:root {
  --background: #101215;
  --surface: #17191d;
  --border: #2a2d33;
  --text: #e4e6e9;
  --muted: #8a8f98;
  --primary: #4c7cf0;
  --success: #3f9d6f;
  --warning: #b8863f;
  --danger: #c05252;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  padding: 0 1.5rem 3rem;
  font-size: 14px;
  line-height: 1.5;
}

header {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

h1 { margin: 0; font-size: 1.1rem; font-weight: 600; }
.subtitle { margin: 0; color: var(--muted); font-size: 0.85rem; }

.text-button {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 3px;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  cursor: pointer;
}

.text-button:hover { color: var(--text); border-color: var(--primary); }

.tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.tab-button {
  background: transparent;
  color: var(--muted);
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  font-size: 0.85rem;
  margin-bottom: -1px;
}

.tab-button.active {
  color: var(--text);
  border-bottom-color: var(--primary);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1.25rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--muted);
}

label.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 0.4rem;
}

select, input[type="search"] {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.4rem 0.55rem;
  min-width: 220px;
  font-size: 0.85rem;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface); }

.part-name { display: block; }
.part-origin { display: block; color: var(--muted); font-size: 0.78rem; margin-top: 0.15rem; }

.badge {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid transparent;
}

.badge.direct { color: var(--success); border-color: var(--success); }
.badge.equivalent { color: var(--warning); border-color: var(--warning); }

.muted { color: var(--muted); }
.empty { color: var(--muted); padding: 0.75rem 0; font-size: 0.85rem; }
.error { color: var(--danger); padding: 0.75rem 0; font-size: 0.85rem; }

section.detail-block {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
  margin-top: 1rem;
}

section.detail-block:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

section.detail-block h2 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--muted);
  font-weight: 500;
  margin: 0 0 0.6rem;
}

.part-identity .part-title { font-size: 1rem; font-weight: 600; }
.part-identity .part-meta { color: var(--muted); font-size: 0.85rem; margin-top: 0.15rem; }
.part-identity .part-description { margin-top: 0.5rem; font-size: 0.85rem; }

.result-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 1rem;
}

.result-item {
  background: var(--surface);
  padding: 0.5rem 0.7rem;
  cursor: pointer;
  font-size: 0.85rem;
}

.result-item:hover { background: #1d2025; }

/* Driver.js tour theme, matched to the app's own palette and flat style */
.driver-popover {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: none;
  padding: 0.9rem 1rem;
}

.driver-popover-title {
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
}

.driver-popover-description {
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.5;
}

.driver-popover-close-btn { color: var(--muted); }
.driver-popover-close-btn:hover { color: var(--text); }

.driver-popover-progress-text { color: var(--muted); font-size: 0.75rem; }

.driver-popover-footer-btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  text-shadow: none;
  box-shadow: none;
}

.driver-popover-footer-btn:hover { background: #1d2025; }

.driver-popover-next-btn,
.driver-popover-done-btn {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}