/* ==========================================================================
   Huber Underground Warehouses Incorporated (UWI) — Global Stylesheet
   Modern, responsive, semantic. System fonts for reliable offline rendering.
   ========================================================================== */

:root {
  --navy: #0f2a4a;
  --navy-dark: #0a1f38;
  --blue: #1b4d8f;
  --blue-light: #2c6fbb;
  --accent: #e8a33d;
  --accent-dark: #c9851f;
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #2b2f36;
  --muted: #6b7280;
  --border: #e2e6ec;
  --radius: 10px;
  --shadow: 0 4px 18px rgba(15, 42, 74, 0.08);
  --shadow-lg: 0 10px 30px rgba(15, 42, 74, 0.14);
  --maxw: 1180px;
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-light); text-decoration: underline; }

h1, h2, h3, h4 {
  color: var(--navy);
  line-height: 1.25;
  font-weight: 700;
  margin: 0 0 0.6em;
}
h1 { font-size: 2.1rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--navy);
  color: #fff;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 44px; height: 44px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--blue-light), var(--blue));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 1.1rem;
  flex: 0 0 auto;
}
.brand-name { color: #fff; font-weight: 700; font-size: 1.15rem; line-height: 1.2; }
.brand-name small { display: block; font-weight: 400; font-size: 0.78rem; color: #b9c8dd; }

.main-nav ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.main-nav a {
  color: #dbe6f5;
  padding: 8px 12px;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95rem;
}
.main-nav a:hover { color: #fff; background: rgba(255,255,255,0.12); text-decoration: none; }
.main-nav a.active { color: #fff; background: var(--blue-light); }

.nav-toggle {
  display: none;
  background: none; border: 1px solid rgba(255,255,255,0.4);
  color: #fff; font-size: 1.3rem; padding: 4px 12px; border-radius: 6px;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy) 55%, var(--blue));
  color: #fff;
  padding: 64px 0;
}
.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}
.hero h1 { color: #fff; font-size: 2.5rem; margin-bottom: 0.4em; }
.hero p.lead { font-size: 1.15rem; color: #dbe6f5; margin-bottom: 1.4em; }
.hero img { border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }
.hero-badges span {
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 6px 12px; border-radius: 20px; font-size: 0.85rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #1a1a1a;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn:hover { background: var(--accent-dark); color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover { background: #fff; color: var(--navy); }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: var(--blue-light); color: #fff; }

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section-alt { background: var(--surface); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 40px; }
.section-head h2 { margin-bottom: 0.3em; }
.section-head p { color: var(--muted); }

/* ---------- Cards / Grid ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card h3 { margin-bottom: 0.4em; }
.card p { color: var(--muted); font-size: 0.95rem; }
.card-icon {
  width: 52px; height: 52px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-light), var(--blue));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700;
  margin-bottom: 16px;
}

/* ---------- Feature list ---------- */
.feature-list { list-style: none; margin: 0; padding: 0; }
.feature-list li {
  padding: 10px 0 10px 30px;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.feature-list li::before {
  content: "✓";
  position: absolute; left: 0; top: 10px;
  color: var(--accent); font-weight: 700;
}

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; padding: 20px; }
.stat .num { font-size: 2.2rem; font-weight: 800; color: var(--blue); }
.stat .label { color: var(--muted); font-size: 0.9rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--blue), var(--navy));
  color: #fff;
  text-align: center;
  padding: 48px 20px;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: #dbe6f5; max-width: 640px; margin: 0 auto 20px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 20px; }
.breadcrumb a { color: var(--blue); }
.breadcrumb span { color: var(--muted); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy) 60%, var(--blue));
  color: #fff;
  padding: 40px 0;
}
.page-hero h1 { color: #fff; margin-bottom: 0.2em; }
.page-hero p { color: #dbe6f5; max-width: 720px; margin: 0; }

/* ---------- Content layout ---------- */
.content-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: start;
}
.sidebar { position: sticky; top: 90px; }
.sidebar .card { padding: 20px; }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin-bottom: 4px; }
.sidebar a { display: block; padding: 8px 12px; border-radius: 6px; color: var(--text); }
.sidebar a:hover { background: var(--bg); text-decoration: none; color: var(--blue); }
.sidebar a.active { background: var(--blue); color: #fff; }

/* ---------- FAQ ---------- */
.faq-item { margin-bottom: 14px; }
.faq-item details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before { content: "▸ "; color: var(--accent); }
.faq-item details[open] summary::before { content: "▾ "; }
.faq-item details p { margin: 12px 0 0; color: var(--muted); }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; color: var(--navy); }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(27,77,143,0.15);
}

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-dark); color: #c6d2e2; padding: 48px 0 0; }
.footer-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
}
.site-footer h4 { color: #fff; margin-bottom: 14px; font-size: 1rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: #c6d2e2; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 18px 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #93a3ba;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  h1 { font-size: 1.7rem; }
  .hero h1 { font-size: 1.9rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    width: 100%;
    order: 3;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .main-nav a { display: block; }
}