/* ==========================================================================
   MS DENTAL CLINIC — Stylesheet
   ========================================================================== */

:root {
  --color-primary: #3B9CD9;
  --color-accent: #1A6FA8;
  --color-bg: #FFFFFF;
  --color-bg-secondary: #F0F7FC;
  --color-bg-tint: #EBF5FB;
  --color-text: #1A1A2E;
  --color-text-muted: #5A6A7A;
  --color-border: #DDEAF4;
  --color-white: #FFFFFF;
  --color-whatsapp: #25D366;

  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;

  --container-width: 1200px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;

  --shadow-sm: 0 2px 10px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 12px 32px rgba(26, 111, 168, 0.12);
  --shadow-lg: 0 20px 50px rgba(26, 111, 168, 0.16);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, p, figure { margin: 0; }
ul { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; background: none; border: none; cursor: pointer; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 18px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

svg.lucide { width: 1em; height: 1em; display: inline-block; vertical-align: middle; flex-shrink: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn svg { width: 19px; height: 19px; }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-lg { padding: 17px 34px; font-size: 1.05rem; }
.btn-white {
  background: #fff;
  color: var(--color-accent);
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.18);
}
.btn-nav-cta { display: none; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.site-header.is-scrolled {
  box-shadow: 0 4px 24px rgba(26, 26, 46, 0.08);
  border-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.18rem;
  color: var(--color-text);
}
.logo-icon { width: 28px; height: 28px; color: var(--color-primary); flex-shrink: 0; }

.main-nav ul { display: flex; gap: 36px; }
.nav-link {
  position: relative;
  font-weight: 500;
  font-size: 0.97rem;
  color: var(--color-text);
  padding: 6px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}
.nav-link:hover::after,
.nav-link.is-active::after { width: 100%; }
.nav-link.is-active { color: var(--color-accent); }

.header-actions { display: flex; align-items: center; gap: 18px; }

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  max-height: 0;
  overflow: hidden;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  transition: max-height var(--transition);
}
.mobile-menu.is-open { max-height: 420px; }
.mobile-menu ul { padding: 18px 24px 28px; display: flex; flex-direction: column; gap: 18px; }
.mobile-menu .btn { justify-content: center; margin-top: 8px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: 64px;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  gap: 48px;
  min-height: 86vh;
  padding-bottom: 56px;
}
.hero-kicker {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}
.hero-headline {
  font-size: clamp(2.3rem, 5.4vw, 3.6rem);
  color: var(--color-text);
  margin-bottom: 22px;
}
.hero-headline span { color: var(--color-primary); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 32px;
}
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}
.badge { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--color-text); }
.badge svg { width: 15px; height: 15px; color: var(--color-primary); }
.badge-sep { color: var(--color-border); }

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  min-height: 420px;
  background: linear-gradient(155deg, #FFFFFF 0%, var(--color-bg-tint) 60%, #DCEEFA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-visual-glow {
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(59, 156, 217, 0.25), transparent 70%);
  border-radius: 50%;
  top: -60px;
  right: -60px;
}
.hero-tooth {
  width: 46%;
  max-width: 220px;
  color: var(--color-primary);
  opacity: 0.85;
  filter: drop-shadow(0 24px 40px rgba(26, 111, 168, 0.18));
}
.hero-stat-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stat-card strong {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 5px;
}
.hero-stat-card strong svg { width: 16px; height: 16px; color: #F5B642; fill: #F5B642; }
.hero-stat-card span { font-size: 0.78rem; color: var(--color-text-muted); }
.hero-stat-card--top { top: 12%; left: 6%; }
.hero-stat-card--bottom { bottom: 14%; right: 8%; }

.hero-divider {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 60px;
  background: var(--color-bg-secondary);
  clip-path: polygon(0 100%, 100% 0, 100% 100%, 0% 100%);
}

/* ---------- Section heads ---------- */
.section-head { max-width: 620px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); margin-bottom: 14px; }
.section-head p { color: var(--color-text-muted); font-size: 1.05rem; }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Services ---------- */
.services { padding: 110px 0; background: var(--color-bg-secondary); }
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.service-card svg {
  width: 30px; height: 30px;
  color: var(--color-primary);
  margin-bottom: 18px;
}
.service-card h3 { font-size: 1.12rem; margin-bottom: 8px; }
.service-card p { color: var(--color-text-muted); font-size: 0.94rem; }

/* ---------- Before & After ---------- */
.before-after { padding: 110px 0; background: var(--color-bg-secondary); }
.ba-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.ba-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--color-bg-secondary);
  transition: transform var(--transition), box-shadow var(--transition);
}
.ba-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.ba-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
.ba-card figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 16px 18px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: #fff;
  background: linear-gradient(0deg, rgba(26, 26, 46, 0.78) 0%, rgba(26, 26, 46, 0) 100%);
}
.ba-note {
  margin-top: 44px;
  text-align: center;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.ba-note svg { width: 18px; height: 18px; color: var(--color-primary); }
.ba-note a { color: var(--color-accent); font-weight: 600; }
.ba-note a:hover { text-decoration: underline; }

/* ---------- Doctors ---------- */
.doctors { padding: 110px 0; }
.doctors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: 920px;
  margin: 0 auto;
}
.doctor-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.doctor-card:hover { border-color: var(--color-primary); }
.doctor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.doctor-card--offset { transform: translateY(0); }
.doctor-avatar {
  width: 76px; height: 76px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 22px;
  overflow: hidden;
}
.doctor-avatar img { width: 100%; height: 100%; object-fit: cover; }
.doctor-avatar--a { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); }
.doctor-avatar--b { background: linear-gradient(135deg, #6BC1E8, var(--color-primary)); }
.doctor-card h3 { font-size: 1.3rem; margin-bottom: 6px; }
.doctor-creds { font-weight: 600; color: var(--color-accent); font-size: 0.92rem; margin-bottom: 4px; }
.doctor-spec { color: var(--color-text-muted); font-size: 0.88rem; margin-bottom: 16px; }
.doctor-bio { color: var(--color-text); font-size: 0.98rem; }

@media (min-width: 760px) {
  .doctors-grid { grid-template-columns: 1fr 1fr; }
  .doctor-card--offset { margin-top: 40px; }
}

/* ---------- Numbers ---------- */
.numbers { padding: 100px 0; background: var(--color-bg-tint); }
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 20px;
  text-align: center;
}
.stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--color-accent);
}
.stat-label { color: var(--color-text-muted); font-size: 0.94rem; }
.numbers-tagline {
  text-align: center;
  margin-top: 56px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--color-text);
}

@media (min-width: 760px) {
  .numbers-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- Booking steps ---------- */
.booking { padding: 110px 0; }
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 920px;
  margin: 0 auto 52px;
  position: relative;
}
.step { text-align: center; padding: 0 12px; }
.step-circle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 18px;
  box-shadow: var(--shadow-md);
}
.step h3 { font-size: 1.08rem; margin-bottom: 8px; }
.step p { color: var(--color-text-muted); font-size: 0.94rem; }
.booking-cta { text-align: center; }

@media (min-width: 760px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
  .steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: calc(16.5% + 10px);
    right: calc(16.5% + 10px);
    height: 2px;
    background: var(--color-border);
    z-index: 0;
  }
  .step-circle { position: relative; z-index: 1; }
}

/* ---------- Final CTA ---------- */
.final-cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  padding: 110px 0;
}
.final-cta-inner { text-align: center; max-width: 640px; margin: 0 auto; }
.final-cta h2 { color: #fff; font-size: clamp(1.9rem, 4vw, 2.6rem); margin-bottom: 16px; }
.final-cta p { color: rgba(255, 255, 255, 0.9); font-size: 1.08rem; margin-bottom: 34px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-text); color: rgba(255, 255, 255, 0.85); padding: 70px 0 0; }
.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-brand .logo { color: #fff; margin-bottom: 14px; }
.footer-brand .logo-icon { color: var(--color-primary); }
.footer-tagline { color: rgba(255, 255, 255, 0.6); margin-bottom: 22px; font-size: 0.96rem; }
.footer-social { display: flex; gap: 14px; }
.footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), transform var(--transition);
}
.footer-social a:hover { background: var(--color-primary); transform: translateY(-3px); }
.footer-social svg { width: 18px; height: 18px; color: #fff; }

.footer-inner h3 {
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 20px;
}

.footer-links ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { font-size: 0.95rem; color: rgba(255, 255, 255, 0.8); transition: color var(--transition); }
.footer-links a:hover { color: #fff; }

.footer-info p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
}
.footer-info svg { width: 17px; height: 17px; margin-top: 3px; color: var(--color-primary); flex-shrink: 0; }
.footer-info a:hover { color: #fff; text-decoration: underline; }

.footer-bottom { padding: 22px 0; text-align: center; font-size: 0.85rem; color: rgba(255, 255, 255, 0.5); }

@media (min-width: 760px) {
  .footer-inner { grid-template-columns: 1.3fr 0.8fr 1fr; }
}

/* ---------- WhatsApp floating button ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 26px;
  right: 26px;
  width: 60px; height: 60px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.45);
  z-index: 300;
  transition: transform var(--transition);
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; color: #fff; }
.whatsapp-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--color-whatsapp);
  animation: wa-pulse 2.2s ease-out infinite;
}
@keyframes wa-pulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.8); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .whatsapp-ring { animation: none; }
}

/* ---------- Responsive: tablet+ ---------- */
@media (min-width: 760px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .ba-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1000px) {
  .main-nav { display: block; }
  .header-actions .hamburger { display: none; }
  .mobile-menu { display: none; }
  .btn-nav-cta { display: inline-flex; }

  .hero-inner { grid-template-columns: 1.05fr 0.95fr; min-height: 80vh; }
  .services-grid { grid-template-columns: repeat(4, 1fr); }
  .ba-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 999px) {
  .main-nav { display: none; }
}