@font-face {
  font-family: "Exo 2";
  src: url("/fonts/Exo2/Exo2-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Exo 2";
  src: url("/fonts/Exo2/Exo2-ExtraBold.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Exo 2";
  src: url("/fonts/Exo2/Exo2-Black.woff2") format("woff2");
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --neon-blue: #00f3ff;
  --neon-pink: #ff00ff;
  --neon-green: #39ff14;
  --neon-yellow: #ffcd40;
  --bg-dark: #050505;
  --bg-card: rgba(20, 20, 20, 0.8);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background-color: var(--bg-dark);
  color: white;
  overflow: hidden;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
}

body.mobile-mode.start-screen-active {
  overflow: auto;
}

#game-container {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
}

canvas {
  display: block;
  background: radial-gradient(circle at center, #1a1a1a 0%, #050505 100%);
  box-shadow: 0 0 50px rgba(0, 243, 255, 0.1);
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--neon-blue);
  padding: 2rem;
  border-radius: 1rem;
  text-align: center;
  pointer-events: all;
  box-shadow: 0 0 30px rgba(0, 243, 255, 0.2);
  z-index: 100;
  display: none;
  max-height: 95vh;
  width: 90vw;
  max-width: 500px;
  overflow-y: auto;
}

.modal-subtitle {
  margin-top: 0.5rem;
}

.error-modal {
  border-color: rgba(0, 243, 255, 0.9);
  overflow: hidden;
  animation: error-modal-pulse 2.2s ease-in-out infinite;
}

.error-modal::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      180deg,
      transparent 0%,
      rgba(0, 243, 255, 0.13) 48%,
      transparent 52%
    );
  transform: translateY(-115%);
  animation: error-scanline 2.6s linear infinite;
}

.error-modal::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03) 0,
      rgba(255, 255, 255, 0.03) 1px,
      transparent 1px,
      transparent 7px
    );
  opacity: 0.42;
}

.error-code {
  color: rgba(255, 255, 255, 0.55);
  font-family: "Courier New", Courier, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  margin-bottom: 0.45rem;
  text-transform: uppercase;
  animation: error-code-blink 1.1s steps(2, end) infinite;
}

.error-callout {
  margin: 1.25rem 0 0;
  padding: 1rem;
  border: 1px solid rgba(255, 0, 255, 0.5);
  border-radius: 0.65rem;
  background: rgba(255, 0, 255, 0.06);
  box-shadow: inset 0 0 18px rgba(255, 0, 255, 0.08);
  animation: error-callout-thump 2.2s ease-in-out infinite;
}

.error-callout strong {
  color: var(--neon-pink);
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.error-callout p {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.45;
  margin-top: 0.55rem;
}

@keyframes error-modal-pulse {
  0%, 100% {
    box-shadow:
      0 0 30px rgba(0, 243, 255, 0.2),
      0 0 0 1px rgba(0, 243, 255, 0.08);
  }

  50% {
    box-shadow:
      0 0 42px rgba(0, 243, 255, 0.38),
      0 0 0 2px rgba(255, 0, 255, 0.22);
  }
}

@keyframes error-scanline {
  0% {
    transform: translateY(-115%);
  }

  100% {
    transform: translateY(115%);
  }
}

@keyframes error-code-blink {
  0%, 68% {
    color: rgba(255, 255, 255, 0.58);
    text-shadow: none;
  }

  69%, 100% {
    color: var(--neon-pink);
    text-shadow:
      0 0 10px rgba(255, 0, 255, 0.72),
      0 0 22px rgba(255, 0, 255, 0.34);
  }
}

@keyframes error-callout-thump {
  0%, 100% {
    border-color: rgba(255, 0, 255, 0.45);
    box-shadow: inset 0 0 18px rgba(255, 0, 255, 0.08);
    transform: scale(1);
  }

  46% {
    transform: scale(1);
  }

  50% {
    border-color: rgba(255, 0, 255, 0.86);
    box-shadow:
      inset 0 0 22px rgba(255, 0, 255, 0.14),
      0 0 18px rgba(255, 0, 255, 0.18);
    transform: scale(1.012);
  }

  54% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .error-modal,
  .error-modal::before,
  .error-code,
  .error-callout,
  .home-screen__start {
    animation: none;
  }
}

body.start-screen-active #game-canvas {
  opacity: 0;
  visibility: hidden;
}

.home-screen {
  position: absolute;
  inset: 0;
  z-index: 100;
  display: none;
  pointer-events: all;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background:
    radial-gradient(circle at top, rgba(0, 243, 255, 0.14), transparent 42%),
    linear-gradient(180deg, rgba(3, 8, 14, 0.96), rgba(5, 5, 5, 0.98));
}

.home-screen.active {
  display: block;
}

.home-screen--menu {
  background:
    radial-gradient(circle at top, rgba(0, 243, 255, 0.08), transparent 35%),
    linear-gradient(180deg, rgba(3, 8, 14, 0.98), rgba(5, 5, 5, 0.99));
}

.home-screen__attract {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  transition: opacity 0.55s ease, visibility 0.55s ease;
}

.home-screen--menu .home-screen__attract {
  opacity: 0;
  visibility: hidden;
}

.home-screen__track-layer {
  position: fixed;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.55s ease, visibility 0.55s ease;
}

.home-screen__track-layer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  background:
    radial-gradient(ellipse at 50% 58%, rgba(0, 243, 255, 0.13), transparent 42%),
    repeating-linear-gradient(0deg, transparent 0 52px, rgba(0, 243, 255, 0.12) 52px 54px, transparent 54px 104px),
    repeating-linear-gradient(90deg, transparent 0 74px, rgba(0, 243, 255, 0.095) 74px 76px, transparent 76px 148px);
  filter:
    drop-shadow(0 0 14px rgba(0, 243, 255, 0.16))
    drop-shadow(0 0 20px rgba(0, 243, 255, 0.08));
  mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 88%, transparent 100%);
}

.home-screen--menu .home-screen__track-layer {
  opacity: 1;
  visibility: visible;
}

.home-screen--menu .home-screen__track-layer::before {
  opacity: 0.5;
}

.home-screen__stars {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  opacity: 0;
  mix-blend-mode: screen;
  display: none;
}

.home-screen__stars span {
  position: absolute;
  left: var(--left);
  top: var(--top);
  width: var(--length, clamp(16rem, 34vw, 34rem));
  height: var(--thickness, 7px);
  border-radius: 999px;
  opacity: 0;
  background:
    linear-gradient(
      90deg,
      rgba(var(--rgb), 0) 0%,
      rgba(var(--rgb), 0.08) 22%,
      rgba(var(--rgb), 0.26) 62%,
      rgba(var(--rgb), 0.62) 100%
    );
  box-shadow:
    0 0 18px rgba(var(--rgb), 0.28),
    0 0 38px rgba(var(--rgb), 0.14);
  filter: blur(0.55px);
  transform-origin: center;
  animation: attract-void-streak var(--duration, 18s) linear infinite;
  animation-delay: var(--delay, 0s);
}

.home-screen__stars span:nth-child(1) {
  --left: 8%;
  --top: 17%;
  --rgb: 43, 239, 255;
  --from-x: -70vw;
  --from-y: 0;
  --to-x: 118vw;
  --to-y: 0;
  --rot: 0deg;
  --duration: 18s;
  --delay: -1.3s;
}

.home-screen__stars span:nth-child(2) {
  --left: 68%;
  --top: 30%;
  --rgb: 125, 124, 255;
  --from-x: 80vw;
  --from-y: 0;
  --to-x: -118vw;
  --to-y: 0;
  --rot: 180deg;
  --duration: 21s;
  --delay: -8.4s;
}

.home-screen__stars span:nth-child(3) {
  --left: 24%;
  --top: 8%;
  --rgb: 255, 205, 64;
  --from-x: 0;
  --from-y: -75vh;
  --to-x: 0;
  --to-y: 120vh;
  --rot: 90deg;
  --duration: 19.5s;
  --delay: -5.1s;
}

.home-screen__stars span:nth-child(4) {
  --left: 78%;
  --top: 78%;
  --rgb: 57, 255, 20;
  --from-x: 0;
  --from-y: 85vh;
  --to-x: 0;
  --to-y: -118vh;
  --rot: -90deg;
  --duration: 23s;
  --delay: -9.8s;
  --length: clamp(15rem, 32vw, 32rem);
}

.home-screen__stars span:nth-child(5) {
  --left: 36%;
  --top: 61%;
  --rgb: 255, 49, 49;
  --from-x: -86vw;
  --from-y: 0;
  --to-x: 116vw;
  --to-y: 0;
  --rot: 0deg;
  --duration: 25s;
  --delay: -12.1s;
  --thickness: 6px;
}

.home-screen__stars span:nth-child(6) {
  --left: 12%;
  --top: 82%;
  --rgb: 43, 239, 255;
  --from-x: 94vw;
  --from-y: 0;
  --to-x: -116vw;
  --to-y: 0;
  --rot: 180deg;
  --duration: 20s;
  --delay: -4.4s;
}

.home-screen__stars span:nth-child(7) {
  --left: 50%;
  --top: 36%;
  --rgb: 125, 124, 255;
  --from-x: 0;
  --from-y: -84vh;
  --to-x: 0;
  --to-y: 116vh;
  --rot: 90deg;
  --duration: 26s;
  --delay: -14.2s;
  --length: clamp(18rem, 40vw, 42rem);
}

.home-screen__sun {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 14%;
  width: min(42vw, 24rem);
  aspect-ratio: 1;
  transform: translateX(-50%);
  border-radius: 50%;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 0, 200, 0.92) 0 8px,
      rgba(180, 60, 255, 0.88) 8px 15px,
      rgba(90, 0, 160, 0.82) 15px 20px,
      transparent 20px 28px
    ),
    radial-gradient(
      circle at 50% 45%,
      rgba(255, 120, 255, 0.95) 0%,
      rgba(255, 0, 200, 0.85) 35%,
      rgba(145, 0, 255, 0.75) 68%,
      rgba(60, 0, 110, 0.5) 100%
    );
  box-shadow:
    0 0 24px rgba(255, 0, 200, 0.35),
    0 0 56px rgba(180, 60, 255, 0.3),
    0 0 90px rgba(0, 243, 255, 0.12);
  opacity: 0.44;
  filter: blur(0.2px);
  animation: attract-sun-pulse 16s ease-in-out infinite;
}

.home-screen__sun::before,
.home-screen__sun::after {
  display: none;
}

.home-screen__sun::before {
  left: 13%;
  transform: rotate(-16deg) skewY(-5deg);
}

.home-screen__sun::after {
  right: 13%;
  transform: rotate(16deg) skewY(5deg);
}

.home-screen__road {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: -16%;
  width: min(116vw, 76rem);
  height: 78%;
  transform: translateX(-50%) perspective(30rem) rotateX(62deg);
  transform-origin: bottom center;
  background:
    linear-gradient(90deg, transparent 0 8.5%, rgba(0, 243, 255, 0.88) 10.2%, rgba(0, 243, 255, 0.2) 12.4%, transparent 14.5% 85.5%, rgba(255, 0, 255, 0.2) 87.6%, rgba(255, 0, 255, 0.78) 89.8%, transparent 91.5%),
    repeating-linear-gradient(0deg, transparent 0 54px, rgba(255, 205, 64, 0.34) 54px 64px, transparent 64px 118px),
    radial-gradient(ellipse at 50% 0%, rgba(255, 205, 64, 0.22), transparent 28%),
    linear-gradient(90deg, transparent 0 16%, rgba(7, 11, 16, 0.92) 22% 78%, transparent 84%);
  clip-path: polygon(44.6% 0, 55.4% 0, 100% 100%, 0 100%);
  opacity: 0.86;
  animation: attract-road 1.28s linear infinite;
  filter: drop-shadow(0 0 18px rgba(0, 243, 255, 0.18));
}

.home-screen__road::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 20%, rgba(255, 255, 255, 0.04) 21% 22%, transparent 23% 77%, rgba(255, 255, 255, 0.04) 78% 79%, transparent 80%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 44px);
  clip-path: inherit;
  opacity: 0.62;
  z-index: 0;
}

.home-screen__road span {
  position: absolute;
  z-index: 1;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(0, 243, 255, 0.08), rgba(0, 243, 255, 0.52));
  box-shadow: 0 0 12px rgba(0, 243, 255, 0.24);
}

.home-screen__road span:nth-child(1) { left: 31%; }
.home-screen__road span:nth-child(2) { left: 43%; }
.home-screen__road span:nth-child(3) { right: 43%; }
.home-screen__road span:nth-child(4) { right: 31%; }

.home-screen--menu .home-screen__road {
  left: 50%;
  bottom: -24%;
  width: min(176vw, 122rem);
  height: 102%;
  transform: translateX(-50%) perspective(38rem) rotateX(60deg);
  background:
    linear-gradient(90deg, transparent 0 17%, rgba(0, 243, 255, 0.16) 17.4% 18.1%, transparent 18.6% 71.4%, rgba(255, 0, 255, 0.14) 71.9% 72.6%, transparent 73%),
    linear-gradient(0deg, transparent 0 22%, rgba(0, 243, 255, 0.11) 22.4% 23.1%, transparent 23.6% 63.4%, rgba(255, 0, 255, 0.1) 63.9% 64.6%, transparent 65%),
    repeating-linear-gradient(0deg, transparent 0 58px, rgba(0, 243, 255, 0.07) 58px 60px, transparent 60px 116px),
    repeating-linear-gradient(90deg, transparent 0 78px, rgba(255, 0, 255, 0.045) 78px 80px, transparent 80px 156px),
    radial-gradient(ellipse at 50% 0%, rgba(0, 243, 255, 0.1), transparent 38%),
    linear-gradient(90deg, transparent 0 8%, rgba(3, 8, 18, 0.5) 18% 82%, transparent 92%);
  clip-path: none;
  opacity: 0.12;
  filter:
    drop-shadow(0 0 12px rgba(0, 243, 255, 0.08))
    drop-shadow(0 0 20px rgba(255, 0, 255, 0.06));
}

.home-screen--menu .home-screen__road::before {
  background:
    radial-gradient(ellipse at 50% 55%, rgba(255, 0, 255, 0.08), transparent 36%),
    linear-gradient(90deg, transparent 0 24%, rgba(255, 255, 255, 0.035) 24.5% 25%, transparent 25.5% 75%, rgba(255, 255, 255, 0.03) 75.5% 76%, transparent 76.5%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.012) 0 1px, transparent 1px 52px);
  clip-path: none;
  opacity: 0.52;
}

.home-screen--menu .home-screen__road span {
  background: linear-gradient(180deg, rgba(0, 243, 255, 0.02), rgba(0, 243, 255, 0.24));
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.08);
}

.home-screen__equalizer {
  display: none;
}

.home-screen__equalizer span {
  width: 0.42rem;
  height: 2.4rem;
  background: var(--neon-blue);
  box-shadow: 0 0 14px rgba(0, 243, 255, 0.72);
  animation: attract-eq 16s steps(8, end) infinite;
}

.home-screen__equalizer span:nth-child(2) {
  background: var(--neon-pink);
  animation-delay: -2.2s;
}

.home-screen__equalizer span:nth-child(3) {
  background: var(--neon-yellow);
  animation-delay: -4.1s;
}

.home-screen__equalizer span:nth-child(4) {
  animation-delay: -6.3s;
}

.home-screen__equalizer span:nth-child(5) {
  background: var(--neon-green);
  animation-delay: -8.2s;
}

.home-screen__equalizer span:nth-child(6) {
  background: var(--neon-pink);
  animation-delay: -11.7s;
}

.home-screen__racer {
  position: absolute;
  z-index: 1;
  width: 60px;
  height: 30px;
  color: var(--racer-color, var(--neon-blue));
  background: transparent;
  opacity: 0;
  transform-origin: center;
  animation: none;
}

.home-screen__racer::before,
.home-screen__racer::after {
  display: none;
}

.home-screen__racer-canvas {
  position: fixed;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.home-screen__racer-particles {
  position: fixed;
  inset: 0;
  z-index: 3;
  overflow: hidden;
  pointer-events: none;
  mix-blend-mode: screen;
}

.home-screen__racer-particle {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--particle-size, 0.5rem);
  height: var(--particle-size, 0.5rem);
  border-radius: 999px;
  background: var(--particle-color, currentColor);
  box-shadow: 0 0 10px var(--particle-color, currentColor);
  transform: translate3d(-50%, -50%, 0);
  will-change: transform, opacity;
}

.home-screen__racer--one {
  --racer-color: #00f3ff;
}

.home-screen__racer--two {
  --racer-color: #ff00ff;
}

.home-screen__racer--three {
  --racer-color: #ffcd40;
}

.home-screen__racer--four {
  --racer-color: #39ff14;
}

.home-screen__scanlines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.035) 0,
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px,
      transparent 7px
    );
  opacity: 0.26;
  mix-blend-mode: screen;
}

@keyframes attract-void-streak {
  0% {
    opacity: 0;
    transform: translate3d(var(--from-x), var(--from-y), 0) rotate(var(--rot));
  }

  10% {
    opacity: 0.06;
  }

  24% {
    opacity: 0.3;
  }

  68% {
    opacity: 0.22;
  }

  100% {
    opacity: 0;
    transform: translate3d(var(--to-x), var(--to-y), 0) rotate(var(--rot));
  }
}

@keyframes attract-sun-pulse {
  0%, 100% {
    opacity: 0.28;
    transform: translateX(-50%) scale(0.96);
  }

  50% {
    opacity: 0.48;
    transform: translateX(-50%) scale(1.04);
  }
}

@keyframes attract-road {
  0% {
    background-position: 0 0, 0 0, 0 0;
  }

  100% {
    background-position: 0 0, 0 56px, 0 0;
  }
}

@keyframes attract-eq {
  0%, 100% { transform: scaleY(0.35); }
  12% { transform: scaleY(0.95); }
  24% { transform: scaleY(0.52); }
  38% { transform: scaleY(1.25); }
  52% { transform: scaleY(0.7); }
  68% { transform: scaleY(1.05); }
  84% { transform: scaleY(0.44); }
}

@media (prefers-reduced-motion: reduce) {
  .home-screen__stars,
  .home-screen__stars span,
  .home-screen__sun,
  .home-screen__road,
  .home-screen__equalizer span,
  .home-screen__racer {
    animation: none;
  }
}

.home-screen__panel {
  position: relative;
  z-index: 5;
  width: min(100%, 34rem);
  min-height: 100dvh;
  margin: 0 auto;
  padding:
    max(1rem, env(safe-area-inset-top))
    max(0.9rem, env(safe-area-inset-right))
    max(1rem, env(safe-area-inset-bottom))
    max(0.9rem, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.home-screen--intro {
  overflow: hidden;
}

.home-screen--intro .home-screen__attract {
  opacity: 1;
  visibility: visible;
}

.home-screen--intro .home-screen__track-layer {
  opacity: 1;
  visibility: visible;
}

.home-screen--intro .home-screen__track-layer::before {
  opacity: 0.62;
}

.home-screen--intro .home-screen__sun {
  top: 50%;
  left: 50vw;
  width: min(72vw, 35rem);
  opacity: 0.48;
  transform: translate(-50%, -50%);
  animation: intro-sun-pulse 16s ease-in-out infinite;
}

.home-screen--intro .home-screen__road {
  bottom: -22%;
  width: min(182vw, 128rem);
  height: 104%;
  transform: translateX(-50%) perspective(38rem) rotateX(60deg);
  background:
    linear-gradient(90deg, transparent 0 17%, rgba(0, 243, 255, 0.34) 17.4% 18.1%, transparent 18.6% 71.4%, rgba(255, 0, 255, 0.3) 71.9% 72.6%, transparent 73%),
    linear-gradient(0deg, transparent 0 22%, rgba(0, 243, 255, 0.24) 22.4% 23.1%, transparent 23.6% 63.4%, rgba(255, 0, 255, 0.22) 63.9% 64.6%, transparent 65%),
    repeating-linear-gradient(0deg, transparent 0 52px, rgba(0, 243, 255, 0.12) 52px 55px, transparent 55px 104px),
    repeating-linear-gradient(90deg, transparent 0 82px, rgba(255, 0, 255, 0.07) 82px 84px, transparent 84px 164px),
    radial-gradient(ellipse at 50% 0%, rgba(255, 0, 255, 0.13), transparent 38%),
    linear-gradient(90deg, transparent 0 8%, rgba(3, 8, 18, 0.62) 18% 82%, transparent 92%);
  clip-path: none;
  opacity: 0.16;
  filter:
    drop-shadow(0 0 18px rgba(0, 243, 255, 0.16))
    drop-shadow(0 0 30px rgba(255, 0, 255, 0.1));
}

.home-screen--intro .home-screen__road::before {
  background:
    radial-gradient(ellipse at 50% 55%, rgba(255, 0, 255, 0.1), transparent 36%),
    linear-gradient(90deg, transparent 0 22%, rgba(255, 255, 255, 0.055) 23% 24%, transparent 25% 75%, rgba(255, 255, 255, 0.045) 76% 77%, transparent 78%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0 1px, transparent 1px 42px);
  clip-path: none;
  opacity: 0.58;
}

.home-screen--intro .home-screen__road span {
  background: linear-gradient(180deg, rgba(0, 243, 255, 0.05), rgba(0, 243, 255, 0.38));
  box-shadow: 0 0 14px rgba(0, 243, 255, 0.16);
}

.home-screen--intro .home-screen__panel {
  position: fixed;
  inset: 0;
  width: 100%;
  min-height: 100dvh;
  padding: max(1.2rem, env(safe-area-inset-top)) 1rem max(1rem, env(safe-area-inset-bottom));
  display: grid;
  place-items: center;
}

.home-screen--intro .home-screen__body,
.home-screen--intro .home-screen__column {
  display: contents;
}

.home-screen--intro .home-screen__section,
.home-screen--intro .home-screen__footer,
.home-screen--intro .home-screen__site-footer {
  display: none;
}

.home-screen--intro .home-screen__hero {
  position: fixed;
  left: 0;
  right: 0;
  top: 50%;
  z-index: 6;
  width: 100vw;
  max-width: 100vw;
  padding: 0 1rem;
  justify-items: center;
  transform: translateY(-50%);
  gap: clamp(0.5rem, 1.8vw, 0.9rem);
  animation: title-splash-hold 4s ease-in-out infinite;
}

.home-screen--intro .home-screen__eyebrow {
  font-size: clamp(0.9rem, 2.4vw, 1.35rem);
  color: rgba(255, 255, 255, 0.78);
  text-shadow: 0 0 14px rgba(0, 243, 255, 0.34);
}

.home-screen--intro .home-screen__title {
  width: auto;
  max-width: min(100%, 52rem);
  grid-template-columns: auto auto auto;
  font-size: clamp(3rem, 10.5vw, 7.6rem);
  gap: clamp(0.42rem, 1.6vw, 1.1rem);
  justify-self: center;
}

.home-screen--intro .home-screen__title-text {
  letter-spacing: 0.11em;
}

.home-screen--intro .home-screen__title-mark {
  width: 0.92em;
  height: 0.92em;
  background: url("/images/project-neon.svg") center / contain no-repeat;
  filter:
    drop-shadow(0 0 8px rgba(0, 243, 255, 0.78))
    drop-shadow(0 0 20px rgba(0, 243, 255, 0.38))
    drop-shadow(0 0 32px rgba(255, 0, 255, 0.18));
}

.home-screen--intro .home-screen__title-mark span {
  display: none;
}

.home-screen__title-start {
  display: none;
}

.home-screen--intro .home-screen__title-start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
  min-width: min(72vw, 17rem);
  min-height: 4rem;
  margin-top: clamp(0.6rem, 2vw, 1.2rem);
  padding: 0.65rem 1.4rem;
  border: 2px solid var(--neon-blue);
  border-radius: 0.45rem;
  background:
    linear-gradient(180deg, rgba(0, 243, 255, 0.24), rgba(0, 243, 255, 0.08)),
    rgba(5, 5, 5, 0.86);
  color: rgba(245, 254, 255, 0.98);
  font-family: "Exo 2", "Eurostile", "Bank Gothic", sans-serif;
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  font-weight: 900;
  letter-spacing: 0.18em;
  pointer-events: auto;
  box-shadow:
    inset 0 0 20px rgba(0, 243, 255, 0.12),
    0 0 24px rgba(0, 243, 255, 0.28);
  text-shadow:
    0 0 8px rgba(245, 254, 255, 0.34),
    0 0 16px rgba(0, 243, 255, 0.58);
  animation: start-control-pulse 2.8s ease-in-out infinite;
}

@media (max-width: 560px) {
  .home-screen--intro .home-screen__panel {
    padding-inline: max(0.85rem, env(safe-area-inset-left));
  }

  .home-screen--intro .home-screen__hero {
    left: 50%;
    right: auto;
    top: 50%;
    width: min(calc(100vw - 1.2rem), 24rem);
    max-width: calc(100vw - 1.2rem);
    padding-inline: 0;
    gap: 0.42rem;
    transform: translate(-50%, -50%);
    animation: title-splash-hold-mobile 4s ease-in-out infinite;
  }

  .home-screen--intro .home-screen__eyebrow {
    font-size: clamp(0.68rem, 3vw, 0.88rem);
  }

  .home-screen--intro .home-screen__title {
    width: 100%;
    max-width: 100%;
    grid-template-columns: auto minmax(0, auto) auto;
    gap: clamp(0.14rem, 1vw, 0.3rem);
    justify-content: center;
    font-size: clamp(1.72rem, 9.4vw, 2.55rem);
  }

  .home-screen--intro .home-screen__title-text {
    min-width: 0;
    letter-spacing: 0.025em;
    white-space: nowrap;
  }

  .home-screen--intro .home-screen__title-mark {
    width: 0.5em;
    height: 0.5em;
  }

  .home-screen--intro .home-screen__title-start {
    min-width: min(70vw, 13.5rem);
    min-height: 3.2rem;
    font-size: clamp(0.95rem, 4.4vw, 1.25rem);
    letter-spacing: 0.12em;
  }

}

@keyframes title-splash-hold-mobile {
  0%, 100% {
    opacity: 0.96;
    transform: translate(-50%, -50%) scale(0.99);
  }

  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.01);
  }
}

.home-screen--intro-exit .home-screen__hero {
  animation: title-splash-exit 0.62s cubic-bezier(0.7, 0, 0.2, 1) forwards;
}

@media (max-width: 560px) {
  .home-screen--intro-exit .home-screen__hero {
    animation: title-splash-exit-mobile 0.62s cubic-bezier(0.7, 0, 0.2, 1) forwards;
  }
}

.home-screen--intro-exit .home-screen__title-start {
  pointer-events: none;
}

.home-screen--menu .home-screen__panel {
  animation: menu-panel-in 0.5s ease both;
}

@keyframes title-splash-hold {
  0%, 100% {
    opacity: 0.96;
    transform: translateY(-50%) scale(0.99);
  }

  50% {
    opacity: 1;
    transform: translateY(-50%) scale(1.015);
  }
}

@keyframes intro-sun-pulse {
  0%, 100% {
    opacity: 0.42;
    transform: translate(-50%, -50%) scale(0.96);
  }

  50% {
    opacity: 0.54;
    transform: translate(-50%, -50%) scale(1.04);
  }
}

@keyframes title-splash-exit {
  0% {
    opacity: 1;
    transform: translateY(-50%) scale(1);
    filter: blur(0);
  }

  38% {
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
    filter: blur(0);
  }

  100% {
    opacity: 0;
    transform: translateY(-50%) scale(0.18);
    filter: blur(4px);
  }
}

@keyframes title-splash-exit-mobile {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    filter: blur(0);
  }

  38% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
    filter: blur(0);
  }

  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.18);
    filter: blur(4px);
  }
}

@keyframes menu-panel-in {
  from {
    opacity: 0;
    transform: translateY(0.8rem);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.home-screen__body {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.home-screen__column {
  display: contents;
}

.home-screen__hero {
  display: grid;
  gap: 0.35rem;
  text-align: center;
}

.home-screen__eyebrow {
  font-size: clamp(0.64rem, 2vw, 0.78rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.62);
}

.home-screen__title {
  font-family: "Exo 2", "Eurostile", "Bank Gothic", sans-serif;
  font-size: clamp(1.8rem, 8vw, 3rem);
  line-height: 1;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--neon-blue);
  text-shadow:
    0 0 12px rgba(0, 243, 255, 0.7),
    0 0 28px rgba(0, 243, 255, 0.35),
    0 0 46px rgba(255, 0, 255, 0.18);
  display: grid;
  grid-template-columns: minmax(2.8rem, 0.42fr) auto minmax(2.8rem, 0.42fr);
  align-items: center;
  justify-content: center;
  gap: clamp(0.32rem, 1.4vw, 0.7rem);
  margin: 0 auto;
  width: min(100%, 28rem);
  max-width: 100%;
}

.home-screen__title-text {
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.14em;
  line-height: 1;
  white-space: nowrap;
}

.home-screen__title-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex: 0 0 auto;
  width: 1em;
  height: 1em;
  background: url("/images/project-neon.svg") center / contain no-repeat;
  transform: translateY(0.04em);
  filter:
    drop-shadow(0 0 8px rgba(0, 243, 255, 0.78))
    drop-shadow(0 0 20px rgba(0, 243, 255, 0.38))
    drop-shadow(0 0 32px rgba(255, 0, 255, 0.18));
}

.home-screen__title-mark--right {
  transform: translateY(0.04em);
}

.home-screen__title-mark span {
  display: none;
}

.home-screen__title-mark span:nth-child(2) {
  animation-delay: 0.16s;
}

.home-screen__title-mark span:nth-child(3) {
  animation-delay: 0.32s;
}

@keyframes chevron-flow {
  0%, 100% {
    opacity: 0.48;
  }

  38% {
    opacity: 1;
  }
}

.home-screen__section {
  display: grid;
  gap: 0.55rem;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1rem;
}

.home-screen__section-title {
  font-size: clamp(0.68rem, 2.1vw, 0.82rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon-blue);
}

.home-screen__swatches {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  justify-items: center;
  align-items: center;
  width: 100%;
}

.home-screen__swatch {
  width: clamp(2.3rem, 8vw, 3.1rem);
  aspect-ratio: 1;
  min-width: 0;
  padding: 0;
  margin: 0;
  border-radius: 999px;
  border: 2px solid transparent;
}

.swatch-cyan {
  background: #00f3ff;
}

.swatch-magenta {
  background: #ff00ff;
}

.swatch-green {
  background: #39ff14;
}

.swatch-yellow {
  background: #ffff00;
}

.swatch-red {
  background: #ff3131;
}

.home-screen__fields {
  display: grid;
  gap: 0.55rem;
}

.home-screen__field {
  display: grid;
  gap: 0.3rem;
  text-align: left;
}

.home-screen__label {
  font-size: clamp(0.72rem, 2.2vw, 0.84rem);
  color: rgba(255, 255, 255, 0.82);
}

.home-screen__field select {
  width: 100%;
  min-width: 0;
  padding: 0.72rem 0.78rem;
  border-radius: 0.8rem;
  border: 1px solid rgba(0, 243, 255, 0.45);
  background: rgba(3, 10, 18, 0.94);
  color: white;
  font-size: clamp(0.84rem, 2.8vw, 0.96rem);
}

.home-screen__controls {
  display: grid;
  gap: 0.45rem;
}

.home-screen__controls--desktop {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.home-screen__controls--mobile {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.home-screen__control {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
  padding: 0.6rem 0.65rem;
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.home-screen__control--wide {
  grid-column: 1 / -1;
}

.home-screen__keys {
  display: flex;
  align-items: center;
  gap: 0.18rem;
  flex-wrap: wrap;
}

.home-screen__key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.9rem;
  min-height: 1.65rem;
  padding: 0.16rem 0.42rem;
  border-radius: 0.45rem;
  border: 1px solid rgba(0, 243, 255, 0.55);
  background: rgba(0, 243, 255, 0.1);
  color: var(--neon-blue);
  font-size: clamp(0.58rem, 1.9vw, 0.72rem);
  font-family: "Courier New", Courier, monospace;
  font-weight: 700;
}

.home-screen__slash {
  color: rgba(255, 255, 255, 0.45);
}

.home-screen__control-text {
  min-width: 0;
  font-size: clamp(0.66rem, 2vw, 0.8rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}

.home-screen__footer {
  display: grid;
  align-items: center;
  justify-content: stretch;
  padding: 0.8rem 0;
  background: transparent;
  border: 0;
}

.home-screen__start-row {
  width: 100%;
  display: flex;
  justify-content: center;
}

.home-screen__start {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.34rem, 1vw, 0.55rem);
  width: min(100%, 18rem);
  min-height: 3.65rem;
  margin-top: 0;
  padding: 0.7rem 0.8rem;
  border: 2px solid var(--neon-blue);
  border-radius: 0.5rem;
  background:
    linear-gradient(180deg, rgba(0, 243, 255, 0.2), rgba(0, 243, 255, 0.07)),
    rgba(5, 5, 5, 0.88);
  box-shadow:
    inset 0 0 20px rgba(0, 243, 255, 0.12),
    0 0 0 1px rgba(0, 243, 255, 0.22),
    0 0 26px rgba(0, 243, 255, 0.28);
  color: rgba(245, 254, 255, 0.96);
  font-family: "Exo 2", "Eurostile", "Bank Gothic", sans-serif;
  font-size: clamp(1.18rem, 4vw, 1.58rem);
  font-weight: 900;
  letter-spacing: 0.14em;
  text-shadow:
    0 0 8px rgba(245, 254, 255, 0.34),
    0 0 16px rgba(0, 243, 255, 0.58),
    0 0 30px rgba(0, 243, 255, 0.26);
  animation: start-control-pulse 2.8s ease-in-out infinite;
}

.home-screen__start:hover,
.home-screen__start:focus-visible {
  background:
    linear-gradient(180deg, rgba(0, 243, 255, 0.28), rgba(0, 243, 255, 0.12)),
    rgba(5, 5, 5, 0.88);
  border-color: var(--neon-blue);
  color: var(--neon-blue);
  box-shadow:
    0 0 0 3px rgba(0, 243, 255, 0.18),
    0 0 24px rgba(0, 243, 255, 0.34);
  text-shadow:
    0 0 10px rgba(0, 243, 255, 0.7),
    0 0 24px rgba(0, 243, 255, 0.38);
}

@keyframes start-control-pulse {
  0%, 100% {
    box-shadow:
      inset 0 0 20px rgba(0, 243, 255, 0.12),
      0 0 0 1px rgba(0, 243, 255, 0.22),
      0 0 22px rgba(0, 243, 255, 0.24);
  }

  50% {
    box-shadow:
      inset 0 0 26px rgba(0, 243, 255, 0.2),
      0 0 0 2px rgba(0, 243, 255, 0.24),
      0 0 34px rgba(0, 243, 255, 0.42);
  }
}

.home-screen__site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem 1rem;
  padding: 0 0 0.2rem;
  font-size: clamp(0.72rem, 2vw, 0.84rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.home-screen__site-footer a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: underline;
  text-decoration-color: rgba(0, 243, 255, 0.45);
  text-underline-offset: 0.25em;
  transition: color 0.2s, text-decoration-color 0.2s;
}

.home-screen__site-footer a:hover,
.home-screen__site-footer a:focus-visible {
  color: white;
  text-decoration-color: var(--neon-blue);
  outline: 2px solid var(--neon-blue);
  outline-offset: 0.25rem;
}

@media (max-width: 768px) {
  body.mobile-mode.start-screen-active #game-container {
    height: auto;
    min-height: 100dvh;
    align-items: flex-start;
  }

  .home-screen__panel {
    width: 100%;
    max-width: 32rem;
    min-height: 100dvh;
    gap: 0.7rem;
  }

  .home-screen__body {
    gap: 0.7rem;
  }

  .home-screen__section {
    padding: 0.72rem;
  }

  .home-screen__controls--mobile {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.42rem;
  }

  .home-screen__controls--mobile .home-screen__control {
    padding: 0.55rem 0.6rem;
    min-height: 3rem;
  }

  .home-screen__footer {
    position: static;
  }
}

@media (max-width: 768px) and (orientation: landscape) {
  body.mobile-mode.start-screen-active #game-container {
    min-height: 100dvh;
  }

  .home-screen__panel {
    padding:
      max(0.45rem, env(safe-area-inset-top))
      max(0.7rem, env(safe-area-inset-right))
      max(0.85rem, env(safe-area-inset-bottom))
      max(0.7rem, env(safe-area-inset-left));
    gap: 0.5rem;
  }

  .home-screen__body {
    gap: 0.5rem;
  }

  .home-screen__hero {
    gap: 0.2rem;
  }

  .home-screen__eyebrow {
    display: none;
  }

  .home-screen__title {
    font-size: clamp(1.2rem, 3.8vw, 1.7rem);
  }

  .home-screen__section {
    gap: 0.4rem;
    padding: 0.5rem;
  }

  .home-screen__section-title {
    font-size: clamp(0.56rem, 1.5vw, 0.66rem);
  }

  .home-screen__fields {
    gap: 0.45rem;
  }

  .home-screen__field select {
    padding: 0.52rem 0.62rem;
    font-size: clamp(0.72rem, 1.9vw, 0.82rem);
  }

  .home-screen__controls--mobile {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.35rem;
  }

  .home-screen__controls--mobile .home-screen__control {
    padding: 0.45rem 0.5rem;
    min-height: 2.65rem;
  }

  .home-screen__key {
    min-width: 1.65rem;
    min-height: 1.42rem;
    font-size: clamp(0.5rem, 1.35vw, 0.58rem);
  }

  .home-screen__control-text {
    font-size: clamp(0.54rem, 1.45vw, 0.64rem);
  }

  .home-screen__start {
    width: 100%;
    min-height: 2.55rem;
    font-size: clamp(0.72rem, 1.9vw, 0.82rem);
  }
}

@media (min-width: 769px) {
  .home-screen__panel {
    width: min(92vw, 46rem);
    min-height: 100vh;
    min-height: 100dvh;
    justify-content: center;
  }

  .home-screen__fields {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .modal {
    padding: 1.25rem;
    width: 95vw;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  p {
    font-size: 0.8rem;
  }
}

.modal.active {
  display: block;
  animation: fadeIn 0.3s ease-out;
}

.victory-title {
  color: var(--neon-green);
}

.victory-title--win {
  color: var(--neon-green);
}

.victory-title--loss {
  color: #ff0000;
}

.final-time {
  margin: 1rem 0;
  font-size: 2rem;
}

.course-mastery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid rgba(0, 243, 255, 0.2);
  border-radius: 0.5rem;
  background:
    linear-gradient(135deg, rgba(0, 243, 255, 0.08), transparent 42%),
    rgba(0, 0, 0, 0.3);
  text-align: left;
}

.course-mastery__medal {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  min-height: 3.35rem;
  padding: 0.45rem 0.65rem;
  border-radius: 0.45rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(90deg, rgba(0, 243, 255, 0.08), rgba(255, 0, 255, 0.05)),
    rgba(5, 8, 12, 0.42);
  color: rgba(255, 255, 255, 0.92);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.92rem;
  font-weight: 800;
  text-transform: uppercase;
  text-shadow: 0 0 10px rgba(0, 243, 255, 0.28);
}

.course-mastery__medal::before {
  content: attr(data-grade);
  flex: 0 0 auto;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.74);
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.28) 16%, transparent 28%),
    radial-gradient(circle at 50% 56%, rgba(5, 8, 12, 0.2) 0 34%, transparent 36%),
    linear-gradient(135deg, #53320d, #d18b25 42%, #ffe17a 54%, #8a560f);
  box-shadow:
    inset 0 0 0 3px rgba(5, 8, 12, 0.3),
    inset 0 -6px 10px rgba(0, 0, 0, 0.28),
    0 0 16px rgba(255, 205, 64, 0.34);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Exo 2", 'Orbitron', sans-serif;
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  text-shadow:
    0 1px 0 rgba(0, 0, 0, 0.72),
    0 0 8px rgba(255, 255, 255, 0.62),
    0 0 14px rgba(0, 243, 255, 0.28);
}

.course-mastery__medal--a::before,
.course-mastery__medal--gold::before {
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.95), transparent 18%),
    linear-gradient(135deg, #8a6200, #ffd45a 48%, #a16a00);
  box-shadow:
    inset 0 0 0 3px rgba(92, 58, 0, 0.34),
    inset 0 -6px 10px rgba(0, 0, 0, 0.24),
    0 0 18px rgba(255, 212, 90, 0.72);
}

.course-mastery__medal--b::before,
.course-mastery__medal--silver::before {
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.9), transparent 18%),
    linear-gradient(135deg, #68707a, #dfe7ef 48%, #7b8491);
  box-shadow:
    inset 0 0 0 3px rgba(45, 52, 61, 0.32),
    inset 0 -6px 10px rgba(0, 0, 0, 0.24),
    0 0 16px rgba(223, 231, 239, 0.54);
}

.course-mastery__medal--c::before,
.course-mastery__medal--bronze::before {
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.85), transparent 18%),
    linear-gradient(135deg, #613411, #c97931 48%, #774016);
  box-shadow:
    inset 0 0 0 3px rgba(72, 35, 8, 0.35),
    inset 0 -6px 10px rgba(0, 0, 0, 0.26),
    0 0 15px rgba(201, 121, 49, 0.58);
}

.course-mastery__medal--none {
  color: rgba(255, 255, 255, 0.68);
}

.course-mastery__medal--none::before {
  background:
    radial-gradient(circle at 35% 30%, rgba(255, 255, 255, 0.36), transparent 18%),
    linear-gradient(135deg, #232832, #4d5663 48%, #20242c);
  box-shadow:
    inset 0 0 0 3px rgba(0, 0, 0, 0.22),
    inset 0 -6px 10px rgba(0, 0, 0, 0.22),
    0 0 10px rgba(255, 255, 255, 0.12);
  opacity: 0.9;
}

.course-mastery__detail,
.course-mastery__best {
  min-height: 2.35rem;
  padding: 0.45rem 0.55rem;
  border-radius: 0.4rem;
  border: 1px solid rgba(0, 243, 255, 0.12);
  background: rgba(5, 8, 12, 0.36);
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.78rem;
  text-align: center;
  display: grid;
  place-items: center;
  line-height: 1.25;
}

@media (max-width: 480px) {
  .course-mastery {
    grid-template-columns: 1fr;
    padding: 0.75rem;
  }
}

.changelog-page {
  overflow: auto;
}

.changelog-page #game-container {
  min-height: 100dvh;
  height: auto;
  padding: 1rem;
}

.changelog-modal {
  display: block;
  max-width: 42rem;
  text-align: left;
}

.changelog-modal h1,
.changelog-modal .modal-subtitle {
  text-align: center;
}

.changelog-entry {
  display: grid;
  gap: 0.45rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(0, 243, 255, 0.22);
}

.changelog-entry h2 {
  color: var(--neon-blue);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.changelog-entry p,
.changelog-entry li {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.5;
}

.changelog-entry ul {
  display: grid;
  gap: 0.35rem;
  padding-left: 1.15rem;
}

.changelog-meta {
  color: rgba(255, 255, 255, 0.52);
  font-family: "Courier New", Courier, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.changelog-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.changelog-actions .button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  margin-top: 0;
  padding-inline: 0.75rem;
  text-align: center;
}

@media (max-width: 480px) {
  .changelog-actions {
    grid-template-columns: 1fr;
  }
}

button,
.button-link {
  background: transparent;
  border: 1px solid var(--neon-blue);
  color: var(--neon-blue);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  margin-top: 1rem;
  transition: all 0.2s;
  border-radius: 0.25rem;
  display: inline-block;
  text-decoration: none;
}

button:hover,
.button-link:hover {
  background: var(--neon-blue);
  color: black;
  box-shadow: 0 0 15px var(--neon-blue);
}

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

.countdown {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 8rem;
  font-weight: 900;
  color: var(--neon-blue);
  text-shadow: 0 0 30px var(--neon-blue);
  pointer-events: none;
  z-index: 200;
  opacity: 0;
  transition: all 0.2s;
}

@media (max-width: 768px) {
  .countdown {
    font-size: 4rem;
  }
}

.countdown.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.2);
}

.color-opt {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  margin: 0;
  transition: all 0.2s;
}

@media (max-width: 480px) {
  .color-opt {
    width: 2rem;
    height: 2rem;
  }
}

.color-opt:hover {
  transform: scale(1.1);
  box-shadow: 0 0 10px currentColor;
}

.color-opt.active {
  border-color: white;
  box-shadow: 0 0 15px currentColor;
}

.mobile-action-buttons {
  display: none;
}

.mobile-only { display: none !important; }

body.mobile-mode .desktop-only { display: none !important; }
body.mobile-mode .mobile-only { display: flex !important; }
body.mobile-mode .home-screen__section.mobile-only { display: grid !important; }

body.mobile-mode .home-screen--intro .mobile-only,
body.mobile-mode .home-screen--intro .home-screen__section.mobile-only,
body.mobile-mode.start-screen-active .mobile-race-controls {
  display: none !important;
}

.mobile-action-btn {
  width: clamp(3rem, 13vw, 4rem);
  height: clamp(3rem, 13vw, 4rem);
  margin-top: 0;
  padding: 0;
  border-radius: 999px;
  background: rgba(5, 5, 5, 0.42);
  backdrop-filter: blur(5px);
  font-size: clamp(0.56rem, 2.3vw, 0.74rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.12);
  touch-action: manipulation;
  pointer-events: all;
}

.mobile-utility-btn {
  width: clamp(2.35rem, 10vw, 2.9rem);
  height: clamp(2.35rem, 10vw, 2.9rem);
  margin-top: 0;
  padding: 0;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: rgba(5, 5, 5, 0.55);
  backdrop-filter: blur(5px);
  font-size: clamp(0.7rem, 2.4vw, 0.86rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  box-shadow: 0 0 10px rgba(0, 243, 255, 0.14);
  touch-action: manipulation;
  pointer-events: all;
}

.mobile-action-btn:active,
.mobile-action-btn.active {
  background: rgba(0, 243, 255, 0.22);
  box-shadow: 0 0 20px rgba(0, 243, 255, 0.35);
}

.mobile-brake-btn {
  border-color: rgba(255, 0, 90, 0.75);
  color: #ff6d8c;
}

.mobile-boost-btn {
  border-color: rgba(255, 255, 255, 0.7);
  color: white;
}

.settings-panel {
  display: flex;
  gap: 0.5rem;
  pointer-events: all;
  z-index: 150;
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 480px) {
  .settings-panel {
    gap: 0.25rem;
  }
}

.icon-btn {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: rgba(0, 0, 0, 0.5);
}

.control-icon {
  width: 1.15rem;
  height: 1.15rem;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.25;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mobile-utility-btn .control-icon {
  width: 1.35rem;
  height: 1.35rem;
  stroke-width: 2.6;
}

@media (max-width: 480px) {
  .icon-btn {
    width: 2rem;
    height: 2rem;
    font-size: 0.8rem;
  }

  .mobile-utility-btn {
    width: clamp(2.1rem, 12vw, 2.55rem);
    height: clamp(2.1rem, 12vw, 2.55rem);
    font-size: clamp(0.64rem, 2.6vw, 0.76rem);
  }
}

.icon-btn.off {
  opacity: 0.5;
  border-color: #555;
  color: #555;
}

@media (max-width: 480px) {
  .mobile-action-btn {
    width: clamp(2.9rem, 16vw, 3.4rem);
    height: clamp(2.9rem, 16vw, 3.4rem);
  }
}

@media (max-width: 768px) and (orientation: landscape) {
  .mobile-action-btn {
    width: clamp(2.7rem, 8vw, 3.2rem);
    height: clamp(2.7rem, 8vw, 3.2rem);
    font-size: clamp(0.5rem, 1.6vw, 0.64rem);
  }

  .mobile-utility-btn {
    width: clamp(2rem, 7vw, 2.4rem);
    height: clamp(2rem, 7vw, 2.4rem);
    font-size: clamp(0.58rem, 1.5vw, 0.72rem);
  }

  .mobile-utility-btn .control-icon {
    width: 1.12rem;
    height: 1.12rem;
    stroke-width: 2.65;
  }
}

.mobile-race-controls {
  display: none;
}

body.mobile-mode .mobile-race-controls {
  display: grid !important;
  position: absolute;
  left: max(0.65rem, env(safe-area-inset-left));
  right: max(0.65rem, env(safe-area-inset-right));
  bottom: max(0.65rem, env(safe-area-inset-bottom));
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: end;
  gap: clamp(0.45rem, 2.4vmin, 0.8rem);
  z-index: 170;
  pointer-events: none;
}

body.mobile-mode .mobile-race-controls__utility {
  position: static;
  grid-row: 1;
  align-self: end;
  display: flex;
  flex-direction: row;
  gap: 0.45rem;
  pointer-events: none;
}

body.mobile-mode .mobile-race-controls__utility--left {
  grid-column: 1;
  justify-self: start;
}

body.mobile-mode .mobile-race-controls__utility--right {
  grid-column: 3;
  justify-self: end;
}

body.mobile-mode .mobile-steer-buttons {
  position: static;
  grid-column: 1;
  grid-row: 2;
  justify-self: start;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: end;
  gap: clamp(0.45rem, 2.4vmin, 0.8rem);
  width: min(100%, clamp(8rem, 38vmin, 13rem));
  pointer-events: none;
}

body.mobile-mode .mobile-action-buttons {
  position: static;
  grid-column: 3;
  grid-row: 2;
  justify-self: end;
  left: auto;
  width: min(100%, clamp(8rem, 38vmin, 12.2rem));
  padding: 0;
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: flex-end;
  gap: clamp(0.45rem, 2.4vmin, 0.8rem);
  pointer-events: none;
}

.mobile-steer-btn,
.mobile-action-btn,
.mobile-utility-btn {
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

.mobile-steer-btn {
  width: 100%;
  max-width: clamp(4rem, 17vmin, 6rem);
  justify-self: center;
  height: auto;
  aspect-ratio: 1;
  margin: 0;
  padding: 0;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border-color: rgba(0, 243, 255, 0.64);
  background: rgba(5, 5, 5, 0.46);
  color: white;
  letter-spacing: 0;
  backdrop-filter: blur(6px);
  box-shadow: 0 0 16px rgba(0, 243, 255, 0.14);
  pointer-events: all;
}

.mobile-steer-icon {
  width: 58%;
  height: 58%;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 3.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 6px rgba(0, 243, 255, 0.35));
}

.mobile-steer-icon--left {
  transform: translateX(-0.16rem);
}

.mobile-steer-icon--right {
  transform: translateX(0.16rem);
}

body.mobile-mode .mobile-action-btn {
  width: 100%;
  justify-self: center;
  min-width: 0;
  max-width: clamp(4rem, 17vmin, 5.7rem);
  height: auto;
  aspect-ratio: 1;
  font-size: clamp(0.58rem, 2.4vmin, 0.78rem);
  pointer-events: all;
}

body.mobile-mode .mobile-utility-btn {
  width: clamp(2.35rem, 8.5vmin, 3rem);
  height: clamp(2.35rem, 8.5vmin, 3rem);
  pointer-events: all;
}

.mobile-toggle-btn {
  font-size: clamp(0.46rem, 1.65vmin, 0.62rem);
  letter-spacing: 0;
  line-height: 1;
}

.mobile-toggle-btn.active {
  background: rgba(57, 255, 20, 0.18);
  border-color: rgba(57, 255, 20, 0.78);
  color: var(--neon-green);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.22);
}

.mobile-steer-btn:active,
.mobile-steer-btn.active {
  background: rgba(0, 243, 255, 0.24);
  box-shadow: 0 0 22px rgba(0, 243, 255, 0.34);
}

@media (max-width: 768px) and (orientation: landscape) {
  body.mobile-mode .mobile-race-controls {
    left: max(0.5rem, env(safe-area-inset-left));
    right: max(0.5rem, env(safe-area-inset-right));
    bottom: max(0.45rem, env(safe-area-inset-bottom));
  }

  body.mobile-mode .mobile-steer-buttons {
    width: clamp(8rem, 29vmin, 10rem);
  }

  .mobile-steer-btn,
  body.mobile-mode .mobile-action-btn {
    max-width: clamp(3.5rem, 15vmin, 4.7rem);
  }
}

@media (orientation: landscape) {
  body.mobile-mode .mobile-race-controls {
    --landscape-control-size: clamp(3.15rem, 14.5vmin, 4.25rem);
    --landscape-utility-size: clamp(2rem, 8.8vmin, 2.45rem);
    left: max(0.55rem, env(safe-area-inset-left));
    right: max(0.55rem, env(safe-area-inset-right));
    bottom: max(0.5rem, env(safe-area-inset-bottom));
    grid-template-columns: minmax(8rem, 1fr) auto minmax(8rem, 1fr);
    gap: clamp(0.5rem, 2vmin, 0.85rem);
  }

  body.mobile-mode .mobile-steer-buttons,
  body.mobile-mode .mobile-action-buttons {
    width: calc((var(--landscape-control-size) * 2) + clamp(0.4rem, 1.6vmin, 0.65rem));
    gap: clamp(0.4rem, 1.6vmin, 0.65rem);
  }

  body.mobile-mode .mobile-steer-buttons {
    justify-self: start;
  }

  body.mobile-mode .mobile-action-buttons {
    justify-self: end;
  }

  body.mobile-mode .mobile-race-controls__utility {
    align-self: end;
    gap: clamp(0.35rem, 1.4vmin, 0.55rem);
    padding-bottom: 0;
  }

  body.mobile-mode .mobile-steer-btn,
  body.mobile-mode .mobile-action-btn {
    width: var(--landscape-control-size);
    max-width: var(--landscape-control-size);
  }

  body.mobile-mode .mobile-utility-btn {
    width: var(--landscape-utility-size);
    height: var(--landscape-utility-size);
    font-size: clamp(0.58rem, 2vmin, 0.72rem);
  }

  body.mobile-mode .mobile-action-btn {
    font-size: clamp(0.5rem, 1.9vmin, 0.66rem);
  }
}