/* ==========================================================================
   goindustrialsupplies.com — Frank P. McCartin Co., Inc. (Est. 1927)
   Centennial Multi-Trade Industrial Supply, Hard-to-Find Parts & Public Procurement
   ========================================================================== */

:root {
  --c-primary: #C4E2C6;
  --c-secondary: #1A4645;
  --c-teal: #266867;
  --c-accent: #01638A;
  --c-accent-dark: #014d6b;
  --c-text: #475569;
  --c-heading: #0F172A;
  --c-dark: #0A1618;
  --c-gray: #F8FAFC;
  --c-header: #FFFFFF;
  --c-border: #CBD5E1;
  --c-sep-blue: #3F6FA7;
  --c-sep-green: #3FA752;
  --c-white: #FFFFFF;

  --f-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-label: "Saira Condensed", "Arial Narrow", sans-serif;
  --f-mono: "JetBrains Mono", monospace;

  --container: 1280px;
  --radius: 4px;
  --shadow: 0 10px 30px rgba(10, 22, 24, .12);
  --header-h: 112px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

.font-display { font-family: var(--f-label); }
.font-mono { font-family: var(--f-mono); }
.font-sans { font-family: var(--f-body); }

/* Industrial Blueprint Grid */
.bg-blueprint-grid {
  background-size: 36px 36px;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

.bg-blueprint-light {
  background-size: 36px 36px;
  background-image:
    linear-gradient(to right, rgba(1, 99, 138, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(1, 99, 138, 0.05) 1px, transparent 1px);
}

/* Technical Cards */
.tech-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.tech-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -8px rgba(10, 22, 24, 0.12), 0 6px 12px -4px rgba(1, 99, 138, 0.08);
  border-color: rgba(1, 99, 138, 0.45);
}

/* Sticky Header & 5-Panel Institutional Megamenu Spatial Anchor Architecture */
header.sticky {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 50;
}

@media (min-width: 1024px) {
  .nav-group-menu {
    position: static !important;
    height: 100%;
    display: flex;
    align-items: center;
  }
  .nav-group-menu:hover > .megamenu-panel-unified,
  .nav-group-menu:focus-within > .megamenu-panel-unified,
  .nav-group-menu.is-open > .megamenu-panel-unified,
  .megamenu-panel-unified:hover,
  .megamenu-panel-unified.is-open {
    display: flex !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
  }
}

.megamenu-panel-unified {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 1080px;
  max-width: calc(100vw - 32px);
  min-height: 410px;
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  border-top: 3px solid #ea580c;
  border-radius: 0 0 12px 12px;
  box-shadow: 0 24px 60px -12px rgba(10, 37, 71, 0.32), 0 0 0 1px rgba(10, 37, 71, 0.08);
  display: none;
  flex-direction: column;
  justify-content: space-between;
  z-index: 100;
  overflow: visible;
  white-space: normal;
  pointer-events: auto;
}

/* Unclipped invisible hover bridge spanning the full megamenu width between navbar and panel */
.megamenu-panel-unified::before {
  content: "";
  position: absolute;
  top: -22px;
  left: 0;
  right: 0;
  height: 25px;
  background: transparent;
  pointer-events: auto;
}

.nav-group-menu.is-open > button,
.nav-group-menu > button[aria-expanded="true"] {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.15);
  border-bottom: 2px solid #ea580c;
}

.nav-group-menu.is-open > button svg,
.nav-group-menu > button[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.megamenu-grid-3col {
  display: grid;
  grid-template-columns: 1fr 1fr 310px;
  gap: 1.5rem;
  padding: 1.35rem 1.5rem 1.15rem;
  flex: 1;
}

@media (min-width: 1024px) and (max-width: 1160px) {
  .megamenu-panel-unified {
    width: calc(100vw - 32px);
  }
  .megamenu-grid-3col {
    grid-template-columns: 1fr 1fr 270px;
    gap: 1.15rem;
    padding: 1.15rem 1.25rem;
  }
}

@media (max-width: 1023px) {
  .megamenu-grid-3col {
    grid-template-columns: 1fr;
  }
}

.megamenu-bottom-bar {
  background-color: #f8fafc;
  border-top: 1px solid #e2e8f0;
  border-radius: 0 0 11px 11px;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 12px;
}

/* Engineering & Procurement Tables */
.eng-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.eng-table th {
  background: #0A1618;
  color: #ffffff;
  text-align: left;
  padding: 12px 16px;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.eng-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #e2e8f0;
  color: #1e293b;
  vertical-align: top;
}
.eng-table tr:nth-child(even) td {
  background: #f8fafc;
}
.eng-table tr:hover td {
  background: #f0f9ff;
}

/* Legacy / Progressive Utility Classes */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 860px; }
.center { text-align: center; }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--c-accent); color: #fff; padding: 8px 14px;
}
.skip-link:focus { left: 8px; top: 8px; color: #fff; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }

.btn {
  display: inline-block;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--f-body);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: 11px 22px;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .2s, transform .2s;
}
.btn:hover { background: var(--c-accent-dark); color: #fff; }
.btn-block { display: block; width: 100%; padding: 14px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }

.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

/* Accordion */
.accordion { display: grid; gap: 14px; }
.acc-item { border: 1px solid var(--c-border); border-radius: 6px; background: #fff; overflow: hidden; }
.acc-item summary {
  list-style: none; cursor: pointer; padding: 16px 50px 16px 20px; position: relative;
  font-weight: 700; font-size: 16px; color: var(--c-heading); transition: background .2s, color .2s;
}
.acc-item summary::-webkit-details-marker { display: none; }
.acc-item summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  font-size: 22px; font-weight: 600; color: var(--c-accent);
}
.acc-item[open] { border-color: var(--c-secondary); }
.acc-item[open] summary { background: var(--c-secondary); color: #fff; }
.acc-item[open] summary::after { content: "\2212"; color: var(--c-primary); }
.acc-body { padding: 18px 20px 14px; font-size: 14.5px; color: #334155; }
.acc-body ul { padding-left: 20px; margin: 0 0 1em; list-style: disc; }
.acc-body li { margin-bottom: 8px; }

/* A-Z Line Card Pills */
.az-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  border-radius: 4px;
  font-family: var(--f-mono);
  font-weight: 700;
  font-size: 13px;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #0f172a;
  cursor: pointer;
  transition: all 0.15s ease;
}
.az-pill:hover,
.az-pill.is-active {
  background: #01638A;
  color: #ffffff;
  border-color: #01638A;
}
.az-pill.is-disabled {
  background: #f1f5f9;
  color: #94a3b8;
  border-color: #e2e8f0;
  cursor: not-allowed;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}