:root {
  color-scheme: dark;
  --bg: #111827;
  --bg-gradient: radial-gradient(
      circle at top left,
      rgba(20, 184, 166, 0.18),
      transparent 45%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(56, 189, 248, 0.18),
      transparent 40%
    ),
    linear-gradient(135deg, rgba(15, 23, 42, 0.94), rgba(17, 24, 39, 0.97));
  --surface: rgba(30, 41, 59, 0.85);
  --border: rgba(148, 163, 184, 0.2);
  --text-primary: #f8fafc;
  --text-secondary: #cbd5f5;
  --accent: #38bdf8;
  --accent-contrast: #0f172a;
  --shadow: 0 24px 68px -32px rgba(15, 23, 42, 0.9);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family:
    'Roboto',
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  background: var(--bg);
  color: var(--text-primary);
}

.background {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--bg-gradient);
}

.app {
  width: min(520px, 90vw);
  padding: 3rem 2.25rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: grid;
  gap: 1.75rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 2.75rem);
}

header p {
  margin: 0.5rem 0 0;
  color: var(--text-secondary);
}

.dedication {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.65;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0 auto;
  padding: 0.85rem 1.75rem;
  min-width: 220px;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-contrast);
  background: var(--accent);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease,
    opacity 0.2s ease;
  box-shadow: 0 12px 30px -18px rgba(56, 189, 248, 0.85);
}

button:hover,
button:focus-visible {
  transform: translateY(-1px);
  opacity: 0.92;
}

button:disabled {
  cursor: wait;
  opacity: 0.6;
  transform: none;
  box-shadow: none;
}

.status {
  min-height: 1.5rem;
  font-size: 0.95rem;
  color: var(--accent);
}

.joke-card {
  min-height: 120px;
  padding: 1.75rem;
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.65);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  line-height: 1.6;
  color: var(--text-primary);
}

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

@media (max-width: 480px) {
  .app {
    padding: 2.5rem 1.75rem;
  }

  button {
    width: 100%;
  }

  .joke-card {
    font-size: 1.2rem;
  }
}