSparkPop {
  from { opacity: 1; transform: translate(-50%, -50%) scale(0.8); }
  to { opacity: 0; transform: translate(-50%, -92%) scale(2.4); }
}

/* =========================
   Skill Effects
   ========================= */

.kart-skill-effect {
  z-index: 25;
  pointer-events: none;
}

.kart-skill-effect--shield {
  width: 132px;
  height: 132px;
  border-radius: 999px;
  border: 2px solid rgba(0, 255, 210, 0.7);
  box-shadow:
    0 0 28px rgba(0, 255, 210, 0.6),
    inset 0 0 34px rgba(0, 200, 255, 0.28);
  animation: kartShieldPulse 0.7s ease-in-out infinite alternate;
}

.kart-skill-effect--bomb {
  width: 220px;
  height: 220px;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(255, 245, 120, 0.8), rgba(255, 82, 36, 0.35) 34%, transparent 68%);
  box-shadow: 0 0 70px rgba(255, 96, 40, 0.5);
  animation: kartBombPop 0.8s ease forwards;
}

.kart-skill-effect--drone,
.kart-skill-effect--drone-start {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 2px solid rgba(0, 255, 170, 0.7);
  background: radial-gradient(circle, rgba(255,255,255,0.9), rgba(0,255,170,0.45), transparent 70%);
  box-shadow: 0 0 28px rgba(0, 255, 170, 0.6);
  animation: kartDronePing 0.35s ease forwards;
}

.kart-skill-effect--plasma {
  width: 132px;
  height: 360px;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(0, 255, 220, 0), rgba(0, 255, 220, 0.42), rgba(0, 200, 255, 0));
  box-shadow: 0 0 42px rgba(0, 255, 220, 0.42);
  animation: kartPlasmaBeam 0.45s ease forwards;
}

@keyframes kartShieldPulse {
  from { transform: translate(-50%, -50%) scale(0.92); opacity: 0.65; }
  to { transform: translate(-50%, -50%) scale(1.08); opacity: 1; }
}

@keyframes kartBombPop {
  from { transform: translate(-50%, -50%) scale(0.35); opacity: 0.95; }
  to { transform: translate(-50%, -50%) scale(1.4); opacity: 0; }
}

@keyframes kartDronePing {
  from { transform: translate(-50%, -50%) scale(0.7); opacity: 1; }
  to { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

@keyframes kartPlasmaBeam {
  from { opacity: 0; transform: translate(-50%, -50%) scaleY(0.6); }
  45% { opacity: 1; }
  to { opacity: 0; transform: translate(-50%, -50%) scaleY(1.1); }
}

/* =========================
   Floating Text
   ========================= */

.kart-effect {
  z-index: 28;
  color: #fff;
  font-weight: 1000;
  font-size: 0.78rem;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.8);
  animation: kartEffectFloat 0.65s ease forwards;
}

.kart-effect--damage { color: #ff6262; }
.kart-effect--shield { color: #66f7ff; }
.kart-effect--fuel,
.kart-effect--coin,
.kart-effect--scrap,
.kart-effect--kill,
.kart-effect--hit { color: #66ffd8; }

.kart-effect--boss,
.kart-effect--warning {
  color: #ffdf68;
  font-size: 1.15rem;
}

@keyframes kartEffectFloat {
  from { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  to { opacity: 0; transform: translate(-50%, -92%) scale(1.16); }
}

/* =========================
   Countdown / Upgrade / Pause
   ========================= */

.kart-countdown {
  position: absolute;
  inset: 0;
  z-index: 58;
  display: grid;
  place-items: center;
  color: #eafff8;
  font-size: clamp(4rem, 18vw, 10rem);
  font-weight: 1000;
  text-shadow:
    0 0 18px rgba(0, 255, 170, 0.9),
    0 0 50px rgba(0, 200, 255, 0.5);
  pointer-events: none;
  animation: kartCountdownPulse 0.5s ease infinite alternate;
}

.kart-countdown[hidden],
.kart-upgrade-modal[hidden],
.kart-pause-modal[hidden] {
  display: none;
}

@keyframes kartCountdownPulse {
  from { transform: scale(0.92); opacity: 0.75; }
  to { transform: scale(1.04); opacity: 1; }
}

.kart-upgrade-modal {
  position: absolute;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.68);
  backdrop-filter: blur(8px);
}

.kart-upgrade-card {
  width: min(720px, 100%);
  padding: 18px;
  border-radius: 24px;
  border: 1px solid rgba(0, 255, 170, 0.28);
  background:
    radial-gradient(circle at top, rgba(0, 255, 170, 0.13), transparent 40%),
    linear-gradient(180deg, #071416, #020608);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.72);
}

.kart-upgrade-card h2 {
  margin: 4px 0 16px;
  font-size: clamp(1.6rem, 5vw, 2.6rem);
}

.kart-upgrade-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 11px;
}

.kart-upgrade-grid button {
  min-height: 138px;
  padding: 14px;
  border: 1px solid rgba(0, 255, 170, 0.22);
  border-radius: 18px;
  text-align: left;
  color: #031014;
  background: linear-gradient(135deg, #00ff9d, #00c8ff);
  cursor: pointer;
  box-shadow: 0 12px 28px rgba(0, 255, 170, 0.22);
}

.kart-upgrade-grid strong,
.kart-upgrade-grid span {
  display: block;
}

.kart-upgrade-grid span {
  margin-top: 8px;
  color: rgba(3, 16, 20, 0.78);
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1.35;
}

.kart-pause-modal {
  position: absolute;
  inset: 0;
  z-index: 59;
  display: grid;
  place-items: center;
  color: #eafff8;
  font-size: clamp(2.2rem, 9vw, 6rem);
  font-weight: 1000;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(5px);
  text-shadow: 0 0 28px rgba(0, 255, 170, 0.8);
}

/* =========================
   Controls / Skills
   ========================= */

.kart-mobile-pad {
  position: absolute;
  left: 18px;
  bottom: 22px;
  z-index: 45;
  width: 112px;
  height: 112px;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(0, 255, 170, 0.16), rgba(0, 0, 0, 0.42));
  border: 1px solid rgba(0, 255, 170, 0.2);
  box-shadow: 0 0 34px rgba(0, 255, 170, 0.12);
}

.kart-mobile-pad button {
  position: absolute;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(0, 255, 170, 0.28);
  border-radius: 14px;
  color: #031014;
  background: linear-gradient(135deg, #00ff9d, #00c8ff);
  font-weight: 1000;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(0, 255, 170, 0.18);
}

.kart-mobile-pad [data-kart-up] { top: 5px; left: 37px; }
.kart-mobile-pad [data-kart-left] { top: 37px; left: 5px; }
.kart-mobile-pad [data-kart-right] { top: 37px; right: 5px; }
.kart-mobile-pad [data-kart-down] { bottom: 5px; left: 37px; }

.kart-skills {
  position: absolute;
  right: 18px;
  bottom: 24px;
  z-index: 45;
  display: grid;
  grid-template-columns: repeat(2, 50px);
  gap: 9px;
}

.kart-skill {
  position: relative;
  width: 50px;
  height: 50px;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(0, 255, 170, 0.26);
  color: #031014;
  background: linear-gradient(135deg, #00ff9d, #00c8ff);
  font-size: 1.35rem;
  font-weight: 1000;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0, 255, 170, 0.2);
}

.kart-skill span {
  position: relative;
  z-index: 2;
}

.kart-skill i {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 0%;
  z-index: 1;
  background: rgba(0, 0, 0, 0.52);
  pointer-events: none;
}

.kart-skill:not(.is-ready) {
  filter: grayscale(0.55);
  opacity: 0.7;
}

.kart-skill.is-ready {
  animation: kartSkillReady 0.8s ease-in-out infinite alternate;
}

@keyframes kartSkillReady {
  from { box-shadow: 0 0 12px rgba(0, 255, 170, 0.25); }
  to { box-shadow: 0 0 30px rgba(0, 255, 170, 0.72); }
}

.kart-pause,
.kart-exit {
  position: absolute;
  top: 154px;
  z-index: 46;
  width: 38px;
  height: 38px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 255, 170, 0.22);
  border-radius: 999px;
  background: rgba(2, 8, 12, 0.82);
  color: #eafff8;
  font-weight: 1000;
  font-size: 1rem;
  cursor: pointer;
}

.kart-pause { right: 56px; }
.kart-exit { right: 12px; }

.kart-boost-btn,
.kart-controls {
  display: none;
}

/* =========================
   Toast
   ========================= */

.kart-screen ~ .toast,
.kart-screen .toast,
.toast,
.hz-toast,
.game-toast {
  position: fixed !important;
  top: 0 !important;
  left: 50% !important;
  bottom: auto !important;
  transform: translateX(-50%) !important;
  z-index: 9999 !important;
  width: min(720px, 100vw) !important;
  min-width: 0 !important;
  max-width: 100vw !important;
  height: 34px !important;
  padding: 6px 14px !important;
  border-radius: 0 0 18px 18px !important;
  color: #04110e !important;
  background: linear-gradient(135deg, rgba(0,255,157,.95), rgba(0,200,255,.95)) !important;
  border: 2px solid rgba(255, 255, 255, 0.35) !important;
  font-size: 0.72rem !important;
  line-height: 1 !important;
  font-weight: 1000 !important;
  text-align: center !important;
  letter-spacing: 0.03em !important;
  box-shadow: 0 0 22px rgba(0,255,170,.28) !important;
  pointer-events: none !important;
  animation: kartToastPop 0.22s ease-out both !important;
}

@keyframes kartToastPop {
  from { opacity: 0; transform: translateX(-50%) translateY(-10px) scale(0.92); }
  to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}

/* =========================
   Mobile
   ========================= */

@media (max-width: 720px) {
  .kart-assault {
    height: 100dvh;
    min-height: 100dvh;
  }

  .kart-road {
    width: 97vw;
  }

  .kart-hud {
    top: 42px;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .kart-hud div {
    min-height: 38px;
    padding: 6px 7px;
    border-radius: 13px;
  }

  .kart-hud small,
  .kart-bar small {
    font-size: 0.56rem;
  }

  .kart-hud strong {
    font-size: 0.78rem;
  }

  .kart-bar--xp {
    top: 166px;
  }

  .kart-bars .kart-bar:nth-child(1) {
    bottom: 276px;
  }

  .kart-bars .kart-bar:nth-child(2) {
    bottom: 150px;
  }

  .kart-player,
  .kart-player-fallback {
    width: 148px;
    height: 148px;
    bottom: 145px;
  }

  .kart-pause,
  .kart-exit {
    top: 202px;
  }

  .kart-summary,
  .kart-result-grid,
  .kart-upgrade-grid {
    grid-template-columns: 1fr;
  }

  .kart-hero,
  .kart-result-card {
    padding: 18px;
  }

  .kart-upgrade-grid button {
    min-height: 100px;
  }
}