/* Zena Landing — Stripe/Linear aesthetic
   Brand: Brandtuit (company) / Zena (product)
   Audience: PE partners + CPG brand leaders
   Design: Clean white, blue/gold/purple accents, airy/spacious
*/

/* ── Tokens ── */
:root {
  --white:    #ffffff;
  --bg:       #f8f9fb;
  --surface:  #ffffff;
  --border:   #e5e7eb;
  --muted:    #6b7280;
  --text:     #111827;
  --text-2:   #374151;

  --blue:     #2563eb;
  --blue-lt:  #dbeafe;
  --gold:     #d97706;
  --gold-lt:  #fef3c7;
  --purple:   #7c3aed;
  --purple-lt:#ede9fe;

  --r-sm:  6px;
  --r-md: 10px;
  --r-lg: 16px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.07), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.05);

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-w: 1140px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); color: var(--text); background: var(--white); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ── Layout helpers ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 40px; }
@media (max-width: 768px) { .container { padding: 0 20px; } }

/* ── Navbar ── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-logo {
  width: 32px; height: 32px;
  background: var(--blue);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
}
.nav-logo svg { width: 18px; height: 18px; }
.nav-name {
  font-size: 1.125rem; font-weight: 700; color: var(--text); letter-spacing: -.01em;
}
.nav-tagline {
  font-size: .75rem; color: var(--muted); font-weight: 400;
  border-left: 1px solid var(--border); padding-left: 10px; margin-left: 2px;
}
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-link {
  font-size: .875rem; font-weight: 500; color: var(--muted);
  padding: 6px 14px; border-radius: var(--r-sm);
  transition: color .15s, background .15s;
}
.nav-link:hover { color: var(--text); background: var(--bg); }
@media (max-width: 640px) { .nav-tagline, .nav-links { display: none; } }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  font-family: var(--font); font-size: .9375rem; font-weight: 600;
  padding: 11px 22px; border-radius: var(--r-md); border: none; cursor: pointer;
  transition: transform .12s, box-shadow .12s, opacity .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--blue); color: #fff;
  box-shadow: 0 1px 3px rgba(37,99,235,.35), 0 4px 12px rgba(37,99,235,.20);
}
.btn-primary:hover { box-shadow: 0 4px 16px rgba(37,99,235,.35), 0 8px 24px rgba(37,99,235,.20); }

.btn-ghost {
  background: transparent; color: var(--text-2);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { background: var(--bg); border-color: #d1d5db; }

.btn-lg { font-size: 1rem; padding: 14px 28px; border-radius: var(--r-lg); }
.btn-sm { font-size: .8125rem; padding: 8px 16px; border-radius: var(--r-sm); }

/* ── Badges / pills ── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: .75rem; font-weight: 600; letter-spacing: .02em;
  padding: 4px 10px; border-radius: 20px;
}
.badge-blue   { background: var(--blue-lt);  color: var(--blue); }
.badge-gold   { background: var(--gold-lt);  color: var(--gold); }
.badge-purple { background: var(--purple-lt); color: var(--purple); }

/* ── Section rhythm ── */
section { padding: 88px 0; }
.section-eyebrow {
  font-size: .75rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--blue); margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700;
  letter-spacing: -.025em; line-height: 1.15; color: var(--text); margin-bottom: 16px;
}
.section-sub {
  font-size: 1.0625rem; color: var(--muted); line-height: 1.65;
  max-width: 560px;
}

/* ── HERO ── */
.hero {
  padding: 80px 0 100px;
  background: var(--white);
  overflow: hidden;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: center;
}
.hero-content { grid-column: 1; }
.hero-eyebrow { margin-bottom: 20px; }
.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800; letter-spacing: -.035em; line-height: 1.08;
  color: var(--text); margin-bottom: 24px;
}
.hero-title span.blue   { color: var(--blue); }
.hero-title span.gold   { color: var(--gold); }
.hero-title span.purple  { color: var(--purple); }
.hero-body {
  font-size: 1.0625rem; color: var(--text-2); line-height: 1.7;
  margin-bottom: 36px; max-width: 480px;
}
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.hero-note {
  margin-top: 16px; font-size: .8125rem; color: var(--muted);
}
.hero-image-wrap {
  grid-column: 2;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0,0,0,.06);
  aspect-ratio: 4/3;
}
.hero-image-wrap img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-image-wrap { grid-column: 1; order: -1; }
  .hero-body { max-width: 100%; }
}

/* ── SOCIAL PROOF BAR ── */
.proof-bar {
  background: var(--bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.proof-bar-inner {
  display: flex; align-items: center; gap: 40px; flex-wrap: wrap;
}
.proof-label {
  font-size: .75rem; font-weight: 600; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted); white-space: nowrap;
}
.proof-items { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.proof-item { display: flex; align-items: center; gap: 8px; font-size: .875rem; font-weight: 500; color: var(--text-2); }
.proof-item svg { flex-shrink: 0; color: var(--blue); }

/* ── PRODUCT SECTION ── */
.product-section { background: var(--white); }
.product-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start;
}
.product-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 40px;
}
.product-card .badge { margin-bottom: 20px; }
.product-card h3 {
  font-size: 1.5rem; font-weight: 700; letter-spacing: -.02em;
  color: var(--text); margin-bottom: 12px; line-height: 1.2;
}
.product-card p { color: var(--text-2); line-height: 1.65; margin-bottom: 24px; }
.product-meta { display: flex; flex-direction: column; gap: 8px; margin-top: 20px; }
.product-meta-item { display: flex; align-items: center; gap: 10px; font-size: .875rem; color: var(--text-2); }
.product-meta-item .dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.dot-blue   { background: var(--blue); }
.dot-gold   { background: var(--gold); }
.dot-purple { background: var(--purple); }
.product-details { padding-top: 8px; }
.product-details h2 { margin-bottom: 16px; }
.product-details p { color: var(--text-2); line-height: 1.7; margin-bottom: 28px; }
.detail-list { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 36px; }
.detail-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: .9375rem; color: var(--text-2); line-height: 1.5;
}
.detail-list li svg { flex-shrink: 0; margin-top: 2px; color: var(--blue); }
.price-block {
  display: inline-flex; align-items: baseline; gap: 6px;
  background: var(--blue-lt); border-radius: var(--r-md); padding: 16px 24px;
  margin-bottom: 28px;
}
.price-block .amount { font-size: 1.75rem; font-weight: 800; color: var(--blue); letter-spacing: -.03em; }
.price-block .note { font-size: .8125rem; color: var(--blue); opacity: .75; font-weight: 500; }
@media (max-width: 900px) { .product-grid { grid-template-columns: 1fr; gap: 48px; } }

/* ── CREDIBILITY SECTION ── */
.credibility { background: var(--bg); }
.credibility-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}
.cred-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 32px;
  box-shadow: var(--shadow-sm);
}
.cred-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.cred-icon-blue   { background: var(--blue-lt); }
.cred-icon-gold   { background: var(--gold-lt); }
.cred-icon-purple { background: var(--purple-lt); }
.cred-icon svg { width: 22px; height: 22px; }
.cred-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.cred-card p  { font-size: .875rem; color: var(--muted); line-height: 1.6; }
.cred-card strong { color: var(--text-2); }
@media (max-width: 768px) { .credibility-grid { grid-template-columns: 1fr; } }

/* ── WHO IT'S FOR ── */
.audience { background: var(--white); }
.audience-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.aud-card {
  border: 1.5px solid var(--border); border-radius: var(--r-lg);
  padding: 40px; position: relative; overflow: hidden;
  background: var(--white);
}
.aud-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.aud-card.pe::before   { background: linear-gradient(90deg, var(--blue), var(--purple)); }
.aud-card.cpg::before  { background: linear-gradient(90deg, var(--gold), var(--blue)); }
.aud-card-eyebrow { margin-bottom: 14px; }
.aud-card h3 { font-size: 1.25rem; font-weight: 700; color: var(--text); margin-bottom: 10px; letter-spacing: -.01em; }
.aud-card p  { font-size: .9375rem; color: var(--muted); line-height: 1.65; }
.aud-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: .75rem; font-weight: 600; margin-top: 20px;
  padding: 5px 12px; border-radius: 20px;
}
.aud-tag-pe    { background: var(--blue-lt);   color: var(--blue); }
.aud-tag-cpg   { background: var(--gold-lt);   color: var(--gold); }
@media (max-width: 768px) { .audience-grid { grid-template-columns: 1fr; } }

/* ── CTA BAND ── */
.cta-band {
  background: var(--text); color: #fff; padding: 96px 0;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ''; position: absolute; top: -100px; right: -100px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
  pointer-events: none;
}
.cta-band::after {
  content: ''; position: absolute; bottom: -80px; left: -60px;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,.20) 0%, transparent 70%);
  pointer-events: none;
}
.cta-band .container { position: relative; z-index: 1; text-align: center; }
.cta-band h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 800;
  letter-spacing: -.03em; line-height: 1.1; margin-bottom: 16px;
}
.cta-band p { font-size: 1rem; color: rgba(255,255,255,.65); margin-bottom: 40px; max-width: 480px; margin-left: auto; margin-right: auto; line-height: 1.6; }
.cta-actions { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.cta-band .btn-primary {
  background: #fff; color: var(--blue);
  box-shadow: 0 1px 3px rgba(0,0,0,.2), 0 4px 12px rgba(0,0,0,.1);
}
.cta-band .btn-primary:hover { background: #f0f4ff; box-shadow: 0 4px 16px rgba(0,0,0,.25), 0 8px 24px rgba(0,0,0,.1); }
.cta-band .btn-ghost { border-color: rgba(255,255,255,.25); color: rgba(255,255,255,.8); }
.cta-band .btn-ghost:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.4); color: #fff; }
.cta-note { margin-top: 14px; font-size: .8125rem; color: rgba(255,255,255,.45); }

/* ── FOOTER ── */
.footer {
  background: var(--bg); border-top: 1px solid var(--border);
  padding: 40px 0 32px;
}
.footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; align-items: center; gap: 8px; }
.footer-logo {
  width: 26px; height: 26px; background: var(--blue);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
}
.footer-logo svg { width: 14px; height: 14px; }
.footer-name { font-size: .9375rem; font-weight: 700; color: var(--text); }
.footer-copy { font-size: .8125rem; color: var(--muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: .8125rem; color: var(--muted); transition: color .15s; }
.footer-links a:hover { color: var(--text); }

/* ── Divider decoration ── */
.section-divider {
  width: 48px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--purple));
  margin: 0 0 28px;
}