/* ==========================================================================
   H&K WIRELESS — theme.css
   Loaded AFTER bootstrap.min.css. Bootstrap provides the grid, forms,
   navbar/collapse behavior, and utility classes; everything visual is
   overridden here so the site doesn't read as a stock Bootstrap template.
   ========================================================================== */

:root {
  /* ---- Brand tokens ---- */
  --ink: #10172A;
  --ink-2: #1A2340;
  --ink-3: #262F52;
  --paper: #F7F5F0;
  --paper-2: #EDE9E0;
  --signal: #F2611A;
  --signal-deep: #C94A0F;
  --signal-soft: #FCE3D3;
  --steel: #5B6472;
  --steel-light: #9AA3B2;
  --ink-text: #1B2230;
  --line: rgba(16, 23, 42, 0.12);
  --line-dark: rgba(247, 245, 240, 0.14);
  --radius-s: 4px;
  --radius-m: 10px;
  --radius-l: 18px;

  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  /* ---- Bootstrap variable overrides (Bootstrap 5.3 CSS-var driven) ---- */
  --bs-body-font-family: var(--font-sans);
  --bs-body-color: var(--ink-text);
  --bs-body-bg: var(--paper);
  --bs-primary: var(--signal);
  --bs-primary-rgb: 242, 97, 26;
  --bs-link-color: var(--signal-deep);
  --bs-link-hover-color: var(--ink);
  --bs-border-color: var(--line);
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); color: var(--ink-text); background: var(--paper); padding-top: 84px; }
img, svg { max-width: 100%; }

h1, h2, h3, .display-serif {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.12;
  color: var(--ink);
}
h4, h5, h6 { font-family: var(--font-sans); font-weight: 600; color: var(--ink); }

.lede { font-size: 1.08rem; color: var(--steel); max-width: 58ch; }
.section--dark .lede { color: var(--steel-light); }

a { color: var(--signal-deep); }
a:hover { color: var(--ink); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--signal-deep);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.eyebrow::before { content: ''; width: 16px; height: 1px; background: var(--signal-deep); }
.section--dark .eyebrow, .section--dark .eyebrow::before { color: var(--signal); background: var(--signal); }

/* ---------- Layout rhythm ---------- */
.section { padding: 92px 0; }
.section--tight { padding: 60px 0; }
.section--dark { background: var(--ink); color: var(--paper); }
.section--alt { background: var(--paper-2); }
.section-head { margin-bottom: 48px; }
.section-head .lede { margin-top: 12px; }

/* ---------- Navbar ---------- */
.navbar-hk {
  background: rgba(16, 23, 42, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding-top: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-dark);
}
.navbar-hk .navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--paper);
  letter-spacing: 0.01em;
}
.navbar-hk .navbar-brand small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  color: var(--steel-light);
  margin-top: 2px;
}
.navbar-hk .nav-link {
  color: var(--steel-light);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 10px 16px !important;
}
.navbar-hk .nav-link:hover, .navbar-hk .nav-link.active { color: var(--paper); }
.navbar-hk .nav-link.active { position: relative; }
.navbar-hk .btn-signal-nav { margin-left: 8px; padding: 0.6rem 1.2rem; font-size: 0.88rem; }
.navbar-toggler { border-color: var(--line-dark); padding: 6px 10px; }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon { filter: invert(1) grayscale(1) brightness(2); }
.signal-mark { display: inline-flex; align-items: flex-end; gap: 3px; height: 16px; }
.signal-mark span { width: 3px; background: var(--signal); border-radius: 1px; display: block; }
.signal-mark span:nth-child(1) { height: 40%; }
.signal-mark span:nth-child(2) { height: 65%; }
.signal-mark span:nth-child(3) { height: 100%; }

@media (max-width: 991.98px) {
  .navbar-collapse { background: var(--ink); margin-top: 16px; border-radius: var(--radius-m); padding: 8px 18px 18px; }
  .navbar-hk .nav-link { border-bottom: 1px solid var(--line-dark); padding: 14px 4px !important; }
  .navbar-hk .btn-signal-nav { margin: 14px 0 4px; width: 100%; text-align: center; }
}

/* ---------- Buttons ---------- */
.btn { font-weight: 600; border-radius: var(--radius-s); padding: 0.75rem 1.4rem; font-size: 0.94rem; }
.btn-signal { background: var(--signal); border-color: var(--signal); color: #fff; }
.btn-signal:hover { background: var(--signal-deep); border-color: var(--signal-deep); color: #fff; }
.btn-outline-light-hk { border: 1px solid var(--line-dark); color: var(--paper); background: transparent; }
.btn-outline-light-hk:hover { border-color: var(--signal); color: var(--signal); }
.btn-outline-dark-hk { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn-outline-dark-hk:hover { border-color: var(--signal-deep); color: var(--signal-deep); }

/* ---------- Hero ---------- */
.hero { background: var(--ink); color: var(--paper); padding: 104px 0 88px; position: relative; overflow: hidden; border-bottom: 1px solid var(--line-dark); }
.hero h1 { color: var(--paper); font-size: clamp(2.3rem, 4vw, 3.6rem); margin: 16px 0 20px; }
.hero .lede { font-size: 1.12rem; }
.hero-stats { display: flex; gap: 30px; margin-top: 42px; flex-wrap: wrap; }
.hero-stats div { border-left: 2px solid var(--signal); padding-left: 12px; }
.hero-stats strong { display: block; font-family: var(--font-serif); font-size: 1.7rem; color: var(--paper); }
.hero-stats span { font-family: var(--font-mono); font-size: 0.68rem; color: var(--steel-light); letter-spacing: 0.05em; }

/* Engineered network-diagram illustration (not a decorative gradient blob) */
.net-diagram { width: 100%; height: auto; }
.net-diagram .nd-line { stroke: rgba(247,245,240,0.28); stroke-width: 1; fill: none; }
.net-diagram .nd-line-dash { stroke: rgba(247,245,240,0.22); stroke-width: 1; stroke-dasharray: 2 5; fill: none; }
.net-diagram .nd-node { fill: var(--ink); stroke: var(--signal); stroke-width: 1.4; }
.net-diagram .nd-node-fill { fill: var(--signal); }
.net-diagram text { font-family: var(--font-mono); font-size: 8px; fill: var(--steel-light); letter-spacing: 0.02em; }
.net-diagram .nd-label-strong { fill: var(--paper); }

/* ---------- Photo placeholder blocks (site awaits real client photography) ---------- */
.photo-placeholder {
  background: linear-gradient(155deg, var(--ink-2), var(--ink));
  border: 1px dashed var(--line-dark);
  border-radius: var(--radius-m);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  color: var(--steel-light);
}
.photo-placeholder svg { width: 34px; height: 34px; margin-bottom: 12px; opacity: 0.7; }
.photo-placeholder span { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; }
.photo-placeholder.light { background: var(--paper-2); border-color: var(--line); color: var(--steel); }

/* ---------- Cards ---------- */
.card-hk {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 30px;
  height: 100%;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.card-hk:hover { border-color: var(--signal-deep); transform: translateY(-3px); box-shadow: 0 16px 32px rgba(16,23,42,0.09); }
.card-hk .icon-tile { width: 48px; height: 48px; border-radius: var(--radius-s); background: var(--paper-2); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.card-hk .icon-tile svg { width: 24px; height: 24px; stroke: var(--ink); }
.card-hk h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card-hk p { color: var(--steel); font-size: 0.94rem; margin-bottom: 0; }
.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.05em; color: var(--signal-deep); text-transform: uppercase; text-decoration: none; }
.card-link svg { width: 13px; height: 13px; transition: transform 0.15s ease; }
.card-hk:hover .card-link svg { transform: translateX(3px); }

.section--dark .icon-tile { background: var(--ink-2); }
.section--dark .icon-tile svg { stroke: var(--signal); }

/* ---------- Detail template (shared by Service / Industry / Case Study pages) ---------- */
.detail-banner { background: var(--ink); color: var(--paper); padding: 60px 0 52px; border-bottom: 1px solid var(--line-dark); }
.detail-banner .breadcrumb-hk { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.04em; color: var(--steel-light); margin-bottom: 18px; }
.detail-banner .breadcrumb-hk a { color: var(--steel-light); text-decoration: none; }
.detail-banner .breadcrumb-hk a:hover { color: var(--signal); }
.detail-banner h1 { max-width: 24ch; }
.detail-meta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.detail-meta span { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.05em; text-transform: uppercase; border: 1px solid var(--line-dark); color: var(--steel-light); padding: 6px 12px; border-radius: 100px; }

.detail-block { padding: 56px 0; border-bottom: 1px solid var(--line); }
.detail-block:last-of-type { border-bottom: none; }
.detail-block h2 { font-size: 1.6rem; margin-bottom: 18px; }
.detail-block .block-label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--steel); margin-bottom: 10px; display: block; }

.deliverable-list { list-style: none; padding: 0; margin: 0; }
.deliverable-list li { display: flex; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 0.95rem; }
.deliverable-list li:first-child { border-top: none; }
.deliverable-list svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--signal-deep); margin-top: 2px; }

/* ---------- Case study cards / filter ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-chip {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.03em;
  border: 1px solid var(--line); background: #fff; color: var(--steel);
  padding: 9px 16px; border-radius: 100px; cursor: pointer; transition: all 0.15s ease;
}
.filter-chip.active, .filter-chip:hover { border-color: var(--ink); color: var(--ink); background: var(--paper-2); }
.filter-chip.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.case-card { display: none; }
.case-card.visible { display: flex; }
.case-card .tag { font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; background: var(--signal-soft); color: var(--signal-deep); padding: 4px 10px; border-radius: 100px; display: inline-block; margin-bottom: 12px; }
.case-metrics-row { display: flex; gap: 26px; margin-top: 18px; flex-wrap: wrap; }
.case-metrics-row div strong { display: block; font-family: var(--font-serif); font-size: 1.4rem; color: var(--ink); }
.case-metrics-row div span { font-family: var(--font-mono); font-size: 0.66rem; color: var(--steel); text-transform: uppercase; letter-spacing: 0.04em; }

/* ---------- Insights list ---------- */
.insight-row { display: grid; grid-template-columns: 130px 1fr auto; gap: 24px; align-items: center; padding: 24px 0; border-top: 1px solid var(--line); }
.insight-row:last-child { border-bottom: 1px solid var(--line); }
.insight-row time { font-family: var(--font-mono); font-size: 0.76rem; color: var(--steel); }
.insight-row h3 { font-size: 1.1rem; margin-bottom: 4px; }
.insight-row .tag-line { font-family: var(--font-mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--signal-deep); }
.insight-row .arrow { width: 16px; height: 16px; color: var(--steel); }
@media (max-width: 700px) { .insight-row { grid-template-columns: 1fr; gap: 6px; } }

/* ---------- Team ---------- */
.team-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-m); padding: 26px; text-align: center; height: 100%; }
.team-card .avatar-photo { width: 88px; height: 88px; border-radius: 50%; overflow: hidden; margin: 0 auto 16px; border: 3px solid var(--paper-2); position: relative; }
.team-card .avatar-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 12%; transform: scale(1.8); transform-origin: center 18%; display: block; }
.team-card h3 { font-size: 1rem; margin-bottom: 2px; }
.team-card .role { font-family: var(--font-mono); font-size: 0.68rem; color: var(--signal-deep); text-transform: uppercase; letter-spacing: 0.04em; display: block; margin-bottom: 10px; }
.team-card p { font-size: 0.86rem; color: var(--steel); margin: 0; }

/* ---------- Certifications / partners strip ---------- */
.cert-pill { font-family: var(--font-mono); font-size: 0.78rem; border: 1px solid var(--line); border-radius: 100px; padding: 9px 16px; color: var(--steel); display: inline-block; }

/* ---------- Values / approach steps ---------- */
.step-row { display: flex; gap: 22px; padding: 26px 0; border-top: 1px solid var(--line-dark); }
.step-row:last-child { border-bottom: 1px solid var(--line-dark); }
.step-row .num { font-family: var(--font-mono); color: var(--signal); font-size: 0.85rem; padding-top: 4px; flex-shrink: 0; width: 34px; }
.step-row h3 { color: var(--paper); font-size: 1.15rem; margin-bottom: 8px; }
.step-row p { color: var(--steel-light); max-width: 62ch; margin: 0; }

/* ---------- Forms ---------- */
.form-hk { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-l); padding: 42px; }
.form-hk .form-label { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink); }
.form-hk .form-control, .form-hk .form-select {
  border-color: var(--line); border-radius: var(--radius-s); padding: 0.7rem 0.85rem; font-size: 0.95rem; background: var(--paper);
}
.form-hk .form-control:focus, .form-hk .form-select:focus {
  border-color: var(--signal-deep); box-shadow: 0 0 0 0.2rem rgba(242,97,26,0.14); background: #fff;
}
.form-hk textarea.form-control { min-height: 120px; }
.opt-in-block { background: var(--paper-2); border-radius: var(--radius-s); padding: 18px 20px; margin-top: 6px; }
.opt-in-block .form-check-input { margin-top: 4px; width: 18px; height: 18px; }
.opt-in-block .form-check-input:checked { background-color: var(--signal-deep); border-color: var(--signal-deep); }
.opt-in-block label { font-size: 0.85rem; color: var(--steel); line-height: 1.6; }
.form-success { display: none; text-align: center; padding: 50px 20px; }
.form-success.visible { display: block; }
.form-success svg { width: 52px; height: 52px; color: var(--signal-deep); margin: 0 auto 18px; }

/* ---------- Careers ---------- */
.job-row { display: flex; justify-content: space-between; align-items: center; gap: 18px; padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--radius-m); margin-bottom: 14px; flex-wrap: wrap; background: #fff; }
.job-row .meta { display: flex; gap: 14px; margin-top: 6px; flex-wrap: wrap; }
.job-row .meta span { font-family: var(--font-mono); font-size: 0.72rem; color: var(--steel); text-transform: uppercase; letter-spacing: 0.03em; }
.perk { text-align: center; padding: 26px 16px; }
.perk .icon-tile { margin: 0 auto 14px; }
.perk h3 { font-size: 0.98rem; margin-bottom: 6px; }
.perk p { font-size: 0.84rem; color: var(--steel); margin: 0; }

/* ---------- Legal pages ---------- */
.legal-updated { font-family: var(--font-mono); font-size: 0.76rem; color: var(--steel); display: block; margin-bottom: 36px; }
.legal-content { max-width: 760px; }
.legal-content h2 { font-size: 1.25rem; margin-top: 42px; margin-bottom: 14px; }
.legal-content h2:first-of-type { margin-top: 0; }
.legal-content p, .legal-content li { color: var(--steel); font-size: 0.96rem; line-height: 1.75; }
.legal-content p { margin-bottom: 15px; }
.legal-content ul, .legal-content ol { padding-left: 22px; margin-bottom: 16px; }
.legal-content li { margin-bottom: 8px; }
.legal-content strong { color: var(--ink); }
.legal-toc { background: var(--paper-2); border-radius: var(--radius-m); padding: 24px 26px; margin-bottom: 42px; }
.legal-toc span.label { font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--steel); display: block; margin-bottom: 10px; }
.legal-toc ol { columns: 2; column-gap: 30px; padding-left: 20px; margin: 0; }
.legal-toc li { font-size: 0.88rem; margin-bottom: 7px; }
@media (max-width: 620px) { .legal-toc ol { columns: 1; } }

/* ---------- CTA band ---------- */
.cta-band { background: var(--ink); color: var(--paper); border-radius: var(--radius-l); padding: 54px; display: flex; justify-content: space-between; align-items: center; gap: 26px; flex-wrap: wrap; }
.cta-band h2 { color: var(--paper); max-width: 20ch; margin: 0; font-size: 1.6rem; }

/* ---------- Footer (no contact details — form-only, per policy) ---------- */
.footer-hk { background: var(--ink); color: var(--steel-light); padding: 64px 0 0; }
.footer-hk h4 { color: var(--paper); font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.07em; text-transform: uppercase; margin-bottom: 18px; }
.footer-hk p { font-size: 0.87rem; max-width: 34ch; }
.footer-hk ul { list-style: none; padding: 0; margin: 0; }
.footer-hk ul li { margin-bottom: 11px; }
.footer-hk a { color: var(--steel-light); text-decoration: none; font-size: 0.89rem; }
.footer-hk a:hover { color: var(--signal); }
.footer-divider { border-top: 1px solid var(--line-dark); margin-top: 50px; }
.footer-bottom { display: flex; justify-content: space-between; padding: 20px 0; font-size: 0.78rem; flex-wrap: wrap; gap: 10px; }
.footer-bottom .legal-links { display: flex; gap: 20px; }
.footer-bottom a:hover { color: var(--signal); }

/* ---------- Utility ---------- */
.badge-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; padding: 0; list-style: none; }
.badge-list li { font-family: var(--font-mono); font-size: 0.72rem; background: var(--paper); border: 1px solid var(--line); padding: 6px 12px; border-radius: 100px; color: var(--ink); }
.text-signal { color: var(--signal-deep) !important; }
.bg-paper-2 { background: var(--paper-2); }

/* ---------- Vendor-evaluation illustration (light variant, "Our Differentiator") ---------- */
.eval-diagram {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 32px;
}
.eval-diagram svg { width: 100%; height: auto; }
.eval-diagram .ed-grid { stroke: var(--line); stroke-width: 1; }
.eval-diagram .ed-header { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.03em; fill: var(--steel); text-transform: uppercase; }
.eval-diagram .ed-label { font-family: var(--font-mono); font-size: 10px; fill: var(--ink); }
.eval-diagram .ed-win-bg { fill: var(--signal-soft); }
.eval-diagram .ed-check { stroke: var(--signal-deep); stroke-width: 2; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.eval-diagram .ed-dot { fill: var(--line); }