/* Seavia Resources — one-page site */

:root {
  --navy: #0A2540;
  --navy-deep: #061A30;
  --gold: #C9A961;
  --gold-deep: #A8882F;
  --text: #111827;
  --text-muted: #4B5563;
  --text-faint: #9CA3AF;
  --bg: #FFFFFF;
  --bg-alt: #F7F5F0;
  --bg-line: #E5E7EB;
  --max: 72rem;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(10,37,64,0.04);
  --shadow-md: 0 4px 16px rgba(10,37,64,0.06);
  --ease: cubic-bezier(0.2, 0.65, 0.2, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: 'Inter Tight', 'Inter', system-ui, sans-serif;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--navy);
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2.25rem, 5vw + 0.5rem, 3.75rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3vw + 0.5rem, 2.5rem); font-weight: 700; }
h3 { font-size: 1.125rem; font-weight: 600; }

p { margin: 0 0 1em; }

a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--gold-deep); }

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container.narrow { max-width: 46rem; }

/* Header */

.site-header {
  border-bottom: 1px solid var(--bg-line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(140%) blur(8px);
  background: rgba(255,255,255,0.85);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--navy);
  font-family: 'Inter Tight', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}

.brand-mark { width: 26px; height: 26px; color: var(--navy); }
.brand-mark.small { width: 18px; height: 18px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.15s var(--ease);
}

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

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s var(--ease);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.btn-primary:hover { background: var(--navy-deep); color: #fff; transform: translateY(-1px); }

.btn-ghost {
  color: var(--navy);
  border-color: var(--bg-line);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--navy); color: var(--navy); }

.btn-link {
  padding: 0.75rem 0.25rem;
  color: var(--navy);
  background: transparent;
}
.btn-link:hover { color: var(--gold-deep); }

/* Hero */

.hero {
  padding: clamp(4rem, 10vw, 8rem) 0 clamp(4rem, 8vw, 6rem);
  background:
    radial-gradient(circle at 80% 0%, rgba(201,169,97,0.08), transparent 45%),
    linear-gradient(180deg, #FDFCF8 0%, #FFFFFF 80%);
  border-bottom: 1px solid var(--bg-line);
}

.eyebrow {
  color: var(--gold-deep);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.eyebrow-light { color: var(--gold); }

.hero h1 .accent {
  color: var(--gold-deep);
}

.lede {
  font-size: 1.1875rem;
  color: var(--text-muted);
  max-width: 42rem;
  margin: 1.25rem 0 2rem;
  line-height: 1.55;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

/* Sections */

.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

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

.section-dark {
  background: var(--navy);
  color: #E5E7EB;
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: #fff; }
.section-dark a { color: #fff; }
.section-dark .checks li::before { color: var(--gold); }

.section-lede {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 46rem;
  margin: 0 0 2rem;
}

.section-dark .section-lede { color: #CBD5E1; }

/* Grid / cards */

.grid {
  display: grid;
  gap: 1.25rem;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }

@media (max-width: 820px) {
  .grid-3 { grid-template-columns: 1fr; }
}

.card {
  background: #fff;
  border: 1px solid var(--bg-line);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.18s var(--ease), transform 0.18s var(--ease);
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.step-num {
  font-family: 'Inter Tight', 'Inter', sans-serif;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold-deep);
  margin-bottom: 0.75rem;
}

.card p { color: var(--text-muted); margin: 0; font-size: 0.975rem; }

/* Sector list */

.sectors {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem 1.5rem;
  max-width: 56rem;
}

@media (max-width: 820px) {
  .sectors { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .sectors { grid-template-columns: 1fr; }
}

.sectors li {
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--bg-line);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
}

/* Split layout */

.split {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 820px) {
  .split { grid-template-columns: 1fr; gap: 1.5rem; }
}

.split-body p { color: #CBD5E1; font-size: 1.0625rem; }

/* Checked list */

.checks {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 2rem;
}
.checks li {
  position: relative;
  padding: 0.375rem 0 0.375rem 1.75rem;
  color: #E5E7EB;
  font-size: 1rem;
}
.checks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 16px;
  height: 10px;
  border-left: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(-45deg);
}

/* Contact */

.contact-card {
  margin-top: 1.5rem;
  border: 1px solid var(--bg-line);
  border-radius: var(--radius);
  padding: 1.75rem;
  background: var(--bg-alt);
}

.contact-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--bg-line);
  align-items: center;
}
.contact-row:last-child { border-bottom: 0; }

.contact-label {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
}

.contact-row a {
  font-size: 1.0625rem;
  font-weight: 500;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--bg-line);
  padding: 2rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  background: var(--bg);
}

.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.foot > div {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.foot-links a { color: var(--text-muted); }
.foot-links a:hover { color: var(--navy); }

/* Mobile nav */

@media (max-width: 640px) {
  .nav-links a:not(.btn) { display: none; }
  .brand-word { font-size: 1rem; }
}