:root {
  --bg: #060713;
  --glass: rgba(12, 16, 34, 0.50);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f5f7ff;
  --accent: #8b5cf6;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.50);
  --radius: 28px;
}

[data-theme="light"] {
  --bg: #f8faff;
  --glass: rgba(255, 255, 255, 0.70);
  --border: rgba(18, 22, 38, 0.10);
  --text: #111827;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, sans-serif;
  color: var(--text);
  background: 
    radial-gradient(circle at 20% 30%, rgba(139,92,246,0.20), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(34,211,238,0.18), transparent 40%),
    linear-gradient(180deg, var(--bg), #02040a);
  overflow-x: hidden;
}

#confetti {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
}

.app {
  max-width: 500px;
  margin: 0 auto;
  padding: 24px;
}

.glass {
  background: var(--glass);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  margin-bottom: 32px;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 6vw, 2.4rem);
  font-weight: 900;
  background: linear-gradient(135deg, #22d3ee, #8b5cf6, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#themeToggle {
  width: 48px;
  height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  color: var(--text);
  font-size: 1.3rem;
}

.prompt-display {
  min-height: 240px;
  padding: 40px 32px;
  text-align: center;
  margin-bottom: 32px;
  display: grid;
  place-items: center;
}

.prompt {
  font-size: clamp(1.4rem, 8vw, 2.4rem);
  font-weight: 700;
  line-height: 1.1;
  max-width: 90%;
  margin: 0 auto;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.big-button {
  height: 64px;
  font-size: 1.3rem;
  font-weight: 700;
  border: none;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent), #22d3ee);
  color: #07111f;
  box-shadow: 0 20px 40px rgba(139, 92, 246, 0.30);
  transition: transform 0.2s ease;
}

.big-button:hover,
.big-button:focus-visible {
  transform: translateY(-2px);
}

.sub-controls {
  display: flex;
  gap: 12px;
}

.sub-controls button {
  flex: 1;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-weight: 600;
}

.stats {
  padding: 16px 24px;
  text-align: center;
  font-size: 0.95rem;
  color: var(--muted);
}

footer {
  margin-top: 48px;
  padding: 20px 24px;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.8;
}

:focus-visible {
  outline: 3px solid rgba(34,211,238,0.95);
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .app {
    padding: 16px;
  }
  
  .prompt-display {
    min-height: 200px;
    padding: 32px 20px;
  }
}

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