/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a2e;
  line-height: 1.6;
  background: #fff;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }

/* === Layout === */
.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.center { text-align: center; }
.section { padding: 80px 0; }
.bg-light { background: #f8f9fc; }
.bg-dark { background: #1a1a2e; color: #fff; }

/* === Nav === */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  border-bottom: 1px solid #e8e8ee;
  padding: 16px 0;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { font-size: 1.5rem; font-weight: 800; color: #1a1a2e; }
.logo span { color: #4a6cf7; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 0.95rem; font-weight: 500; color: #555; transition: color 0.2s; }
.nav-links a:hover { color: #1a1a2e; }

/* === Buttons === */
.btn {
  display: inline-block; padding: 12px 28px;
  background: #4a6cf7; color: #fff;
  border-radius: 8px; font-weight: 600; font-size: 1rem;
  border: 2px solid #4a6cf7;
  transition: all 0.2s; cursor: pointer;
}
.btn:hover { background: #3a5ce5; border-color: #3a5ce5; }
.btn-sm { padding: 8px 20px; font-size: 0.9rem; }
.btn-lg { padding: 16px 36px; font-size: 1.1rem; }
.btn-outline { background: transparent; color: #4a6cf7; }
.btn-outline:hover { background: #4a6cf7; color: #fff; }
.btn-white { background: #fff; color: #1a1a2e; border-color: #fff; }
.btn-white:hover { background: #f0f0f0; border-color: #f0f0f0; }

/* === Hero === */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, #f8f9fc 0%, #fff 100%);
}
.hero h1 {
  font-size: 3.2rem; font-weight: 800; line-height: 1.15;
  margin-bottom: 24px; letter-spacing: -0.02em;
}
.hero h1 em { font-style: normal; color: #4a6cf7; }
.hero-sub {
  font-size: 1.25rem; color: #555; max-width: 640px;
  margin: 0 auto 36px; line-height: 1.7;
}
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.hero-note { font-size: 0.9rem; color: #888; margin-top: 8px; }

/* === Section Titles === */
.section-title {
  font-size: 2.2rem; font-weight: 700; text-align: center;
  margin-bottom: 48px; letter-spacing: -0.01em;
}

/* === Steps === */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.step { text-align: center; }
.step-num {
  width: 52px; height: 52px; border-radius: 50%;
  background: #4a6cf7; color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; font-weight: 700;
  margin: 0 auto 20px;
}
.step h3 { font-size: 1.15rem; margin-bottom: 10px; }
.step p { color: #666; font-size: 0.95rem; }

/* === Cards Grid === */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border: 1px solid #e8e8ee; border-radius: 12px;
  padding: 28px; text-align: center; transition: box-shadow 0.2s;
}
.card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }
.card-icon { font-size: 2rem; margin-bottom: 12px; }
.card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.card p { color: #666; font-size: 0.9rem; }

/* === Split Section === */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.split.reverse { direction: rtl; }
.split.reverse > * { direction: ltr; }
.split-text h2 { font-size: 2rem; font-weight: 700; margin-bottom: 16px; }
.split-text p { color: #555; font-size: 1.05rem; margin-bottom: 14px; }

/* === Phone Mock (SMS bubbles) === */
.phone-mock {
  background: #f0f0f5; border-radius: 24px; padding: 28px;
  max-width: 340px; margin: 0 auto;
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}
.sms {
  padding: 12px 16px; border-radius: 18px;
  font-size: 0.9rem; line-height: 1.5;
  margin-bottom: 10px; max-width: 85%;
}
.sms-out {
  background: #4a6cf7; color: #fff;
  margin-left: auto; border-bottom-right-radius: 4px;
}
.sms-in {
  background: #fff; color: #1a1a2e;
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* === Scam Section === */
.section-scam { background: #fef7f7; }

/* === Pricing === */
.pricing-card {
  background: #fff; border: 2px solid #4a6cf7; border-radius: 16px;
  padding: 48px 40px; max-width: 420px; margin: 0 auto;
  box-shadow: 0 8px 30px rgba(74,108,247,0.1);
}
.price { font-size: 3rem; font-weight: 800; color: #1a1a2e; }
.price span { font-size: 1.2rem; font-weight: 500; color: #888; }
.price-sub { color: #888; margin-bottom: 28px; }
.pricing-features { text-align: left; margin-bottom: 28px; }
.pricing-features li {
  padding: 8px 0; padding-left: 28px; position: relative;
  color: #444; font-size: 1rem;
}
.pricing-features li::before {
  content: "✓"; position: absolute; left: 0;
  color: #4a6cf7; font-weight: 700;
}
.trial-note { font-size: 0.9rem; color: #888; margin-bottom: 24px; }

/* === FAQ === */
.faq-list { max-width: 700px; margin: 0 auto; }
.faq {
  border-bottom: 1px solid #e8e8ee; padding: 20px 0;
}
.faq summary {
  font-size: 1.1rem; font-weight: 600; cursor: pointer;
  list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.faq summary::after { content: "+"; font-size: 1.5rem; color: #888; transition: transform 0.2s; }
.faq[open] summary::after { content: "−"; }
.faq p { margin-top: 12px; color: #555; font-size: 0.95rem; line-height: 1.7; }

/* === Footer === */
.footer { padding: 40px 0; border-top: 1px solid #e8e8ee; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.footer-brand p { color: #888; font-size: 0.85rem; margin-top: 4px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: #888; font-size: 0.9rem; }
.footer-links a:hover { color: #1a1a2e; }

/* === Dark Section === */
.bg-dark h2 { font-size: 2.2rem; margin-bottom: 16px; }
.bg-dark p { color: #ccc; font-size: 1.1rem; margin-bottom: 28px; max-width: 540px; margin-left: auto; margin-right: auto; }

/* === Forms (signup page) === */
.form-section { max-width: 520px; margin: 0 auto; padding-top: 40px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 6px; color: #333; }
.form-group input {
  width: 100%; padding: 14px 16px;
  border: 1px solid #ddd; border-radius: 8px;
  font-size: 1rem; font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus { outline: none; border-color: #4a6cf7; box-shadow: 0 0 0 3px rgba(74,108,247,0.1); }
.form-divider { border: none; border-top: 1px solid #e8e8ee; margin: 32px 0; }
.form-note { font-size: 0.85rem; color: #888; margin-top: 8px; }

/* === Welcome Page === */
.welcome-section { max-width: 600px; margin: 0 auto; padding-top: 40px; }
.welcome-section h1 { font-size: 2rem; margin-bottom: 24px; }
.welcome-steps { list-style: decimal; padding-left: 24px; }
.welcome-steps li { padding: 12px 0; font-size: 1.05rem; color: #333; }
.phone-number-display {
  background: #f0f4ff; border: 2px solid #4a6cf7; border-radius: 12px;
  padding: 20px; text-align: center; margin: 24px 0;
  font-size: 1.5rem; font-weight: 700; color: #4a6cf7;
}

/* === Responsive === */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 1.1rem; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .split, .split.reverse { grid-template-columns: 1fr; gap: 32px; }
  .nav-links a:not(.btn) { display: none; }
  .section { padding: 60px 0; }
  .pricing-card { padding: 32px 24px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .btn-lg { width: 100%; text-align: center; }
}