/* ============================================================
   AirSeal – Premium Layer (experimental, layered on style.css)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ── Typography ─────────────────────────────────────────── */
body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ─────────────────────────────────────────────── */
header {
  box-shadow: 0 1px 0 rgba(0,0,0,.07), 0 2px 16px rgba(0,0,0,.06);
}
.site-nav a {
  letter-spacing: .01em;
  position: relative;
  padding-bottom: 2px;
}
.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: width .22s ease;
}
.site-nav a:hover::after,
.site-nav a.active::after { width: 100%; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, #2AA9E0 0%, #1a8ab5 100%);
  box-shadow: 0 4px 16px rgba(26,115,232,.32);
  letter-spacing: .015em;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #1360d4 0%, #0c41a8 100%);
  box-shadow: 0 8px 26px rgba(26,115,232,.45);
  transform: translateY(-2px);
  text-decoration: none;
}

/* ── Trust Strip ─────────────────────────────────────────── */
#trust-strip {
  background: var(--navy);
  padding: 1.6rem 0;
}
.trust-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: .2rem;
}
.trust-item .t-num {
  font-size: 1.85rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
  letter-spacing: -.04em;
}
.trust-item .t-label {
  font-size: .7rem;
  font-weight: 600;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
  letter-spacing: .12em;
  line-height: 1.5;
}
.trust-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.1);
  flex-shrink: 0;
}
@media (max-width: 640px) {
  .trust-inner { justify-content: center; gap: 2rem; }
  .trust-divider { display: none; }
}

/* ── Process section ─────────────────────────────────────── */
#process { background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 100%); }

#process .section-head h2 {
  letter-spacing: -.02em;
  position: relative;
  padding-bottom: 1rem;
}
#process .section-head h2::after {
  content: '';
  display: block;
  width: 56px; height: 4px;
  background: var(--blue);
  border-radius: 2px;
  margin: .8rem auto 0;
}

.proc-card-front {
  border-top: 3px solid var(--blue);
}
.proc-card:not(.flipped):hover {
  transform: translateY(-6px);
}
.proc-card:not(.flipped):hover .proc-card-front {
  box-shadow: 0 18px 52px rgba(0,0,0,.11), 0 0 0 1px rgba(26, 115, 232, 0.35);
  border-color: rgba(26, 115, 232, 0.35);
}

/* ── CTA section ─────────────────────────────────────────── */
#cta-section {
  background: linear-gradient(135deg, #eef3fb 0%, #e4ecf7 100%);
  position: relative;
  overflow: hidden;
}
#cta-section::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(26,115,232,.07) 0%, transparent 65%);
  pointer-events: none;
}
.cta-text > p { font-size: 1.1rem; line-height: 1.9; }
.cta-team-label { font-size: 1.5rem; letter-spacing: .01em; }
.cta-form-card {
  box-shadow: 0 16px 56px rgba(0,0,0,.13);
  border: 1px solid rgba(255,255,255,.9);
}

/* ── Multi-step CTA form ─────────────────────────────────── */
.cta-prog { display: flex; gap: .45rem; margin-bottom: 1.25rem; }
.cta-dot { width: 8px; height: 8px; border-radius: 50%; background: #d1dce8; transition: background .25s, transform .25s; }
.cta-dot.active { background: var(--blue); transform: scale(1.3); }
.cta-dot.done   { background: var(--blue); opacity: .45; }
.cta-step { display: none; }
.cta-step.active { display: block; }
.cta-qlabel { font-size: .9rem; font-weight: 700; color: var(--navy); margin-bottom: .6rem; }
.cta-radio-group, .cta-check-group { display: flex; flex-direction: column; gap: .45rem; margin-bottom: 1rem; }
.cta-radio-group label, .cta-check-group label { display: flex; align-items: center; gap: .55rem; font-size: .9rem; color: var(--text-muted); cursor: pointer; }
.cta-radio-group input, .cta-check-group input { accent-color: var(--blue); width: 15px; height: 15px; flex-shrink: 0; cursor: pointer; }
.cta-back-btn { background: none; border: none; color: var(--blue); font-size: .82rem; font-weight: 700; cursor: pointer; padding: 0; margin-bottom: .85rem; display: inline-flex; align-items: center; gap: .25rem; opacity: .8; transition: opacity .2s; }
.cta-back-btn:hover { opacity: 1; }

/* ── Form focus polish ───────────────────────────────────── */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  box-shadow: 0 0 0 3px rgba(26,115,232,.13);
}

/* ── Footer refinement ───────────────────────────────────── */
footer {
  background: linear-gradient(180deg, #0f1d38 0%, #0a1428 100%);
}
.footer-nav a {
  letter-spacing: .01em;
}