/* ==========================================================================
   Nathan Brothers — stylesheet
   Palette: soft warm-gray paper + charcoal ink + sage green accent (calm, low-contrast blocks)
   Type: system serif for headings, system sans for body (no CDN dependency)
   ========================================================================== */

:root {
  --navy: #3a3d38;
  --navy-deep: #2a2f2b;
  --ink: #2b2e2a;
  --ink-soft: #656b61;
  --paper: #f7f6f0;
  --paper-alt: #edf0e6;
  --card: #ffffff;
  --accent: #5a7a5e;
  --accent-dark: #3f5c43;
  --accent-tint: #e4ebe0;
  --line: #dde2d6;
  --line-dark: #46504a;
  --white: #ffffff;

  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --max-w: 1180px;
  --radius: 8px;
  --shadow-soft: 0 1px 2px rgba(43, 46, 42, 0.05), 0 8px 24px rgba(43, 46, 42, 0.05);
  --shadow-card: 0 1px 3px rgba(43, 46, 42, 0.06), 0 12px 32px rgba(43, 46, 42, 0.07);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, textarea, button { font-family: inherit; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section { position: relative; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--navy);
  letter-spacing: -0.01em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}

.section-head {
  max-width: 680px;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.5rem);
  line-height: 1.18;
  margin-bottom: 16px;
}

.section-head p {
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 620px;
}

.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: rgba(43, 46, 42, 0.35);
}
.btn-ghost:hover { background: rgba(43, 46, 42, 0.06); border-color: var(--navy); }

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

.btn-block { width: 100%; }

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 246, 240, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img { width: 32px; height: 32px; }

.brand-word {
  font-family: var(--font-serif);
  font-size: 1.28rem;
  color: var(--navy);
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--navy);
  opacity: 0.82;
  transition: opacity 0.15s ease;
}
.nav-links a:hover { opacity: 1; color: var(--accent-dark); }

.nav-cta { display: flex; align-items: center; gap: 18px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span { margin: 5px 0; }

.nav-toggle.open::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span { opacity: 0; }
.nav-toggle.open::after { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: linear-gradient(180deg, var(--paper) 0%, var(--accent-tint) 100%);
  color: var(--ink);
  padding: 90px 0 110px;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(43,46,42,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43,46,42,0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse at top right, black, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
  position: relative;
}

.hero h1 {
  font-size: clamp(2.6rem, 2rem + 3vw, 4.2rem);
  color: var(--navy);
  line-height: 1.03;
  margin-bottom: 22px;
}

.hero-sub {
  font-size: clamp(1.05rem, 0.98rem + 0.4vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.hero-meta div { display: flex; flex-direction: column; gap: 4px; }
.hero-meta strong { font-family: var(--font-serif); font-size: 1.5rem; color: var(--navy); }
.hero-meta span { font-size: 0.82rem; color: var(--ink-soft); }

.hero-art { position: relative; }

/* ==========================================================================
   Problem section
   ========================================================================== */
.problem { padding: 100px 0; }

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.problem-list {
  display: grid;
  gap: 4px;
}

.problem-item {
  display: flex;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.problem-item:first-child { border-top: 1px solid var(--line); }

.problem-icon {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.problem-item p { color: var(--ink); font-size: 1.02rem; }

.problem-closer {
  background: var(--accent-tint);
  color: var(--ink);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
  padding: 36px;
  align-self: start;
}

.problem-closer p:first-child {
  font-family: var(--font-serif);
  color: var(--navy);
  font-size: 1.4rem;
  line-height: 1.4;
  margin-bottom: 14px;
}

.problem-closer p:last-child { color: var(--ink-soft); font-size: 0.95rem; }

/* ==========================================================================
   What we do — pillars
   ========================================================================== */
.pillars { padding: 100px 0; background: var(--paper-alt); }

.pillar-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.pillar-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-soft);
}

.pillar-tag {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent-dark);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.pillar-card h3 {
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.pillar-card > p {
  color: var(--ink-soft);
  margin-bottom: 26px;
  font-size: 1rem;
}

.pillar-deliverables { display: grid; gap: 12px; }

.pillar-deliverables li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.95rem;
  color: var(--ink);
}

.pillar-deliverables svg { flex: none; margin-top: 3px; }

/* ==========================================================================
   How we work — engagement tiers
   ========================================================================== */
.tiers { padding: 100px 0; }

.tier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.tier {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.tier-num {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  color: var(--accent-tint);
  -webkit-text-stroke: 1.5px var(--accent);
  color: transparent;
  line-height: 1;
}

.tier-body h3 {
  font-size: 1.3rem;
  margin-bottom: 6px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.tier-meta {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-tint);
  padding: 4px 10px;
  border-radius: 20px;
}

.tier-body p { color: var(--ink-soft); max-width: 620px; }

.tier-arrow {
  display: none;
}

/* ==========================================================================
   Why us — credibility
   ========================================================================== */
.credibility {
  padding: 100px 0;
  background: var(--paper-alt);
  color: var(--ink);
}

.cred-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.cred-item {
  background: var(--card);
  padding: 30px 28px;
  display: flex;
  gap: 16px;
}

.cred-item svg { flex: none; margin-top: 2px; }

.cred-item p { font-size: 0.98rem; color: var(--ink); line-height: 1.55; }

/* ==========================================================================
   Founders
   ========================================================================== */
.founders { padding: 100px 0; }

.founder-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.founder-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-soft);
}

.founder-top {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}

.founder-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  flex: none;
  border: 2px solid var(--accent);
}

.founder-name { font-size: 1.35rem; margin-bottom: 4px; }
.founder-role { font-size: 0.88rem; color: var(--accent-dark); font-weight: 700; }

.founder-card p.bio { color: var(--ink-soft); margin-bottom: 22px; }

.founder-credentials {
  font-size: 0.85rem;
  color: var(--ink);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-weight: 600;
}

.founders-intro {
  max-width: 760px;
  margin: 0 auto 56px;
  text-align: center;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact { padding: 100px 0 120px; background: var(--paper-alt); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.contact-info h2 { font-size: clamp(1.7rem, 1.3rem + 1.6vw, 2.4rem); margin-bottom: 18px; line-height: 1.18; }
.contact-info p { color: var(--ink-soft); margin-bottom: 22px; max-width: 460px; }

.contact-points { display: grid; gap: 18px; margin-top: 32px; }
.contact-point { display: flex; gap: 14px; align-items: flex-start; }
.contact-point svg { flex: none; margin-top: 2px; }
.contact-point strong { display: block; font-size: 0.95rem; color: var(--navy); }
.contact-point span { font-size: 0.88rem; color: var(--ink-soft); }

.contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-card);
}

.form-row { display: grid; gap: 8px; margin-bottom: 20px; }
.form-row label { font-size: 0.85rem; font-weight: 700; color: var(--navy); }

.form-row input,
.form-row textarea {
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 0.95rem;
  background: var(--paper);
  color: var(--ink);
  resize: vertical;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-note {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 16px;
  line-height: 1.55;
}
.form-note a { color: var(--accent-dark); font-weight: 600; }

.form-status {
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--accent-dark);
  display: none;
}
.form-status.visible { display: block; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 32px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 28px;
}

.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-brand img { width: 26px; height: 26px; }
.footer-brand span { font-family: var(--font-serif); color: var(--white); font-size: 1.1rem; }

.footer-links { display: flex; flex-wrap: wrap; gap: 26px; }
.footer-links a { font-size: 0.88rem; color: rgba(255,255,255,0.72); }
.footer-links a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (min-width: 640px) {
  .problem-list { grid-template-columns: 1fr; }
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .cred-grid { grid-template-columns: repeat(2, 1fr); }
  .founder-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 860px) {
  .problem-grid { grid-template-columns: 1.3fr 1fr; }
  .contact-grid { grid-template-columns: 0.9fr 1.1fr; }
  .cred-grid { grid-template-columns: repeat(3, 1fr); }
  .tier { grid-template-columns: 140px 1fr; }
}

@media (max-width: 859px) {
  .nav-links { display: none; }
  .nav-cta .btn-outline { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 20px;
  }
  .nav-links.open a { padding: 10px 0; width: 100%; }
}

@media (min-width: 1000px) {
  .pillar-grid { gap: 32px; }
}