:root {
  --bg-1: #060c16;
  --bg-2: #121f35;
  --bg-3: #1b3559;
  --panel: rgba(8, 17, 31, 0.84);
  --panel-strong: rgba(7, 19, 36, 0.94);
  --line: rgba(151, 200, 255, 0.28);
  --text: #eef5ff;
  --muted: #b9c8de;
  --accent: #49e0ff;
  --accent-2: #ff6f7d;
  --ok: #52f0c3;
  --gold: #ffd54f;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Trebuchet MS", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(73, 224, 255, 0.2), transparent 40%),
    radial-gradient(circle at 82% 16%, rgba(255, 111, 125, 0.18), transparent 33%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 56%, var(--bg-3));
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at center, black 24%, transparent 88%);
  opacity: 0.3;
  z-index: 0;
}

a {
  color: inherit;
}

.page {
  position: relative;
  z-index: 1;
  width: min(1320px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1.2rem, 2vw, 2rem) 0 clamp(1.4rem, 2.8vw, 2.6rem);
  display: grid;
  gap: clamp(1rem, 2vw, 1.5rem);
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: linear-gradient(145deg, rgba(8, 20, 39, 0.9), rgba(12, 31, 58, 0.66));
}

.hero-logo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 118px;
  padding: clamp(0.7rem, 1.35vw, 0.95rem) 1.05rem clamp(0.7rem, 1.35vw, 0.95rem) 100px;
  position: relative;
  overflow: hidden;
}

.hero-logo::after,
.runner-intro::after {
  content: "";
  position: absolute;
  inset: auto -10% -30% 42%;
  height: 220px;
  background: radial-gradient(circle, rgba(73, 224, 255, 0.22), transparent 70%);
  pointer-events: none;
}

.logo-wrap {
  display: block;
  margin-right: 1.15rem;
  padding-block: 0.1rem;
  text-decoration: none;
  z-index: 2;
}

.logo-wrap:focus-visible,
.hero-actions a:focus-visible,
.game-card button:focus-visible,
.submit-button:focus-visible,
.text-input:focus-visible,
.radio-links a:focus-visible {
  outline: 2px solid rgba(144, 228, 255, 0.84);
  outline-offset: 4px;
  border-radius: 12px;
}

.brand-logo {
  width: clamp(224px, 32vw, 574px);
  height: auto;
  display: block;
}

.header-radio {
  width: min(180px, 18vw);
  margin-left: auto;
  z-index: 2;
  display: grid;
  gap: 0.25rem;
}

.header-radio-line {
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  white-space: nowrap;
  color: #dffbff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.station-pill,
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(82, 240, 195, 0.45);
  background: rgba(82, 240, 195, 0.12);
  color: #dbfff2;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.radio-shell {
  display: grid;
  gap: 0.45rem;
  padding: 0.7rem 0.75rem 0.78rem;
  border-radius: 16px;
  border: 1px solid rgba(73, 224, 255, 0.28);
  background: rgba(5, 13, 25, 0.62);
  backdrop-filter: blur(14px);
}

audio {
  width: 100%;
  min-width: 0;
}

.radio-links {
  display: flex;
  justify-content: space-between;
  gap: 0.45rem;
  font-size: 0.72rem;
}

.runner-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.8fr);
  gap: clamp(1rem, 2vw, 1.4rem);
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: clamp(1.15rem, 2.5vw, 2rem);
}

.runner-intro-copy {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.8rem;
}

.runner-intro-copy h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.runner-intro-copy p {
  margin: 0;
  max-width: 48rem;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.45vw, 1.1rem);
  line-height: 1.56;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.78rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cta,
.game-card button,
.submit-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.78rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(73, 224, 255, 0.36);
  background: rgba(10, 24, 44, 0.72);
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
}

.cta.primary {
  background: linear-gradient(135deg, rgba(73, 224, 255, 0.22), rgba(82, 240, 195, 0.2));
  border-color: rgba(73, 224, 255, 0.55);
}

.runner-intro-visual {
  position: relative;
  min-height: 240px;
}

.runner-orbit {
  position: absolute;
  inset: 12% 12%;
  border-radius: 50%;
  border: 1px dashed rgba(151, 200, 255, 0.22);
}

.runner-hero-robot {
  position: absolute;
  right: 10%;
  bottom: 0;
  width: min(240px, 70%);
  height: auto;
  filter: drop-shadow(0 24px 38px rgba(0, 0, 0, 0.42));
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: clamp(1rem, 2vw, 1.35rem);
  align-items: start;
}

.game-card,
.sidebar {
  display: grid;
  gap: clamp(0.9rem, 1.6vw, 1.15rem);
  min-width: 0;
}

.game-card {
  padding: clamp(1rem, 2vw, 1.35rem);
}

.game-top {
  display: flex;
  gap: 0.8rem;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: flex-end;
}

.game-top h2 {
  margin: 0;
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
}

.game-top p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.hud {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

.chip {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 0.38rem 0.66rem;
  font-size: 0.82rem;
  background: rgba(255, 255, 255, 0.08);
}

.canvas-wrap {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 14px;
  overflow: hidden;
  background: #0b1323;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 280;
  touch-action: none;
}

.message {
  position: absolute;
  left: 50%;
  top: 0.9rem;
  transform: translateX(-50%);
  width: min(95%, 560px);
  text-align: center;
  padding: 0.34rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(4, 11, 22, 0.72);
  font-size: 0.83rem;
  letter-spacing: 0.02em;
  transition: opacity 160ms ease;
}

.message.hidden {
  opacity: 0;
}

.controls {
  display: flex;
  gap: 0.55rem;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.86rem;
}

.controls kbd,
.tips-list kbd {
  display: inline-block;
  margin-inline: 0.12rem;
  padding: 0.15rem 0.33rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.77rem;
  font-family: inherit;
}

.touch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.touch button {
  min-height: 3rem;
  font-size: 0.95rem;
  background: linear-gradient(130deg, #1f6f99, #214765);
  border: 1px solid rgba(73, 224, 255, 0.35);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

#duckBtn.active {
  background: linear-gradient(130deg, #a34d5e, #7e3042);
  border-color: rgba(255, 111, 125, 0.5);
}

.sidebar {
  align-content: start;
}

.leaderboard-card,
.score-card,
.tips-card {
  padding: 1rem;
  display: grid;
  gap: 0.75rem;
}

.leaderboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.leaderboard-header h3 {
  margin: 0.1rem 0 0;
  font-size: 1.25rem;
}

.leaderboard-meta,
.identity-status,
.submit-copy,
.submit-feedback {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.leaderboard-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.leaderboard-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.8rem 0.9rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.leaderboard-item.is-highlighted {
  border-color: rgba(255, 213, 79, 0.55);
  background: rgba(255, 213, 79, 0.12);
}

.leaderboard-rank {
  color: var(--gold);
  font-weight: 700;
  min-width: 1.8rem;
  font-size: 1rem;
}

.leaderboard-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard-score {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.leaderboard-empty {
  padding: 0.8rem 0.9rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
}

.score-form {
  display: grid;
  gap: 0.65rem;
}

.score-form.is-hidden {
  display: none;
}

.form-label {
  color: var(--muted);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.submit-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.6rem;
}

.text-input {
  width: 100%;
  min-width: 0;
  border-radius: 999px;
  border: 1px solid rgba(73, 224, 255, 0.32);
  background: rgba(4, 11, 22, 0.72);
  color: var(--text);
  padding: 0.8rem 1rem;
  font: inherit;
}

.submit-button {
  white-space: nowrap;
}

.tips-list {
  margin: 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.55rem;
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 920px) {
  .hero-logo,
  .runner-intro {
    grid-template-columns: 1fr;
  }

  .header-radio {
    width: min(100%, 360px);
    margin-left: 0;
  }

  .runner-intro-visual {
    min-height: 190px;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .page {
    width: min(100% - 1rem, 1320px);
  }

  .hero-logo {
    padding-left: 1rem;
  }

  .submit-row {
    grid-template-columns: 1fr;
  }

  .game-top,
  .leaderboard-header {
    flex-direction: column;
    align-items: flex-start;
  }
}