/* ==========================================
   GPU HARDWARE B2B STOREFRONT - DESIGN SPECIFICATION
   Theme: Industrial Modernism
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* Color Tokens */
  --brand-navy: #092a5f;
  --action-blue: #1769ff;
  --success-emerald: #059669;
  --warning-red: #dc2626;
  
  /* Slate & Steel Tones */
  --bg-dark: #070b13;
  --bg-surface: #0f1624;
  --card-bg: rgba(15, 22, 36, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(23, 105, 255, 0.4);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Consolas', 'Courier New', Courier, monospace;
  
  /* Text colors */
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Layout */
  --max-width: 1440px;
  --header-height: 70px;
}

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

body {
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(at 0% 0%, rgba(9, 42, 95, 0.3) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(23, 105, 255, 0.15) 0px, transparent 50%);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  color: var(--action-blue);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.8;
}

/* Header & Navigation */
header {
  height: var(--header-height);
  border-bottom: 1px solid var(--border-color);
  background: rgba(7, 11, 19, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 1px;
}

.logo span {
  color: var(--action-blue);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--brand-navy), var(--action-blue));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.locale-selector, .currency-selector {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 0.875rem;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.locale-selector:focus, .currency-selector:focus {
  border-color: var(--action-blue);
}

.crm-toggle-btn {
  background: rgba(23, 105, 255, 0.1);
  border: 1px solid rgba(23, 105, 255, 0.3);
  color: var(--action-blue);
  padding: 6px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
}

.crm-toggle-btn:hover {
  background: var(--action-blue);
  color: #fff;
  box-shadow: 0 0 12px rgba(23, 105, 255, 0.4);
}

/* Main Layout Grid */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 30px 40px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 30px;
  align-items: start;
}

/* Sidebar / Product Info & Catalog */
.product-sidebar {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.glass-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

/* Monospace part numbers */
.part-number-display {
  font-family: var(--font-mono);
  background: rgba(0, 0, 0, 0.3);
  padding: 8px 12px;
  border-radius: 6px;
  border-left: 3px solid var(--action-blue);
  color: var(--text-primary);
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  margin: 12px 0;
  display: inline-block;
}

.product-selector-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.product-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 12px 8px;
  border-radius: 6px;
  cursor: pointer;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s;
}

.product-tab:hover {
  border-color: var(--action-blue);
  color: var(--text-primary);
}

.product-tab.active {
  background: linear-gradient(135deg, rgba(23, 105, 255, 0.15), rgba(9, 42, 95, 0.3));
  border-color: var(--action-blue);
  color: var(--action-blue);
  box-shadow: 0 0 10px rgba(23, 105, 255, 0.15);
}

/* Form Styles */
.config-group {
  margin-bottom: 20px;
}

.config-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.dropdown-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

select.config-input, input.config-input {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 12px;
  border-radius: 6px;
  font-family: var(--font-sans);
  outline: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}

select.config-input:focus, input.config-input:focus {
  border-color: var(--action-blue);
  box-shadow: 0 0 8px rgba(23, 105, 255, 0.2);
}

.input-with-unit {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-unit input {
  padding-right: 35px;
}

.input-with-unit .unit {
  position: absolute;
  right: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* Alterations section styling */
.alterations-panel {
  border-top: 1px solid var(--border-color);
  margin-top: 20px;
  padding-top: 20px;
}

.alteration-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.alteration-checkbox-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.alteration-checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--action-blue);
  cursor: pointer;
}

.alteration-spec {
  color: var(--text-secondary);
  font-size: 0.75rem;
  grid-column: span 3;
  margin-top: -6px;
  margin-left: 24px;
  margin-bottom: 8px;
}

/* Visual Canvas & CAD blueprint */
.visualizer-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-height: 480px;
}

.blueprint-container {
  background: radial-gradient(circle at 50% 50%, #0d162a, #070b13);
  border: 1px dashed rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  height: 320px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.blueprint-container svg {
  max-width: 100%;
  max-height: 100%;
  transition: transform 0.5s ease-in-out;
}

.blueprint-container:hover svg {
  transform: scale(1.02);
}

.blueprint-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: 20px 20px;
  background-image: 
    linear-gradient(to right, rgba(255,255,255,0.01) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.01) 1px, transparent 1px);
  pointer-events: none;
}

.watermark {
  position: absolute;
  bottom: 10px;
  right: 15px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: rgba(255,255,255,0.15);
  letter-spacing: 1px;
}

/* Glassmorphism contextual data Overlay */
.glass-overlay {
  position: absolute;
  top: 15px;
  left: 15px;
  right: 15px;
  background: rgba(9, 42, 95, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 12px 18px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  transition: all 0.3s;
}

.overlay-spec-group {
  display: flex;
  gap: 20px;
}

.overlay-spec {
  display: flex;
  flex-direction: column;
}

.overlay-spec .label {
  font-size: 0.65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.overlay-spec .val {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
}

/* Decision Strip Module */
.decision-strip {
  background: linear-gradient(135deg, rgba(9, 42, 95, 0.4), rgba(15, 22, 36, 0.8));
  border-left: 4px solid var(--action-blue);
  border-radius: 8px;
  padding: 16px;
  margin-top: 10px;
}

.decision-strip h4 {
  font-size: 0.95rem;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.decision-strip-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.decision-result {
  background: rgba(0,0,0,0.25);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 0.825rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.shaft-badge {
  font-family: var(--font-mono);
  background: var(--brand-navy);
  border: 1px solid var(--action-blue);
  color: var(--action-blue);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: bold;
}

/* Quantity, Pricing & RFQ Module */
.price-checkout-card {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.price-display-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 15px;
}

.price-main {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-sans);
}

.price-main span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-left: 5px;
}

.price-original {
  text-decoration: line-through;
  color: var(--text-muted);
  font-size: 1rem;
  margin-left: 8px;
}

.qty-stepper {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 4px;
  width: 140px;
}

.qty-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 1.1rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.qty-btn:hover {
  background: rgba(255,255,255,0.05);
}

.qty-input {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1rem;
  outline: none;
}

/* Volume discount visual scale */
.discount-progress {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.discount-progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.discount-progress-labels span.active {
  color: var(--success-emerald);
  font-weight: bold;
}

.discount-track {
  height: 8px;
  background: var(--bg-surface);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.discount-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--action-blue), var(--success-emerald));
  width: 0%;
  transition: width 0.3s ease;
}

.shipping-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(5, 150, 105, 0.1);
  border: 1px solid rgba(5, 150, 105, 0.2);
  color: var(--success-emerald);
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 4px;
  width: fit-content;
}

/* Buttons */
.btn-group {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 15px;
  margin-top: 10px;
}

.btn {
  padding: 14px 20px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  border: none;
}

.btn-primary {
  background: var(--action-blue);
  color: #fff;
}

.btn-primary:hover {
  background: #0056f3;
  box-shadow: 0 4px 15px rgba(23, 105, 255, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: rgba(255,255,255,0.02);
}

.btn-disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Validation warnings */
.alert-box {
  background: rgba(220, 38, 38, 0.1);
  border: 1px solid rgba(220, 38, 38, 0.25);
  color: var(--text-primary);
  border-left: 4px solid var(--warning-red);
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 0.85rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 15px;
  display: none; /* toggled via JS */
  animation: shake 0.35s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* CAD Download Gateway Modal & RFQ Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: all;
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  width: 100%;
  max-width: 500px;
  padding: 30px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
  position: relative;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal-backdrop.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.modal-close:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.modal-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.modal-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.modal-form-group {
  margin-bottom: 15px;
}

.modal-form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.modal-input {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 12px;
  border-radius: 6px;
  font-family: var(--font-sans);
  outline: none;
  font-size: 0.9rem;
}

.modal-input:focus {
  border-color: var(--action-blue);
}

/* Admin / CRM Dashboard */
.crm-dashboard {
  max-width: var(--max-width);
  margin: 0 auto 50px auto;
  padding: 0 40px;
  display: none; /* default hidden */
}

.crm-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.crm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}

.crm-stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
}

.crm-stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.crm-stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--action-blue);
  margin-top: 5px;
  font-family: var(--font-mono);
}

.crm-table-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  max-height: 350px;
  overflow-y: auto;
}

.crm-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.crm-table th {
  background: rgba(0,0,0,0.25);
  padding: 12px 16px;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

.crm-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.crm-table tr:hover {
  background: rgba(255,255,255,0.01);
}

.crm-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: bold;
}

.crm-badge-rfq {
  background: rgba(23, 105, 255, 0.15);
  color: var(--action-blue);
}

.crm-badge-cad {
  background: rgba(5, 150, 105, 0.15);
  color: var(--success-emerald);
}

.crm-badge-checkout {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--success-emerald);
  border-left: 4px solid var(--success-emerald);
  color: var(--text-primary);
  padding: 14px 20px;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  z-index: 10000;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.toast.active {
  transform: translateY(0);
  opacity: 1;
}

/* ================================================================
   STAGE 12 — RESPONSIVE SYSTEM
   Breakpoints: 360 / 375 / 390 / 480 / 768 / 1024 / 1366 / 1920
   ================================================================ */

/* ── Skip Navigation Link (Accessibility) ──────────────────────── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 99999;
  background: var(--action-blue);
  color: #fff;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

/* ── Focus Visible (All Interactive Elements) ───────────────────── */
:focus-visible {
  outline: 2px solid var(--action-blue);
  outline-offset: 2px;
  border-radius: 4px;
}
:focus:not(:focus-visible) { outline: none; }

/* ── Touch Target Minimum ───────────────────────────────────────── */
button, .nav-tab, .quick-q-btn, select, input[type="checkbox"], input[type="radio"] {
  min-height: 40px;
}

/* ── Prefers-Reduced-Motion ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .backdrop-blur, .glass-card { backdrop-filter: none !important; filter: none !important; }
}

/* ── Error/Loading Boundary (per-channel) ───────────────────────── */
.channel-loading {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 60px 20px; gap: 16px;
  color: var(--text-secondary); font-size: 0.9rem;
}
.channel-loading .spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--action-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.channel-error {
  display: flex; flex-direction: column; align-items: center;
  padding: 40px 20px; gap: 12px; text-align: center;
  color: var(--warning-red);
}
.channel-error button {
  background: transparent; border: 1px solid var(--warning-red);
  color: var(--warning-red); padding: 8px 20px; border-radius: 6px;
  cursor: pointer; font-size: 0.85rem;
}

/* ── Backdrop-blur: disable on GPU < budget ─────────────────────── */
@supports not (backdrop-filter: blur(1px)) {
  .glass-card { background: var(--bg-surface); }
}

/* ── 1920px (4K / wide) ─────────────────────────────────────────── */
@media (min-width: 1920px) {
  :root { --max-width: 1680px; }
}

/* ── 1366px (Laptop) ────────────────────────────────────────────── */
@media (max-width: 1366px) {
  .tabs-navigation { padding: 0 24px; gap: 8px; }
  .nav-tab { padding: 10px 18px; font-size: 0.85rem; }
}

/* ── 1024px (Tablet Landscape / Small Laptop) ───────────────────── */
@media (max-width: 1024px) {
  .container { grid-template-columns: 1fr; }
  .catalog-filters { grid-template-columns: 1fr 1fr; }
  .crm-grid { grid-template-columns: repeat(2, 1fr); }
  header { padding: 0 20px; }
  .tabs-navigation { padding: 0 16px; flex-wrap: wrap; gap: 6px; }
  .nav-tab { padding: 9px 14px; font-size: 0.82rem; }
}

/* ── 768px (Tablet Portrait) ────────────────────────────────────── */
@media (max-width: 768px) {
  /* Header: compact hamburger-friendly layout */
  header {
    padding: 0 16px;
    height: auto;
    min-height: var(--header-height);
    flex-wrap: wrap;
    gap: 8px;
  }
  .nav-actions {
    flex-wrap: wrap;
    gap: 6px;
  }
  .nav-actions select, .nav-actions button {
    font-size: 0.78rem;
    padding: 6px 10px;
  }

  /* Tabs: scroll horizontally, don't wrap text */
  .tabs-navigation {
    padding: 0 12px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .tabs-navigation::-webkit-scrollbar { display: none; }
  .nav-tab {
    white-space: nowrap;
    padding: 8px 14px;
    font-size: 0.8rem;
    flex-shrink: 0;
  }

  /* Catalog filters: stack vertically */
  .catalog-filters { grid-template-columns: 1fr; gap: 10px; }

  /* Catalog table: scrollable, don't overflow */
  .catalog-table-container { max-height: 420px; border-radius: 6px; overflow-x: auto; }
  .catalog-table { min-width: 600px; font-size: 0.8rem; }
  .catalog-table th, .catalog-table td { padding: 10px 12px; }

  /* RFQ Cart: stack to cards on mobile */
  #quote-cart-items table thead { display: none; }
  #quote-cart-items table tr {
    display: block;
    margin-bottom: 12px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
  }
  #quote-cart-items table td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 0;
    border: none;
    font-size: 0.82rem;
  }
  #quote-cart-items table td::before {
    content: attr(data-label);
    color: var(--text-muted);
    font-size: 0.74rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    flex-shrink: 0;
    margin-right: 8px;
  }

  /* CRM Grid: single column */
  .crm-grid { grid-template-columns: 1fr; }
  .crm-dashboard { padding: 20px 16px; }

  /* Chat: full width */
  #panel-ai-chat { padding: 16px !important; }
  .chat-container { border-radius: 8px; }
  .chat-input-bar { padding: 12px 16px; }

  /* Work marketplace grid: 1 column */
  #job-board-grid { grid-template-columns: 1fr !important; }

  .container { padding: 16px; }
}

/* ── 480px (Large Phone Landscape) ─────────────────────────────── */
@media (max-width: 480px) {
  :root { --header-height: 56px; }
  header { padding: 0 12px; }
  .nav-tab { padding: 7px 10px; font-size: 0.75rem; }
  #quote-cart-section { padding: 0 12px !important; }
  .tabs-navigation { margin: 12px auto 0; }
}

/* ── 390px (iPhone Pro / Galaxy S) ─────────────────────────────── */
@media (max-width: 390px) {
  body { font-size: 15px; }
  .nav-tab span { display: none; } /* Show only emoji on very small screens */
  .nav-tab { padding: 8px 12px; font-size: 1rem; min-width: 44px; justify-content: center; }
  .crm-stat-card { padding: 14px; }
  .catalog-search-input { font-size: 16px; } /* Prevent iOS zoom on focus */
}

/* ── 375px (iPhone SE / Standard) ──────────────────────────────── */
@media (max-width: 375px) {
  /* CRITICAL: Prevent horizontal overflow */
  body { overflow-x: hidden; }
  * { max-width: 100%; }
  img, video, canvas { max-width: 100%; height: auto; }
  .glass-card { padding: 12px !important; }
  .catalog-table { min-width: 480px; font-size: 0.76rem; }
}

/* ── 360px (Android Budget) ─────────────────────────────────────── */
@media (max-width: 360px) {
  header .logo img { height: 36px !important; }
  .crm-stat-card { padding: 12px; }
  .catalog-table { min-width: 440px; }
}

/* ── Modal accessibility: focus-trap visible ───────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.65);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  overflow-y: auto;
  padding: 16px;
}
.modal-overlay > div {
  max-height: calc(100vh - 32px);
  overflow-y: auto;
  width: 100%;
}

/* ── Zoom 200% safeguard ────────────────────────────────────────── */
@media (max-width: 480px) and (min-resolution: 2dppx) {
  .catalog-search-input, select { font-size: 16px; } /* prevent iOS double-tap zoom */
}

/* Page Level Tab Navigation */
.tabs-navigation {
  max-width: var(--max-width);
  margin: 20px auto 0 auto;
  padding: 0 40px;
  display: flex;
  gap: 12px;
}

.nav-tab {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s ease;
}

.nav-tab:hover {
  border-color: rgba(255,255,255,0.2);
  color: var(--text-primary);
  background: rgba(255,255,255,0.01);
}

.nav-tab.active {
  background: linear-gradient(135deg, rgba(23, 105, 255, 0.15), rgba(9, 42, 95, 0.35));
  border-color: var(--action-blue);
  color: var(--action-blue);
  box-shadow: 0 0 12px rgba(23, 105, 255, 0.2);
}

/* Ba bước bán hàng chính: tìm sản phẩm, tư vấn và gửi báo giá. */
.nav-tab.sales-channel {
  min-height: 50px;
  border-radius: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.nav-tab.sales-channel:hover {
  transform: translateY(-1px);
  border-color: var(--action-blue);
  box-shadow: 0 8px 22px rgba(23, 105, 255, 0.14);
}

.nav-tab.sales-channel.active {
  color: #fff;
  background: linear-gradient(135deg, #1769ff, #0b8edb);
  box-shadow: 0 10px 26px rgba(23, 105, 255, 0.25);
}

/* Global Catalog Layout */
.catalog-filters {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 15px;
  margin-bottom: 20px;
}

.catalog-search-input {
  width: 100%;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 6px;
  font-family: var(--font-sans);
  outline: none;
  font-size: 0.9rem;
  transition: border-color 0.2s;
}

.catalog-search-input:focus {
  border-color: var(--action-blue);
}

.catalog-table-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  max-height: 580px;
  overflow-y: auto;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

.catalog-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.catalog-table th {
  background: rgba(0,0,0,0.3);
  padding: 14px 16px;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1;
}

.catalog-table td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  vertical-align: middle;
}

.catalog-table tr {
  cursor: pointer;
  transition: background 0.15s;
}

.catalog-table tr:hover {
  background: rgba(23, 105, 255, 0.04);
}

.part-badge-mono {
  font-family: var(--font-mono);
  background: rgba(0,0,0,0.4);
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--text-primary);
  border-left: 2px solid var(--action-blue);
  font-size: 0.85rem;
}

/* ── Catalog + RFQ layout stabilization (UI/runtime validation) ─────────── */
.quote-cart-section {
  max-width: 1440px;
  margin: 0 auto 40px;
  padding: 0 32px;
}

.quote-cart-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.quote-cart-hint {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: right;
}

.quote-cart-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 380px);
  gap: 24px;
  align-items: start;
}

.quote-cart-table-wrap {
  padding: 0;
  overflow-x: auto;
  scrollbar-gutter: stable;
}

.quote-cart-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  table-layout: fixed;
}

.quote-col-part { width: 20%; }
.quote-col-category { width: 10%; }
.quote-col-dim { width: 11%; }
.quote-col-material { width: 12%; }
.quote-col-commercial { width: 16%; }
.quote-col-qty { width: 13%; }
.quote-col-note { width: 13%; }
.quote-col-remove { width: 5%; }

.quote-cart-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.quote-form-fields {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.catalog-browser-card {
  overflow: hidden;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1.15fr) minmax(260px,0.85fr);
  gap: 20px;
  align-items: start;
}

.catalog-view-controls {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

.catalog-stats-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.catalog-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
}

.catalog-card {
  min-width: 0;
  min-height: 148px;
  contain: layout paint;
}

.catalog-card:hover {
  border-color: var(--catalog-accent) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.catalog-card svg {
  width: 44px;
  height: 44px;
}

.catalog-table-container {
  overflow: auto;
  scrollbar-gutter: stable both-edges;
}

.catalog-table {
  min-width: 1080px;
  table-layout: fixed;
}

.catalog-col-image { width: 66px; }
.catalog-col-part { width: 150px; }
.catalog-col-category { width: 120px; }
.catalog-col-supplier { width: 120px; }
.catalog-col-diameter { width: 80px; }
.catalog-col-length { width: 75px; }
.catalog-col-material { width: 120px; }
.catalog-col-hardness { width: 155px; }
.catalog-col-source { width: 130px; }

.catalog-table th,
.catalog-table td {
  overflow-wrap: anywhere;
}

.catalog-table td {
  height: 68px;
}

.catalog-table .catalog-icon-cell {
  padding: 6px 8px;
  text-align: center;
}

.catalog-table .catalog-icon-cell svg {
  width: 38px;
  height: 38px;
}

.catalog-table .catalog-dim-cell {
  color: #60a5fa;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.catalog-table .catalog-muted-cell {
  color: var(--text-muted);
}

.catalog-table .catalog-source-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(52,211,153,0.1);
  color: #34d399;
  font-size: 0.72rem;
  white-space: nowrap;
}

@media (max-width: 1320px) {
  .quote-cart-layout { grid-template-columns: minmax(0, 1fr); }
  #quote-request-form-card { max-width: none; }
  .quote-form-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .quote-form-fields > :nth-child(5),
  .quote-form-fields > #rfq-summary-line,
  .quote-form-fields > #btn-submit-rfq { grid-column: 1 / -1; }
}

@media (max-width: 1180px) {
  .catalog-card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-detail-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-detail-grid > :last-child { grid-column: 1 / -1; display: grid !important; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .catalog-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-stats-bar { align-items: flex-start; }
}

@media (max-width: 768px) {
  .quote-cart-section { padding: 0 16px; }
  .quote-cart-header { align-items: flex-start; flex-wrap: wrap; }
  .quote-cart-hint { width: 100%; margin-left: 0; text-align: left; }
  .quote-form-fields { display: flex; }
  .quote-cart-table { min-width: 0; table-layout: auto; }
  .quote-cart-actions { flex-wrap: wrap; }
  .catalog-table { min-width: 900px; }
  .catalog-stats-bar { flex-direction: column; gap: 6px; }
  #panel-catalog { padding: 18px 12px !important; }
  #catalog-product-detail { padding: 0 0 40px !important; }
  .product-detail-grid { grid-template-columns: minmax(0, 1fr); }
  .product-detail-grid > :last-child { grid-column: auto; display: flex !important; }
}

@media (max-width: 560px) {
  .catalog-card-grid { grid-template-columns: minmax(0, 1fr); }
  .catalog-view-controls { width: 100%; margin-left: 0; }
  .catalog-view-controls button { flex: 1; }
}

/* Chat Assistant Widget Layout */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 600px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  backdrop-filter: blur(8px);
}

.chat-header {
  padding: 16px 24px;
  background: rgba(9, 42, 95, 0.2);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-pulse-indicator {
  width: 10px;
  height: 10px;
  background: var(--success-emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success-emerald);
  animation: pulse 2s infinite;
}

.chat-messages {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-message {
  max-width: 75%;
  padding: 14px 18px;
  border-radius: 12px;
  font-size: 0.92rem;
  line-height: 1.45;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.chat-message.user {
  background: var(--action-blue);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.chat-message.assistant {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}

.chat-thinking {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-style: italic;
  background: rgba(23, 105, 255, 0.05);
  border: 1px dashed rgba(23, 105, 255, 0.3);
  padding: 10px 16px;
  border-radius: 8px;
  margin-left: 10px;
}

.chat-input-bar {
  display: flex;
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.25);
  border-top: 1px solid var(--border-color);
  gap: 12px;
}

.chat-quick-questions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 24px 16px 24px;
  background: transparent;
}

.quick-q-btn {
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.76rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.quick-q-btn:hover {
  background: rgba(23, 105, 255, 0.1);
  color: var(--action-blue);
  border-color: var(--action-blue);
  box-shadow: 0 2px 8px rgba(23, 105, 255, 0.15);
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}
/* OSG category navigation - sprite sourced from the official menu artwork. */
.osg-category-menu {
  display: grid;
  grid-template-columns: repeat(7, minmax(118px, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.osg-category-button {
  min-height: 132px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 8px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--glass-bg);
  color: var(--text-primary);
  cursor: pointer;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}

.osg-category-button:hover,
.osg-category-button:focus-visible,
.osg-category-button.active {
  transform: translateY(-2px);
  border-color: var(--action-blue);
  background: rgba(23, 105, 255, .08);
  outline: none;
}

.osg-category-icon {
  width: 76px;
  height: 76px;
  display: block;
  flex: 0 0 76px;
  object-fit: contain;
  margin-bottom: 7px;
}

.osg-category-button strong {
  display: block;
  font-size: .86rem;
  line-height: 1.15;
}

.osg-category-button > span:last-child {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: .72rem;
}

@media (max-width: 1050px) {
  .osg-category-menu { grid-template-columns: repeat(4, minmax(120px, 1fr)); }
}

@media (max-width: 620px) {
  .osg-category-menu { grid-template-columns: repeat(2, minmax(120px, 1fr)); }
  .osg-category-button { min-height: 120px; }
}

/* Catalog truthfulness: never present a category/series image as an exact SKU image. */
.catalog-image-status {
  position: absolute;
  top: 7px;
  left: 7px;
  z-index: 3;
  max-width: calc(100% - 88px);
  padding: 4px 7px;
  border-radius: 6px;
  font-size: .55rem;
  font-weight: 800;
  line-height: 1.25;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .12);
}
.catalog-image-status.is-exact { background: #dcfce7; color: #166534; border: 1px solid #86efac; }
.catalog-image-status.is-series { background: #fff7ed; color: #9a3412; border: 1px solid #fdba74; }
.catalog-image-missing {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--text-muted);
  background: repeating-linear-gradient(135deg, rgba(148, 163, 184, .06) 0 8px, transparent 8px 16px);
}
.catalog-image-missing svg { opacity: .62; transform: scale(.8); }
.catalog-image-missing span { max-width: 150px; text-align: center; font-size: .62rem; font-weight: 700; line-height: 1.25; }
.catalog-data-status {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 6px;
  padding: 3px 7px;
  border-radius: 999px;
  font-size: .57rem;
  font-weight: 750;
}
.catalog-data-status.is-complete { color: #047857; background: rgba(16, 185, 129, .11); }
.catalog-data-status.is-incomplete { color: #b45309; background: rgba(245, 158, 11, .12); }
.catalog-detail-image-block {
  width: 100%;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px;
  border-radius: 10px;
  background: #fff;
  color: #334155;
}
.catalog-detail-image-block img { display: block; width: 100%; height: 250px; object-fit: contain; }
.catalog-detail-image-block strong { font-size: .78rem; }
.catalog-detail-image-block span { max-width: 300px; color: #92400e; font-size: .7rem; line-height: 1.45; }
.catalog-detail-image-block.is-series { border: 1px solid #fdba74; background: #fffaf3; }
.catalog-detail-image-block.is-exact { border: 1px solid #86efac; }
.catalog-detail-image-block.is-missing { border: 1px dashed #cbd5e1; background: #f8fafc; }
.catalog-detail-image-block.is-missing svg { opacity: .55; transform: scale(1.35); margin-bottom: 14px; }
.catalog-detail-image-block.is-missing span { color: #64748b; text-align: center; }
.catalog-source-truth { display: grid; gap: 5px; margin-top: 12px; padding: 12px 14px; border-radius: 8px; font-size: .76rem; line-height: 1.45; }
.catalog-source-truth.is-complete { color: #047857; background: rgba(16, 185, 129, .09); border: 1px solid rgba(16, 185, 129, .3); }
.catalog-source-truth.is-incomplete { color: #92400e; background: rgba(245, 158, 11, .09); border: 1px solid rgba(245, 158, 11, .3); }
.catalog-source-truth span, .catalog-source-truth small { color: var(--text-secondary); }
.catalog-applications-only { display: grid; gap: 10px; padding: 16px 18px; }
.catalog-applications-only > strong { color: var(--text-primary); font-size: .8rem; }
.catalog-applications-only > div { display: flex; flex-wrap: wrap; gap: 7px; }
.catalog-applications-only > div span { padding: 5px 10px; border-radius: 999px; background: rgba(23, 105, 255, .1); color: var(--action-blue); font-size: .72rem; }
.catalog-applications-only small, .catalog-applications-only > span { color: var(--text-muted); font-size: .7rem; line-height: 1.45; }


/* ═══════════════════════════════════════════════════════════════
   CATALOG PROFESSIONAL LAYOUT (Misumi/Grainger style)
   Added 2026-07-20
   ═══════════════════════════════════════════════════════════════ */

/* Trust bar */
.catalog-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
  padding: 14px 20px;
  background: rgba(29, 78, 216, 0.06);
  border: 1px solid rgba(29, 78, 216, 0.18);
  border-radius: 10px;
}
.trust-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.trust-item svg { flex-shrink: 0; margin-top: 2px; }
.trust-item strong { display: block; font-size: .72rem; font-weight: 700; color: var(--text-primary); margin-bottom: 2px; letter-spacing: .02em; }
.trust-item span  { display: block; font-size: .65rem; color: var(--text-muted); }
@media (max-width: 900px) { .catalog-trust-bar { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .catalog-trust-bar { grid-template-columns: 1fr; } }

/* Two-column layout */
.catalog-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  align-items: flex-start;
}
@media (max-width: 900px) { .catalog-layout { grid-template-columns: 1fr; } }

/* Sidebar */
.catalog-sidebar {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  scrollbar-width: thin;
}
/* Mobile/tablet: the filter panel must participate in normal document flow.
   Keeping it sticky here makes it cover the product list while scrolling. */
@media (max-width: 900px) {
  .catalog-sidebar {
    position: static;
    top: auto;
    max-height: none;
    overflow: visible;
  }
}
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: rgba(30, 41, 59, .8);
}
.sidebar-header button {
  background: none; border: none; color: var(--action-blue);
  font-size: .68rem; font-weight: 600; cursor: pointer;
}
.sidebar-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
}
.sidebar-section:last-child { border-bottom: none; }
.sidebar-section-title {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--text-secondary); margin-bottom: 8px;
}
.sidebar-search-wrap { margin-bottom: 8px; }
.sidebar-search-input {
  width: 100%; padding: 5px 8px;
  background: rgba(255,255,255,.04); border: 1px solid var(--border-color);
  border-radius: 6px; color: var(--text-primary); font-size: .72rem;
  outline: none;
}
.sidebar-search-input:focus { border-color: var(--action-blue); }
.sidebar-checklist { display: flex; flex-direction: column; gap: 4px; }
.sidebar-check-item {
  display: flex; align-items: center; justify-content: space-between;
  gap: 6px; cursor: pointer; padding: 3px 0;
}
.sidebar-check-item input[type=checkbox] { flex-shrink: 0; accent-color: var(--action-blue); }
.sidebar-check-item .label { font-size: .72rem; color: var(--text-secondary); flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-check-item.active .label { color: var(--text-primary); font-weight: 600; }
.sidebar-check-item .count { font-size: .62rem; color: var(--text-muted); flex-shrink: 0; }
.sidebar-show-more {
  margin-top: 6px; background: none; border: none; color: var(--action-blue);
  font-size: .68rem; cursor: pointer; padding: 0;
}
.sidebar-dim-inputs { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.sidebar-dim-input {
  width: 70px; padding: 5px 7px;
  background: rgba(255,255,255,.04); border: 1px solid var(--border-color);
  border-radius: 6px; color: var(--text-primary); font-size: .72rem; outline: none;
}
.sidebar-dim-presets { display: flex; gap: 4px; flex-wrap: wrap; }
.dim-preset {
  padding: 3px 8px; background: rgba(255,255,255,.04);
  border: 1px solid var(--border-color); border-radius: 4px;
  font-size: .65rem; color: var(--text-secondary); cursor: pointer;
}
.dim-preset:hover, .dim-preset.active { background: var(--action-blue); color: #fff; border-color: var(--action-blue); }
.sidebar-toggle-label {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  font-size: .72rem; color: var(--text-secondary);
}

/* Sidebar smart filters (moved from main content) */
.sidebar-smart-filters {
  display: flex; flex-direction: column; gap: 8px;
}
.sidebar-smart-label {
  display: flex; flex-direction: column; gap: 3px;
  font-size: .7rem; font-weight: 600; color: var(--text-secondary);
  letter-spacing: .02em;
}
.sidebar-smart-select {
  width: 100%; padding: 5px 8px;
  background: rgba(255,255,255,.04); border: 1px solid var(--border-color);
  border-radius: 6px; color: var(--text-primary); font-size: .72rem;
  outline: none; cursor: pointer;
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center;
  padding-right: 24px;
}
.sidebar-smart-select:focus { border-color: var(--action-blue); }
.sidebar-smart-select option { background: var(--bg-primary); color: var(--text-primary); }

/* Main content area */
.catalog-main { min-width: 0; }

/* Breadcrumb */
.catalog-breadcrumb {
  display: flex; align-items: center; gap: 4px;
  font-size: .72rem; color: var(--text-muted); margin-bottom: 8px;
}
.bc-sep { font-size: .7rem; color: var(--text-muted); margin: 0 2px; }

/* Title row */
.catalog-title-row {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px; gap: 12px;
}
.catalog-count-badge {
  display: flex; align-items: baseline; gap: 4px; flex-shrink: 0;
  background: rgba(29,78,216,.07); border: 1px solid rgba(29,78,216,.2);
  padding: 5px 14px; border-radius: 8px;
}
.catalog-count-badge strong { font-size: 1.15rem; font-weight: 700; color: var(--text-primary); }
.catalog-count-badge span  { font-size: .7rem; color: var(--text-secondary); }

/* Toolbar (search + sort + view) */
.catalog-toolbar {
  display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap;
}
.catalog-toolbar .catalog-search-input { flex: 1; min-width: 200px; }
.catalog-sort-select {
  padding: 7px 10px; background: var(--glass-bg); border: 1px solid var(--border-color);
  border-radius: 8px; color: var(--text-primary); font-size: .78rem; cursor: pointer;
}
.catalog-view-controls { display: flex; gap: 4px; }
.view-btn {
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  background: var(--glass-bg); border: 1px solid var(--border-color); border-radius: 6px;
  color: var(--text-muted); cursor: pointer; transition: all .15s;
}
.view-btn.active, .view-btn:hover { background: var(--action-blue); border-color: var(--action-blue); color: #fff; }

/* ── Category badge overlay on card image ── */
.card-cat-badge {
  position: absolute; bottom: 6px; left: 6px; z-index: 3;
  padding: 2px 8px; border-radius: 4px;
  font-size: .6rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  pointer-events: none;
}

/* ─── Category palette ─── */
.cat-Drills        { background: #1D4ED8; color: #fff; }
.cat-Taps          { background: #EA580C; color: #fff; }
.cat-End-Mills     { background: #059669; color: #fff; }
.cat-Thread-Mills  { background: #7C3AED; color: #fff; }
.cat-Indexable     { background: #0891B2; color: #fff; }
.cat-Reamers       { background: #B45309; color: #fff; }
.cat-Dies          { background: #BE185D; color: #fff; }
.cat-default       { background: #475569; color: #fff; }

/* OSG storefront conversion layout — source-backed commerce UI */
.catalog-commerce-hero {
  margin-bottom: 14px;
  padding: 18px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  background:
    linear-gradient(120deg, rgba(23, 105, 255, .10), transparent 55%),
    var(--glass-bg);
}

.catalog-commerce-hero .catalog-toolbar { margin-bottom: 0; }
.catalog-commerce-hero .catalog-search-input {
  min-height: 44px;
  padding: 10px 14px;
  border-width: 1px;
  border-color: rgba(23, 105, 255, .28);
  font-size: .86rem;
}

.catalog-layout { grid-template-columns: 240px minmax(0, 1fr); }
.catalog-trust-bar { margin-bottom: 14px; padding: 11px 16px; }
.osg-category-menu { gap: 8px; margin-bottom: 14px; }
.osg-category-button { min-height: 108px; padding: 8px 6px; }
.osg-category-icon { width: 58px; height: 58px; flex-basis: 58px; margin-bottom: 5px; }

.sidebar-header-actions { display: flex; align-items: center; gap: 8px; }
.catalog-filter-close,
.catalog-filter-done,
.catalog-filter-open,
.catalog-filter-scrim { display: none; }

.catalog-card-commerce {
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 10px;
  cursor: pointer;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 314px;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.catalog-card-commerce:hover,
.catalog-card-commerce:focus-within {
  transform: translateY(-2px);
  border-color: rgba(23, 105, 255, .46);
  box-shadow: 0 12px 28px rgba(0, 0, 0, .14);
}
.catalog-card-image {
  width: 100%;
  height: 126px;
  margin-bottom: 9px;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  border: 1px solid rgba(148, 163, 184, .18);
  border-radius: 8px;
  background: #fff;
}
.catalog-card-image img { width: 100%; height: 100%; object-fit: contain; transition: transform .2s ease; }
.catalog-card-commerce:hover .catalog-card-image img { transform: scale(1.035); }
.catalog-card-brand {
  position: absolute;
  top: 7px;
  right: 7px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 6px;
  border: 1px solid #dbeafe;
  border-radius: 6px;
  background: rgba(255, 255, 255, .94);
  color: #1d4ed8;
  font-size: .54rem;
  font-weight: 800;
  letter-spacing: .06em;
}
.catalog-card-brand img { width: 18px; height: 18px; object-fit: contain; }
.catalog-card-name {
  min-height: 34px;
  margin-top: 5px;
  color: var(--text-secondary);
  font-size: .7rem;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.catalog-commercial {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin: 7px 0;
  padding: 7px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.catalog-commercial strong { color: var(--text-primary); font-size: .74rem; }
.catalog-commercial span { color: var(--text-muted); font-size: .64rem; }
.catalog-card-actions { display: grid; grid-template-columns: 1fr auto; gap: 6px; margin-top: auto; }
.catalog-card-actions button {
  min-height: 34px;
  padding: 7px 9px;
  border-radius: 7px;
  font-size: .68rem;
  font-weight: 700;
  cursor: pointer;
}
.catalog-card-quote { border: 1px solid var(--action-blue); background: var(--action-blue); color: #fff; }
.catalog-card-detail { border: 1px solid var(--border-color); background: transparent; color: var(--text-primary); }
.catalog-card-quote:hover { filter: brightness(.92); }
.catalog-card-detail:hover { border-color: var(--action-blue); color: var(--action-blue); }

html[data-theme="light"] .catalog-commerce-hero { background: linear-gradient(120deg, #eff6ff, #fff 62%); }
html[data-theme="light"] .catalog-card-commerce { background: #fff; box-shadow: 0 4px 14px rgba(15, 23, 42, .05); }

@media (max-width: 900px) {
  body.catalog-filter-open { overflow: hidden; }
  .catalog-layout { display: block; }
  .catalog-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1600;
    width: min(340px, calc(100vw - 42px));
    max-height: 100vh;
    overflow-y: auto;
    border-radius: 0 14px 14px 0;
    transform: translateX(-104%);
    transition: transform .2s ease;
    box-shadow: 18px 0 50px rgba(0, 0, 0, .28);
  }
  body.catalog-filter-open .catalog-sidebar { transform: translateX(0); }
  .catalog-filter-scrim {
    position: fixed;
    inset: 0;
    z-index: 1590;
    width: 100%;
    border: 0;
    background: rgba(2, 6, 23, .58);
    cursor: pointer;
  }
  body.catalog-filter-open .catalog-filter-scrim { display: block; }
  .catalog-filter-open {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 8px 13px;
    border: 1px solid var(--action-blue);
    border-radius: 8px;
    background: var(--action-blue);
    color: #fff;
    font-size: .78rem;
    font-weight: 750;
    cursor: pointer;
  }
  .catalog-filter-close {
    display: inline-grid;
    place-items: center;
    width: 30px;
    height: 30px;
    padding: 0;
    border: 1px solid var(--border-color) !important;
    border-radius: 7px;
    color: var(--text-primary) !important;
    font-size: 1.2rem !important;
  }
  .catalog-filter-done {
    position: sticky;
    bottom: 0;
    z-index: 2;
    display: block;
    width: calc(100% - 24px);
    margin: 12px;
    padding: 11px 14px;
    border: 0;
    border-radius: 8px;
    background: var(--action-blue);
    color: #fff;
    font-weight: 750;
    cursor: pointer;
  }
}

@media (max-width: 620px) {
  .catalog-commerce-hero { padding: 13px; }
  .catalog-title-row { align-items: flex-start; }
  .catalog-count-badge { padding: 5px 9px; }
  .catalog-toolbar { align-items: stretch; }
  .catalog-toolbar .catalog-search-input { order: -1; flex-basis: 100%; width: 100%; }
  .catalog-toolbar > div { flex: 1; justify-content: flex-end; }
  .catalog-filter-open { flex: 1; }
  .osg-category-menu { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .osg-category-button { min-height: 98px; }
  .osg-category-icon { width: 50px; height: 50px; flex-basis: 50px; }
  .catalog-trust-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding: 10px; }
  .trust-item { gap: 7px; }
}

/* Catalog family/variant presentation: one commercial product per OSG series. */
.catalog-series-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.catalog-family-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  background: var(--card-bg, var(--glass-bg));
  color: var(--text-primary);
  box-shadow: 0 8px 24px rgba(15, 23, 42, .07);
  cursor: pointer;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.catalog-family-card:hover,
.catalog-family-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--action-blue);
  box-shadow: 0 12px 30px rgba(37, 99, 235, .13);
  outline: none;
}
.catalog-family-image {
  position: relative;
  display: grid;
  place-items: center;
  height: 190px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
  background: #fff;
}
.catalog-family-image > img { width: 100%; height: 100%; object-fit: contain; }
.catalog-family-image .catalog-image-missing { width: 100%; min-height: 150px; }
.catalog-family-image .catalog-card-brand { position: absolute; top: 10px; right: 10px; }
.catalog-family-body { padding: 15px; }
.catalog-family-category {
  color: var(--action-blue);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.catalog-family-body h3 { margin: 4px 0 2px; font-size: 1.18rem; letter-spacing: -.02em; }
.catalog-family-count { margin: 0 0 12px; color: var(--text-secondary); font-size: .75rem; }
.catalog-family-ranges {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
}
.catalog-family-ranges span,
.catalog-family-range-board > div {
  min-width: 0;
  padding: 8px 9px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: color-mix(in srgb, var(--action-blue) 5%, transparent);
}
.catalog-family-ranges small,
.catalog-family-range-board small { display: block; color: var(--text-muted); font-size: .59rem; }
.catalog-family-ranges strong,
.catalog-family-range-board strong { display: block; margin-top: 2px; font-size: .73rem; overflow-wrap: anywhere; }
.catalog-family-material { min-height: 18px; margin: 10px 0 0; color: var(--text-secondary); font-size: .68rem; }
.catalog-family-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 13px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}
.catalog-family-footer > span { color: var(--text-secondary); font-size: .66rem; }
.catalog-family-open,
.catalog-family-back,
.catalog-variant-actions button {
  border: 1px solid var(--action-blue);
  border-radius: 8px;
  background: transparent;
  color: var(--action-blue);
  font-weight: 750;
  cursor: pointer;
}
.catalog-family-open { flex: 0 0 auto; padding: 8px 11px; font-size: .68rem; }
.catalog-variant-layout { grid-column: 1 / -1; }
.catalog-family-selector { width: 100%; }
.catalog-family-back { margin-bottom: 12px; padding: 9px 13px; }
.catalog-family-summary {
  display: grid;
  grid-template-columns: minmax(210px, .72fr) minmax(0, 1.28fr);
  gap: 22px;
  padding: 18px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  background: var(--card-bg, var(--glass-bg));
}
.catalog-family-summary-image {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 230px;
  padding: 14px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: #fff;
}
.catalog-family-summary-image > img { width: 100%; height: 210px; object-fit: contain; }
.catalog-family-summary-image .catalog-image-missing { min-height: 190px; }
.catalog-family-media-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(210px, .8fr) repeat(2, minmax(240px, 1fr));
  gap: 12px;
}
.catalog-family-media {
  min-width: 0;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--surface-1);
}
.catalog-family-media figcaption {
  margin-bottom: 8px;
  color: var(--text-primary);
  font-size: .72rem;
  font-weight: 800;
}
.catalog-family-media.is-product .catalog-card-image-wrap,
.catalog-family-media.is-product > img { width: 100%; height: 260px; object-fit: contain; }
.catalog-family-media.is-drawing img { display: block; width: 100%; height: 220px; object-fit: contain; }
.catalog-family-media-grid.has-source-page { grid-template-columns: minmax(240px, .7fr) minmax(420px, 1.5fr); }
.catalog-family-media.is-source-page a { display: block; max-height: 540px; overflow: auto; background: #fff; }
.catalog-family-media.is-source-page img { display: block; width: 100%; height: auto; }
.catalog-family-summary-copy > span { color: var(--action-blue); font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.catalog-family-summary-copy h2 { margin: 4px 0; font-size: clamp(1.55rem, 3vw, 2.25rem); }
.catalog-family-summary-copy > p { margin: 0 0 14px; color: var(--text-secondary); }
.catalog-family-range-board { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.catalog-variant-heading { display: flex; justify-content: space-between; align-items: flex-end; margin: 22px 0 10px; }
.catalog-variant-heading h3 { margin: 0; font-size: 1.05rem; }
.catalog-variant-heading p { margin: 3px 0 0; color: var(--text-secondary); font-size: .72rem; }
.catalog-variant-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--card-bg, var(--glass-bg));
}
.catalog-variant-table { width: 100%; min-width: 900px; border-collapse: collapse; font-size: .73rem; }
.catalog-variant-table th {
  padding: 11px 10px;
  background: color-mix(in srgb, var(--action-blue) 8%, var(--card-bg, transparent));
  color: var(--text-secondary);
  text-align: left;
  white-space: nowrap;
}
.catalog-variant-table td { padding: 10px; border-top: 1px solid var(--border-color); color: var(--text-primary); }
.catalog-variant-table tbody tr:hover { background: color-mix(in srgb, var(--action-blue) 4%, transparent); }
.catalog-variant-actions { display: flex; gap: 6px; }
.catalog-variant-actions button { padding: 7px 9px; white-space: nowrap; font-size: .65rem; }
.catalog-variant-actions button.is-primary { background: var(--action-blue); color: #fff; }
.catalog-empty-state { grid-column: 1 / -1; padding: 50px; text-align: center; color: var(--text-muted); }

@media (max-width: 1050px) {
  .catalog-series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-family-range-board { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .catalog-series-grid { grid-template-columns: 1fr; gap: 12px; }
  .catalog-family-card { display: grid; grid-template-columns: 118px minmax(0, 1fr); }
  .catalog-family-image { height: 100%; min-height: 190px; padding: 9px; border-bottom: 0; border-right: 1px solid var(--border-color); }
  .catalog-family-image .catalog-card-brand { top: 6px; right: 6px; }
  .catalog-family-ranges { grid-template-columns: 1fr; }
  .catalog-family-footer { align-items: stretch; flex-direction: column; }
  .catalog-family-open { width: 100%; }
  .catalog-family-summary { grid-template-columns: 1fr; gap: 12px; padding: 12px; }
  .catalog-family-summary-image { min-height: 180px; }
  .catalog-family-summary-image > img { height: 170px; }
  .catalog-family-media-grid { grid-template-columns: 1fr; }
  .catalog-family-media-grid.has-source-page { grid-template-columns: 1fr; }
  .catalog-family-media.is-product .catalog-card-image-wrap,
  .catalog-family-media.is-product > img,
  .catalog-family-media.is-drawing img { height: auto; max-height: 260px; }
  .catalog-family-range-board { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}