/* =========================================================================
   Project Northern Waters - Shared Stylesheet
   Brand system: deep-water, institutional, credible, modern.
   ========================================================================= */

:root {
  --navy: #0A1A2F;        /* dark sections, headings */
  --ocean: #003F63;       /* cards / bands */
  --aqua: #00A8E8;        /* primary / links / buttons */
  --yellow: #FDD835;      /* secondary / alert accent (sparingly) */
  --tint: #F0F4F8;        /* light tint background */
  --body: #2C2C2C;        /* body text */
  --white: #FFFFFF;
  --ocean-deep: #002B45;  /* darker ocean for gradients */
  --border: #D5DEE7;

  --radius-btn: 4px;
  --radius-card: 8px;
  --maxw: 1140px;
  --gutter: 1.5rem;

  --shadow-sm: 0 1px 3px rgba(10, 26, 47, 0.08);
  --shadow-md: 0 6px 24px rgba(10, 26, 47, 0.12);

  --font-head: 'Montserrat', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Open Sans', 'Segoe UI', Arial, sans-serif;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--body);
  background: var(--white);
  line-height: 1.65;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 0.6em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.2vw, 1.45rem); }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1.1rem; }

a { color: var(--aqua); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }

ul, ol { margin: 0 0 1.1rem; padding-left: 1.3rem; }
li { margin-bottom: 0.4rem; }

.eyebrow {
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--aqua);
  margin: 0 0 0.75rem;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section--tint { background: var(--tint); }
.section--navy { background: var(--navy); color: #D9E4EF; }
.section--navy h2, .section--navy h3 { color: var(--white); }
.section--ocean { background: var(--ocean); color: #E4EEF5; }
.section--ocean h2, .section--ocean h3 { color: var(--white); }

.section-head { max-width: 760px; margin-bottom: 2.5rem; }
.section-head.center { margin-inline: auto; text-align: center; }

.lead { font-size: 1.15rem; color: inherit; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .06s ease;
  text-align: center;
}
.btn:hover, .btn:focus { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary { background: var(--aqua); color: var(--navy); }
.btn--primary:hover, .btn--primary:focus { background: #0091c7; color: var(--white); }

.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.6); }
.btn--ghost:hover, .btn--ghost:focus { background: var(--white); color: var(--navy); border-color: var(--white); }

.btn--outline { background: transparent; color: var(--ocean); border-color: var(--ocean); }
.btn--outline:hover, .btn--outline:focus { background: var(--ocean); color: var(--white); }

.btn-row { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 26, 47, 0.97);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 1rem;
}
.brand { display: flex; align-items: center; gap: 0.65rem; }
.brand img { width: 42px; height: 42px; }
.brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--white);
  font-size: 1rem;
  line-height: 1.1;
  letter-spacing: 0.01em;
}
.brand:hover { text-decoration: none; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--white);
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem 0.5rem;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.6rem;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: #CFDCEA;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a:focus,
.main-nav a[aria-current="page"] {
  color: var(--white);
  border-bottom-color: var(--aqua);
  text-decoration: none;
}
.nav-cta { }
.nav-cta a {
  background: var(--aqua);
  color: var(--navy) !important;
  padding: 0.55rem 1.05rem !important;
  border-radius: var(--radius-btn);
  border-bottom: 0 !important;
}
.nav-cta a:hover { background: #0091c7; color: var(--white) !important; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(0,168,232,0.22), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--ocean-deep) 55%, var(--ocean) 100%);
  color: var(--white);
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 140px;
  background: linear-gradient(to top, rgba(0,0,0,0.25), transparent);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; padding-top: clamp(3.5rem, 8vw, 6rem); padding-bottom: clamp(3.5rem, 8vw, 6rem); }
.hero-inner { max-width: 780px; }
.hero h1 { color: var(--white); margin-bottom: 0.5rem; }
.hero .tagline {
  font-family: var(--font-head);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--aqua);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}
.hero .subline {
  font-size: 1.25rem;
  color: #D9E4EF;
  margin-bottom: 0.5rem;
}
.hero .hero-note {
  font-size: 0.9rem;
  color: #9FB4C7;
  margin-bottom: 2rem;
}
.hero .btn-row { margin-top: 1.75rem; }

/* thin brand accent bar under hero */
.accent-bar { height: 5px; background: linear-gradient(to right, var(--aqua) 0%, var(--aqua) 78%, var(--yellow) 78%, var(--yellow) 100%); }

/* ---------- Page banner (interior pages) ---------- */
.page-banner {
  background: linear-gradient(160deg, var(--navy), var(--ocean-deep));
  color: var(--white);
  padding: clamp(2.75rem, 6vw, 4.25rem) 0;
}
.page-banner h1 { color: var(--white); margin-bottom: 0.35rem; }
.page-banner p { color: #C7D6E6; margin: 0; max-width: 680px; font-size: 1.1rem; }

/* ---------- Grid / cards ---------- */
.grid { display: grid; gap: 1.5rem; }
.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-card);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  height: 100%;
}
.card h3 { margin-bottom: 0.5rem; }
.card p:last-child { margin-bottom: 0; }

.card--ocean {
  background: var(--ocean);
  color: #E4EEF5;
  border-color: transparent;
}
.card--ocean h3 { color: var(--white); }

.card-icon {
  width: 48px; height: 48px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(0,168,232,0.12);
  color: var(--aqua);
  margin-bottom: 1rem;
}
.card--ocean .card-icon { background: rgba(255,255,255,0.12); color: var(--yellow); }
.card-icon svg { width: 26px; height: 26px; }

/* Stat tiles */
.stat {
  background: var(--white);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  height: 100%;
}
.stat .stat-num {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.9rem;
  color: var(--ocean);
  line-height: 1.1;
  margin-bottom: 0.35rem;
}
.stat .stat-label { font-size: 0.98rem; color: var(--body); margin: 0; }

/* Feature band (2-col text+points) */
.band-split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 2.5rem; align-items: center; }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li {
  position: relative;
  padding-left: 1.9rem;
  margin-bottom: 0.85rem;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.35rem;
  width: 1.1rem; height: 1.1rem;
  border-radius: 3px;
  background: var(--aqua);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='white' d='M9 16.17 4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='white' d='M9 16.17 4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.section--navy .checklist li::before,
.section--ocean .checklist li::before { background: var(--yellow); }

/* Milestone / phases */
.phases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; counter-reset: phase; }
.phase {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-card);
  padding: 1.75rem;
}
.phase .phase-tag {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
  color: var(--aqua);
  margin-bottom: 0.5rem;
}
.phase h3 { color: var(--white); margin-bottom: 0.5rem; }
.phase p { color: #C7D6E6; margin: 0; font-size: 0.96rem; }
.phase .status-active {
  display: inline-block;
  margin-top: 0.9rem;
  font-size: 0.72rem;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--yellow);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
}

/* CTA band */
.cta-band {
  background: linear-gradient(120deg, var(--ocean) 0%, var(--ocean-deep) 100%);
  color: var(--white);
  text-align: center;
  border-radius: var(--radius-card);
  padding: clamp(2.5rem, 5vw, 3.5rem);
}
.cta-band h2 { color: var(--white); }
.cta-band p { color: #D9E4EF; max-width: 620px; margin-inline: auto; }
.cta-band .btn-row { justify-content: center; margin-top: 1.5rem; }

/* ---------- Prose (long-form partner/content pages) ---------- */
.prose { max-width: 820px; }
.prose h2 { margin-top: 2.5rem; }
.prose h3 { margin-top: 1.75rem; }
.prose > *:first-child { margin-top: 0; }
.prose .currency {
  font-size: 0.85rem;
  color: #6B7A88;
  font-style: italic;
  margin-bottom: 2rem;
}
.callout {
  border-left: 4px solid var(--aqua);
  background: var(--tint);
  padding: 1.1rem 1.4rem;
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  margin: 1.5rem 0;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- Contact form ---------- */
.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  padding: clamp(1.75rem, 4vw, 2.5rem);
}
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.field { display: flex; flex-direction: column; }
.field.full { grid-column: 1 / -1; }
.field label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--navy);
}
.field .req { color: #C0392B; }
.field input,
.field select,
.field textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  background: var(--white);
  color: var(--body);
  width: 100%;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--aqua);
  box-shadow: 0 0 0 3px rgba(0,168,232,0.18);
}
.form-note { font-size: 0.85rem; color: #6B7A88; margin-top: 0.25rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: #9FB4C7;
  padding: 3rem 0 2rem;
  font-size: 0.92rem;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.9rem; }
.footer-brand img { width: 38px; height: 38px; }
.footer-brand span { font-family: var(--font-head); font-weight: 700; color: var(--white); font-size: 0.98rem; }
.site-footer h4 { color: var(--white); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 0.9rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: #9FB4C7; }
.site-footer a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
  align-items: center;
}
.footer-attribution { color: #C7D6E6; }

/* ---------- 404 ---------- */
.error-page {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  background: linear-gradient(160deg, var(--navy), var(--ocean-deep));
  color: var(--white);
  padding: 4rem 1.5rem;
}
.error-page h1 { color: var(--white); font-size: clamp(3rem, 10vw, 6rem); margin-bottom: 0.25rem; }
.error-page p { color: #C7D6E6; max-width: 460px; margin-inline: auto; }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--yellow); color: var(--navy);
  padding: 0.6rem 1rem; z-index: 100;
  font-family: var(--font-head); font-weight: 700;
  border-radius: 0 0 var(--radius-btn) 0;
}
.skip-link:focus { left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .band-split { grid-template-columns: 1fr; gap: 1.75rem; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--navy);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: none;
    padding: 0.5rem 0 1rem;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 0 var(--gutter); }
  .main-nav li { border-bottom: 1px solid rgba(255,255,255,0.06); }
  .main-nav a { display: block; padding: 0.85rem 0; }
  .nav-cta a { display: inline-block; margin-top: 0.5rem; }
}

@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4, .phases { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .btn-row .btn { width: auto; }
}