/* ==========================================================================
   passivation-stainless-steel.css
   Scope: .gc-pass-page  — 100% isolated, zero global leakage
   Brand: #0052cc primary / #0f2747 navy / #00a3c4 accent
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
.gc-pass-page {
  --gc-blue: #0052cc;
  --gc-navy: #0f2747;
  --gc-accent: #00a3c4;
  --gc-bg: #ffffff;
  --gc-bg-alt: #f8fafc;
  --gc-border: #e2e8f0;
  --gc-text: #1e293b;
  --gc-text-muted: #64748b;
  --gc-success: #16a34a;
  --gc-warn: #d97706;
  --gc-danger: #dc2626;
  --gc-radius: 8px;
  --gc-radius-lg: 12px;
  --gc-shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --gc-shadow-md: 0 4px 12px rgba(0,0,0,.10);
  --gc-shadow-lg: 0 10px 30px rgba(0,0,0,.12);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--gc-text);
  line-height: 1.7;
  font-size: 16px;
}

/* ---------- Layout ---------- */
.gc-pass-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.gc-pass-section {
  padding: 48px 0;
}
.gc-pass-section:first-of-type {
  padding-top: 32px;
}

/* ---------- Hero ---------- */
.gc-pass-hero {
  background: linear-gradient(135deg, var(--gc-navy) 0%, #1a365d 50%, #234e82 100%);
  color: #fff;
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}
.gc-pass-hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,162,196,.15) 0%, transparent 70%);
  border-radius: 50%;
}
.gc-pass-hero-tag {
  display: inline-block;
  background: rgba(0,162,196,.2);
  color: var(--gc-accent);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.gc-pass-hero h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 16px;
  max-width: 700px;
  color:#ffffff;
}
.gc-pass-hero-sub {
  font-size: 1.05rem;
  opacity: .9;
  margin: 0 0 24px;
  max-width: 650px;
  line-height: 1.6;
}

/* CTA Buttons */
.gc-pass-cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.gc-pass-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .2s ease;
  line-height: 1.4;
}
.gc-pass-btn--primary {
  background: var(--gc-blue);
  color: #fff;
  border-color: var(--gc-blue);
}
.gc-pass-btn--primary:hover {
  background: #003d99;
  border-color: #003d99;
}
.gc-pass-btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.5);
}
.gc-pass-btn--ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: #fff;
}

/* Hero Grid (text left + image right) */
.gc-pass-hero-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 36px;
  align-items: center;
}
.gc-pass-hero-left {
  /* text content side */
}
.gc-pass-hero-right {
  position: relative;
}
.gc-pass-hero-right img {
  width: 100%;
  height: auto;
  border-radius: var(--gc-radius-lg);
  box-shadow: 0 12px 40px rgba(0,0,0,.25), 0 0 0 1px rgba(255,255,255,.1);
  object-fit: cover;
}

/* Hero Meta */
.gc-pass-hero-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: .85rem;
  opacity: .85;
}
.gc-pass-hero-meta span {
  padding-right: 20px;
  border-right: 1px solid rgba(255,255,255,.25);
}
.gc-pass-hero-meta span:last-child {
  border-right: none;
  padding-right: 0;
}

/* Spec Card */
.gc-pass-spec {
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--gc-radius-lg);
  padding: 28px;
  margin-top: 28px;
}
.gc-pass-spec-head {
  font-weight: 700;
  font-size: .95rem;
  margin-bottom: 20px;
  color: var(--gc-accent);
}
.gc-pass-spec-head span {
  font-weight: 400;
  font-size: .8rem;
  color: rgba(255,255,255,.6);
}
.gc-pass-spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}
.gc-pass-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--gc-radius);
  padding: 14px 16px;
  transition: background .15s ease;
}
.gc-pass-spec-item:hover {
  background: rgba(255,255,255,.09);
}
.gc-pass-spec-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,162,196,.2);
  color: var(--gc-accent);
  border-radius: 8px;
  font-weight: 800;
  font-size: .78rem;
  line-height: 1;
}
.gc-pass-spec-body b {
  display: block;
  font-size: .82rem;
  color: rgba(255,255,255,.55);
  font-weight: 500;
  margin-bottom: 3px;
}
.gc-pass-spec-body span {
  display: block;
  font-size: .92rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.35;
}
.gc-pass-spec-note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: .78rem;
  color: rgba(255,255,255,.5);
  font-style: italic;
}

/* ---------- Sticky Sub-Nav ---------- */
.gc-pass-subnav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--gc-bg);
  border-bottom: 1px solid var(--gc-border);
  box-shadow: var(--gc-shadow-sm);
}
.gc-pass-subnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.gc-pass-subnav-inner::-webkit-scrollbar { display: none; }
.gc-pass-subnav-inner a {
  display: block;
  padding: 14px 12px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--gc-text-muted);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all .2s ease;
}
.gc-pass-subnav-inner a:hover,
.gc-pass-subnav-inner a.gc-pass-subnav-active {
  color: var(--gc-blue);
  border-bottom-color: var(--gc-blue);
}
.gc-pass-subnav-cta {
  margin-left: auto;
  padding: 8px 20px;
  background: var(--gc-blue);
  color: #fff !important;
  border: none;
  border-radius: 6px;
  font-weight: 700;
  font-size: .82rem;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}
.gc-pass-subnav-cta:hover {
  background: #003d99;
}

/* ---------- Typography ---------- */
.gc-pass-kicker {
  display: inline-block;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gc-accent);
  margin-bottom: 8px;
}
.gc-pass-h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  color: var(--gc-navy);
  margin: 0 0 16px;
  line-height: 1.25;
}
.gc-pass-h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gc-navy);
  margin: 28px 0 12px;
}
.gc-pass-lede {
  font-size: 1.05rem;
  color: var(--gc-text-muted);
  margin-bottom: 20px;
  line-height: 1.65;
}

/* ---------- Callout Boxes ---------- */
.gc-pass-callout {
  background: var(--gc-bg-alt);
  border-left: 4px solid var(--gc-blue);
  border-radius: 0 var(--gc-radius) var(--gc-radius) 0;
  padding: 16px 20px;
  margin: 20px 0;
  font-size: .95rem;
}
.gc-pass-callout--accent {
  border-left-color: var(--gc-accent);
  background: linear-gradient(135deg, rgba(0,162,196,.06), rgba(0,82,204,.04));
}
.gc-pass-callout--warn {
  border-left-color: var(--gc-warn);
  background: linear-gradient(135deg, rgba(217,119,6,.06), transparent);
}

/* ---------- Chips ---------- */
.gc-pass-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}
.gc-pass-chip {
  display: inline-block;
  background: var(--gc-bg-alt);
  border: 1px solid var(--gc-border);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: .85rem;
}

/* ---------- Process Pipeline ---------- */
.gc-pass-pipe {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin: 24px 0;
}
.gc-pass-pipe-step {
  background: var(--gc-bg);
  border: 1px solid var(--gc-border);
  border-radius: var(--gc-radius);
  padding: 14px 16px;
  font-size: .88rem;
}
.gc-pass-pipe-step b {
  display: block;
  color: var(--gc-blue);
  font-size: .95rem;
  margin-bottom: 4px;
}
.gc-pass-pipe-step span {
  color: var(--gc-text-muted);
  font-size: .82rem;
}

/* ---------- Two-Column Grid ---------- */
.gc-pass-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}
@media (max-width: 768px) {
  .gc-pass-grid-2col { grid-template-columns: 1fr; }
}

/* ---------- Columns ---------- */
.gc-pass-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin: 20px 0;
}
@media (max-width: 768px) {
  .gc-pass-cols { grid-template-columns: 1fr; }
}
.gc-pass-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gc-navy);
  margin: 0 0 8px;
}
.gc-pass-col p {
  font-size: .93rem;
  color: var(--gc-text-muted);
  margin: 0 0 14px;
  line-height: 1.6;
}
.gc-pass-col ul {
  margin: 0 0 14px;
  padding-left: 18px;
  font-size: .9rem;
  color: var(--gc-text-muted);
}
.gc-pass-col ul li {
  margin-bottom: 4px;
}

/* ---------- Decision Guide ---------- */
.gc-pass-decision {
  background: var(--gc-bg-alt);
  border-radius: var(--gc-radius);
  padding: 20px 24px;
  margin: 16px 0;
}
.gc-pass-decision p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.6;
}
.gc-pass-arrow {
  color: var(--gc-accent);
  font-weight: 700;
  margin: 0 6px;
}

/* ---------- Tables ---------- */
.gc-pass-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: .9rem;
  overflow: hidden;
  border-radius: var(--gc-radius);
  box-shadow: 0 0 0 1px var(--gc-border);
}
.gc-pass-table thead th {
  background: var(--gc-navy);
  color: #fff;
  font-weight: 700;
  font-size: .85rem;
  text-align: left;
  padding: 12px 16px;
}
.gc-pass-table tbody td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--gc-border);
  font-size: .88rem;
}
.gc-pass-table tbody tr:last-child td {
  border-bottom: none;
}
.gc-pass-table tbody tr:hover td {
  background: var(--gc-bg-alt);
}

/* ---------- Fix Grid ---------- */
.gc-pass-fix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin: 20px 0;
}
.gc-pass-fix {
  background: var(--gc-bg-alt);
  border: 1px solid var(--gc-border);
  border-radius: var(--gc-radius);
  padding: 16px;
}
.gc-pass-fix b {
  display: block;
  font-size: .92rem;
  color: var(--gc-navy);
  margin-bottom: 4px;
}
.gc-pass-fix span {
  font-size: .82rem;
  color: var(--gc-text-muted);
}

/* ---------- Chain / Traceability ---------- */
.gc-pass-chain {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 24px 0;
}
.gc-pass-chain-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--gc-bg);
  border: 1px solid var(--gc-border);
  border-radius: var(--gc-radius);
  padding: 12px 16px;
}
.gc-pass-chain-num {
  width: 28px;
  height: 28px;
  background: var(--gc-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .8rem;
  flex-shrink: 0;
}
.gc-pass-chain-body b {
  display: block;
  font-size: .9rem;
  color: var(--gc-navy);
}
.gc-pass-chain-body span {
  font-size: .8rem;
  color: var(--gc-text-muted);
}

/* ---------- Checklist ---------- */
.gc-pass-checklist {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 10px;
  margin: 20px 0;
}
.gc-pass-check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--gc-bg);
  border: 1px solid var(--gc-border);
  border-radius: var(--gc-radius);
}
.gc-pass-tick {
  width: 24px;
  height: 24px;
  background: var(--gc-success);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  flex-shrink: 0;
  font-weight: 700;
}
.gc-pass-check-item b {
  display: block;
  font-size: .9rem;
  color: var(--gc-navy);
}
.gc-pass-check-item span {
  font-size: .8rem;
  color: var(--gc-text-muted);
}

/* ---------- Code Block ---------- */
.gc-pass-code {
  background: var(--gc-navy);
  color: #e2e8f0;
  border-radius: var(--gc-radius);
  padding: 20px 24px;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: .85rem;
  line-height: 1.7;
  overflow-x: auto;
  margin: 16px 0;
}
.gc-pass-code .gc-key {
  color: var(--gc-accent);
}
.gc-pass-code .gc-comm {
  color: #94a3b8;
  font-style: italic;
}

/* ---------- FAQ ---------- */
.gc-pass-faq details {
  border: 1px solid var(--gc-border);
  border-radius: var(--gc-radius);
  margin-bottom: 8px;
  overflow: hidden;
}
.gc-pass-faq summary {
  padding: 14px 20px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  background: var(--gc-bg);
  transition: background .15s ease;
  user-select: none;
}
.gc-pass-faq summary:hover {
  background: var(--gc-bg-alt);
}
.gc-pass-answer {
  padding: 14px 20px;
  font-size: .93rem;
  color: var(--gc-text-muted);
  line-height: 1.65;
  border-top: 1px solid var(--gc-border);
  background: var(--gc-bg);
}

/* ---------- Final CTA ---------- */
.gc-pass-final {
  text-align: center;
  padding: 56px 24px;
  background: linear-gradient(135deg, var(--gc-bg-alt), #fff);
  border-top: 1px solid var(--gc-border);
  margin-top: 40px;
}
.gc-pass-final p {
  font-size: 1.05rem;
  color: var(--gc-text-muted);
  margin: 0 auto 24px;
  max-width: 650px;
}

/* ---------- Footer ---------- */
.gc-pass-footer {
  text-align: center;
  padding: 24px;
  font-size: .8rem;
  color: var(--gc-text-muted);
  border-top: 1px solid var(--gc-border);
  margin-top: 40px;
}
.gc-pass-footer a {
  color: var(--gc-blue);
  text-decoration: none;
}
.gc-pass-footer a:hover {
  text-decoration: underline;
}

/* ========== MODAL (#gcqModal) ========== */
.gc-pass-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.gc-pass-modal:not([hidden]) {
  display: flex;
}
.gc-pass-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
}
.gc-pass-modal-dialog {
  position: relative;
  background: var(--gc-bg);
  border-radius: var(--gc-radius-lg);
  box-shadow: var(--gc-shadow-lg);
  width: min(94vw, 960px);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: gcPassModalIn .2s ease-out;
}
@keyframes gcPassModalIn {
  from { transform: translateY(20px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}
.gc-pass-modal-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--gc-text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all .15s ease;
}
.gc-pass-modal-close:hover {
  color: var(--gc-danger);
  background: var(--gc-bg-alt);
}
.gc-pass-modal-head {
  padding: 24px 28px 16px;
  border-bottom: 1px solid var(--gc-border);
}
.gc-pass-modal-head h3 {
  margin: 0 0 6px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--gc-navy);
}
.gc-pass-modal-head p {
  margin: 0;
  font-size: .88rem;
  color: var(--gc-text-muted);
}
.gc-pass-modal-body {
  padding: 0;
  min-height: 480px;
  flex: 1;
}
.gc-pass-modal-body iframe {
  width: 100%;
  height: 580px;
  border: none;
  display: block;
}
.gc-pass-modal-foot {
  padding: 14px 28px;
  border-top: 1px solid var(--gc-border);
  font-size: .84rem;
  color: var(--gc-text-muted);
  text-align: center;
}
.gc-pass-modal-foot a {
  color: var(--gc-blue);
  text-decoration: none;
  font-weight: 600;
}
.gc-pass-modal-foot a:hover {
  text-decoration: underline;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .gc-pass-hero { padding: 36px 0 28px; }
  .gc-pass-hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .gc-pass-hero-right { order: -1; }
  .gc-pass-hero-right img { border-radius: var(--gc-radius); }
  .gc-pass-hero h2 { font-size: 1.5rem; }
  .gc-pass-hero-meta { flex-direction: column; gap: 6px; }
  .gc-pass-hero-meta span { border-right: none; padding-right: 0; }
  .gc-pass-spec { margin-top: 20px; padding: 20px; }
  .gc-pass-spec-grid { grid-template-columns: 1fr; }
  .gc-pass-section { padding: 32px 0; }
  .gc-pass-final { padding: 36px 16px; }
  .gc-pass-pipe { grid-template-columns: 1fr; }
  .gc-pass-fix-grid { grid-template-columns: 1fr; }
  .gc-pass-checklist { grid-template-columns: 1fr; }
  .gc-pass-cols { grid-template-columns: 1fr; }
  .gc-pass-dialog { width: 95vw; margin: 16px; }
  .gc-pass-modal-body iframe { height: 440px; }
}