:root {
  --bg-gradient: radial-gradient(
    circle at top,
    #FFF6C3 0%,
    #FDE68A 55%,
    #FACC15 100%
  );
  --text-primary: #78350F;
  --text-secondary: rgba(120, 53, 15, 0.78);
  --ring-track: #E5E7EB;
  --ring-progress: #D97706;
  --surface-bg: rgba(255, 255, 255, 0.72);
  --surface-border: rgba(120, 53, 15, 0.24);
}

.dark {
  --bg-gradient: radial-gradient(
    circle at top,
    #2B241E 0%,
    #1E1915 55%,
    #141210 100%
  );
  --text-primary: #F5E9C8;
  --text-secondary: rgba(245, 233, 200, 0.82);
  --ring-track: rgba(245, 233, 200, 0.4);
  --ring-progress: #F59E0B;
  --surface-bg: rgba(28, 24, 21, 0.87);
  --surface-border: rgba(245, 233, 200, 0.3);
}

body {
  background: var(--bg-gradient);
  color: var(--text-primary);
  transition: background 0.4s ease, color 0.3s ease;
  touch-action: manipulation;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  z-index: 70;
  background: #111827;
  color: #f9fafb;
  padding: 0.55rem 0.75rem;
  border-radius: 0.45rem;
}

.skip-link:focus {
  left: 0.75rem;
}

#appShell {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

#tapArea {
  flex: 1;
  display: grid;
  place-items: center;
  min-height: clamp(20rem, 58vh, 32rem);
}

.tap-button {
  border-radius: 9999px;
}

.tap-button[aria-disabled='true'] {
  opacity: 0.55;
}

.tap-button:focus-visible {
  outline: 3px solid var(--ring-progress);
  outline-offset: 8px;
}

svg circle {
  transition: stroke 0.3s ease;
}

.dark svg circle:last-child {
  filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.35));
}

#controls {
  min-height: clamp(17rem, 38vh, 22rem);
  background: var(--surface-bg);
  border-top: 1px solid var(--surface-border);
  box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(10px);
}

select,
button {
  background-color: transparent;
  color: inherit;
  border-color: var(--surface-border);
}

select {
  padding: 0.6rem;
  background-color: var(--surface-bg);
}

select option,
select optgroup {
  background-color: #FFF6C3;
  color: #78350F;
}

.dark select option,
.dark select optgroup {
  background-color: #1E1915;
  color: #F5E9C8;
}

button {
  padding: 0.6rem;
}

select:focus-visible,
button:focus-visible,
.guide-close:focus-visible,
.guide-checkbox input:focus-visible {
  outline: 2px solid var(--ring-progress);
  outline-offset: 2px;
  border-color: var(--ring-progress);
}

select:disabled,
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.bg-wood {
  background-color: #92400e;
}

.guide-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  padding: 1rem;
  background: rgba(20, 18, 16, 0.55);
  display: grid;
  place-items: center;
}

.guide-card {
  width: min(760px, 100%);
  max-height: 88vh;
  overflow: auto;
  border: 1px solid var(--surface-border);
  border-radius: 1rem;
  background: var(--surface-bg);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
  padding: 1.25rem;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
}

.guide-close {
  border: 1px solid var(--surface-border);
  border-radius: 0.45rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.75rem;
}

.guide-section p {
  line-height: 1.45;
}

.guide-checkbox {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  opacity: 0.95;
}

.guide-checkbox input {
  accent-color: #92400e;
}

.noscript-note {
  margin: 1rem;
  padding: 0.75rem;
  border-radius: 0.5rem;
  background: #111827;
  color: #f9fafb;
}

.sr-only {
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  white-space: nowrap;
}

.text-secondary {
  color: var(--text-secondary);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}