:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e6edf3;
  --muted: #8b9cb8;
  --accent: #58a6ff;
  --good: #3fb950;
  --bad: #f85149;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 600;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

.viz {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  margin-bottom: 1rem;
  min-height: 180px;
}

.rifle-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 200px;
}

.clearance-display {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  text-align: right;
  font-size: 0.85rem;
}

.clearance-display.hidden {
  display: none;
}

.clearance-label {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
}

.clearance-value {
  display: block;
  font-weight: 600;
}

.clearance-status {
  display: block;
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

.clearance-status.ok {
  color: var(--good);
}

.clearance-status.fail {
  color: var(--bad);
}

.selectors {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem 1rem;
  align-items: end;
}

.selector-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.selector-row label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

.select {
  padding: 0.5rem 0.6rem;
  font-size: 0.9rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  cursor: pointer;
}

.select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.select option {
  color: var(--text);
  background: var(--surface);
  padding: 0.35rem 0.5rem;
}

.select option.disabled {
  color: var(--muted);
}

.results {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.results.hidden {
  display: none;
}

.results h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.results-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.result-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.result-item .part-number,
.result-item .model {
  color: var(--muted);
  font-size: 0.8rem;
}

.result-item a.buy {
  margin-left: auto;
  padding: 0.35rem 0.6rem;
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.85rem;
  white-space: nowrap;
}

.result-item a.buy:hover {
  filter: brightness(1.1);
}

.result-item a.buy:not([href]) {
  opacity: 0.5;
  pointer-events: none;
}

.data-error {
  background: rgba(248, 81, 73, 0.15);
  border: 1px solid var(--bad);
  color: var(--bad);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.data-error code { font-size: 0.85em; }

.load-status { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.5rem; }

.hidden {
  display: none !important;
}

@media (min-width: 900px) {
  .viz {
    min-height: 200px;
  }
  .rifle-svg {
    max-height: 220px;
  }
}