:root {
  --bg: #f5f5f7;
  --card-bg: #ffffff;
  --accent: #0052cc;
  --accent-soft: #e2ecff;
  --text-main: #222222;
  --text-muted: #666666;
  --border-subtle: #dddddd;
  --radius-lg: 12px;
  --shadow-soft: 0 8px 20px rgba(0, 0, 0, 0.06);
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text-main);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header / nav */

.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.header-inner {
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-header h1 {
  margin: 0;
  font-size: 1.8rem;
}

.tagline {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.main-nav {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.nav-link {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--text-muted);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.nav-link:hover {
  background: #f0f0f5;
}

.nav-link.active {
  border-color: var(--accent-soft);
  background: var(--accent-soft);
  color: var(--accent);
}

/* Hero */

.hero-section {
  margin-top: 1.5rem;
  margin-bottom: 1.25rem;
}

/* Filters (compact & sleek) */

.filters {
  margin: 0.75rem 0 1.5rem;
  padding: 0.6rem 0.9rem;
  background: #ffffff;
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  column-gap: 1rem;
  row-gap: 0.75rem;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
}

.filter-group label {
  font-weight: 600;
  color: var(--text-main);
}

.filter-group input[type="text"],
.filter-group select {
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.filter-group input[type="text"]:focus,
.filter-group select:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.checkbox-group {
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
}

.checkbox-group label {
  font-weight: 500;
}

.checkbox-group input[type="checkbox"] {
  margin-right: 0.4rem;
}

#resetFilters,
#docResetFilters {
  margin-top: auto;
  align-self: flex-start;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  border: none;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
  font-size: 0.8rem;
}

#resetFilters:hover,
#docResetFilters:hover {
  background: var(--accent);
  color: #ffffff;
}

/* Results info */

.results-info {
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Parts list */

.parts-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.part-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 0.9rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid transparent;
}

.part-card:hover {
  border-color: var(--accent-soft);
}

.part-layout {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: flex-start;
}

.part-thumbnail {
  width: 72px;
  height: 72px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  background: #fafafa;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.part-thumbnail img {
  max-width: 100%;
  max-height: 100%;
  display: block;
}

.part-main {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.part-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.part-number {
  font-weight: 700;
  font-size: 1rem;
}

.part-name {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.part-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.35rem;
}

.badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: #fafafa;
  color: var(--text-muted);
}

.badge.accent {
  border-color: var(--accent-soft);
  background: var(--accent-soft);
  color: var(--accent);
}

.part-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.part-meta strong {
  color: var(--text-main);
}

.part-actions {
  margin-top: 0.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.part-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--accent-soft);
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--accent);
  background: #ffffff;
  white-space: nowrap;
}

.part-actions a:hover {
  background: var(--accent);
  color: #ffffff;
}

.no-results {
  grid-column: 1 / -1;
  padding: 1.5rem;
  text-align: center;
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-subtle);
  color: var(--text-muted);
}

/* Pagination */

.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  margin-bottom: 2rem;
}

.page-btn {
  min-width: 2.1rem;
  padding: 0.3rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  font-size: 0.85rem;
  cursor: pointer;
}

.page-btn:hover {
  border-color: var(--accent-soft);
  background: #f3f6ff;
}

.page-btn.current {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.page-btn[disabled] {
  opacity: 0.5;
  cursor: default;
}

/* Docs list */

.docs-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.doc-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.doc-card:hover {
  border-color: var(--accent-soft);
}

.doc-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.doc-type-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--accent-soft);
  background: var(--accent-soft);
  color: var(--accent);
  display: inline-block;
}

.doc-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.doc-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--accent-soft);
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--accent);
  background: #ffffff;
  white-space: nowrap;
}

.doc-actions a:hover {
  background: var(--accent);
  color: #ffffff;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 0.75rem 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}