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

:root {
  --bg: #03040d;
  --panel: rgba(5, 8, 24, 0.92);
  --ink: #e9fbff;
  --cyan: #29f4ff;
  --cyan-soft: rgba(41, 244, 255, 0.24);
  --pink: #ff3bbd;
  --violet: #8e54ff;
  --gold: #ffd447;
  --green: #46ffb1;
  --red: #ff3b5c;
  --edge: #112a5c;
}

html,
body {
  min-height: 100%;
  background: var(--bg);
}

body {
  color: var(--ink);
  font-family: "Space Mono", monospace;
  text-transform: uppercase;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 18%, rgba(41, 244, 255, 0.16), transparent 26%),
    radial-gradient(circle at 78% 22%, rgba(255, 59, 189, 0.14), transparent 24%),
    linear-gradient(180deg, #06091d 0%, #03040d 52%, #05020b 100%);
}

.top-nav {
  position: relative;
  z-index: 20;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 4vw;
  border-bottom: 2px solid rgba(41, 244, 255, 0.72);
  background: rgba(2, 4, 14, 0.94);
  box-shadow: 0 0 22px rgba(41, 244, 255, 0.18);
}

.nav-logo {
  color: var(--cyan);
  font-family: "VT323", monospace;
  font-size: 2.1rem;
  line-height: 1;
  text-decoration: none;
  text-shadow: 0 0 12px rgba(41, 244, 255, 0.7);
}

.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nav-menu a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.76rem;
  padding: 8px 13px;
  border: 1px solid rgba(41, 244, 255, 0.46);
  background: rgba(5, 12, 31, 0.75);
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #041019;
  background: var(--cyan);
  border-color: var(--cyan);
}

.game-shell {
  min-height: calc(100vh - 68px);
  padding: 18px clamp(12px, 2vw, 28px) 24px;
}

.game-stage {
  position: relative;
  width: min(1600px, 100%);
  margin: 0 auto;
}

.hud-strip {
  display: grid;
  grid-template-columns: minmax(330px, 1.2fr) minmax(120px, 0.4fr) minmax(140px, 0.42fr) minmax(160px, 0.5fr);
  gap: 12px;
  margin-bottom: 12px;
}

.runner-card,
.hud-chip,
.mission-panel,
.how-panel,
.status-line {
  border: 2px solid rgba(41, 244, 255, 0.78);
  background: linear-gradient(180deg, rgba(7, 15, 39, 0.96), rgba(4, 6, 19, 0.94));
  box-shadow:
    inset 0 0 0 2px rgba(255, 59, 189, 0.08),
    0 0 20px rgba(41, 244, 255, 0.14);
}

.runner-card {
  min-height: 82px;
  display: grid;
  grid-template-columns: 68px minmax(120px, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 14px 10px 10px;
  clip-path: polygon(0 0, calc(100% - 36px) 0, 100% 38px, calc(100% - 18px) 100%, 0 100%);
}

.avatar {
  position: relative;
  width: 58px;
  height: 58px;
  border: 2px solid var(--cyan);
  background:
    linear-gradient(135deg, rgba(41, 244, 255, 0.16), rgba(255, 59, 189, 0.08)),
    #07152c;
  image-rendering: pixelated;
  overflow: hidden;
}

.avatar::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 18px;
  width: 30px;
  height: 28px;
  background: #ffd4a8;
  box-shadow:
    0 12px 0 #263456,
    -8px -8px 0 #118fff,
    -2px -13px 0 #29f4ff,
    8px -10px 0 #0c57ff,
    18px -3px 0 #084ed1,
    20px 19px 0 #0a0b18;
}

.avatar span,
.avatar i,
.avatar b {
  position: absolute;
  display: block;
  background: #07152c;
}

.avatar span {
  left: 24px;
  top: 30px;
  width: 5px;
  height: 5px;
  box-shadow: 17px 0 0 #07152c;
}

.avatar i {
  left: 19px;
  top: 45px;
  width: 22px;
  height: 6px;
  background: var(--cyan);
}

.avatar b {
  left: 8px;
  top: 42px;
  width: 14px;
  height: 8px;
  background: var(--pink);
}

.runner-name {
  color: var(--cyan);
  font-family: "VT323", monospace;
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  line-height: 0.9;
  text-shadow: 0 0 10px rgba(41, 244, 255, 0.72);
}

.runner-level {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  color: #07121d;
  background: var(--ink);
  font-size: 0.78rem;
  font-weight: 700;
}

.heart-row {
  display: grid;
  grid-template-columns: repeat(7, 18px);
  gap: 6px;
  align-items: center;
}

.heart {
  width: 18px;
  height: 18px;
  background: var(--red);
  box-shadow: 0 0 8px rgba(255, 59, 92, 0.72);
  clip-path: polygon(50% 95%, 6% 48%, 6% 20%, 22% 5%, 42% 5%, 50% 16%, 58% 5%, 78% 5%, 94% 20%, 94% 48%);
}

.heart.empty {
  background: transparent;
  border: 2px solid rgba(233, 251, 255, 0.35);
  box-shadow: none;
}

.hud-chip {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px;
  color: var(--ink);
  font-size: clamp(1rem, 2vw, 1.45rem);
  font-weight: 700;
}

.coin-icon,
.shard-icon,
.key-icon {
  display: inline-block;
  flex: 0 0 auto;
  image-rendering: pixelated;
}

.coin-icon {
  width: 28px;
  height: 28px;
  border: 4px solid #fff0a5;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: inset 0 0 0 4px #ff9c1a, 0 0 12px rgba(255, 212, 71, 0.8);
}

.shard-icon {
  width: 24px;
  height: 32px;
  background: linear-gradient(135deg, #fff, #c459ff 45%, #742cff);
  clip-path: polygon(50% 0, 100% 35%, 76% 100%, 24% 100%, 0 35%);
  box-shadow: 0 0 14px rgba(196, 89, 255, 0.9);
}

.key-icon {
  width: 34px;
  height: 20px;
  border: 4px solid var(--gold);
  border-right-width: 12px;
  box-shadow: 0 0 12px rgba(255, 212, 71, 0.8);
}

.canvas-shell {
  position: relative;
  overflow: hidden;
  border: 4px solid #0d2c71;
  background: #020510;
  box-shadow:
    0 0 0 2px rgba(41, 244, 255, 0.65),
    0 0 38px rgba(41, 244, 255, 0.24);
}

#game-container {
  position: relative;
  width: 100%;
  display: block;
  background: #020510;
}

canvas {
  display: block;
  width: 100% !important;
  height: auto !important;
  aspect-ratio: 16 / 9;
  image-rendering: pixelated;
  outline: none;
}

.how-panel {
  position: absolute;
  left: 18px;
  top: 102px;
  z-index: 4;
  width: min(238px, 32vw);
  padding: 14px 16px 16px;
  color: var(--ink);
}

.how-panel h2 {
  color: var(--cyan);
  font-family: "VT323", monospace;
  font-size: 2.15rem;
  line-height: 1;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(41, 244, 255, 0.55);
  padding-bottom: 8px;
}

.how-panel div {
  display: grid;
  grid-template-columns: 32px 50px 1fr;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  font-size: 0.82rem;
}

.how-panel b {
  color: var(--cyan);
  font-size: 0.82rem;
}

.control-icon {
  position: relative;
  display: inline-block;
  width: 22px;
  height: 22px;
}

.run-icon::before,
.jump-icon::before,
.stomp-icon::before,
.dash-icon::before,
.use-icon::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--green);
  box-shadow: 0 0 10px rgba(70, 255, 177, 0.65);
}

.run-icon::before {
  clip-path: polygon(4% 45%, 34% 14%, 55% 14%, 42% 42%, 68% 42%, 96% 66%, 84% 84%, 56% 63%, 34% 63%, 18% 90%, 0 82%, 18% 52%);
}

.jump-icon::before {
  clip-path: polygon(50% 0, 96% 48%, 72% 48%, 72% 100%, 28% 100%, 28% 48%, 4% 48%);
}

.stomp-icon::before {
  clip-path: polygon(28% 0, 72% 0, 72% 52%, 96% 52%, 50% 100%, 4% 52%, 28% 52%);
}

.dash-icon::before {
  clip-path: polygon(0 18%, 62% 18%, 62% 0, 100% 50%, 62% 100%, 62% 82%, 0 82%);
}

.use-icon::before {
  clip-path: polygon(6% 16%, 72% 16%, 94% 50%, 72% 84%, 6% 84%, 28% 50%);
}

.mission-panel {
  position: absolute;
  right: 18px;
  top: 18px;
  z-index: 4;
  width: min(308px, 36vw);
  padding: 11px 14px;
}

.mission-panel div {
  color: var(--cyan);
  font-family: "VT323", monospace;
  font-size: 1.65rem;
  line-height: 1;
}

.mission-panel p {
  color: rgba(233, 251, 255, 0.82);
  font-size: 0.7rem;
  line-height: 1.45;
  margin-top: 8px;
}

.status-line {
  min-height: 40px;
  margin-top: 12px;
  padding: 10px 14px;
  color: rgba(233, 251, 255, 0.86);
  font-size: 0.78rem;
}

.screen-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(2, 4, 14, 0.2), rgba(2, 4, 14, 0.74)),
    repeating-linear-gradient(0deg, rgba(41, 244, 255, 0.08) 0 1px, transparent 1px 6px);
}

.screen-overlay.hidden {
  display: none;
}

.screen-card {
  width: min(680px, 92vw);
  padding: clamp(22px, 4vw, 42px);
  border: 3px solid var(--cyan);
  background: rgba(4, 8, 22, 0.95);
  text-align: center;
  box-shadow:
    0 0 0 8px rgba(41, 244, 255, 0.08),
    0 0 42px rgba(255, 59, 189, 0.22);
}

.screen-card .kicker {
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 700;
}

.screen-card h1 {
  color: var(--cyan);
  font-family: "VT323", monospace;
  font-size: clamp(4.5rem, 12vw, 8.5rem);
  font-weight: 400;
  line-height: 0.86;
  margin: 12px 0;
  text-shadow: 4px 0 0 rgba(255, 59, 189, 0.78), 0 0 20px rgba(41, 244, 255, 0.8);
}

.screen-card p {
  max-width: 580px;
  margin: 0 auto 22px;
  color: rgba(233, 251, 255, 0.86);
  line-height: 1.7;
  font-size: 0.9rem;
}

button {
  appearance: none;
  border: 2px solid var(--cyan);
  background: #06122b;
  color: var(--cyan);
  padding: 12px 22px;
  font: 700 0.88rem "Space Mono", monospace;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 0 14px rgba(41, 244, 255, 0.2);
}

button:hover,
button:focus-visible {
  color: #03101a;
  background: var(--cyan);
  outline: none;
}

button.danger {
  color: var(--red);
  border-color: var(--red);
}

button.danger:hover,
button.danger:focus-visible {
  color: #120208;
  background: var(--red);
}

.touch-controls {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 8;
  display: none;
  grid-template-columns: repeat(4, minmax(54px, 1fr));
  gap: 10px;
  pointer-events: none;
}

.touch-controls button {
  min-height: 46px;
  pointer-events: auto;
  background: rgba(5, 12, 31, 0.72);
  backdrop-filter: blur(4px);
}

@media (max-width: 1120px) {
  .hud-strip {
    grid-template-columns: 1fr 1fr;
  }

  .runner-card {
    grid-column: 1 / -1;
  }

  .how-panel {
    top: auto;
    bottom: 72px;
    width: min(238px, 44vw);
  }
}

@media (max-width: 780px) {
  body {
    overflow-x: hidden;
  }

  .top-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .hud-strip {
    grid-template-columns: 1fr;
  }

  .hud-chip,
  .runner-card {
    min-height: 62px;
  }

  .runner-card {
    grid-template-columns: 58px 1fr;
    clip-path: none;
  }

  .heart-row {
    grid-column: 1 / -1;
    grid-template-columns: repeat(7, 16px);
  }

  .heart {
    width: 16px;
    height: 16px;
  }

  .mission-panel,
  .how-panel {
    display: none;
  }

  .touch-controls {
    display: grid;
  }
}