/* Flappy Kiro layout: an 800x600 logical stage scaled to fit the window (FR-11). */
:root {
  --letterbox: #1b2733;
  --panel: rgba(255, 255, 255, 0.9);
  --ink: #1f3b4d;
  --green: #39a33a;
  --green-dark: #1f6e24;
  --danger: #c0392b;
  --focus: #ffd54f;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--letterbox);
  overscroll-behavior: none;
}

#stage {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 800px;
  height: 600px;
  transform: translate(-50%, -50%);
  transform-origin: center;
  overflow: hidden;
  /* Mobile: no zoom, scroll, selection or long-press menu from taps (FR-11.5). */
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}

#game-canvas {
  display: block;
  width: 800px;
  height: 600px;
}

.overlay {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 50px; /* keep the score bar visible */
  display: flex;
  align-items: center;
  justify-content: center;
}

.overlay[hidden],
.menu[hidden],
[hidden] {
  display: none !important;
}

.panel {
  min-width: 320px;
  max-width: 560px;
  padding: 20px 28px;
  border-radius: 18px;
  background: var(--panel);
  color: var(--ink);
  text-align: center;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

h1 {
  margin: 0 0 8px;
  font-size: 44px;
  color: var(--green-dark);
}

h2 {
  margin: 0 0 10px;
  font-size: 32px;
}

.prompt {
  margin: 8px 0;
  font-size: 18px;
  font-weight: 600;
}

.stat {
  margin: 6px 0;
  font-size: 18px;
}

.stat.big {
  font-size: 28px;
  font-weight: 700;
}

.badge {
  display: inline-block;
  margin: 4px 0;
  padding: 4px 12px;
  border-radius: 999px;
  background: #ffe082;
  font-weight: 700;
}

.controls {
  margin: 10px 0;
  font-size: 13px;
  opacity: 0.8;
}

.row {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}

button {
  font: inherit;
  font-size: 18px;
  font-weight: 600;
  padding: 8px 18px;
  border: 2px solid var(--green-dark);
  border-radius: 10px;
  background: var(--green);
  color: #fff;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.08);
}

button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

button.danger {
  background: var(--danger);
  border-color: #8e2a20;
}

.hud {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 8px;
}

.icon-button {
  width: 44px;
  height: 44px;
  padding: 0;
  font-size: 20px;
  background: rgba(31, 59, 77, 0.55);
  border-color: rgba(255, 255, 255, 0.6);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}