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

:root {
  --bg: #1a1a2e;
  --card: #16213e;
  --card-hover: #1a2744;
  --accent: #00b4d8;
  --accent-dark: #0077b6;
  --text: #e0e0e0;
  --text-dim: #8892a4;
  --border: #2a3a5c;
  --success: #10b981;
  --mono: 'Fira Code', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

header h1 {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.tagline {
  color: var(--text-dim);
  font-size: 1.1rem;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem;
}

.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.step h2 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.step-num {
  background: var(--accent);
  color: var(--bg);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.9rem;
}

select, input[type="text"], input[type="number"] {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  width: 100%;
}

select:focus, input:focus {
  outline: none;
  border-color: var(--accent);
}

.input-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.hint {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  color: var(--text);
  font-size: 0.95rem;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.components-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.component-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  transition: border-color 0.2s;
}

.component-card:has(input:checked) {
  border-color: var(--accent);
  background: rgba(0, 180, 216, 0.05);
}

.component-options {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}

.component-options label {
  font-size: 0.85rem;
}

.component-options select {
  width: auto;
  min-width: 100px;
  margin-top: 0.25rem;
}

.hidden { display: none; }

#generateBtn {
  display: block;
  width: 100%;
  padding: 1rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  margin: 1rem 0;
  transition: background 0.2s;
}

#generateBtn:hover {
  background: var(--accent-dark);
}

.output-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.output-header h2 {
  font-size: 1.1rem;
}

.output-actions {
  display: flex;
  gap: 0.5rem;
}

.output-actions button {
  background: var(--accent-dark);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}

.output-actions button:hover {
  background: var(--accent);
}

#yamlOutput {
  padding: 1.25rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
  background: #0d1117;
  margin: 0;
  min-height: 200px;
  white-space: pre;
}

/* YAML syntax highlighting */
.yaml-key { color: #7ee787; }
.yaml-value { color: #a5d6ff; }
.yaml-comment { color: #6e7681; }
.yaml-string { color: #a5d6ff; }
.yaml-bool { color: #ff7b72; }
.yaml-number { color: #d2a8ff; }

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover { text-decoration: underline; }

.sub { font-size: 0.75rem; margin-top: 0.25rem; opacity: 0.6; }

/* Responsive */
@media (max-width: 600px) {
  .components-grid { grid-template-columns: 1fr; }
  .input-row { grid-template-columns: 1fr; }
  header h1 { font-size: 1.5rem; }
  .output-header { flex-direction: column; gap: 0.5rem; }
}