:root {
  --bg: hsl(0, 0%, 2%);
  --bg-card: hsl(0, 0%, 5%);
  --fg: hsl(45, 100%, 65%);
  --fg-muted: hsl(45, 30%, 40%);
  --primary: hsl(45, 100%, 55%);
  --border: hsl(45, 20%, 18%);
  --glow: hsla(45, 100%, 55%, 0.15);
  --input-bg: hsl(0, 0%, 10%);
  --red: hsl(0, 75%, 45%);
  --green: hsl(140, 50%, 40%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'IBM Plex Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  justify-content: center;
  padding: 3rem 1rem;
  min-height: 100vh;
}

h1 {
  display: inline;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  text-shadow: 0 0 12px var(--glow);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.header-row {
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.8rem;
}

.container {
  width: 100%;
  max-width: 480px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.2rem;
  margin-bottom: 0.8rem;
}

.card p {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-bottom: 0.5rem;
}

.card p strong {
  color: var(--fg);
}

.btn {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  font-family: inherit;
  font-size: 0.75rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.btn:hover {
  border-color: var(--primary);
  box-shadow: 0 0 8px var(--glow);
}

.btn-primary {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary);
  color: var(--bg);
}

.btn-danger {
  border-color: var(--red);
  color: hsl(0, 70%, 55%);
  font-size: 0.7rem;
  padding: 0.3rem 0.6rem;
}

.btn-danger:hover {
  background: var(--red);
  color: white;
}

.api-key {
  font-family: inherit;
  font-size: 0.75rem;
  background: var(--input-bg);
  border: 1px solid var(--border);
  padding: 0.6rem;
  word-break: break-all;
  color: var(--fg);
}

.key-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
}

.error {
  color: hsl(0, 70%, 55%);
  font-size: 0.8rem;
  margin-bottom: 0.8rem;
}

.success {
  color: var(--green);
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}

input[type="text"] {
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.8rem;
  width: 200px;
  outline: none;
}

input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 6px var(--glow);
}

input[type="text"]::placeholder {
  color: var(--fg-muted);
}

.name-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.name-row label {
  font-size: 0.8rem;
}

.hint {
  font-size: 0.7rem;
  color: var(--fg-muted);
  margin-bottom: 0.8rem;
}

#name-feedback {
  font-size: 0.75rem;
  margin-bottom: 0.3rem;
}

#new-key-display {
  display: none;
  margin-top: 0.8rem;
}

#new-key-display .api-key {
  border-color: var(--green);
  padding: 0.8rem;
}

.back-link {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-decoration: none;
  margin-bottom: 0.3rem;
}

.back-link:hover {
  color: var(--fg);
}

@media (min-width: 600px) {
  body {
    padding: 5rem 2rem;
  }

  h1 {
    font-size: 1.4rem;
  }

  .card {
    padding: 1.5rem;
    margin-bottom: 1rem;
  }
}