Times-Table-Invaders/style.css

:root {
  --bg-top: #0b1026;
  --bg-bottom: #171d42;
  --panel: #1c2347;
  --panel-border: #39457f;
  --text: #eef1ff;
  --muted: #9aa3d1;
  --accent: #5eead4;
  --fire: #ff6b4a;
  --chrome-reserve: 140px;
  --scene-w: min(100%, calc((100vh - var(--chrome-reserve)) * 0.75));
  --radius: 16px;
}

@supports (height: 100dvh) {
  :root {
    --scene-w: min(100%, calc((100dvh - var(--chrome-reserve)) * 0.75));
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: "Comic Sans MS", "Chalkboard SE", "Marker Felt", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(var(--bg-top), var(--bg-bottom));
}

#app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 12px;
}

#scene-wrap {
  position: relative;
  width: var(--scene-w);
  aspect-ratio: 3 / 4;
  border-radius: var(--radius);
  overflow: hidden;
  background: #0a0f2c;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

#scene {
  display: block;
  width: 100%;
  height: 100%;
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: rgba(8, 11, 32, 0.85);
}

.overlay-card {
  width: min(100%, 420px);
  max-height: 100%;
  overflow-y: auto;
  background: var(--panel);
  border: 2px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 20px 18px;
  text-align: center;
}

.hidden {
  display: none !important;
}

.game-title {
  margin: 0 0 4px;
  font-size: clamp(1.5rem, 6vw, 2.2rem);
  color: var(--accent);
  letter-spacing: 0.5px;
}

.game-title.small {
  font-size: clamp(1.3rem, 5vw, 1.8rem);
}

.tagline {
  margin: 0 0 12px;
  color: var(--muted);
}

.instructions {
  margin: 0 auto 14px;
  padding-left: 20px;
  text-align: left;
  font-size: 0.95rem;
  line-height: 1.5;
}

.leaderboard-block {
  margin: 0 auto 16px;
}

.leaderboard-block h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.leaderboard th,
.leaderboard td {
  padding: 4px 8px;
  border-bottom: 1px solid var(--panel-border);
}

.leaderboard th {
  color: var(--muted);
  font-weight: normal;
}

.leaderboard tr:last-child td {
  border-bottom: none;
}

.empty-note {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font: inherit;
  font-weight: bold;
  color: #fff;
  background: var(--panel-border);
  min-height: 44px;
  padding: 10px 22px;
  border-radius: 999px;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.35);
  touch-action: manipulation;
  transition: transform 0.05s ease, filter 0.15s ease;
}

.btn:not(:disabled):hover {
  filter: brightness(1.12);
}

.btn:not(:disabled):active,
.btn-pressed {
  transform: translateY(2px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
}

.btn-primary {
  background: var(--accent);
  color: #08241f;
}

.btn-fire {
  background: var(--fire);
}

.btn-mute {
  display: flex;
  align-items: center;
  justify-content: center;
  justify-self: start;
  width: 44px;
  height: 44px;
  padding: 0;
  background: rgba(255, 255, 255, 0.08);
}

#mute-btn .mute-x {
  display: none;
}

#mute-btn.muted .mute-x {
  display: block;
}

#mute-btn.muted .mute-waves {
  display: none;
}

#hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 10px;
  width: var(--scene-w);
}

.hud-center {
  display: flex;
  justify-content: center;
  gap: 10px;
}

#answer {
  font: inherit;
  font-size: 1.4rem;
  font-weight: bold;
  text-align: center;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid var(--panel-border);
  border-radius: 12px;
  min-height: 44px;
  width: 6ch;
  padding: 8px 10px;
  outline: none;
  touch-action: manipulation;
}

#answer:focus {
  border-color: var(--accent);
}

#answer:disabled,
.btn:disabled {
  opacity: 0.55;
}

#score {
  justify-self: end;
  font-size: 1.3rem;
  font-weight: bold;
  text-align: center;
  min-width: 3.5ch;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid var(--panel-border);
  border-radius: 999px;
}

.final-score {
  margin: 8px 0 16px;
  font-size: 1.2rem;
}

#top3-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.congrats {
  margin: 0;
  font-weight: bold;
  color: var(--accent);
}

#player-name {
  font: inherit;
  min-height: 44px;
  padding: 8px 12px;
  text-align: center;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid var(--panel-border);
  border-radius: 12px;
  outline: none;
}

#player-name:focus {
  border-color: var(--accent);
}