:root {
  --bg: #05070d;
  --panel: rgba(8, 14, 28, 0.92);
  --border: rgba(62, 224, 200, 0.35);
  --primary: #3ee0c8;
  --accent: #7aa2ff;
  --danger: #ff5c7a;
  --text: #e8f1ff;
  --muted: #8a9bb8;
  --font-display: "Oxanium", system-ui, sans-serif;
  --font-ui: "Rajdhani", system-ui, sans-serif;
}

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

html,
body {
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 50% 20%, #0c1428 0%, var(--bg) 70%);
  color: var(--text);
  font-family: var(--font-ui);
  overflow: hidden;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
}

#game {
  display: block;
  width: min(100vw, calc(100vh * 480 / 720));
  height: min(100vh, calc(100vw * 720 / 480));
  max-width: 480px;
  max-height: 720px;
  background: #02040a;
  border-radius: 12px;
  box-shadow: 0 0 0 1px var(--border), 0 20px 60px rgba(0, 0, 0, 0.55);
  cursor: crosshair;
  touch-action: none;
}

#hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  justify-content: space-between;
  padding: 14px 16px;
  font-family: var(--font-display);
  max-width: 480px;
  max-height: 720px;
  width: min(100vw, calc(100vh * 480 / 720));
  height: min(100vh, calc(100vw * 720 / 480));
  margin: auto;
}

#hud.hidden {
  display: none;
}

.hud-left,
.hud-right {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hud-right {
  align-items: flex-end;
}

.hud-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

#score,
#wave,
#lives {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
  text-shadow: 0 0 12px rgba(62, 224, 200, 0.35);
}

#lives {
  color: var(--primary);
  letter-spacing: 0.08em;
}

#power-pills {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  min-height: 22px;
}

.pill {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(12, 24, 40, 0.8);
}

.pill.multi {
  color: #ffd56a;
  border-color: rgba(255, 213, 106, 0.5);
}
.pill.shield {
  color: #7ad7ff;
  border-color: rgba(122, 215, 255, 0.5);
}
.pill.speed {
  color: #b6ff7a;
  border-color: rgba(182, 255, 122, 0.5);
}

#btn-pause {
  pointer-events: auto;
  position: absolute;
  right: 14px;
  bottom: 16px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(8, 14, 28, 0.85);
  color: var(--primary);
  font-size: 14px;
  cursor: pointer;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(2, 4, 10, 0.55);
  backdrop-filter: blur(4px);
  max-width: 480px;
  max-height: 720px;
  width: min(100vw, calc(100vh * 480 / 720));
  height: min(100vh, calc(100vw * 720 / 480));
  margin: auto;
  border-radius: 12px;
}

.overlay.hidden {
  display: none;
}

.panel {
  width: min(92%, 340px);
  padding: 28px 24px 24px;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: 0 0 40px rgba(62, 224, 200, 0.08);
  text-align: center;
}

.panel.hidden {
  display: none;
}

.eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-bottom: 8px;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 9vw, 42px);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--primary);
  text-shadow: 0 0 24px rgba(62, 224, 200, 0.45);
  margin-bottom: 8px;
}

h2 {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  color: var(--primary);
}

.tagline {
  color: var(--muted);
  margin-bottom: 18px;
  font-size: 15px;
}

.controls-hint {
  list-style: none;
  text-align: left;
  margin: 0 auto 22px;
  padding: 12px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

kbd {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(62, 224, 200, 0.35);
  background: rgba(62, 224, 200, 0.08);
  color: var(--primary);
  font-size: 12px;
  font-family: var(--font-display);
}

.btn {
  display: block;
  width: 100%;
  margin-top: 10px;
  padding: 12px 16px;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease, border-color 0.12s ease;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.1);
}

.btn.primary {
  background: linear-gradient(180deg, #4aecd4 0%, #2bb8a4 100%);
  color: #04141a;
  border-color: transparent;
}

.btn.primary:hover {
  background: linear-gradient(180deg, #67f3de 0%, #35c9b4 100%);
}

.btn.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}

.final-score {
  font-family: var(--font-display);
  font-size: 28px;
  margin-bottom: 8px;
}

.new-record {
  color: #ffd56a;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.new-record.hidden {
  display: none;
}

.name-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px 0 4px;
  font-size: 14px;
  color: var(--muted);
}

.name-row input {
  flex: 1;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  outline: none;
}

#score-list {
  list-style: none;
  text-align: left;
  margin: 0 0 16px;
  max-height: 280px;
  overflow: auto;
}

#score-list li {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 8px;
  padding: 8px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-display);
  font-size: 15px;
}

#score-list li span.rank {
  color: var(--muted);
}

#score-list li span.pts {
  color: var(--primary);
}