/* ==========================================================================
   128 Harley Street Dental Clinic - Modern Design System & Stylesheet
   Established 1946 | Marylebone, London
   Standards: WCAG AA/AAA Compliant, Mobile-First, Zero Layout Shifts (CLS)
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
  /* Brand Color Palette */
  --color-primary: #152636;
  --color-primary-dark: #0e1924;
  --color-primary-light: #203950;
  --color-primary-soft: #2d4c6a;
  
  --color-accent-gold: #c2aa8e;
  --color-accent-gold-hover: #ad9477;
  --color-accent-gold-dark: #92795c;
  --color-accent-gold-light: #f7f3ed;
  --color-accent-gold-subtle: rgba(194, 170, 142, 0.15);
  --color-accent-gold-border: rgba(194, 170, 142, 0.35);

  --color-bg-page: #faf8f5;
  --color-bg-surface: #ffffff;
  --color-bg-subtle: #f3efe8;
  --color-bg-contrast: #152636;

  --color-text-main: #18222d;
  --color-text-muted: #4a5766;
  --color-text-light: #f7f9fa;
  --color-text-gold: #8f7454;

  --color-border: #e4dfd6;
  --color-border-subtle: #ece8e1;
  --color-border-focus: #c2aa8e;

  --color-success: #1b633a;
  --color-success-bg: #eaf6ee;
  --color-error: #a82323;
  --color-error-bg: #fbeeed;

  /* Typography */
  --font-serif: 'Cormorant Garamond', Garamond, Georgia, serif;
  --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Elevation & Shadows */
  --shadow-xs: 0 1px 3px rgba(14, 25, 36, 0.04);
  --shadow-sm: 0 3px 10px rgba(14, 25, 36, 0.06);
  --shadow-md: 0 8px 24px rgba(14, 25, 36, 0.08);
  --shadow-lg: 0 16px 40px rgba(14, 25, 36, 0.12);
  --shadow-xl: 0 24px 60px rgba(14, 25, 36, 0.16);

  /* Border Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s ease-in-out;
  --transition-normal: 0.28s ease-in-out;
  --transition-slow: 0.45s ease-in-out;

  /* Spacing Tokens */
  --space-xxs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  /* Container Max Width */
  --container-max-width: 1240px;
}

/* --- Global Reset & Box Sizing --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip; /* Strictly avoid overflow-x: hidden on html/body as mandated for sticky header */
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-main);
  background-color: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip; /* Avoid overflow-x: hidden to preserve sticky header */
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Ensure no elements overflow horizontally */
img,
svg,
video,
canvas,
picture {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

p, li, dd {
  overflow-wrap: break-word;
  word-break: normal;
}

ul, ol {
  list-style: none;
}

/* Accessibility: Focus States */
:focus-visible {
  outline: 3px solid var(--color-accent-gold);
  outline-offset: 3px;
}

/* Skip to Content for screen reader & keyboard navigation */
.skip-link {
  position: absolute;
  top: -100px;
  inset-inline-start: 1rem;
  background: var(--color-primary);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  z-index: 99999;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-primary-dark);
  text-wrap: balance;
  margin-block-end: 0.75rem;
}

h1 {
  font-size: clamp(2rem, 5vw + 0.5rem, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw + 0.25rem, 2.6rem);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h3 {
  font-size: clamp(1.3rem, 2vw + 0.2rem, 1.85rem);
  line-height: 1.3;
}

h4 {
  font-size: clamp(1.15rem, 1.5vw + 0.1rem, 1.45rem);
}

p {
  margin-block-end: 1rem;
}

p:last-child {
  margin-block-end: 0;
}

.lead-text {
  font-size: clamp(1.05rem, 1.2vw + 0.5rem, 1.25rem);
  line-height: 1.7;
  color: var(--color-text-muted);
}

.text-gold {
  color: var(--color-text-gold);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-gold);
  margin-block-end: 0.75rem;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background-color: var(--color-accent-gold);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 480px) {
  .container {
    padding-inline: 1.25rem;
  }
}

@media (min-width: 768px) {
  .container {
    padding-inline: 2rem;
  }
}

@media (min-width: 1200px) {
  .container {
    padding-inline: 2.5rem;
  }
}

.section {
  padding-block: clamp(3rem, 6vw, 5.5rem);
  position: relative;
}

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

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

.section-dark {
  background-color: var(--color-primary);
  color: var(--color-text-light);
}

.section-dark h1,
.section-dark h2,
.section-dark h3 {
  color: #ffffff;
}

.section-dark .lead-text {
  color: rgba(255, 255, 255, 0.85);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin-inline: auto;
  margin-block-end: clamp(2rem, 4vw, 3.5rem);
}

.section-header.text-start {
  text-align: start;
  margin-inline: 0;
}

/* --- Top Utility Bar --- */
.top-bar {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.84rem;
  border-block-end: 1px solid rgba(194, 170, 142, 0.2);
  padding-block: 0.45rem;
}

.top-bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.top-bar-item a {
  color: rgba(255, 255, 255, 0.9);
  transition: color var(--transition-fast);
}

.top-bar-item a:hover {
  color: var(--color-accent-gold);
}

.top-bar-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--color-accent-gold);
  font-weight: 600;
  letter-spacing: 0.03em;
}

@media (max-width: 767px) {
  .top-bar-contact-hide-mobile {
    display: none;
  }
  .top-bar-inner {
    justify-content: center;
  }
}

/* --- Sticky Header & Navigation --- */
/* Strictly direct child of body, pinned at every scroll position */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal);
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(14, 25, 36, 0.08);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: clamp(68px, 9vw, 84px);
  gap: 1rem;
}

/* Logo Styling */
.header-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
  min-height: 48px;
}

.logo-image {
  height: clamp(40px, 5.5vw, 54px);
  width: auto;
  aspect-ratio: 444 / 240;
  object-fit: contain;
}

.logo-fallback-text {
  display: none;
}

@media (min-width: 768px) {
  .logo-fallback-text {
    display: flex;
    flex-direction: column;
  }
}

.logo-fallback-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-primary-dark);
  line-height: 1.1;
  text-transform: uppercase;
}

.logo-fallback-sub {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-gold);
  font-weight: 600;
}

/* Primary Navigation Desktop */
.nav-menu {
  display: none;
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 2vw, 2.2rem);
  }

  .nav-link {
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--color-text-main);
    padding-block: 0.6rem;
    position: relative;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    transition: color var(--transition-fast);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 8px;
    inset-inline-start: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-gold);
    transition: width var(--transition-normal);
  }

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

  .nav-link:hover::after,
  .nav-link.active::after {
    width: 100%;
  }

  .nav-link.active {
    color: var(--color-primary-dark);
    font-weight: 700;
  }
}

/* Header CTAs & Hamburger Toggle */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.btn-text-mobile {
  display: none;
}

@media (max-width: 500px) {
  .btn-text-desktop {
    display: none;
  }
  .btn-text-mobile {
    display: inline;
  }
  .header-actions {
    gap: 0.4rem;
  }
  .header-actions .btn-sm {
    padding: 0.45rem 0.85rem;
    font-size: 0.82rem;
    min-height: 44px;
  }
}

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

@media (min-width: 820px) {
  .header-phone-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--color-primary);
    padding: 0.5rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    min-height: 48px;
  }
  .header-phone-cta:hover {
    border-color: var(--color-accent-gold);
    color: var(--color-text-gold);
  }
}

/* Hamburger Button */
.hamburger-btn {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 10px;
  z-index: 1002;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.hamburger-btn:hover {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-accent-gold);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary-dark);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .hamburger-btn {
    display: none;
  }
}

/* Mobile Drawer Navigation */
.mobile-drawer {
  position: fixed;
  top: 0;
  inset-inline-end: -100%;
  width: min(85vw, 380px);
  height: 100vh;
  background-color: var(--color-bg-surface);
  box-shadow: -8px 0 30px rgba(14, 25, 36, 0.2);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  padding: 5rem 1.75rem 2rem;
  transition: inset-inline-end var(--transition-normal);
  overflow-y: auto;
}

.mobile-drawer.is-open {
  inset-inline-end: 0;
}

.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(14, 25, 36, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-block-end: 2rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  min-height: 48px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.mobile-drawer-footer {
  margin-top: auto;
  border-block-start: 1px solid var(--color-border);
  padding-block-start: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-contact-card {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --- Buttons & Interactive Elements --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.82rem 1.6rem;
  min-height: 48px;
  border-radius: var(--radius-full);
  cursor: pointer;
  text-align: center;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 14px rgba(21, 38, 54, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(21, 38, 54, 0.28);
  color: #ffffff;
}

.btn-gold {
  background-color: var(--color-accent-gold);
  color: #121e28;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(194, 170, 142, 0.3);
}

.btn-gold:hover {
  background-color: var(--color-accent-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(194, 170, 142, 0.4);
  color: #121e28;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline-gold {
  background-color: transparent;
  color: var(--color-accent-gold-dark);
  border: 1.5px solid var(--color-accent-gold);
}

.btn-outline-gold:hover {
  background-color: var(--color-accent-gold);
  color: #121e28;
  transform: translateY(-2px);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.8);
}

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

.btn-sm {
  padding: 0.5rem 1.15rem;
  font-size: 0.84rem;
  min-height: 42px;
}

.btn-lg {
  padding: 1rem 2.2rem;
  font-size: 1.05rem;
  min-height: 54px;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  background-color: var(--color-primary);
  color: #ffffff;
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(194, 170, 142, 0.15) 0%, transparent 60%),
              linear-gradient(135deg, rgba(14, 25, 36, 0.95) 0%, rgba(21, 38, 54, 0.92) 100%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }
}

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

.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(194, 170, 142, 0.15);
  border: 1px solid rgba(194, 170, 142, 0.4);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
  margin-block-end: 1.5rem;
}

.hero-title {
  color: #ffffff;
  margin-block-end: 1.25rem;
}

.hero-lead {
  font-size: clamp(1.05rem, 1.3vw, 1.25rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  margin-block-end: 2rem;
  max-width: 600px;
}

.hero-features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-block-end: 2.25rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero-feature-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-feature-icon {
  color: var(--color-accent-gold);
  flex-shrink: 0;
}

.hero-media-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(194, 170, 142, 0.3);
}

.hero-image {
  width: 100%;
  aspect-ratio: 1000 / 400;
  object-fit: cover;
  display: block;
  transform: scale(1.01);
  transition: transform var(--transition-slow);
}

.hero-media-card {
  position: absolute;
  bottom: 1.25rem;
  inset-inline-start: 1.25rem;
  inset-inline-end: 1.25rem;
  background: rgba(14, 25, 36, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(194, 170, 142, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.hero-card-text {
  font-size: 0.85rem;
  color: #ffffff;
}

.hero-card-title {
  font-weight: 700;
  color: var(--color-accent-gold);
  font-size: 0.95rem;
}

/* --- Trust / Proof Bar --- */
.trust-bar {
  background-color: var(--color-bg-surface);
  border-block-end: 1px solid var(--color-border);
  padding-block: 2.25rem;
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.5rem;
}

.trust-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-accent-gold-light);
  color: var(--color-accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.trust-content h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  margin-block-end: 0.25rem;
  color: var(--color-primary-dark);
}

.trust-content p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* --- Core Services Grid --- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

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

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

.service-card {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-gold);
}

.service-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background-color: var(--color-bg-subtle);
}

.service-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.service-card:hover .service-card-image {
  transform: scale(1.05);
}

.service-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-card-tag {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-gold);
  margin-block-end: 0.5rem;
}

.service-card-title {
  font-size: 1.5rem;
  margin-block-end: 0.85rem;
}

.service-card-desc {
  font-size: 0.94rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-block-end: 1.25rem;
  flex-grow: 1;
}

.service-card-features {
  margin-block-end: 1.5rem;
  border-block-start: 1px solid var(--color-border-subtle);
  padding-block-start: 1rem;
}

.service-card-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--color-text-main);
  margin-block-end: 0.4rem;
}

.service-card-features li svg {
  color: var(--color-accent-gold-dark);
  flex-shrink: 0;
}

.service-card-footer {
  margin-top: auto;
}

/* --- Doctor Spotlight Section --- */
.doctor-spotlight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 992px) {
  .doctor-spotlight-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4rem;
  }
}

.doctor-media-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.doctor-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.doctor-experience-badge {
  position: absolute;
  bottom: 1.5rem;
  inset-inline-end: 1.5rem;
  background-color: var(--color-primary);
  color: #ffffff;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-accent-gold);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.doctor-experience-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent-gold);
}

.doctor-experience-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.doctor-credentials-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-block: 1rem 1.75rem;
}

.credential-tag {
  background-color: var(--color-accent-gold-light);
  border: 1px solid var(--color-accent-gold-border);
  color: var(--color-primary-dark);
  font-size: 0.84rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
}

/* --- New Patient Offer Banner --- */
.offer-banner {
  background: linear-gradient(135deg, #152636 0%, #1e364d 100%);
  border-radius: var(--radius-xl);
  color: #ffffff;
  padding: clamp(2rem, 5vw, 4rem);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(194, 170, 142, 0.4);
  box-shadow: var(--shadow-xl);
  margin-block: 2rem;
}

.offer-banner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 900px) {
  .offer-banner-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.offer-content h2 {
  color: #ffffff;
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-block-end: 1rem;
}

.offer-price-box {
  background-color: rgba(255, 255, 255, 0.06);
  border: 1.5px solid var(--color-accent-gold);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(8px);
}

.offer-price-currency {
  font-size: 1.75rem;
  font-family: var(--font-serif);
  color: var(--color-accent-gold);
}

.offer-price-amount {
  font-size: clamp(3.5rem, 6vw, 4.5rem);
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
}

.offer-price-note {
  display: block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  margin-block-start: 0.5rem;
}

/* --- Whitening Comparison Matrix Table --- */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-block: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  background-color: var(--color-bg-surface);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: start;
  font-size: 0.92rem;
  min-width: 680px;
}

.comparison-table th,
.comparison-table td {
  padding: 1.15rem 1.4rem;
  border-block-end: 1px solid var(--color-border-subtle);
  vertical-align: middle;
}

.comparison-table th {
  background-color: var(--color-primary);
  color: #ffffff;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.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(--color-accent-gold-light);
}

.comparison-badge-img {
  max-height: 48px;
  width: auto;
  aspect-ratio: 25 / 14;
  object-fit: contain;
  margin-block-end: 0.5rem;
}

.price-pill {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

/* --- Fee Schedule Data Cards & Tables --- */
.fee-category-box {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-sm);
  margin-block-end: 2.5rem;
}

.fee-category-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-block-end: 2px solid var(--color-accent-gold);
  padding-block-end: 0.75rem;
  margin-block-end: 1.5rem;
}

.fee-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.fee-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background-color: var(--color-bg-page);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  transition: background-color var(--transition-fast);
}

.fee-row:hover {
  background-color: var(--color-accent-gold-light);
}

.fee-treatment {
  font-weight: 600;
  color: var(--color-primary-dark);
}

.fee-treatment-desc {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.fee-amount {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

/* --- Clinic Gallery / Heritage Visuals --- */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

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

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

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
  background-color: var(--color-bg-subtle);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  inset-inline: 0;
  padding: 1.5rem 1rem 0.85rem;
  background: linear-gradient(to top, rgba(14, 25, 36, 0.92) 0%, transparent 100%);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  transform: translateY(0);
  transition: transform var(--transition-normal);
}

/* --- Testimonials & Reviews --- */
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

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

@media (min-width: 1100px) {
  .reviews-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.review-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
}

.review-stars {
  color: #e5a93c;
  display: flex;
  gap: 0.2rem;
  margin-block-end: 1rem;
}

.review-quote {
  font-size: 0.95rem;
  color: var(--color-text-main);
  line-height: 1.65;
  font-style: italic;
  margin-block-end: 1.5rem;
  flex-grow: 1;
}

.review-author-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-block-start: 1px solid var(--color-border-subtle);
  padding-block-start: 1rem;
}

.review-author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-accent-gold-light);
  color: var(--color-primary-dark);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.review-author-name {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 0.95rem;
}

.review-author-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

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

.faq-item {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.is-open {
  border-color: var(--color-accent-gold);
}

.faq-trigger {
  width: 100%;
  text-align: start;
  background: none;
  border: none;
  padding: 1.25rem 1.5rem;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  transition: color var(--transition-fast);
}

.faq-trigger:hover {
  color: var(--color-text-gold);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
  background-color: var(--color-accent-gold-light);
  color: var(--color-accent-gold-dark);
}

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

.faq-panel-content {
  padding: 0 1.5rem 1.35rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Contact & Booking Components --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.15fr;
    gap: 3.5rem;
  }
}

.contact-card-info {
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 4vw, 3rem);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(194, 170, 142, 0.3);
}

.contact-card-info h3,
.contact-card-info h4 {
  color: #ffffff;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-block: 2rem;
}

.contact-detail-row {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(194, 170, 142, 0.2);
  color: var(--color-accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-detail-text h4 {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  margin-block-end: 0.2rem;
  color: var(--color-accent-gold);
}

.contact-detail-text p,
.contact-detail-text a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.88);
}

.contact-detail-text a:hover {
  color: var(--color-accent-gold);
  text-decoration: underline;
}

/* Form Controls */
.form-box {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 3rem);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-block-end: 1.25rem;
}

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

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

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-block-end: 0.4rem;
}

.form-label .required {
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.82rem 1.1rem;
  font-size: 0.95rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--color-text-main);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 48px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 0 4px var(--color-accent-gold-subtle);
  outline: none;
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-block-start: 0.35rem;
}

.form-status {
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-block-end: 1.25rem;
  display: none;
  font-size: 0.9rem;
}

.form-status.success {
  display: block;
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form-status.error {
  display: block;
  background-color: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* --- Booking Modal --- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(14, 25, 36, 0.7);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-xl);
  width: min(100%, 640px);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-accent-gold);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
  padding: clamp(1.75rem, 4vw, 2.5rem);
  position: relative;
}

.modal-backdrop.is-open .modal-container {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  inset-inline-end: 1.25rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--color-border);
}

/* --- Multi-Column Footer --- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.85);
  border-block-start: 1px solid rgba(194, 170, 142, 0.25);
  margin-top: auto;
}

.footer-top {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 3rem;
  }
}

.footer-col h4 {
  font-family: var(--font-serif);
  color: #ffffff;
  font-size: 1.25rem;
  margin-block-end: 1.25rem;
  position: relative;
  padding-block-end: 0.5rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  inset-inline-start: 0;
  width: 32px;
  height: 2px;
  background-color: var(--color-accent-gold);
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.75);
  margin-block-end: 1.25rem;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  transition: color var(--transition-fast), padding var(--transition-fast);
  display: inline-flex;
  align-items: center;
  min-height: 36px;
}

.footer-link:hover {
  color: var(--color-accent-gold);
  padding-inline-start: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.8);
  margin-block-end: 1rem;
}

.footer-contact-item svg {
  color: var(--color-accent-gold);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-hours-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(194, 170, 142, 0.2);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.85rem;
  margin-block-start: 1rem;
}

.footer-hours-row {
  display: flex;
  justify-content: space-between;
  margin-block-end: 0.35rem;
}

.footer-hours-row:last-child {
  margin-block-end: 0;
}

/* Footer Bottom Bar */
.footer-bottom {
  border-block-start: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: 1.5rem;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.65);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

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

.footer-legal-link {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
}

.footer-legal-link:hover {
  color: var(--color-accent-gold);
}

/* --- Back to Top Button --- */
/* Fixed to bottom-right corner, >= 48px, translated aria-label, smoothly scrolls */
.back-to-top {
  position: fixed;
  bottom: 1.75rem;
  inset-inline-end: 1.75rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: var(--color-accent-gold);
  border: 1.5px solid var(--color-accent-gold);
  box-shadow: 0 4px 16px rgba(14, 25, 36, 0.25);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), background-color var(--transition-fast);
}

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

.back-to-top:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(14, 25, 36, 0.35);
}

/* --- Policy Modal Styling (Complaints, Terms, Privacy, Cookies) --- */
.policy-card {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-sm);
  margin-block-end: 2rem;
}

.policy-card h3 {
  border-block-end: 1px solid var(--color-border-subtle);
  padding-block-end: 0.75rem;
  margin-block-end: 1.25rem;
}

.policy-content {
  font-size: 0.94rem;
  color: var(--color-text-main);
  line-height: 1.7;
}

.policy-content ul {
  list-style-type: disc;
  padding-inline-start: 1.5rem;
  margin-block: 1rem;
}

.policy-content li {
  margin-block-end: 0.5rem;
}

/* --- Print Styles --- */
@media print {
  .site-header,
  .top-bar,
  .back-to-top,
  .mobile-drawer,
  .btn,
  .hamburger-btn {
    display: none !important;
  }

  body {
    background: #ffffff;
    color: #000000;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }
}