:root {
  --cream: #f6ead0;
  --cream-deep: #e9d6b4;
  --brown: #5a3a24;
  --brown-dark: #3b2618;
  --sand: #d8b184;
  --blue: #3f9fe6;
  --ink: #2b1c13;
  --panel: rgba(250, 240, 220, 0.94);
  --shadow: 0 18px 40px rgba(43, 28, 19, 0.28);
  --font: "Trebuchet MS", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  margin: 0;
  background: radial-gradient(circle at 50% 30%, #f6e3bd, #d9b184 55%, #a97c56);
  font-family: var(--font);
  color: var(--ink);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

.stage {
  position: fixed;
  inset: 0;
  height: 100%;
  height: 100dvh;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  overflow: hidden;
}

canvas#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: pointer;
}

.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 120px rgba(60, 38, 22, 0.18);
}

.hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: max(18px, env(safe-area-inset-top)) max(clamp(14px, 3vw, 32px), env(safe-area-inset-right)) 0 max(clamp(14px, 3vw, 32px), env(safe-area-inset-left));
  pointer-events: none;
  z-index: 5;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-name {
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--brown-dark);
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.25);
}

.sky-phase {
  margin-top: 8px;
  color: var(--brown-dark);
  font: 700 10px/1 var(--mono);
  letter-spacing: 0.16em;
  pointer-events: auto;
  cursor: help;
}

.difficulty {
  margin-top: 6px;
  color: var(--brown-dark);
  font: 700 10px/1 var(--mono);
  letter-spacing: 0.08em;
}

.night .hud .brand-name,
.night .hud .score-value,
.night .sky-phase,
.night .difficulty {
  color: var(--cream);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.night .hud .score-label { color: #c8bfd6; }

.scoreboard {
  display: flex;
  gap: clamp(14px, 3vw, 28px);
  align-items: flex-start;
}

.score-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.score-label {
  font-size: 10px;
  letter-spacing: 0.22em;
  color: rgba(59, 38, 24, 0.6);
}

.score-value {
  display: inline-block;
  font-family: var(--mono);
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--brown-dark);
}

.score-value.flash {
  animation: scoreFlash 0.45s ease-out;
}

@keyframes scoreFlash {
  0% { transform: scale(1); color: var(--blue); }
  40% { transform: scale(1.18); color: #1c6fb6; }
  100% { transform: scale(1); }
}

.hud-actions {
  display: flex;
  gap: 8px;
}

.sound-toggle,
.pause-toggle {
  pointer-events: auto;
  border: 1px solid rgba(59, 38, 24, 0.25);
  background: rgba(250, 240, 220, 0.7);
  color: var(--brown-dark);
  font: 700 10px/1 var(--font);
  letter-spacing: 0.16em;
  padding: 9px 12px;
  min-height: 44px;
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(6px);
}

.sound-toggle:hover,
.pause-toggle:hover { background: rgba(250, 240, 220, 0.95); }

.pause-toggle:disabled { opacity: 0.55; cursor: default; }

button { touch-action: none; }

button:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  z-index: 10;
  pointer-events: none;
  background: radial-gradient(circle at 50% 45%, rgba(43, 28, 19, 0.18), rgba(43, 28, 19, 0.42));
  animation: fadeIn 0.25s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.panel {
  pointer-events: auto;
  width: min(540px, 100%);
  background: var(--panel);
  border: 1px solid rgba(59, 38, 24, 0.18);
  border-radius: 24px;
  padding: clamp(22px, 4vw, 34px);
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(10px);
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(59, 38, 24, 0.6);
}

h1, h2 {
  margin: 0 0 10px;
  font-size: clamp(34px, 7vw, 52px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--brown-dark);
}

h1 {
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h2 { font-size: clamp(28px, 5vw, 40px); }

.lede {
  margin: 0 0 18px;
  font-size: clamp(13px, 1.6vw, 15px);
  line-height: 1.55;
  color: rgba(43, 28, 19, 0.8);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 14px;
  margin: 0 0 18px;
  font-size: 12px;
  color: rgba(43, 28, 19, 0.75);
}

.touch-instructions {
  display: none;
  margin: 0 0 16px;
  font-size: 12px;
  line-height: 1.5;
  color: rgba(43, 28, 19, 0.8);
}

.has-touch .touch-instructions { display: block; }
.has-touch .controls { margin-bottom: 10px; }

kbd {
  display: inline-block;
  padding: 3px 7px;
  border-radius: 6px;
  background: #fffaf0;
  border: 1px solid rgba(59, 38, 24, 0.25);
  box-shadow: 0 1px 0 rgba(59, 38, 24, 0.2);
  font: 600 11px/1.2 var(--mono);
}

.btn {
  border: none;
  cursor: pointer;
}

.btn.primary {
  background: var(--brown);
  color: var(--cream);
  padding: 13px 24px;
  border-radius: 999px;
  font: 800 13px/1 var(--font);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  box-shadow: 0 6px 0 var(--brown-dark);
  transition: transform 0.12s, box-shadow 0.12s;
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 7px 0 var(--brown-dark);
}

.btn.primary:active {
  transform: translateY(3px);
  box-shadow: 0 3px 0 var(--brown-dark);
}

.hint {
  margin: 14px 0 0;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(43, 28, 19, 0.55);
}

.result {
  display: flex;
  justify-content: center;
  gap: 28px;
  margin: 14px 0 6px;
}

.result div {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.result span:last-child {
  font: 700 26px/1 var(--mono);
  color: var(--brown-dark);
}

.new-best {
  margin: 6px 0 0;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.hidden { display: none !important; }

.touch-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: max(14px, env(safe-area-inset-bottom));
  display: none;
  justify-content: space-between;
  gap: 20px;
  padding: 0 max(18px, env(safe-area-inset-right)) 0 max(18px, env(safe-area-inset-left));
  z-index: 6;
  pointer-events: none;
}

.touch-btn {
  pointer-events: auto;
  width: clamp(104px, 24vw, 156px);
  height: clamp(64px, 12vh, 80px);
  border-radius: 18px;
  border: 1px solid rgba(59, 38, 24, 0.25);
  background: rgba(250, 240, 220, 0.82);
  color: var(--brown-dark);
  font: 800 14px/1 var(--font);
  letter-spacing: 0.14em;
  box-shadow: 0 4px 0 rgba(59, 38, 24, 0.25);
  cursor: pointer;
}

.touch-btn span {
  display: block;
  margin-top: 7px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.touch-btn:active,
.touch-btn.is-held {
  transform: translateY(3px);
  box-shadow: 0 1px 0 rgba(59, 38, 24, 0.25);
}

.has-touch .touch-controls { display: flex; }

@media (any-pointer: coarse) {
  .touch-controls { display: flex; }
}

@media (max-width: 560px) {
  .hud {
    gap: 8px;
    padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 0 max(12px, env(safe-area-inset-left));
  }
  .brand-name { font-size: 18px; letter-spacing: 0.12em; }
  .scoreboard { gap: 10px; margin-left: auto; }
  .score-value { font-size: 18px; }
  .score-label { font-size: 9px; letter-spacing: 0.14em; }
  .hud-actions { flex-direction: column; gap: 6px; }
  .sound-toggle, .pause-toggle { padding: 8px; font-size: 9px; letter-spacing: 0.1em; }
  .panel { border-radius: 20px; }
}

@media (max-height: 480px) {
  .overlay { padding-top: max(10px, env(safe-area-inset-top)); padding-bottom: max(10px, env(safe-area-inset-bottom)); }
  .panel { padding: 14px 20px; }
  .eyebrow { margin-bottom: 4px; font-size: 10px; }
  h1 { font-size: 32px; margin-bottom: 8px; }
  h2 { font-size: 28px; }
  .lede { margin-bottom: 10px; line-height: 1.35; }
  .controls { margin-bottom: 10px; gap: 5px 10px; font-size: 11px; }
  .touch-instructions { margin-bottom: 10px; font-size: 11px; line-height: 1.35; }
  .hint { margin-top: 10px; }
}