/* ============================================
   Tenét — Design System
   Live by what matters.
   ============================================ */

:root {
  --navy: #4A5D7A;
  --navy-deep: #3A4A62;
  --navy-soft: rgba(74, 93, 122, 0.08);
  --ink: #2E3744;
  --ink-soft: #5C6470;
  --white: #FFFFFF;
  --offwhite: #F7F6F4;
  --line: rgba(74, 93, 122, 0.16);

  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'DM Sans', -apple-system, sans-serif;

  --max-width: 1080px;
  --max-prose: 640px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* ---------- Typography ---------- */

h1, h2, h3, .serif {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.15;
}

h1 { font-size: clamp(2.75rem, 6vw, 4.5rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(2rem, 4vw, 2.875rem); }
h3 { font-size: 1.5rem; }

.eyebrow {
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 1.25rem;
}

.lead {
  font-size: 1.25rem;
  line-height: 1.65;
  color: var(--ink-soft);
}

.pull-quote {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.3;
  color: var(--navy);
}

/* ---------- Layout ---------- */

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

.prose { max-width: var(--max-prose); }

section { padding: 7rem 0; }

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

.center { text-align: center; }
.center .prose { margin-left: auto; margin-right: auto; }

/* ---------- Navigation ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wordmark {
  font-family: var(--serif);
  font-size: 1.625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 0.875rem 2rem;
  border-radius: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  border: 1px solid var(--navy);
}

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

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

/* ---------- Hero ---------- */

.hero {
  padding: 9rem 0 8rem;
  text-align: center;
}

.hero .eyebrow { margin-bottom: 2rem; }

.hero h1 { max-width: 820px; margin: 0 auto 1.75rem; }

.hero .lead { max-width: 560px; margin: 0 auto 3rem; }

/* ---------- Cards ---------- */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 2.75rem 2.25rem;
  border-radius: 2px;
}

.card h3 { margin-bottom: 1rem; }

.card p { font-size: 0.9844rem; color: var(--ink-soft); }

.card .card-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 1.5rem;
}

/* ---------- Waitlist form ---------- */

.waitlist-form {
  display: flex;
  gap: 0.75rem;
  max-width: 480px;
  margin: 0 auto;
}

.waitlist-form input {
  flex: 1;
  font-family: var(--sans);
  font-size: 1rem;
  padding: 0.875rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--white);
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}

.waitlist-form input:focus { border-color: var(--navy); }

.form-note {
  font-size: 0.875rem;
  color: var(--ink-soft);
  margin-top: 1rem;
}

.form-success {
  display: none;
  font-family: var(--serif);
  font-size: 1.375rem;
  font-style: italic;
  color: var(--navy);
  padding: 1rem 0;
}

/* ---------- Lists & dividers ---------- */

.value-list { list-style: none; margin-top: 3rem; }

.value-list li {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.value-list li:last-child { border-bottom: 1px solid var(--line); }

.value-list h3 { margin-bottom: 0.5rem; }

.value-list p { color: var(--ink-soft); max-width: var(--max-prose); }

.divider {
  width: 48px;
  height: 1px;
  background: var(--navy);
  margin: 2.5rem auto;
}

/* ---------- Footer ---------- */

footer {
  background: var(--offwhite);
  border-top: 1px solid var(--line);
  padding: 4.5rem 0 3rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  text-align: center;
}

.footer-tagline {
  font-family: var(--serif);
  font-size: 1.625rem;
  font-style: italic;
  color: var(--navy);
  margin-bottom: 1.5rem;
}

.footer-credibility {
  font-size: 0.9375rem;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0 auto 2.5rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--ink-soft);
  text-decoration: none;
}

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

.footer-copy { font-size: 0.8125rem; color: var(--ink-soft); opacity: 0.7; }

/* ---------- Page header (interior pages) ---------- */

.page-header {
  padding: 7rem 0 5rem;
  text-align: center;
  background: var(--offwhite);
}

.page-header h1 { max-width: 760px; margin: 0 auto 1.5rem; }

.page-header .lead { max-width: 560px; margin: 0 auto; }

/* ---------- Product feature rows ---------- */

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 4rem 0;
  border-top: 1px solid var(--line);
}

.feature-row:first-of-type { border-top: none; }

.feature-visual {
  background: var(--offwhite);
  border: 1px solid var(--line);
  border-radius: 2px;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-visual span {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-style: italic;
  color: var(--navy);
  opacity: 0.55;
  padding: 2rem;
  text-align: center;
}

.status-pill {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--navy);
  background: var(--navy-soft);
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

/* ---------- Responsive ---------- */

@media (max-width: 820px) {
  section { padding: 4.5rem 0; }
  .hero { padding: 5.5rem 0 5rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 2rem; padding: 3rem 0; }
  .nav-links { gap: 1.25rem; }
  .nav-links a:not(.btn) { display: none; }
  .waitlist-form { flex-direction: column; }
}