/* ============================================
   IT Parts Research Tool - Professional Theme
   ============================================ */

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --bg-card-hover: #22272e;
  --border: #30363d;
  --border-active: #388bfd;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent-blue: #388bfd;
  --accent-blue-dark: #1f6feb;
  --accent-green: #3fb950;
  --accent-orange: #d29922;
  --accent-red: #f85149;
  --accent-purple: #bc8cff;
  --accent-cyan: #39d353;
  --tag-bg: #21262d;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --radius: 10px;
  --radius-sm: 6px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============ HEADER ============ */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  display: block;
  line-height: 1;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(63, 185, 80, 0.1);
  border: 1px solid rgba(63, 185, 80, 0.2);
  border-radius: 20px;
  font-size: 11px;
  color: var(--accent-green);
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ============ MAIN LAYOUT ============ */
.main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

/* ============ HERO SECTION ============ */
.hero {
  text-align: center;
  padding: 40px 20px 32px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--text-secondary);
  font-size: 15px;
  max-width: 600px;
  margin: 0 auto;
}

/* ============ TAB SYSTEM ============ */
.tab-nav {
  display: flex;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  margin-bottom: 24px;
  width: fit-content;
}

.tab-btn {
  padding: 10px 24px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: calc(var(--radius) - 2px);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.tab-btn:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--accent-blue);
  color: white;
  font-weight: 600;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ============ SEARCH PANELS ============ */
.search-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.panel-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.panel-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 12px;
  align-items: end;
  flex-wrap: wrap;
}

.search-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 12px;
  align-items: end;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-group input,
.input-group select {
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  transition: var(--transition);
  font-family: inherit;
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 139, 253, 0.1);
}

.input-group input::placeholder {
  color: var(--text-muted);
}

.input-group select option {
  background: var(--bg-card);
}

/* ============ BUTTONS ============ */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-blue);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(56,139,253,0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  font-size: 14px;
}

.btn-icon:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

/* ============ PROGRESS / LOADING ============ */
.search-status {
  display: none;
  margin-top: 16px;
}

.search-status.visible {
  display: block;
}

.progress-bar-wrap {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
  border-radius: 2px;
  width: 0%;
  transition: width 0.4s ease;
}

.search-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.step-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 11px;
  color: var(--text-muted);
  transition: var(--transition);
}

.step-item.active {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.step-item.done {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.step-item.error {
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.step-spinner {
  width: 10px;
  height: 10px;
  border: 1.5px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============ RESULTS SECTION ============ */
.results-container {
  display: none;
}

.results-container.visible {
  display: block;
}

/* Part Info Summary Card */
.part-summary {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: start;
}

.part-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(56,139,253,0.15), rgba(188,140,255,0.15));
  border: 1px solid rgba(56,139,253,0.3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.part-info h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.part-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.meta-tag {
  padding: 3px 10px;
  background: var(--tag-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 11px;
  color: var(--text-secondary);
}

.meta-tag.highlight {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(56,139,253,0.08);
}

.part-quick-stats {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 160px;
}

.stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.stat-label { color: var(--text-muted); }
.stat-value { font-weight: 600; }
.stat-value.green { color: var(--accent-green); }
.stat-value.orange { color: var(--accent-orange); }
.stat-value.red { color: var(--accent-red); }

/* ============ SECTIONS / ACCORDIONS ============ */
.result-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.result-section-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.result-section-header:hover {
  background: var(--bg-card);
}

.section-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-icon {
  font-size: 18px;
}

.section-label {
  font-size: 14px;
  font-weight: 600;
}

.section-count {
  padding: 2px 8px;
  background: var(--accent-blue);
  color: white;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
}

.section-toggle {
  color: var(--text-muted);
  transition: transform var(--transition);
  font-size: 12px;
}

.section-toggle.open {
  transform: rotate(180deg);
}

.result-section-body {
  display: none;
  padding: 0 20px 20px;
}

.result-section-body.open {
  display: block;
}

/* ============ COMPATIBILITY TABLE ============ */
.compat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.compat-table th {
  text-align: left;
  padding: 8px 12px;
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.compat-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.compat-table tr:last-child td {
  border-bottom: none;
}

.compat-table tr:hover td {
  background: var(--bg-card);
}

.compat-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.compat-badge.verified {
  background: rgba(63,185,80,0.12);
  color: var(--accent-green);
  border: 1px solid rgba(63,185,80,0.25);
}

.compat-badge.likely {
  background: rgba(210,153,34,0.12);
  color: var(--accent-orange);
  border: 1px solid rgba(210,153,34,0.25);
}

.compat-badge.unknown {
  background: rgba(110,118,129,0.12);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* ============ PRICING CARDS ============ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  transition: var(--transition);
  position: relative;
}

.price-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.price-card.local-supplier {
  border-color: rgba(63,185,80,0.3);
}

.local-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 2px 8px;
  background: rgba(63,185,80,0.15);
  border: 1px solid rgba(63,185,80,0.3);
  border-radius: 10px;
  font-size: 10px;
  color: var(--accent-green);
  font-weight: 600;
}

.supplier-name {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 4px;
  padding-right: 60px;
}

.supplier-url {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.price-amount {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-green);
}

.price-currency {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 400;
}

.avail-badge {
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.avail-badge.in-stock {
  background: rgba(63,185,80,0.12);
  color: var(--accent-green);
  border: 1px solid rgba(63,185,80,0.25);
}

.avail-badge.limited {
  background: rgba(210,153,34,0.12);
  color: var(--accent-orange);
  border: 1px solid rgba(210,153,34,0.25);
}

.avail-badge.out-stock {
  background: rgba(248,81,73,0.12);
  color: var(--accent-red);
  border: 1px solid rgba(248,81,73,0.25);
}

.avail-badge.check-site {
  background: rgba(110,118,129,0.12);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.price-card-footer {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.price-card-footer a {
  flex: 1;
  text-align: center;
  padding: 6px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.btn-visit {
  background: var(--accent-blue);
  color: white;
}

.btn-visit:hover {
  background: var(--accent-blue-dark);
}

.btn-search-site {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-search-site:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

/* ============ SPECS TABLE ============ */
.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.spec-row {
  display: flex;
  background: var(--bg-card);
  padding: 10px 16px;
}

.spec-key {
  color: var(--text-muted);
  min-width: 160px;
  font-size: 12px;
}

.spec-val {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 12px;
}

/* ============ ALTERNATES ============ */
.alt-parts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.alt-part-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
}

.alt-part-item:hover {
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
}

.alt-part-pn {
  font-weight: 700;
  font-size: 13px;
  font-family: 'Courier New', monospace;
  color: var(--accent-blue);
}

.alt-part-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.alt-part-reason {
  font-size: 11px;
  padding: 3px 8px;
  background: rgba(188,140,255,0.1);
  border: 1px solid rgba(188,140,255,0.25);
  border-radius: 10px;
  color: var(--accent-purple);
}

/* ============ HISTORY PANEL ============ */
.history-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.history-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.history-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.history-item {
  padding: 5px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
}

.history-item:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.history-item .hist-remove {
  color: var(--text-muted);
  font-size: 10px;
}

.history-item:hover .hist-remove {
  color: var(--accent-red);
}

/* ============ NOTES / INFO BOXES ============ */
.info-box {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.info-box.info {
  background: rgba(56,139,253,0.08);
  border: 1px solid rgba(56,139,253,0.2);
  color: var(--accent-blue);
}

.info-box.warning {
  background: rgba(210,153,34,0.08);
  border: 1px solid rgba(210,153,34,0.2);
  color: var(--accent-orange);
}

.info-box.success {
  background: rgba(63,185,80,0.08);
  border: 1px solid rgba(63,185,80,0.2);
  color: var(--accent-green);
}

/* ============ REGION SETTINGS ============ */
.settings-strip {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.settings-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.flag-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.flag-btn.active {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(56,139,253,0.08);
}

.flag-btn:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* ============ QUICK LINKS ============ */
.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 20px;
}

.quick-link {
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.quick-link:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: var(--bg-card-hover);
}

/* ============ SERVER MODEL RESULTS ============ */
.parts-category-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.category-name {
  font-size: 14px;
  font-weight: 600;
}

.category-count {
  font-size: 11px;
  color: var(--text-muted);
}

.parts-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}

.part-list-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  cursor: pointer;
  transition: var(--transition);
}

.part-list-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-1px);
}

.plc-pn {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 4px;
}

.plc-desc {
  font-size: 12px;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.plc-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
}

/* ============ EXPORT TOOLBAR ============ */
.export-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.export-label {
  font-size: 12px;
  color: var(--text-muted);
}

.export-buttons {
  display: flex;
  gap: 8px;
}

/* ============ MODAL ============ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 1000;
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 10px;
  font-size: 16px;
  line-height: 1;
}

.modal-close:hover { color: var(--accent-red); border-color: var(--accent-red); }

.modal h3 {
  font-size: 18px;
  margin-bottom: 16px;
}

/* ============ EMPTY STATE ============ */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 900px) {
  .search-row, .search-row-3 {
    grid-template-columns: 1fr;
  }
  .part-summary {
    grid-template-columns: auto 1fr;
  }
  .part-quick-stats {
    grid-column: 1/-1;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .specs-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .main { padding: 12px; }
  .hero h1 { font-size: 22px; }
  .tab-btn { padding: 8px 14px; font-size: 12px; }
  .part-summary {
    grid-template-columns: 1fr;
  }
}

/* ============ SEARCH SOURCE TAGS ============ */
.source-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.source-tag {
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.src-manufacturer { background: rgba(56,139,253,0.12); color: var(--accent-blue); border: 1px solid rgba(56,139,253,0.2); }
.src-reseller { background: rgba(188,140,255,0.12); color: var(--accent-purple); border: 1px solid rgba(188,140,255,0.2); }
.src-local { background: rgba(63,185,80,0.12); color: var(--accent-green); border: 1px solid rgba(63,185,80,0.2); }
.src-marketplace { background: rgba(210,153,34,0.12); color: var(--accent-orange); border: 1px solid rgba(210,153,34,0.2); }

/* ============ TOOLTIP ============ */
[data-tooltip] {
  position: relative;
}

[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 11px;
  white-space: nowrap;
  color: var(--text-primary);
  z-index: 100;
  pointer-events: none;
}

/* ============ PRINT STYLES ============ */
@media print {
  .header, .tab-nav, .search-panel, .settings-strip, .history-panel,
  .export-toolbar, .btn, .modal-overlay { display: none !important; }
  body { background: white; color: black; }
  .result-section-body { display: block !important; }
}

/* ============ ANIMATIONS ============ */
.fade-in {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide-in {
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ============ COPY BUTTON ============ */
.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  transition: var(--transition);
}
.copy-btn:hover { color: var(--accent-blue); background: rgba(56,139,253,0.1); }

/* Search suggestions */
.suggestions-box {
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 50;
  overflow: hidden;
}

.suggestion-item {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.suggestion-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.input-wrap {
  position: relative;
}