:root {
  color-scheme: light dark;
  --accent: #c2185b;
  --panel: #1f2430;
  --panel-soft: #2b3140;
  --text: #f5f7fb;
  --muted: #b8c0d9;
  --border: rgba(255, 255, 255, 0.08);
}

body {
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 2rem 1rem;
  line-height: 1.6;
  background: #101827;
  color: var(--text);
}

main {
  max-width: 1200px;
  margin: 0 auto;
}

h1, h2, h3 {
  color: var(--text);
}

button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.7rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}

button:hover, .button:hover {
  filter: brightness(1.08);
}

.button.primary {
  background: var(--accent);
}

.button.secondary {
  background: transparent;
  border: 1px solid var(--border);
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero {
  padding: 2rem 0 1rem;
}

.hero h1 {
  margin-bottom: 0.5rem;
  font-size: clamp(2.2rem, 5vw, 4rem);
}

.lead {
  max-width: 780px;
  color: var(--muted);
  font-size: 1.08rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.feature-card {
  background: rgba(31, 36, 48, 0.9);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
}

.feature-card h2 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

.feature-card p {
  color: var(--muted);
  margin: 0;
}

#time {
  font-size: 2rem;
  font-variant-numeric: tabular-nums;
}

.bfs-shell {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bfs-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: rgba(31, 36, 48, 0.9);
}

.header-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
}

.scan-box {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.scan-controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.scan-controls input {
  flex: 1;
  padding: 0.7rem 0.8rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.scan-status {
  color: var(--muted);
  font-size: 0.85rem;
}

.scan-progress {
  width: 100%;
  height: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  display: none;
}

.scan-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #c2185b, #ff7ae5);
  transition: width 0.35s ease;
}

.progress-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.scan-detail,
.scan-path-detail {
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.scan-summary {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding-top: 0.2rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-pill.neutral {
  background: rgba(184, 192, 217, 0.12);
  color: var(--muted);
}

.status-pill.active {
  background: rgba(52, 168, 83, 0.18);
  color: #a7f3d0;
  box-shadow: 0 0 0 1px rgba(52, 168, 83, 0.3);
}

.status-pill.success {
  background: rgba(32, 201, 151, 0.15);
  color: #a7f3d0;
  box-shadow: 0 0 0 1px rgba(32, 201, 151, 0.3);
}

.status-pill.error {
  background: rgba(239, 68, 68, 0.15);
  color: #fecaca;
  box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.3);
}

.summary-text {
  color: var(--muted);
  font-size: 0.84rem;
  word-break: break-word;
}

.history-item {
  width: 100%;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  color: var(--text);
  padding: 0.55rem 0.65rem;
  text-align: left;
  font-size: 0.82rem;
  line-height: 1.4;
}

.bfs-grid {
  display: grid;
  grid-template-columns: minmax(280px, 350px) 1fr;
  gap: 1rem;
}

.panel {
  background: rgba(31, 36, 48, 0.9);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem;
}

#search-input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.7rem 0.8rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  margin-bottom: 0.75rem;
}

.meta-box {
  margin-top: 1.25rem;
}

.compact-list, .tree-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: grid;
  gap: 0.35rem;
}

.compact-list li, .tree-list li {
  padding: 0;
  color: var(--muted);
}

.tree-scroll {
  max-height: 420px;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 0.25rem;
}

.tree-path {
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
  word-break: break-word;
  padding: 0.15rem 0;
}

.duplicate-group {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.02);
  padding: 0.65rem;
  margin-bottom: 0.65rem;
}

.duplicate-header {
  font-size: 0.88rem;
  color: var(--text);
}

.duplicate-hash {
  color: var(--muted);
  font-size: 0.72rem;
  margin: 0.2rem 0 0.45rem;
  word-break: break-all;
}

.duplicate-paths {
  list-style: none;
  padding-left: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.duplicate-path {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.3rem 0.45rem;
  border: 1px solid transparent;
  border-radius: 0.4rem;
  background: rgba(255, 255, 255, 0.02);
}

.duplicate-path.selected {
  border-color: rgba(32, 201, 151, 0.8);
  background: rgba(32, 201, 151, 0.08);
}

.duplicate-path .path-label {
  color: var(--muted);
  font-size: 0.74rem;
  word-break: break-word;
  flex: 1;
}

.duplicate-keep-btn {
  padding: 0.28rem 0.55rem;
  border-radius: 0.35rem;
  font-size: 0.7rem;
  line-height: 1.2;
  background: rgba(194, 24, 91, 0.15);
  border: 1px solid rgba(194, 24, 91, 0.35);
  color: var(--text);
}

.tree-item {
  display: block;
  width: 100%;
  max-width: 100%;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.45rem 0.55rem;
  text-align: left;
  font-size: 0.92rem;
  line-height: 1.4;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
  border-radius: 0.4rem;
}

.tree-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.tree-up {
  font-weight: 700;
  color: #f7d8e8;
}

.results-panel {
  overflow-x: auto;
}

.results-panel table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  margin-top: 0.5rem;
  table-layout: fixed;
}

.results-panel th, .results-panel td {
  text-align: left;
  padding: 0.7rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  word-break: break-word;
}

.results-panel th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.results-panel td:nth-child(2),
.results-panel th:nth-child(2) {
  width: 32%;
}

code {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.1rem 0.3rem;
  border-radius: 0.25rem;
}