/* ============================================================
   Ridgeline Advisory — brand kit v1.0
   Navy #0E1B2E · Slate #3B5067 · Cobalt #3D6BFF · Paper #F4F6FA
   Type: Space Grotesk (headlines) · Sora (body)
   ============================================================ */

:root {
  --navy:        #0E1B2E;
  --navy-deep:   #0a1320;
  --slate:       #3B5067;
  --slate2:      #6F8298;
  --cobalt:      #3D6BFF;
  --cobalt-dark: #2f57db;
  --paper:       #F4F6FA;
  --white:       #ffffff;
  --line:        #E3E8F0;
  --line-dark:   rgba(255, 255, 255, 0.12);

  --maxw: 1120px;
  --pad: 1.5rem;

  --display: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --body: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--body);
  color: var(--slate);
  background: var(--white);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.1;
  color: var(--navy);
  letter-spacing: -0.02em;
}

p { margin: 0 0 1rem; }

a { color: var(--cobalt); text-decoration: none; }
a:hover { color: var(--cobalt-dark); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--pad);
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--navy);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}
.brand { display: inline-flex; align-items: center; }
.brand-logo { height: 34px; width: auto; display: block; }

.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a {
  color: var(--slate);
  font-size: 0.95rem;
  font-weight: 500;
  font-family: var(--display);
}
.site-nav a:hover { color: var(--navy); }
.nav-cta {
  border: 1.5px solid var(--navy);
  border-radius: 999px;
  padding: 0.45rem 1.15rem;
  color: var(--navy) !important;
}
.nav-cta:hover { background: var(--navy); color: #fff !important; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 1.7rem;
  border-radius: 10px;
  border: 1.5px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
  cursor: pointer;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-deep); color: #fff; }
.btn-ghost { border-color: var(--slate2); color: var(--navy); }
.btn-ghost:hover { border-color: var(--navy); background: var(--navy); color: #fff; }
.btn-cobalt { background: var(--cobalt); color: #fff; }
.btn-cobalt:hover { background: var(--cobalt-dark); color: #fff; transform: translateY(-2px); }
.btn-lg { padding: 1rem 2.1rem; font-size: 1.05rem; }

/* ---------- Kicker / titles ---------- */
.kicker {
  font-family: var(--body);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--cobalt);
  margin: 0 0 1.2rem;
}
.kicker-light { color: #7fa0ff; }
.section-title {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  margin: 0 0 1.5rem;
  max-width: 22ch;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(120% 80% at 85% -10%, #eef2fb 0%, var(--paper) 55%, var(--white) 100%);
  overflow: hidden;
  padding: clamp(4.5rem, 11vw, 9rem) 0 clamp(4.5rem, 10vw, 8rem);
  border-bottom: 1px solid var(--line);
}
.hero-watermark {
  position: absolute;
  top: 50%;
  right: -4%;
  width: clamp(280px, 42vw, 620px);
  transform: translateY(-50%);
  opacity: 0.05;
  pointer-events: none;
  user-select: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 760px; }
.hero h1 {
  font-size: clamp(2.2rem, 5.6vw, 3.8rem);
  margin: 0 0 1.4rem;
  max-width: 17ch;
}
.hero-lede {
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  color: var(--slate);
  max-width: 56ch;
  margin-bottom: 2.2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ---------- Sections ---------- */
.section { padding: clamp(4rem, 9vw, 7rem) 0; }

/* ---------- Service cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2.4rem 2rem 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 2rem;
  width: 38px; height: 3px;
  background: var(--cobalt);
  border-radius: 0 0 3px 3px;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 44px -26px rgba(14, 27, 46, 0.4);
  border-color: var(--slate2);
}
.card-num {
  font-family: var(--display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate2);
  letter-spacing: 0.1em;
  margin-bottom: 0.9rem;
}
.card h3 { font-size: 1.32rem; margin: 0 0 0.8rem; }
.card p { color: var(--slate); margin: 0; font-size: 0.98rem; }

/* ---------- Dark section (Approach) ---------- */
.section-dark { background: var(--navy); color: rgba(255,255,255,0.82); }
.section-dark .section-title { color: #fff; }
.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.approach-lede { color: rgba(255,255,255,0.78); font-size: 1.1rem; }
.approach-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem 2rem;
}
.approach-points li { border-top: 2px solid var(--cobalt); padding-top: 1rem; }
.approach-points h4 { color: #fff; font-size: 1.08rem; margin: 0 0 0.4rem; }
.approach-points p { color: rgba(255,255,255,0.7); font-size: 0.95rem; margin: 0; }

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: clamp(2rem, 6vw, 4.5rem);
  align-items: start;
}
.about-text p { color: var(--slate); }
.about-text strong { color: var(--navy); font-weight: 600; }
.about-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem;
}
.about-card h4 { margin: 0 0 1.2rem; font-size: 1.15rem; }
.about-card dl { margin: 0; }
.about-card dl > div { padding: 0.8rem 0; border-top: 1px solid var(--line); }
.about-card dl > div:first-of-type { border-top: none; padding-top: 0; }
.about-card dt {
  font-family: var(--body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--slate2);
  margin-bottom: 0.2rem;
}
.about-card dd { margin: 0; font-size: 0.98rem; color: var(--navy); font-weight: 500; }

/* ---------- Contact ---------- */
.section-contact { background: var(--paper); text-align: center; border-top: 1px solid var(--line); }
.contact-inner { max-width: 640px; margin: 0 auto; }
.contact-inner .kicker { color: var(--cobalt); }
.section-contact .section-title { margin-inline: auto; }
.contact-lede { color: var(--slate); font-size: 1.15rem; margin-bottom: 2rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: rgba(255,255,255,0.65); padding: 2.6rem 0; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.2rem;
}
.footer-logo { height: 30px; width: auto; }
.footer-meta { margin: 0; font-size: 0.85rem; text-align: right; line-height: 1.7; }
.footer-tag {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--slate2);
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .approach-grid, .about-grid { grid-template-columns: 1fr; }
  .approach-points { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .site-nav { gap: 1.1rem; }
  .site-nav a:not(.nav-cta) { display: none; }
  .header-inner { height: 64px; }
  .brand-logo { height: 30px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-meta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .btn-cobalt { transition: none; }
}