:root {
  --bg: #06131d;
  --bg-soft: #0d2435;
  --card: rgba(12, 24, 35, 0.96);
  --primary: #22c55e;
  --primary-strong: #16a34a;
  --accent: #38bdf8;
  --text: #edf6ff;
  --muted: #bfe3ff;
  --panel: rgba(4, 12, 18, 0.72);
  --border: rgba(255, 255, 255, 0.09);
  --shadow: rgba(2, 6, 23, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, rgba(34, 197, 94, 0.14), transparent 28%),
    linear-gradient(135deg, var(--bg), var(--bg-soft));
  color: var(--text);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

.app-shell {
  width: min(92vw, 680px);
}

.generator-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 32px 28px;
  box-shadow: 0 24px 70px var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}

h1 {
  margin: 0;
  font-size: clamp(2.1rem, 4vw, 3rem);
}

.exit-btn {
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  padding: 10px 15px;
  cursor: pointer;
  font-weight: 700;
}

.controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.full-width {
  grid-column: 1 / -1;
}

label {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(5, 14, 20, 0.9);
  color: var(--text);
  font-size: 1rem;
  padding: 14px 12px;
}

.generate-btn {
  width: 100%;
  margin-top: 22px;
  border: 0;
  border-radius: 14px;
  padding: 16px 18px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 12px 30px rgba(34, 197, 94, 0.25);
  transition: transform 0.2s ease;
}

.generate-btn:hover {
  transform: translateY(-1px);
}

.results-panel {
  margin-top: 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px 20px;
}

.results-label {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.result-display {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1;
}

@media (max-width: 540px) {
  .generator-card {
    padding: 24px 18px;
  }

  .controls {
    grid-template-columns: 1fr;
  }
}