/* ===== CSS Custom Property System — Keel Technologies ===== */
:root {
  /* Branding: deep indigo + teal (tech / maritime-stability metaphor) */
  --primary: #1a2a6c;
  --primary-dark: #0f194d;
  --accent: #00b4d8;
  --accent-dark: #0096c0;

  /* Neutrals */
  --bg: #f8f9fa;
  --surface: #ffffff;
  --text-dark: #212529;
  --text-muted: #6c757d;
  --border: #dee2e6;
  --border-thin: #e9ecef;

  /* Footer */
  --footer-bg: #13182b;
  --footer-text: #adb5bd;
  --footer-heading: #f8f9fa;

  /* Radius / spacing */
  --radius: 10px;
  --radius-lg: 16px;
  --transition: 0.25s ease;
}

/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* ===== Container ===== */
.container {
  width: min(90%, 1200px);
  margin-inline: auto;
  padding-block: 3rem;
}
.container-sm {
  width: min(90%, 720px);
  margin-inline: auto;
  padding-block: 3rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1;
}
.btn-primary {
  background-color: var(--primary);
  color: var(--surface);
  border-color: var(--primary);
}
.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(31, 43, 80, 0.2);
}
.btn-accent {
  background-color: var(--accent);
  color: var(--surface);
  border-color: var(--accent);
}
.btn-accent:hover {
  background-color: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background-color: var(--primary);
  color: var(--surface);
  transform: translateY(-2px);
}
.btn-light-outline {
  background: transparent;
  color: var(--surface);
  border-color: var(--surface);
}
.btn-light-outline:hover {
  background-color: var(--surface);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ===== Navbar ===== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-thin);
  background-color: var(--surface);
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar .logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.navbar .logo .dot {
  color: var(--accent);
}
.navbar .nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.navbar .nav-links a {
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.95rem;
  padding-bottom: 0.25rem;
}
.navbar .nav-links a:hover { color: var(--accent); }
.navbar .nav-links a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--accent);
}
.navbar .nav-cta { display: none; }
.navbar .hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
}
.navbar .hamburger span {
  display: block;
  width: 28px;
  height: 3px;
  background-color: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  padding-block: 5rem 4rem;
  text-align: center;
  background: linear-gradient(135deg, #0f194d 0%, #1a2a6c 100%);
  color: var(--surface);
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}
.hero .lead {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  opacity: 0.9;
  max-width: 720px;
  margin-inline: auto;
  margin-bottom: 2rem;
}
.hero .hero-ctas {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}
.hero .hero-badge {
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ===== Section helpers ===== */
.section-title {
  text-align: center;
  margin-bottom: 1rem;
}
.section-title h2 {
  font-size: clamp(1.75rem, 3vw, 2.2rem);
  color: var(--primary-dark);
}
.section-title .subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-top: 0.5rem;
}
.section { padding-block: 4rem 3rem; }

/* ===== Services grid ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  margin-top: 3rem;
}
.service-card {
  background-color: var(--surface);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  text-align: left;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
  border-color: var(--accent);
}
.service-card .sc-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.service-card h3 {
  font-size: 1.25rem;
  color: var(--primary-dark);
  margin-bottom: 0.75rem;
}
.service-card p { color: var(--text-muted); }

/* ===== Credentials strip ===== */
.credentials-strip {
  background-color: var(--surface);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
}
.credentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  text-align: center;
}
.credentials-item .ci-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 0.25rem;
}
.credentials-item .ci-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
}

/* ===== CTA strip ===== */
.cta-strip {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--surface);
  text-align: center;
  padding: 4rem 1rem;
  margin-top: 3rem;
}
.cta-strip .cta-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: 1rem;
}
.cta-strip .cta-text { opacity: 0.9; margin-bottom: 2rem; }

/* ===== Two-column ===== */
.twocol {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 768px) {
  .twocol { grid-template-columns: 1fr 1fr; }
}
.twocol .text h2 { color: var(--primary-dark); }
.twocol .text p { color: var(--text-muted); margin-bottom: 1.5rem; }
.twocol .image { text-align: center; }

/* ===== Footer ===== */
.footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding: 3.5rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
}
.footer h4 {
  color: var(--footer-heading);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}
.footer ul li { margin-bottom: 0.5rem; }
.footer ul li a {
  color: var(--footer-text);
  transition: var(--transition);
}
.footer ul li a:hover { color: var(--accent); }
.footer .social { display: flex; gap: 1rem; margin-bottom: 1rem; }
.footer .social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--footer-text);
  transition: var(--transition);
}
.footer .social a:hover {
  background: var(--accent);
  color: var(--primary);
}
.footer .contact-item { display: flex; align-items: flex-start; gap: 0.75rem; margin-bottom: 0.75rem; }
.footer .contact-item svg { flex-shrink: 0; margin-top: 2px; }
.footer .copyright {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Cred strip (small) ===== */
.footer-cred {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  font-size: 0.85rem;
}
.footer-cred .fc-item { display: inline-block; margin-right: 1rem; }
.footer-cred .fc-label { color: var(--text-muted); }
.footer-cred .fc-value { font-weight: 600; color: var(--footer-heading); }

/* ===== Table / legal ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}
th, td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
}
th { background-color: var(--bg); }
.legal-list { margin: 1rem 0; }
.legal-list li { margin-bottom: 0.5rem; }
.legal-clause { margin-top: 1.5rem; }
.legal-clause h3 { color: var(--primary-dark); margin-bottom: 0.5rem; }

/* ===== Mobile ===== */
@media (max-width: 767px) {
  .navbar .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-thin);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    display: none;
  }
  .navbar .nav-links.open { display: flex; }
  .navbar .nav-links li { padding: 0.75rem 1.5rem; border-bottom: 1px solid var(--border-thin); }
  .navbar .nav-links li:last-child { border-bottom: none; }
  .navbar .nav-links a { display: block; width: 100%; padding: 0.5rem 0; }
  .navbar .nav-cta { margin-top: 0.5rem; padding: 0 1.5rem; }
  .hero .hero-ctas { flex-direction: column; }
  .hero { padding-block: 4rem 2rem; }
}

/* ===== Inline nav toggle ===== */
#nav-toggle { display: none; }
#nav-toggle:checked + .hamburger + .nav-links,
#nav-toggle:checked + .hamburger + .nav-links.open { display: flex; }
@media (max-width: 768px) {
  #nav-toggle { display: none; }
  .navbar .nav-links { display: none; }
  .navbar .nav-links.open { display: flex; }
}