:root {
  --bg: #f4fbfd;
  --surface: #ffffff;
  --text: #163047;
  --muted: #567084;
  --primary: #118ab2;
  --primary-dark: #0c6f91;
  --accent: #28a745;
  --border: #d8e8ef;
  --shadow: 0 12px 28px rgba(17, 138, 178, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eff9fc 0%, #f8fdff 70%);
  line-height: 1.6;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  z-index: 20;
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 72px;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
}

.brand small {
  display: block;
  color: var(--muted);
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--primary);
  color: white;
  display: inline-grid;
  place-items: center;
  font-weight: 800;
}

.primary-nav a {
  color: var(--text);
  margin-left: 1rem;
  text-decoration: none;
  font-weight: 600;
}

.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.35fr 1fr;
}

.eyebrow {
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--primary-dark);
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.2;
  margin: 0.25rem 0 1rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
}

.hero-actions,
.footer-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.4rem;
}

.btn {
  text-decoration: none;
  padding: 0.72rem 1.1rem;
  border-radius: 0.6rem;
  font-weight: 700;
  border: 1px solid transparent;
  display: inline-flex;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-ghost {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-whatsapp {
  background: var(--accent);
  color: white;
}

.trust-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.2rem;
  box-shadow: var(--shadow);
}

.doctor-tabs-section,
.services-section,
.site-footer {
  padding: 3rem 0;
}

.section-subtitle {
  color: var(--muted);
}

.tab-controls {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.tab-btn {
  border: 2px solid var(--border);
  background: white;
  color: var(--text);
  border-radius: 0.9rem;
  padding: 1rem;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
}

.tab-btn small {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-weight: 600;
}

.tab-btn.active {
  border-color: var(--primary);
  background: #edf8fb;
}

.doctor-panel {
  margin-top: 1.2rem;
  display: none;
  background: white;
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  padding: 1.3rem;
}

.doctor-panel.active {
  display: block;
}

.doctor-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.2rem;
}

.doctor-layout img {
  width: 100%;
  border-radius: 0.9rem;
  border: 1px solid var(--border);
}

.doctor-title {
  color: var(--primary-dark);
  font-weight: 700;
  margin-top: -0.35rem;
}

.service-list {
  padding-left: 1.2rem;
}

.services-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.service-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #eaf6fb;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.2rem;
}

.floating-whatsapp {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  gap: 0.5rem;
  z-index: 30;
}

.floating-whatsapp a {
  text-decoration: none;
  background: var(--accent);
  color: white;
  font-weight: 700;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  box-shadow: 0 10px 20px rgba(40, 167, 69, 0.25);
}

@media (max-width: 900px) {
  .hero-grid,
  .doctor-layout,
  .footer-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .tab-controls {
    grid-template-columns: 1fr;
  }

  .primary-nav {
    display: none;
  }
}