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

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: #000;
  color: #e8eeff;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "SF Pro Display", "Avenir Next", "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-user-select: none;
  user-select: none;
}

canvas { display: block; position: fixed; inset: 0; }

#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}

#topbar {
  position: absolute;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

#title {
  font-weight: 800;
  font-size: clamp(22px, 2.6vw, 36px);
  letter-spacing: 10px;
  color: #e8eeff;
  text-shadow: 0 0 18px rgba(111, 220, 255, 0.95), 0 0 36px rgba(111, 220, 255, 0.45);
  padding: 2px 14px 0;
  white-space: nowrap;
}

#subtitle {
  font-size: clamp(11px, 1vw, 14px);
  letter-spacing: 3px;
  color: #98a2c0;
  text-transform: uppercase;
  margin-top: 2px;
}

#score {
  padding: 8px 24px;
  background: rgba(10, 14, 28, 0.72);
  border: 2px solid rgba(111, 220, 255, 0.75);
  border-radius: 999px;
  font-weight: 700;
  font-size: clamp(15px, 1.5vw, 20px);
  letter-spacing: 3px;
  color: #e8eeff;
  text-shadow: 0 0 14px rgba(111, 220, 255, 0.7);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  white-space: nowrap;
  display: flex;
  gap: 14px;
  align-items: center;
}
#score .p { color: #ffde2e; text-shadow: 0 0 14px #ffde2e; }
#score .a { color: #ff4d4d; text-shadow: 0 0 14px #ff4d4d; }
#score .sep { color: #6fdcff; opacity: 0.7; }
#score #score-p, #score #score-a {
  display: inline-block;
  min-width: 1.6ch;
  text-align: center;
  font-size: 1.15em;
}

#tip {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(11px, 1vw, 14px);
  letter-spacing: 2px;
  color: #98a2c0;
  text-transform: uppercase;
}

#tip #gh-link {
  color: inherit;
  text-decoration: none;
  pointer-events: auto;
  transition: color 0.15s ease, text-shadow 0.15s ease;
}
#tip #gh-link:hover {
  color: #6fdcff;
  text-shadow: 0 0 10px rgba(111, 220, 255, 0.7);
}

#message {
  position: absolute;
  bottom: 56px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  padding: 16px 32px;
  background: rgba(10, 14, 28, 0.85);
  border: 2px solid rgba(111, 220, 255, 0.7);
  border-radius: 18px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: 0 0 50px rgba(111, 220, 255, 0.24), inset 0 0 24px rgba(111, 220, 255, 0.07);
  min-width: min(360px, 88vw);
  transition: opacity 0.22s ease;
}
#message.hidden { opacity: 0; pointer-events: none; transform: translateX(-50%) scale(0.97); }

#message h1 {
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 800;
  letter-spacing: 6px;
  text-shadow: 0 0 18px rgba(111, 220, 255, 0.9);
  color: #ffffff;
  margin-bottom: 6px;
}
#message h1.yellow { text-shadow: 0 0 18px #ffde2e, 0 0 36px rgba(255, 222, 46, 0.5); color: #fff1a0; }
#message h1.red { text-shadow: 0 0 18px #ff4d4d, 0 0 36px rgba(255, 77, 77, 0.5); }

#message h2 {
  font-size: clamp(12px, 1.3vw, 16px);
  font-weight: 500;
  letter-spacing: 2px;
  color: #d0daff;
  margin-bottom: 4px;
}

#message p {
  font-size: clamp(10px, 0.9vw, 12px);
  letter-spacing: 2px;
  color: #98a2c0;
  text-transform: uppercase;
}