/* ============================================================
   LANDING PAGE — Apple-quality hero, features, social proof
   ============================================================ */

/* --- Hero --- */
.hero {
  padding: var(--sp-24) 0 var(--sp-16);
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, var(--gray-50) 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0,113,227,.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 6px 16px;
  background: var(--blue-light);
  color: var(--blue);
  border-radius: var(--r-pill);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--sp-6);
  letter-spacing: 0.01em;
}
.hero-title {
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--gray-900);
  margin-bottom: var(--sp-5);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.hero-title em {
  color: var(--blue);
  font-style: normal;
}
.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--gray-500);
  max-width: 560px;
  margin: 0 auto var(--sp-10);
  line-height: 1.55;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  margin-bottom: var(--sp-16);
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
  max-width: 860px;
  margin: 0 auto;
}
.stat-item {
  text-align: center;
}
.stat-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-top: var(--sp-1);
}

/* --- How It Works Steps --- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-8);
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 16.66%;
  right: 16.66%;
  height: 2px;
  background: var(--gray-200);
  z-index: 0;
}
.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-number {
  width: 64px;
  height: 64px;
  border-radius: var(--r-full);
  background: var(--blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: 700;
  margin: 0 auto var(--sp-5);
  box-shadow: 0 4px 14px rgba(0,113,227,.3);
}
.step-title {
  font-size: var(--text-md);
  font-weight: 600;
  margin-bottom: var(--sp-2);
  color: var(--gray-900);
}
.step-desc {
  font-size: var(--text-base);
  color: var(--gray-500);
  line-height: 1.6;
  max-width: 300px;
  margin: 0 auto;
}

/* --- Feature Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}
.feature-card {
  background: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: all var(--t-base) var(--ease);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--r-lg);
  background: var(--blue-light);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto var(--sp-5);
}
.feature-title {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--sp-2);
  color: var(--gray-900);
}
.feature-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.6;
}

/* --- Treatment Grid --- */
.treatment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}
.treatment-card {
  background: #fff;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--r-lg);
  padding: var(--sp-5) var(--sp-4);
  text-align: center;
  transition: all var(--t-base) var(--ease);
}
.treatment-card:hover {
  border-color: var(--blue);
  background: var(--blue-subtle);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.treatment-emoji {
  font-size: 32px;
  margin-bottom: var(--sp-2);
}
.treatment-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--sp-1);
}
.treatment-price {
  font-size: var(--text-xs);
  color: var(--gray-500);
}

/* --- Testimonials --- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
.testimonial {
  background: #fff;
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  box-shadow: var(--shadow-card);
}
.testimonial-stars {
  color: #FFB800;
  font-size: var(--text-md);
  margin-bottom: var(--sp-4);
  letter-spacing: 2px;
}
.testimonial-text {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: var(--sp-5);
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--r-full);
  background: var(--blue-light);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-sm);
}
.testimonial-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-900);
}
.testimonial-location {
  font-size: var(--text-xs);
  color: var(--gray-500);
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--blue) 0%, #0052cc 50%, #003d99 100%);
  color: #fff;
  padding: var(--sp-20) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,.08), transparent 70%);
}
.cta-banner h2 {
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}
.cta-banner p {
  font-size: var(--text-lg);
  opacity: .85;
  margin-bottom: var(--sp-8);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}
.cta-banner .btn {
  background: #fff;
  color: var(--blue);
  font-weight: 600;
}
.cta-banner .btn:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
}

/* --- FAQ --- */
.faq-list {
  max-width: 700px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--gray-200);
}
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-5) 0;
  background: none;
  border: none;
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--gray-900);
  text-align: left;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease);
}
.faq-question:hover { color: var(--blue); }
.faq-arrow {
  font-size: var(--text-lg);
  transition: transform var(--t-base) var(--ease);
  color: var(--gray-400);
}
.faq-arrow.open { transform: rotate(45deg); color: var(--blue); }
.faq-answer {
  padding: 0 0 var(--sp-5);
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: 1.7;
}

/* --- Dentist CTA Card --- */
.dentist-cta {
  background: var(--gray-900);
  color: #fff;
  border-radius: var(--r-2xl);
  padding: var(--sp-12) var(--sp-10);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-10);
  align-items: center;
}
.dentist-cta h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}
.dentist-cta p {
  color: rgba(255,255,255,.65);
  font-size: var(--text-base);
  margin-bottom: var(--sp-6);
  line-height: 1.6;
}
.dentist-cta-benefits {
  list-style: none;
}
.dentist-cta-benefits li {
  padding: var(--sp-2) 0;
  font-size: var(--text-base);
  color: rgba(255,255,255,.75);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.dentist-cta-benefits li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--r-full);
  background: rgba(48,209,88,.2);
  color: var(--green);
  font-size: var(--text-xs);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.6);
  padding: var(--sp-12) 0 var(--sp-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-10);
  margin-bottom: var(--sp-10);
}
.footer-brand {
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--sp-3);
}
.footer-desc {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: rgba(255,255,255,.45);
  max-width: 280px;
}
.footer h4 {
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--sp-4);
  letter-spacing: 0.02em;
}
.footer-link {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255,255,255,.5);
  padding: var(--sp-1) 0;
  transition: color var(--t-fast) var(--ease);
  text-decoration: none;
}
.footer-link:hover { color: #fff; text-decoration: none; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: var(--sp-6);
  font-size: var(--text-xs);
  text-align: center;
  color: rgba(255,255,255,.3);
}

/* --- Trust Logos --- */
.trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-10);
  padding: var(--sp-8) 0;
  opacity: .4;
}
.trust-logo {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-500);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .treatment-grid { grid-template-columns: repeat(3, 1fr); }
  .dentist-cta { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .hero { padding: var(--sp-12) 0 var(--sp-10); }
  .hero-actions { flex-direction: column; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .steps-grid::before { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  .treatment-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
}