/* ==========================================================================
   TopDent Poly Clinic Dubai - Production Design System & Stylesheet
   Modern, Ultra-Responsive, Mobile-First Dental Healthcare Architecture
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Palette */
  --primary: #1ab6c4;
  --primary-hover: #149ba7;
  --primary-dark: #064e54;
  --primary-darker: #043337;
  --primary-light: #e6f8fa;
  --primary-glow: rgba(26, 182, 196, 0.25);

  --accent-gold: #f59e0b;
  --accent-gold-light: #fef3c7;
  --accent-blue: #0284c7;

  /* Neutral Slate Palette (WCAG AA/AAA Compliant) */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;

  /* Semantic Aliases */
  --color-text: var(--slate-800);
  --color-text-muted: var(--slate-600);
  --color-heading: var(--slate-900);
  --color-bg: var(--white);
  --color-bg-alt: #f7fbfa;
  --color-border: var(--slate-200);

  /* Typography */
  --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Fluid Spacing */
  --space-2xs: clamp(0.25rem, 0.2rem + 0.2vw, 0.375rem);
  --space-xs: clamp(0.5rem, 0.4rem + 0.4vw, 0.75rem);
  --space-sm: clamp(0.75rem, 0.6rem + 0.6vw, 1rem);
  --space-md: clamp(1rem, 0.8rem + 0.9vw, 1.5rem);
  --space-lg: clamp(1.5rem, 1.2rem + 1.4vw, 2.25rem);
  --space-xl: clamp(2rem, 1.6rem + 2vw, 3.25rem);
  --space-2xl: clamp(3rem, 2.4rem + 2.8vw, 5rem);

  /* Elevation Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.09), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-teal: 0 10px 25px -5px rgba(26, 182, 196, 0.3);

  /* Border Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Header Height */
  --header-height: 84px;
  --topbar-height: 40px;
}

/* --------------------------------------------------------------------------
   2. Modern Reset & Base Rules
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* Do NOT set overflow: hidden or auto on html or body - keeps position: sticky working! */
body {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 0.25vw + 0.9rem, 1.05rem);
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip; /* Cleanly clips edge artifacts without breaking sticky header */
}

img, picture, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

/* Accessible focus styling */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   3. Typography & Heading Hierarchy
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 3.8vw + 1rem, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.6rem, 2.4vw + 0.8rem, 2.5rem);
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.2rem, 1.5vw + 0.6rem, 1.65rem);
  line-height: 1.3;
}

h4 {
  font-size: clamp(1.05rem, 0.8vw + 0.6rem, 1.25rem);
}

p {
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

p.lead {
  font-size: clamp(1.05rem, 0.5vw + 0.95rem, 1.25rem);
  line-height: 1.6;
  color: var(--slate-700);
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
  border: 1px solid rgba(26, 182, 196, 0.2);
}

/* --------------------------------------------------------------------------
   4. Container & Layout Wrappers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2.5rem);
  min-width: 0;
}

.container-narrow {
  width: 100%;
  max-width: 960px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
  min-width: 0;
}

.section {
  padding-block: var(--space-2xl);
  position: relative;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-dark {
  background-color: var(--primary-darker);
  color: var(--slate-100);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

.section-dark p {
  color: var(--slate-300);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   5. Buttons & Interactive Controls (Touch targets >= 48px)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  min-width: 48px;
  padding: 0.75rem 1.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(26, 182, 196, 0.35);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(26, 182, 196, 0.45);
}

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

.btn-secondary:hover {
  background-color: var(--primary-darker);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-dark);
  border-color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary-light);
  color: var(--primary-darker);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
  color: var(--white);
}

.btn-whatsapp {
  background-color: #25d366;
  color: var(--white);
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background-color: #20bd5a;
  color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  min-height: 38px;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   6. Top Notification Bar & Sticky Header
   -------------------------------------------------------------------------- */
.top-bar {
  background-color: var(--primary-darker);
  color: var(--slate-200);
  font-size: 0.825rem;
  padding-block: 0.45rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.top-bar-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.top-bar a {
  color: var(--slate-200);
}

.top-bar a:hover {
  color: var(--white);
  text-decoration: underline;
}

/* Strict Sticky Header: direct child of body, pinned at top */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.85);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.03);
  transition: all var(--transition-fast);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.site-logo img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.logo-subtitle {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate-500);
}

/* Main Navigation */
.main-nav {
  display: none;
}

@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.6rem 0.9rem;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--slate-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-dark);
  background-color: var(--primary-light);
}

.nav-link.active {
  color: var(--primary-dark);
  background-color: rgba(26, 182, 196, 0.12);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0.15rem;
  left: 0.9rem;
  right: 0.9rem;
  height: 2px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 260px;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-normal);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.8rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  background-color: var(--primary-light);
  color: var(--primary-dark);
  transform: translateX(4px);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-phone-btn {
  display: none;
}

@media (min-width: 1200px) {
  .header-phone-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary-dark);
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-full);
    background: var(--primary-light);
  }
}

/* Hamburger Toggle Button */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  background: var(--white);
  color: var(--slate-800);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.menu-toggle:hover {
  background: var(--slate-100);
  color: var(--primary-dark);
}

@media (min-width: 992px) {
  .menu-toggle {
    display: none;
  }
}

/* Mobile Navigation Drawer */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1099;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 360px);
  background: var(--white);
  z-index: 1100;
  box-shadow: var(--shadow-xl);
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 1.5rem;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--slate-200);
  margin-bottom: 1.25rem;
}

.mobile-nav-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  background: var(--slate-50);
  color: var(--slate-700);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-item {
  width: 100%;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--slate-800);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.mobile-submenu {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-inline-start: 1.25rem;
  margin-top: 0.25rem;
  margin-bottom: 0.5rem;
}

.mobile-submenu-link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.925rem;
  color: var(--slate-600);
  border-radius: var(--radius-sm);
}

.mobile-submenu-link:hover,
.mobile-submenu-link.active {
  color: var(--primary-dark);
  background: var(--slate-100);
}

.mobile-nav-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--slate-200);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   7. Hero Banner Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #f0fbfb 0%, #ffffff 50%, #eaf6f7 100%);
  padding-block: clamp(3rem, 5vw, 6rem);
  overflow: clip;
  border-bottom: 1px solid var(--slate-200);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-rating-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--white);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  margin-bottom: 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-700);
}

.hero-rating-stars {
  display: inline-flex;
  gap: 0.15rem;
  color: var(--accent-gold);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
}

.hero-trust-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding-top: var(--space-md);
  border-top: 1px solid var(--slate-200);
  width: 100%;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-700);
}

.trust-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.hero-media-wrapper {
  position: relative;
}

.hero-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(226, 232, 240, 0.8);
  background: var(--white);
}

.hero-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.hero-floating-card {
  position: absolute;
  bottom: -1.25rem;
  inset-inline-start: -1rem;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  gap: 0.85rem;
  max-width: 280px;
}

.floating-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   8. Stats & Trust Metrics Banner
   -------------------------------------------------------------------------- */
.stats-banner {
  background: var(--primary-dark);
  color: var(--white);
  padding-block: var(--space-lg);
  position: relative;
  z-index: 2;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  text-align: center;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 2.8vw, 2.8rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--slate-200);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   9. Accessible Before / After Comparison Slider Component
   -------------------------------------------------------------------------- */
.comparison-section {
  background-color: var(--color-bg-alt);
}

.case-selector {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: var(--space-lg);
}

.case-btn {
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--slate-300);
  background: var(--white);
  color: var(--slate-700);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.case-btn.active {
  background: var(--primary-dark);
  color: var(--white);
  border-color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.slider-container-box {
  max-width: 840px;
  margin-inline: auto;
  background: var(--white);
  padding: clamp(1rem, 2vw, 1.75rem);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--slate-200);
}

.comparison-slider-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-height: 580px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  user-select: none;
  touch-action: pan-y;
  background-color: var(--slate-100);
}

.comparison-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.image-before-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 50%;
  overflow: hidden;
  z-index: 2;
  border-inline-end: 2px solid var(--white);
}

.image-before-wrapper .comparison-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Will be sized to match the container width in JS or via CSS sizing */
  max-width: none;
}

.slider-badge {
  position: absolute;
  top: 1rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(15, 23, 42, 0.75);
  color: var(--white);
  backdrop-filter: blur(4px);
  z-index: 5;
  pointer-events: none;
}

.badge-before {
  left: 1rem;
}

.badge-after {
  right: 1rem;
}

/* Slider Handle & Accessible Bar */
.slider-handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background: var(--white);
  transform: translateX(-50%);
  z-index: 10;
  cursor: ew-resize;
  pointer-events: none;
}

.slider-handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 52px;
  height: 52px;
  min-width: 48px;
  min-height: 48px;
  transform: translate(-50%, -50%);
  border-radius: var(--radius-full);
  background: var(--white);
  border: 3px solid var(--primary);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: ew-resize;
  z-index: 12;
  color: var(--primary-dark);
  pointer-events: auto;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.slider-handle-button:hover,
.slider-handle-button:focus-visible {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 6px 20px rgba(26, 182, 196, 0.5);
  outline: none;
}

.case-meta {
  margin-top: 1.25rem;
  text-align: center;
}

.case-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-900);
}

.case-desc {
  font-size: 0.9rem;
  color: var(--slate-600);
}

.case-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: var(--space-xl);
}

@media (min-width: 768px) {
  .case-gallery-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.gallery-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.gallery-info {
  padding: 0.85rem;
  text-align: center;
}

.gallery-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--slate-800);
}

.gallery-category {
  font-size: 0.8rem;
  color: var(--primary-dark);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   10. Core Dental Services Cards Grid
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 2vw, 1.75rem);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(26, 182, 196, 0.4);
}

.service-icon-box {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  padding: 0.75rem;
  transition: transform var(--transition-normal);
}

.service-card:hover .service-icon-box {
  transform: scale(1.08) rotate(2deg);
}

.service-icon-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-title {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--slate-900);
}

.service-desc {
  font-size: 0.925rem;
  color: var(--slate-600);
  margin-bottom: 1.25rem;
  flex-grow: 1;
  line-height: 1.6;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--slate-100);
  font-size: 0.85rem;
  color: var(--slate-700);
}

.service-feature-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.service-feature-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.service-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.service-link:hover {
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   11. Medical Team Showcase
   -------------------------------------------------------------------------- */
.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.doctor-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.doctor-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(26, 182, 196, 0.4);
}

.doctor-img-wrap {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: linear-gradient(180deg, #f0fbfb 0%, #e1f4f5 100%);
  position: relative;
  overflow: hidden;
}

.doctor-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--transition-smooth);
}

.doctor-card:hover .doctor-img-wrap img {
  transform: scale(1.04);
}

.doctor-badge {
  position: absolute;
  top: 1rem;
  inset-inline-start: 1rem;
  background: rgba(255, 255, 255, 0.95);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.doctor-info {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.doctor-name {
  font-size: 1.25rem;
  color: var(--slate-900);
  margin-bottom: 0.2rem;
}

.doctor-role {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.6rem;
}

.doctor-bio {
  font-size: 0.9rem;
  color: var(--slate-600);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.doctor-cta {
  margin-top: auto;
  width: 100%;
}

/* --------------------------------------------------------------------------
   12. Structured Comparison Table (GEO & SEO-09)
   -------------------------------------------------------------------------- */
.comparison-table-wrapper {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--slate-200);
  background: var(--white);
  margin-top: var(--space-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: start;
  font-size: 0.925rem;
  min-width: 650px;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--slate-200);
}

.comparison-table th {
  background: var(--primary-dark);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
}

.comparison-table th:first-child {
  border-top-left-radius: var(--radius-lg);
}

.comparison-table th:last-child {
  border-top-right-radius: var(--radius-lg);
}

.comparison-table tr:hover td {
  background-color: var(--primary-light);
}

.comparison-table td.highlight-col {
  background-color: rgba(26, 182, 196, 0.06);
  font-weight: 600;
  color: var(--primary-darker);
}

.check-icon {
  color: #10b981;
  font-weight: bold;
}

.cross-icon {
  color: #ef4444;
}

/* --------------------------------------------------------------------------
   13. Interactive Consultation Form (WCAG 3.3.2 Compliant)
   -------------------------------------------------------------------------- */
.booking-section {
  position: relative;
  background: linear-gradient(135deg, #f7fbfa 0%, #edf8f8 100%);
}

.booking-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 992px) {
  .booking-grid {
    grid-template-columns: 1fr 1.2fr;
    align-items: flex-start;
  }
}

.booking-card {
  background: var(--white);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--slate-200);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .form-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--slate-800);
}

.form-label .required {
  color: #ef4444;
  margin-inline-start: 0.2rem;
}

.form-control {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--slate-300);
  background-color: var(--white);
  color: var(--slate-900);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26, 182, 196, 0.2);
}

textarea.form-control {
  min-height: 110px;
  resize: vertical;
}

.form-checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

.form-checkbox {
  width: 20px;
  height: 20px;
  min-width: 20px;
  min-height: 20px;
  margin-top: 0.2rem;
  accent-color: var(--primary);
  cursor: pointer;
}

.form-checkbox-label {
  font-size: 0.85rem;
  color: var(--slate-600);
  line-height: 1.4;
  cursor: pointer;
}

.form-alert {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  display: none;
  margin-top: 1rem;
}

.form-alert.success {
  display: block;
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.form-alert.error {
  display: block;
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

/* Honeypot field (hidden from genuine users, traps bots) */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* --------------------------------------------------------------------------
   14. FAQ Accordion (Answer Engine Optimized)
   -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 860px;
  margin-inline: auto;
}

.faq-item {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  min-height: 52px;
  text-align: start;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--slate-900);
  cursor: pointer;
  background: transparent;
  border: none;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background: var(--primary-dark);
  color: var(--white);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth);
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem 1.5rem;
  color: var(--slate-600);
  font-size: 0.95rem;
  line-height: 1.65;
  border-top: 1px solid var(--slate-100);
  padding-top: 0.85rem;
}

/* --------------------------------------------------------------------------
   15. Global Multi-Column Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--primary-darker);
  color: var(--slate-300);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-lg);
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  }
}

.footer-col h4 {
  font-family: var(--font-heading);
  color: var(--white);
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
  position: relative;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: -0.4rem;
  inset-inline-start: 0;
  width: 32px;
  height: 2px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
}

.footer-about p {
  color: var(--slate-300);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-link {
  color: var(--slate-300);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.9rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--slate-300);
}

.footer-contact-item svg {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--slate-400);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    text-align: start;
  }
}

.footer-bottom-links {
  display: flex;
  gap: 1.25rem;
}

.footer-bottom-links a:hover {
  color: var(--white);
}

/* --------------------------------------------------------------------------
   16. Floating Action Buttons & Back-to-Top (Collision-Free)
   -------------------------------------------------------------------------- */
.floating-actions-container {
  position: fixed;
  bottom: 1.5rem;
  inset-inline-start: 1.5rem;
  z-index: 990;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.floating-btn {
  width: 52px;
  height: 52px;
  min-width: 48px;
  min-height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  color: var(--white);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.floating-btn:hover {
  transform: scale(1.1);
}

.floating-btn-whatsapp {
  background-color: #25d366;
}

.floating-btn-call {
  background-color: var(--primary-dark);
}

/* Back-to-top button (Strictly class="back-to-top", bottom-right, >= 48px) */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--primary-dark);
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(26, 182, 196, 0.4);
}

/* --------------------------------------------------------------------------
   17. Page-Specific Components (About, Services, Treatments, Contact)
   -------------------------------------------------------------------------- */
/* Page Hero Banner */
.page-hero {
  background: linear-gradient(135deg, var(--primary-darker) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding-block: clamp(3rem, 5vw, 5rem);
  text-align: center;
  position: relative;
}

.page-hero h1 {
  color: var(--white);
  margin-bottom: 0.85rem;
}

.page-hero p {
  color: var(--slate-200);
  font-size: 1.15rem;
  max-width: 720px;
  margin-inline: auto;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--slate-300);
  margin-bottom: 1rem;
}

.breadcrumbs a {
  color: var(--primary);
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .values-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.value-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  text-align: center;
  transition: all var(--transition-normal);
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.value-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: 1rem;
}

/* Support Staff Grid */
.staff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .staff-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .staff-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.staff-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  text-align: center;
  transition: transform var(--transition-fast);
}

.staff-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.staff-card img {
  width: 100%;
  aspect-ratio: 1 / 1.15;
  object-fit: cover;
  background: var(--slate-100);
}

.staff-info {
  padding: 0.75rem 0.5rem;
}

.staff-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--slate-800);
}

.staff-role {
  font-size: 0.75rem;
  color: var(--primary-dark);
  font-weight: 600;
}

/* Treatment Step-by-Step Roadmap */
.steps-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .steps-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .steps-container-5 {
    grid-template-columns: repeat(5, 1fr);
  }
}

.step-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.step-title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--slate-600);
}

/* Contact Info Cards */
.contact-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .contact-info-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.contact-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--slate-200);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Interactive Map Responsive Wrapper */
.map-frame-wrapper {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--slate-200);
}

.map-frame-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}