/* ============================================
   Comuvi Landing — styles.css
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #14151a;
  background: #fff;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: #4f8cff; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- Tokens ---------- */
:root {
  --accent: #4f8cff;
  --accent-strong: #2f6ff0;
  --accent-bg: rgba(79,140,255,.08);
  --text: #14151a;
  --text-soft: #5a5e68;
  --border: #e3e5ec;
  --bg-light: #f6f6f8;
  --radius: 16px;
  --radius-sm: 10px;
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; border-radius: 999px; border: none;
  background: var(--accent); color: #fff;
  font-weight: 700; font-size: 16px; cursor: pointer;
  transition: background .15s ease, transform .1s ease;
  text-decoration: none;
}
.btn-primary:hover { background: var(--accent-strong); }
.btn-primary:active { transform: scale(.97); }

.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; border-radius: 999px;
  border: 2px solid var(--border); background: transparent;
  color: var(--text); font-weight: 700; font-size: 16px;
  cursor: pointer; transition: border-color .15s ease;
  text-decoration: none;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 16px 36px; font-size: 18px; }
.btn-block { width: 100%; text-align: center; }

/* ---------- Navbar ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 24px; max-width: 1140px; margin: 0 auto;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 20px; color: var(--text);
  text-decoration: none; letter-spacing: -.02em;
}
.nav-links { display: flex; gap: 28px; flex: 1; justify-content: center; }
.nav-links a { color: var(--text-soft); font-weight: 600; font-size: 15px; transition: color .15s; }
.nav-links a:hover { color: var(--accent); }
.nav-actions { display: flex; gap: 10px; }
.nav-actions .btn-primary, .nav-actions .btn-outline { padding: 10px 20px; font-size: 14px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text); }

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav.open .nav-links, .nav.open .nav-actions {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0; background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 24px; gap: 12px;
  }
  .nav.open .nav-links { justify-content: flex-start; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background: linear-gradient(180deg, var(--accent-bg) 0%, transparent 100%);
}
.hero-content { max-width: 720px; margin: 0 auto; }
.hero-badge {
  display: inline-block; background: var(--accent-bg); color: var(--accent);
  padding: 6px 16px; border-radius: 999px; font-size: 13px; font-weight: 700;
  margin-bottom: 24px; border: 1px solid rgba(79,140,255,.2);
}
.hero h1 { font-size: 52px; font-weight: 900; line-height: 1.1; letter-spacing: -.03em; margin-bottom: 20px; }
.gradient { background: linear-gradient(135deg, #4f8cff, #2f6ff0, #6c5ce7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-sub { font-size: 20px; color: var(--text-soft); max-width: 560px; margin: 0 auto 32px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 16px; font-size: 14px; color: var(--text-soft); }

@media (max-width: 640px) {
  .hero { padding: 50px 0 40px; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 17px; }
}

/* ---------- Social proof ---------- */
.social-proof {
  padding: 30px 0; text-align: center;
  border-bottom: 1px solid var(--border);
}
.social-proof p { color: var(--text-soft); font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }

/* ---------- Features ---------- */
.features { padding: 80px 0; }
.section-header { text-align: center; max-width: 600px; margin: 0 auto 48px; }
.section-header h2 { font-size: 36px; font-weight: 900; letter-spacing: -.02em; margin-bottom: 12px; }
.section-header p { color: var(--text-soft); font-size: 18px; }
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.feature-card {
  background: var(--bg-light); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,.06); }
.feature-icon { color: var(--accent); margin-bottom: 16px; }
.feature-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.feature-card p { color: var(--text-soft); font-size: 15px; line-height: 1.5; }
.features-extra {
  text-align: center; margin-top: 40px; padding: 24px;
  background: var(--accent-bg); border-radius: var(--radius);
  font-size: 15px; color: var(--text-soft);
}
.features-extra strong { color: var(--text); }

@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

/* ---------- How it works ---------- */
.how-it-works { padding: 80px 0; background: var(--bg-light); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step { text-align: center; }
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; margin-bottom: 16px;
}
.step h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.step p { color: var(--text-soft); font-size: 15px; }

@media (max-width: 600px) { .steps { grid-template-columns: 1fr; gap: 40px; } }

/* ---------- Pricing ---------- */
.pricing { padding: 80px 0; }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.pricing-card {
  background: #fff; border: 2px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  position: relative;
}
.pricing-card.popular {
  border-color: var(--accent);
  box-shadow: 0 8px 30px rgba(79,140,255,.15);
  transform: scale(1.04);
}
.pricing-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; padding: 4px 16px;
  border-radius: 999px; font-size: 12px; font-weight: 700;
  white-space: nowrap;
}
.pricing-name { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.pricing-price { font-size: 40px; font-weight: 900; letter-spacing: -.02em; }
.pricing-price span { font-size: 16px; font-weight: 600; color: var(--text-soft); }
.pricing-desc { color: var(--text-soft); font-size: 14px; margin-bottom: 20px; }
.pricing-card ul { list-style: none; margin-bottom: 24px; }
.pricing-card li {
  padding: 8px 0; font-size: 15px; color: var(--text-soft);
  border-bottom: 1px solid var(--border);
}
.pricing-card li:last-child { border: none; }
.pricing-card li strong { color: var(--text); }

@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .pricing-card.popular { transform: none; }
}

/* ---------- FAQ ---------- */
.faq { padding: 80px 0; background: var(--bg-light); }
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-sm); margin-bottom: 10px;
  overflow: hidden;
}
.faq-item summary {
  padding: 18px 20px; cursor: pointer; font-weight: 700; font-size: 16px;
  list-style: none; display: flex; align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; margin-left: auto; font-size: 22px; color: var(--accent);
  font-weight: 400; transition: transform .2s;
}
.faq-item[open] summary::after { content: '-'; }
.faq-item p { padding: 0 20px 18px; color: var(--text-soft); font-size: 15px; line-height: 1.6; }

/* ---------- CTA ---------- */
.cta {
  padding: 80px 0; text-align: center;
  background: linear-gradient(135deg, #4f8cff, #2f6ff0);
  color: #fff;
}
.cta h2 { font-size: 36px; font-weight: 900; margin-bottom: 12px; }
.cta p { font-size: 18px; opacity: .85; margin-bottom: 28px; }
.cta .btn-primary { background: #fff; color: var(--accent-strong); }
.cta .btn-primary:hover { background: #f0f0f0; }

/* ---------- Footer ---------- */
.footer { padding: 40px 0; border-top: 1px solid var(--border); }
.footer-inner { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 18px; color: var(--text);
}
.footer-links { display: flex; gap: 20px; flex: 1; }
.footer-links a { color: var(--text-soft); font-size: 14px; font-weight: 600; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { color: var(--text-soft); font-size: 13px; }

@media (max-width: 600px) {
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}