:root {
  /* Brandable theme variables */
  --primary-color: #9be2f5;
  --accent-color: #ffde59;
  --surface: rgba(255,255,255,0.08);
  --surface-2: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.16);
  --chip-glow: 0 0 0 1px rgba(255,255,255,0.18), 0 8px 24px rgba(155,226,245,0.18);
  --btn-glow: 0 8px 20px rgba(0,0,0,0.22);
  --bg-1: #0f2027;
  --bg-2: #203a43;
  --bg-3: #2c5364;
  --accent: var(--accent-color);
  --platform: #8ee3f5;
  --platform-alt: #a0f0c2;
  --fragile: #ff9aa2;
  --player: #ff7aa8;
  --text: #f3fbff;
  --shadow: rgba(0,0,0,0.25);
}
/* Light theme override (opt-in: add body class="theme-light") */
body.theme-light {
  --bg-1: #eaf3f7;
  --bg-2: #cfe7f3;
  --bg-3: #b7d8ea;
  --text: #0d1b22;
  --surface: rgba(0,0,0,0.06);
  --surface-2: rgba(0,0,0,0.04);
  --border: rgba(0,0,0,0.14);
  --chip-glow: 0 0 0 1px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.12);
  --btn-glow: 0 8px 20px rgba(0,0,0,0.12);
}

html, body {
  min-height: 100%;
  margin: 0;
  background: linear-gradient(160deg, var(--bg-1), var(--bg-2) 50%, var(--bg-3));
  font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  /* Allow content below the game to be readable and scrollable */
  overflow-y: auto;
  position: relative;
}
/* Subtle animated gradient/particles overlay */
body::before {
  content: "";
  position: fixed; inset: -10% -10% 0 -10%; pointer-events: none; z-index: 0;
  background: radial-gradient(1200px 800px at 20% -10%, rgba(255, 222, 89, 0.08), transparent 60%),
              radial-gradient(900px 600px at 80% -10%, rgba(255, 122, 168, 0.06), transparent 60%);
  animation: bgShift 24s ease-in-out infinite alternate;
  opacity: 0.9;
}
@keyframes bgShift { to { transform: translateY(8px) scale(1.02); filter: hue-rotate(6deg) saturate(1.02); } }

.wrap {
  /* Keep the game fully visible below the fixed topbar */
  height: 100%;
  display: grid;
  place-items: center;
  padding-top: 72px; /* topbar (58px) + breathing room */
  padding-bottom: 24px;
  box-sizing: border-box;
}

canvas {
  width: min(92vw, 480px);
  height: calc(min(92vw, 480px) * 1.5);
  /* Ensure canvas never hides under the topbar on short viewports */
  max-height: calc(100vh - 120px);
  image-rendering: pixelated;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border-radius: 16px;
  box-shadow: 0 24px 60px var(--shadow), inset 0 0 0 1px rgba(255,255,255,0.08);
  transition: box-shadow .25s ease, transform .25s ease;
}
canvas:focus { outline: none; box-shadow: 0 28px 70px rgba(0,0,0,0.35), 0 0 0 2px rgba(255,255,255,0.12) inset; }

.hud {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  align-items: center;
  opacity: 0.95;
  user-select: none;
  pointer-events: none;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
}
.badge {
  background: var(--surface);
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  pointer-events: auto;
}
.btn {
  cursor: pointer;
  transition: transform 120ms ease, filter 120ms ease;
}
.btn:active { transform: translateY(1px) scale(0.98); }

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  backdrop-filter: blur(6px) saturate(110%);
  -webkit-backdrop-filter: blur(6px) saturate(110%);
  background: linear-gradient(160deg, rgba(15,32,39,0.35), rgba(32,58,67,0.35));
  z-index: 20; /* above leaderboard/topbar on mobile */
}
.card {
  width: min(92vw, 440px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 40px var(--shadow);
  text-align: center;
  transition: transform .2s ease, box-shadow .3s ease;
}
.card:hover { transform: translateY(-1px); box-shadow: 0 16px 48px rgba(0,0,0,0.3); }
.title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin: 6px 0 14px;
}
.muted { opacity: 0.8; }
.cta {
  margin-top: 14px;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.primary, .secondary {
  border: none;
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  color: #0d1b22;
  transition: transform .15s ease, filter .2s ease, box-shadow .2s ease;
}
.primary {
  background: linear-gradient(180deg, var(--accent-color), #ffbb00);
  box-shadow: 0 6px 16px rgba(255, 187, 0, 0.35);
}
.secondary {
  background: linear-gradient(180deg, var(--primary-color), #5bd1f4);
  box-shadow: 0 6px 16px rgba(91, 209, 244, 0.35);
}
.primary:hover, .secondary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.primary:active, .secondary:active { transform: translateY(1px) scale(0.98); }

.controls {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 20px;
  z-index: 5;
  user-select: none;
}
.ctrl-btn {
  width: 64px; height: 64px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.12);
  color: var(--text);
  display: grid; place-items: center;
  font-size: 22px;
  box-shadow: 0 6px 18px var(--shadow);
  backdrop-filter: blur(6px);
  -webkit-tap-highlight-color: transparent;
}
.ctrl-btn:active { transform: translateY(1px) scale(0.98); }

@media (min-height: 780px) {
  .controls { bottom: 24px; }
}
.corner-score {
  position: fixed;
  top: 10px;
  right: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  padding: 8px 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
  pointer-events: none;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
}
/* Enhancements for title and bigger scores */
.game-title {
  position: fixed;
  top: 10px;
  left: 10px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 12px;
  padding: 8px 12px;
  font-weight: 900;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
  pointer-events: none;
}
.badge { font-size: 16px; font-weight: 800; }
.corner-score { font-size: 26px; font-weight: 900; }
/* Hide legacy HUD elements when new topbar is present */
/* Content area under the game */
/* Content below the game — smaller, tidier */
main#content { max-width: 760px; margin: 24px auto 56px; padding: 0 16px; line-height: 1.7; font-size: 15px; }
main#content h1 { font-size: 26px; margin: 0 0 10px; }
main#content h2 { font-size: 18px; margin: 18px 0 8px; }
main#content p { opacity: 0.9; }
main#content ul { margin: 8px 0 0; padding-left: 20px; }
.info-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; box-shadow: 0 8px 22px var(--shadow); }
.meta-list { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 10px; }
.meta-list div { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.spacer { height: 16px; }
.ad-spacer { margin: 18px 0; display: block; }
.hud, .game-title, .corner-score { display: none !important; }

/* Modern Topbar */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; height: 58px;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px;
  padding: 0 14px; z-index: 9;
  background: linear-gradient(180deg, rgba(15,32,39,0.85), rgba(32,58,67,0.55));
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
  color: var(--text);
  user-select: none;
}
.topbar .left, .topbar .center, .topbar .right { display: flex; align-items: center; min-width: 0; }
.topbar .left { gap: 8px; }
.brand { display:flex; align-items:center; gap:8px;
  font-weight: 900; letter-spacing: .4px;
  padding: 6px 10px; border-radius: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12);
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
  pointer-events: none;
}
.brand span { font-family: 'Orbitron', 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial; }
.brand-logo { width: 28px; height: 28px; object-fit: cover; border-radius: 50%;
  /* Crop out any outer white by clipping to the inner circle */
  clip-path: circle(48% at 50% 50%);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.18), 0 4px 12px rgba(0,0,0,0.25);
  pointer-events: none; flex: 0 0 28px;
}
.center { gap: 10px; }
.chip {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 4px 14px rgba(0,0,0,0.18);
  font-weight: 800;
  white-space: nowrap;
  animation: hudPulse 3.2s ease-in-out infinite;
}
@keyframes hudPulse { 0%,100%{ box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 4px 14px rgba(0,0,0,0.18);} 50%{ box-shadow: var(--chip-glow);} }
.right { justify-content: flex-end; gap: 10px; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text); display: grid; place-items: center;
  cursor: pointer; pointer-events: auto;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.10), var(--btn-glow);
  transition: transform 120ms ease, filter 120ms ease, box-shadow 120ms ease;
}
.icon-btn:hover { box-shadow: 0 0 0 1px rgba(255,255,255,0.18), 0 10px 24px rgba(0,0,0,0.28); }
.icon-btn:active { transform: translateY(1px) scale(0.98); }
.icon-btn svg { width: 18px; height: 18px; display: block; }
.score-bubble {
  min-width: 42px; text-align: center; padding: 8px 12px; border-radius: 12px; font-weight: 900;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 6px 18px rgba(0,0,0,0.22);
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
  pointer-events: none;
}

/* Neon Glass variation (optional): add class="neon" on <body> */
body.neon .chip {
  background: linear-gradient(90deg, rgba(155,226,245,0.25), rgba(255,122,168,0.25));
  box-shadow: 0 0 0 1px rgba(255,255,255,0.18), 0 8px 24px rgba(155,226,245,0.18);
}
body.neon .icon-btn {
  background: linear-gradient(180deg, rgba(255,255,255,0.16), rgba(255,255,255,0.06));
  border-color: rgba(255,255,255,0.24);
}

/* Leaderboard styles */
.leaderboard-card { position: fixed; top: 72px; right: 12px; width: 320px; max-height: 64vh; z-index: 12;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 10px 32px var(--shadow); overflow: hidden;
  transition: transform .22s ease, opacity .22s ease, visibility 0s linear .22s; will-change: transform, opacity;
  opacity: 1; visibility: visible; transform: translateY(0) scale(1);
}
.leaderboard-card.hidden {
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(-6px) scale(0.98);
  transition: transform .22s ease, opacity .22s ease, visibility 0s linear .22s;
}
.lb-header { display:flex; align-items:center; justify-content:space-between; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.lb-title { font-weight: 900; letter-spacing: .3px; }
.lb-actions { display:flex; gap:8px; }
.lb-btn { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); display: grid; place-items: center; cursor: pointer; }
.lb-list { list-style:none; margin:0; padding:8px 10px; display:flex; flex-direction:column; gap:8px; }
.lb-row { display:grid; grid-template-columns:auto 1fr auto; gap:10px; align-items:center; padding:8px 10px; border-radius:10px; border:1px solid var(--border); background: var(--surface-2); box-shadow: inset 0 1px 0 rgba(255,255,255,0.10), 0 6px 18px rgba(0,0,0,0.18); animation: lbPulse 2.6s ease-in-out infinite; }
.lb-rank { font-weight: 800; opacity: .9; }
.lb-id { font-weight: 700; letter-spacing: .2px; opacity: .9; }
.lb-score { font-weight: 900; padding: 4px 8px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); }
.lb-footer { padding: 6px 12px 10px; font-size: 12px; opacity: .8; text-align: center; }
.lb-row.gold   { box-shadow: 0 0 0 1px rgba(255,215,0,0.25), 0 8px 24px rgba(255,215,0,0.18); }
.lb-row.silver { box-shadow: 0 0 0 1px rgba(192,192,192,0.25), 0 8px 24px rgba(192,192,192,0.18); }
.lb-row.bronze { box-shadow: 0 0 0 1px rgba(205,127,50,0.25), 0 8px 24px rgba(205,127,50,0.18); }
@keyframes lbPulse { 0%,100% { box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 4px 14px rgba(0,0,0,0.18); } 50% { box-shadow: var(--chip-glow); } }

@media (max-width: 600px) {
  .leaderboard-card {
    top: auto; bottom: 12px; right: 50%; transform: translate(50%, 12px);
    width: min(92vw, 420px); max-height: 50vh;
  }
  .leaderboard-card.hidden { opacity: 0; visibility: hidden; pointer-events: none; transform: translate(50%, 24px) scale(0.98); }
}

/* Safe-area and dynamic viewport adjustments for mobile */
:root {
  --topbar-h: 58px;
  /* This is updated by JS to the actual measured topbar height.
     We keep wrap padding as topbar height + breathing room. */
  --wrap-pt: calc(var(--topbar-h) + 14px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}
.topbar {
  padding-top: env(safe-area-inset-top, 0px);
  height: auto; /* allow the bar to grow to two rows on narrow screens */
}
.wrap { padding-top: var(--wrap-pt); }
canvas { max-height: calc(100dvh - var(--wrap-pt) - 24px - var(--safe-bottom)); }
@supports not (height: 100dvh) {
  canvas { max-height: calc(100vh - var(--wrap-pt) - 24px - var(--safe-bottom)); }
}

/* Compact topbar on narrow phones */
@media (max-width: 480px) {
  :root { --topbar-h: 52px; }
  .brand { padding: 4px 8px; }
  .icon-btn { width: 34px; height: 34px; }
  .chip { padding: 6px 12px; }
}

/* Topbar responsive clean-up to prevent overlap on phones */
@media (max-width: 540px) {
  /* Two-row topbar: brand + actions on row 1, chips centered on row 2 */
  .topbar {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas: "left right" "center center";
    row-gap: 8px;
    padding: 0 10px;
  }
  .topbar .left { grid-area: left; }
  .topbar .center { grid-area: center; justify-content: center; }
  .topbar .right { grid-area: right; justify-content: flex-end; gap: 8px; }
  .center .chip { padding: 6px 10px; font-size: 13.5px; }
  /* Avoid duplicate score when center chips show */
  .score-bubble { display: none; }
}

@media (max-width: 420px) {
  /* Keep two-row layout; tighten brand label */
  .brand { padding: 4px 6px; }
  .brand span { display: none; }
  .topbar { gap: 8px; }
  .icon-btn { width: 32px; height: 32px; }
  /* Still prefer center chip; keep bubble hidden to reduce clutter */
  .score-bubble { display: none; }
  .topbar { padding: 0 8px; }
}

@media (max-width: 360px) {
  .icon-btn { width: 30px; height: 30px; }
  .right { gap: 6px; }
  :root { --topbar-h: 50px; }
}