* {
  box-sizing: border-box;
}

:root {
  --bg: #050a05;
  --bg-soft: #0a140a;
  --panel: rgba(15, 30, 15, 0.78);
  --panel-line: rgba(155, 188, 15, 0.15);
  --text: #9bbc0f;
  --muted: #627d07;
  --you: #8bac0f;
  --opponent: #306230;
  --danger: #e0f8cf;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  font-family: "Segoe UI Variable Display", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(155, 188, 15, 0.15), transparent 40%),
    radial-gradient(circle at bottom left, rgba(48, 98, 48, 0.2), transparent 40%),
    linear-gradient(160deg, var(--bg) 0%, #081208 55%, var(--bg-soft) 100%);
}

.app {
  display: grid;
  gap: 20px;
  width: min(100%, 980px);
}

.hero {
  display: grid;
  gap: 8px;
  text-align: center;
  justify-items: center;
}

.hero-logo {
  width: 240px;
  height: 160px;
  object-fit: cover;
  border-radius: 20px;
  border: 2px solid var(--panel-line);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  margin-bottom: 8px;
}

.eyebrow,
.lede,
.hint,
.label,
.field span {
  color: var(--muted);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.72rem;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.hero-subtitle {
  font-size: clamp(1rem, 3vw, 1.4rem);
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.lede {
  max-width: 52ch;
}

.shell {
  display: grid;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--panel-line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.join-form,
.scoreboard {
  display: grid;
  gap: 16px;
}

.join-form {
  grid-template-columns: 1fr auto;
  align-items: end;
}

.field {
  display: grid;
  gap: 8px;
}

input,
button {
  border: 0;
  border-radius: 14px;
  font: inherit;
}

input {
  width: 100%;
  padding: 16px 18px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

button {
  padding: 16px 18px;
  cursor: pointer;
  font-weight: 700;
  color: #042f2e;
  background: linear-gradient(135deg, var(--you) 0%, #a7f3d0 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.queue-card,
.player-card {
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.03);
}

.queue-card {
  padding: 18px;
  display: grid;
  gap: 8px;
}

.queue-card[hidden],
.arena[hidden],
.lobby[hidden] {
  display: none;
}

.queue-loading {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
}

.spinner {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--you);
  animation: spin 0.8s linear infinite;
}

.queue-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.queue-title {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: var(--muted);
}

.queue-count {
  font-size: 0.75rem;
  color: var(--you);
  font-weight: 600;
}

.status {
  padding: 12px 14px;
  border: 1px solid rgba(94, 234, 212, 0.18);
  border-radius: 999px;
  background: rgba(94, 234, 212, 0.08);
  color: #d9fffb;
}

.arena {
  display: grid;
  gap: 16px;
}

.arena-banner {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 6px;
  padding: 20px 24px;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.08), transparent 45%),
    rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(8px);
}

.arena-banner[hidden] {
  display: none;
}

.arena-banner::before {
  content: "";
  position: absolute;
  inset: -40% auto auto -10%;
  width: 240px;
  height: 240px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  filter: blur(14px);
  pointer-events: none;
}

.arena-banner::after {
  content: "";
  position: absolute;
  inset: auto -8% -70% auto;
  width: 260px;
  height: 260px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  filter: blur(18px);
  pointer-events: none;
}

.arena-banner-kicker,
.arena-banner-copy {
  position: relative;
  z-index: 1;
}

.arena-banner-kicker {
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.72);
}

.arena-banner-title {
  position: relative;
  z-index: 1;
  font-size: clamp(2.3rem, 7vw, 4.8rem);
  line-height: 0.88;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.arena-banner-copy {
  max-width: 42ch;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.88);
}

.arena-banner.is-win {
  background:
    linear-gradient(120deg, rgba(94, 234, 212, 0.3), transparent 42%),
    linear-gradient(135deg, rgba(12, 31, 43, 0.98), rgba(14, 58, 61, 0.88));
  border-color: rgba(94, 234, 212, 0.4);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    0 18px 60px rgba(20, 184, 166, 0.2);
}

.arena-banner.is-win .arena-banner-title {
  color: #a7fff2;
  text-shadow:
    0 0 20px rgba(94, 234, 212, 0.45),
    0 0 48px rgba(94, 234, 212, 0.16);
}

.arena-banner.is-loss {
  background:
    linear-gradient(120deg, rgba(245, 158, 11, 0.28), transparent 40%),
    linear-gradient(135deg, rgba(29, 17, 14, 0.98), rgba(73, 33, 12, 0.88));
  border-color: rgba(245, 158, 11, 0.35);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    0 18px 60px rgba(245, 158, 11, 0.16);
}

.arena-banner.is-loss .arena-banner-title {
  color: #ffe2a8;
  text-shadow:
    0 0 20px rgba(245, 158, 11, 0.35),
    0 0 48px rgba(245, 158, 11, 0.12);
}

.arena-banner.is-draw {
  background:
    linear-gradient(120deg, rgba(148, 163, 184, 0.26), transparent 42%),
    linear-gradient(135deg, rgba(20, 28, 43, 0.98), rgba(44, 57, 84, 0.88));
  border-color: rgba(148, 163, 184, 0.3);
}

.arena-banner.is-draw .arena-banner-title {
  color: #e5edf8;
}

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

.player-card {
  display: grid;
  gap: 6px;
  padding: 16px;
}

.player-card-you strong {
  color: var(--you);
}

.player-card-opponent strong {
  color: var(--opponent);
}

.board-frame {
  position: relative;
  padding: 14px;
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent),
    rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.board-glow {
  position: absolute;
  inset: 16% 14%;
  border-radius: 999px;
  background:
    radial-gradient(circle at 30% 40%, rgba(94, 234, 212, 0.18), transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(245, 158, 11, 0.18), transparent 40%);
  filter: blur(36px);
}

.countdown-overlay {
  --countdown-accent: var(--you);
  position: absolute;
  inset: 28px;
  z-index: 1;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  text-align: center;
  border-radius: 18px;
  border: 1px solid color-mix(in srgb, var(--countdown-accent) 45%, transparent);
  background:
    radial-gradient(circle at 50% 55%, color-mix(in srgb, var(--countdown-accent) 20%, transparent), transparent 45%),
    rgba(5, 12, 23, 0.76);
  box-shadow:
    inset 0 0 40px color-mix(in srgb, var(--countdown-accent) 12%, transparent),
    0 0 48px color-mix(in srgb, var(--countdown-accent) 16%, transparent);
  backdrop-filter: blur(8px);
}

.countdown-overlay[hidden] {
  display: none;
}

.countdown-kicker,
.countdown-copy {
  color: color-mix(in srgb, var(--countdown-accent) 34%, white);
}

.countdown-kicker {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.74rem;
}

.countdown-value {
  font-size: clamp(4rem, 12vw, 6.5rem);
  line-height: 0.9;
  color: var(--countdown-accent);
  text-shadow:
    0 0 18px color-mix(in srgb, var(--countdown-accent) 45%, transparent),
    0 0 42px color-mix(in srgb, var(--countdown-accent) 25%, transparent);
}

canvas {
  position: relative;
  display: block;
  width: min(100%, 900px);
  height: auto;
  margin-inline: auto;
  border-radius: 18px;
  image-rendering: pixelated;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.hint {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.92rem;
}

.pill {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

body.is-over .status {
  color: #ffe4e6;
  background: rgba(251, 113, 133, 0.12);
  border-color: rgba(251, 113, 133, 0.28);
}

@media (max-width: 720px) {
  body {
    padding: 16px;
  }

  .shell {
    padding: 16px;
    border-radius: 22px;
  }

  .join-form,
  .scoreboard {
    grid-template-columns: 1fr;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}