/* ==========================================================================
   TupleDecker — Site Stylesheet
   Brand colors: Primary #081B3A, Deep Blue #102B5A, Aqua #00D5D5,
   Teal #00B8A9, White #FFFFFF, Accent #2FE6D5
   Typography: Poppins (headings), Inter (body)
   ========================================================================== */

:root {
  --navy: #081B3A;
  --navy-deep: #102B5A;
  --aqua: #00D5D5;
  --teal: #00B8A9;
  --accent: #2FE6D5;
  --white: #FFFFFF;
  --ink: #1B2430;
  --muted: #5B6B82;
  --line: #E4E9F0;
  --bg-light: #F6F8FB;
  --radius: 10px;
  --max-width: 1160px;
  --shadow: 0 10px 30px rgba(8, 27, 58, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'Poppins', 'Inter', sans-serif;
  color: var(--navy);
  line-height: 1.25;
  margin: 0 0 0.6em;
  font-weight: 600;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.2rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--muted); }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--navy); }

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

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

section { padding: 84px 0; }
.section-tight { padding: 56px 0; }
.bg-light { background: var(--bg-light); }
.bg-navy {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--white);
}
.bg-navy h1, .bg-navy h2, .bg-navy h3, .bg-navy p, .bg-navy a:not(.btn) { color: var(--white); }
.bg-navy p { color: rgba(255,255,255,0.78); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.9em;
}
.bg-navy .eyebrow { color: var(--accent); }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--teal); color: var(--white) !important; }
.btn-primary:hover { background: var(--accent); box-shadow: 0 8px 20px rgba(0,184,169,0.35); }
.btn-outline { border-color: rgba(255,255,255,0.55); color: var(--white) !important; }
.btn-outline:hover { border-color: var(--accent); background: rgba(255,255,255,0.06); }
.btn-outline-navy { border-color: var(--navy); color: var(--navy) !important; }
.btn-outline-navy:hover { background: var(--navy); color: var(--white) !important; }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---- Header / Nav ---- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 27, 58, 0.97);
  backdrop-filter: blur(6px);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 34px; width: 34px; border-radius: 8px; flex: none; }
.brand-text { font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1.2rem; color: var(--white); }
.brand-text .accent { color: var(--accent); }
footer .footer-brand { margin-bottom: 14px; }
nav.main-nav { display: flex; align-items: center; gap: 30px; }
nav.main-nav a {
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  font-size: 0.95rem;
}
nav.main-nav a.active, nav.main-nav a:hover { color: var(--accent); }
.nav-cta { display: flex; align-items: center; gap: 20px; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.6rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  nav.main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--navy);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 26px;
    gap: 16px;
    display: none;
  }
  nav.main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .nav-cta .btn-primary { display: none; }
}

/* ---- Hero ---- */
.hero {
  padding: 100px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 85% 20%, rgba(0,213,213,0.16), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(47,230,213,0.10), transparent 40%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero p.lede { font-size: 1.15rem; max-width: 540px; }
.hero-badge {
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius);
  padding: 26px;
  background: rgba(255,255,255,0.04);
}
.hero-badge ul { margin: 0; padding-left: 20px; }
.hero-badge li { margin-bottom: 10px; color: rgba(255,255,255,0.85); }

/* ---- Cards / grids ---- */
.grid { display: grid; gap: 26px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 950px) { .grid-3, .grid-5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-3, .grid-2, .grid-5 { grid-template-columns: 1fr; } }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  height: 100%;
}
.card .icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--teal), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: var(--white); font-weight: 700; font-size: 1.2rem;
  margin-bottom: 18px;
}
.card ul { padding-left: 20px; margin: 12px 0 0; color: var(--muted); }
.card ul li { margin-bottom: 6px; }
.card-link { font-weight: 600; font-size: 0.9rem; }

.pillar-card {
  padding: 26px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
}
.pillar-card h3 { color: var(--white); }
.pillar-card p { color: rgba(255,255,255,0.72); margin-bottom: 0; }

/* ---- Process steps ---- */
.steps { display: flex; gap: 18px; flex-wrap: wrap; counter-reset: step; }
.step {
  flex: 1 1 180px;
  position: relative;
  padding: 24px 20px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.step h4 { margin-bottom: 6px; font-size: 1.02rem; }
.step p { font-size: 0.92rem; margin-bottom: 0; }

/* ---- CTA band ---- */
.cta-band {
  text-align: center;
  padding: 70px 0;
}
.cta-band h2 { max-width: 640px; margin-left: auto; margin-right: auto; }
.cta-band .btn-row { justify-content: center; }

/* ---- Persona / quote ---- */
.persona-card { text-align: left; }
.persona-card .goal { font-size: 0.85rem; color: var(--muted); margin-bottom: 4px; }
.persona-card .goal strong { color: var(--navy); }

blockquote.pull {
  border-left: 4px solid var(--teal);
  padding-left: 20px;
  font-size: 1.15rem;
  color: var(--navy);
  font-style: italic;
  margin: 0 0 1em;
}

/* ---- Footer ---- */
footer.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 26px;
}
footer.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 700px) { footer.site-footer .footer-grid { grid-template-columns: 1fr; } }
footer.site-footer h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 14px; }
footer.site-footer a { color: rgba(255,255,255,0.7); }
footer.site-footer a:hover { color: var(--accent); }
footer.site-footer ul { list-style: none; padding: 0; margin: 0; }
footer.site-footer li { margin-bottom: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
}
.social-row { display: flex; gap: 14px; }
.social-row a {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
}

/* ---- Contact form ---- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
form.contact-form label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--navy);
  margin: 16px 0 6px;
}
form.contact-form input,
form.contact-form textarea,
form.contact-form select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
}
form.contact-form textarea { min-height: 130px; resize: vertical; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 22px; }
.contact-info-item .icon {
  width: 42px; height: 42px; flex: none;
  border-radius: 10px;
  background: var(--bg-light);
  color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}

/* ---- Insights ---- */
.article {
  border-bottom: 1px solid var(--line);
  padding-bottom: 40px;
  margin-bottom: 40px;
}
.article:last-child { border-bottom: none; }
.article .eyebrow { color: var(--teal); }

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.max-lede { max-width: 680px; margin-left: auto; margin-right: auto; }