/* ==========================================================================
   G.H. Berlin Oil Company — Global Stylesheet
   Modern, centered, responsive design
   ========================================================================== */

:root {
  --navy: #0d2b45;
  --navy-dark: #081d30;
  --navy-light: #16405f;
  --amber: #f5a623;
  --amber-dark: #d18f14;
  --bg: #f4f6f8;
  --white: #ffffff;
  --text: #2b3440;
  --muted: #5b6b7b;
  --border: #e2e8ee;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(13, 43, 69, 0.08);
  --shadow-lg: 0 14px 40px rgba(13, 43, 69, 0.14);
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--navy-light);
  text-decoration: none;
}

a:hover {
  color: var(--amber-dark);
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Top utility bar ---------- */
.topbar {
  background: var(--navy-dark);
  color: #cfe0ef;
  font-size: 0.85rem;
}

.topbar .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 8px;
  padding-bottom: 8px;
}

.topbar a {
  color: #cfe0ef;
}

.topbar a:hover {
  color: var(--amber);
}

.topbar .topbar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.topbar .topbar-phone {
  font-weight: 600;
  color: var(--amber);
}

/* ---------- Header / Nav ---------- */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 10px rgba(13, 43, 69, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  height: 52px;
  width: auto;
}

.brand-text {
  line-height: 1.15;
}

.brand-text .brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: 0.2px;
}

.brand-text .brand-tag {
  font-size: 0.78rem;
  color: var(--muted);
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 9px 13px;
  border-radius: 7px;
  font-weight: 600;
  color: var(--navy);
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--navy);
  color: var(--white);
}

.nav-toggle {
  display: none;
  background: var(--navy);
  color: var(--white);
  border: 0;
  border-radius: 7px;
  padding: 9px 13px;
  font-size: 1rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 55%, var(--navy-light) 100%);
  color: var(--white);
  padding: 64px 0 72px;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-size: 2.4rem;
  line-height: 1.2;
  margin: 0 0 18px;
  color: var(--white);
}

.hero h1 span {
  color: var(--amber);
}

.hero p.lead {
  font-size: 1.12rem;
  color: #dbe7f2;
  margin: 0 0 26px;
  max-width: 560px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.hero-badge {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 30px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  padding: 26px;
  text-align: center;
}

.hero-card .stat {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--amber);
  line-height: 1.1;
}

.hero-card .stat-label {
  font-size: 0.9rem;
  color: #dbe7f2;
  margin-top: 6px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.1s;
}

.btn:active {
  transform: translateY(1px);
}

.btn-amber {
  background: var(--amber);
  color: var(--navy-dark);
}

.btn-amber:hover {
  background: var(--amber-dark);
  color: var(--navy-dark);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--navy);
}

.btn-navy {
  background: var(--navy);
  color: var(--white);
}

.btn-navy:hover {
  background: var(--navy-light);
  color: var(--white);
}

/* ---------- Sections ---------- */
.section {
  padding: 60px 0;
}

.section-alt {
  background: var(--white);
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.section-head .eyebrow {
  color: var(--amber-dark);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
}

.section-head h2 {
  font-size: 2rem;
  color: var(--navy);
  margin: 8px 0 12px;
}

.section-head p {
  color: var(--muted);
  margin: 0;
}

/* ---------- Cards / Grids ---------- */
.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(--white);
  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 .icon {
  font-size: 1.9rem;
  margin-bottom: 12px;
}

.card h3 {
  color: var(--navy);
  font-size: 1.15rem;
  margin: 0 0 10px;
}

.card p {
  color: var(--muted);
  margin: 0 0 14px;
  font-size: 0.95rem;
}

.card a.more {
  font-weight: 700;
  font-size: 0.9rem;
}

/* ---------- Feature list ---------- */
.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-list li {
  padding: 8px 0 8px 30px;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.feature-list li:last-child {
  border-bottom: 0;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 8px;
  color: var(--amber-dark);
  font-weight: 800;
}

/* ---------- Two column content ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.split h2 {
  color: var(--navy);
  font-size: 1.8rem;
  margin: 0 0 16px;
}

.split p {
  color: var(--muted);
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  padding: 48px 0;
  text-align: center;
}

.cta-band h2 {
  color: var(--white);
  margin: 0 0 12px;
  font-size: 1.8rem;
}

.cta-band p {
  color: #dbe7f2;
  margin: 0 auto 24px;
  max-width: 640px;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  color: var(--white);
  padding: 44px 0;
}

.page-hero h1 {
  color: var(--white);
  margin: 0 0 8px;
  font-size: 2rem;
}

.page-hero p {
  color: #dbe7f2;
  margin: 0;
  max-width: 720px;
}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--muted);
  padding: 16px 0;
}

.breadcrumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: #b6c2cd;
}

.breadcrumbs a {
  color: var(--muted);
}

.breadcrumbs a:hover {
  color: var(--navy);
}

.breadcrumbs [aria-current="page"] {
  color: var(--navy);
  font-weight: 600;
}

/* ---------- Content / article ---------- */
.content {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
}

.content h2 {
  color: var(--navy);
  margin: 30px 0 14px;
  font-size: 1.5rem;
}

.content h2:first-child {
  margin-top: 0;
}

.content h3 {
  color: var(--navy);
  margin: 24px 0 10px;
  font-size: 1.15rem;
}

.content p {
  color: var(--text);
}

.content ul,
.content ol {
  padding-left: 22px;
}

.content li {
  margin-bottom: 6px;
}

/* ---------- Tables ---------- */
.table-wrap {
  overflow-x: auto;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.data th,
table.data td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
}

table.data thead th {
  background: var(--navy);
  color: var(--white);
  font-weight: 700;
}

table.data tbody tr:nth-child(even) {
  background: #f7f9fb;
}

/* ---------- FAQ ---------- */
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 700;
  color: var(--navy);
  list-style: none;
  position: relative;
  padding-right: 44px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--amber-dark);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item .faq-body {
  padding: 0 22px 18px;
  color: var(--muted);
}

/* ---------- Contact / forms ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  align-items: start;
}

.contact-info .info-block {
  margin-bottom: 22px;
}

.contact-info h3 {
  color: var(--navy);
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.contact-info p {
  margin: 2px 0;
  color: var(--muted);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--navy);
}

.form-group label .req {
  color: #c0392b;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--white);
  color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: 2px solid var(--amber);
  border-color: var(--amber);
}

.form-group textarea {
  resize: vertical;
}

.form-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 10px;
}

/* ---------- Locations ---------- */
.location-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.location-card h3 {
  color: var(--navy);
  margin: 0 0 10px;
}

.location-card p {
  margin: 3px 0;
  color: var(--muted);
}

.location-card .loc-phone {
  font-weight: 700;
  color: var(--navy);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-dark);
  color: #cfe0ef;
  padding: 48px 0 0;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 32px;
  padding-bottom: 32px;
}

.site-footer h4 {
  color: var(--white);
  margin: 0 0 14px;
  font-size: 1rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 8px;
}

.site-footer a {
  color: #cfe0ef;
}

.site-footer a:hover {
  color: var(--amber);
}

.site-footer p {
  margin: 4px 0;
  color: #a9bccd;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0;
  font-size: 0.85rem;
  color: #8fa6ba;
  text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero .container,
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 44px 0 52px;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-block;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 2px;
    padding-top: 10px;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .content {
    padding: 24px;
  }

  .section {
    padding: 44px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .card {
    transition: none;
  }
}