/* ==========================================================================
   SANAYA CLINICS — MODERN HEALTHCARE DESIGN SYSTEM & STYLESHEET
   Production-Grade, Ultra-Responsive, Accessible (WCAG AA Compliant)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Brand Healthcare Color Palette */
  --color-primary: #0284c7;        /* Medical Sky Blue */
  --color-primary-dark: #0369a1;   /* Accessible Interactive Blue */
  --color-primary-deep: #0c4a6e;   /* Clinical Deep Slate Blue */
  --color-primary-light: #e0f2fe;  /* Subtle Blue Tint */
  --color-primary-subtle: #f0f9ff; /* Ultra-light surface */

  --color-accent: #0d9488;         /* Calming Clinical Teal */
  --color-accent-dark: #0f766e;    /* Deep Teal */
  --color-accent-light: #ccfbf1;   /* Soft Teal Tint */

  /* Neutral Surface & Background Colors */
  --color-bg-body: #ffffff;
  --color-surface: #ffffff;
  --color-surface-subtle: #f8fafc; /* Crisp Slate Light */
  --color-surface-alt: #f1f5f9;    /* Section Alternating Surface */
  --color-surface-dark: #0f172a;   /* Slate 900 for Hero & Footer */
  --color-surface-dark-alt: #1e293b;

  /* High-Contrast Accessible Typography */
  --color-text-main: #0f172a;      /* 15.8:1 contrast on white (WCAG AAA) */
  --color-text-muted: #334155;     /* 7.5:1 contrast on white (WCAG AAA) */
  --color-text-subtle: #475569;    /* 4.8:1 contrast on white (WCAG AA) */
  --color-text-light: #ffffff;     /* Contrast on dark navy backgrounds */
  --color-text-light-muted: #e2e8f0; /* Contrast on dark surfaces */
  --color-text-accent: #0284c7;

  /* Borders & Dividers */
  --color-border: #e2e8f0;
  --color-border-subtle: #cbd5e1;
  --color-border-dark: rgba(255, 255, 255, 0.15);

  /* Status Colors */
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-success-border: #a7f3d0;
  --color-error: #b91c1c;
  --color-error-bg: #fef2f2;
  --color-error-border: #fecaca;
  --color-warning: #d97706;

  /* Typography Scales (Fluid clamp typography) */
  --font-family-primary: "Poppins", "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  --font-family-heading: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;

  --fs-xs: 0.8125rem;
  --fs-sm: clamp(0.875rem, 0.2vw + 0.82rem, 0.95rem);
  --fs-base: clamp(1rem, 0.35vw + 0.92rem, 1.125rem);
  --fs-md: clamp(1.125rem, 0.5vw + 1rem, 1.25rem);
  --fs-lg: clamp(1.25rem, 1vw + 1rem, 1.5rem);
  --fs-xl: clamp(1.5rem, 1.8vw + 1.1rem, 2rem);
  --fs-h2: clamp(1.75rem, 2.5vw + 1.25rem, 2.5rem);
  --fs-h1: clamp(2.1rem, 4vw + 1.25rem, 3.5rem);

  /* Spacing Scale */
  --space-2xs: 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;

  /* Border Radii */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.09), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.06);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px -3px rgba(2, 132, 199, 0.35);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* Container Max Width */
  --container-max-width: 1200px;
}

/* --------------------------------------------------------------------------
   2. Font Face Declarations (Local & Fallback)
   -------------------------------------------------------------------------- */
@font-face {
  font-family: "Poppins";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./fonts/Poppins/Poppins-Regular.ttf") format("truetype");
}

@font-face {
  font-family: "Poppins";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("./fonts/Poppins/Poppins-Bold.ttf") format("truetype");
}

@font-face {
  font-family: "Lato";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./fonts/Lato/Lato-Regular.ttf") format("truetype");
}

/* --------------------------------------------------------------------------
   3. Reset & Base Layout (Strict Mobile-First, No overflow-x hidden on html/body)
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  /* DO NOT use overflow: hidden or auto here - that breaks position: sticky! Use overflow-x: clip */
  overflow-x: clip;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility: Skip Navigation Link */
.skip-link {
  position: absolute;
  top: -100px;
  inset-inline-start: 1rem;
  z-index: 10000;
  background: var(--color-primary-dark);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

/* Accessible Visually Hidden Utility */
.visually-hidden {
  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;
}

/* Media & Typography Fluid Constraints */
img, picture, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

p, h1, h2, h3, h4, h5, h6, li, blockquote {
  overflow-wrap: break-word;
  word-break: break-word;
}

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

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

/* Clear persistent focus ring for keyboard navigation */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* Container Wrapper */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

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

/* --------------------------------------------------------------------------
   4. Top Announcement Bar
   -------------------------------------------------------------------------- */
.top-bar {
  background: var(--color-primary-deep);
  color: var(--color-text-light);
  font-size: var(--fs-xs);
  padding-block: 0.5rem;
  border-bottom: 1px solid var(--color-border-dark);
}

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

.top-bar-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.top-bar-info {
  display: none;
}

@media (min-width: 768px) {
  .top-bar-info {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    color: var(--color-text-light-muted);
  }
  .top-bar-info a:hover {
    color: #ffffff;
    text-decoration: underline;
  }
}

/* --------------------------------------------------------------------------
   5. Sticky Header & Glassmorphic Navigation
   Header is a direct child of <body> with position: sticky; top: 0;
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(15, 23, 42, 0.96);
  box-shadow: var(--shadow-lg);
  border-bottom-color: rgba(2, 132, 199, 0.3);
}

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

/* Brand Logo (Home link per prompt: NO "Home" menu item!) */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: #ffffff;
  font-family: var(--font-family-heading);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding-block: 0.25rem;
  min-height: 48px;
}

.brand-emblem {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
  flex-shrink: 0;
}

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

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.08em;
  background: linear-gradient(120deg, #ffffff, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  line-height: 1;
}

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

@media (min-width: 1024px) {
  .site-nav {
    display: flex;
    align-items: center;
  }

  .nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0.25rem;
  }

  .nav-link {
    color: var(--color-text-light-muted);
    font-size: var(--fs-sm);
    font-weight: 500;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-xs);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    position: relative;
    display: inline-block;
  }

  .nav-link:hover,
  .nav-link:focus-visible,
  .nav-link.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.08);
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    inset-inline: 0.85rem;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
  }
}

/* Header Action Controls & Socials */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-socials {
  display: none;
}

@media (min-width: 640px) {
  .header-socials {
    display: flex;
    align-items: center;
    gap: 0.35rem;
  }
}

.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 50%;
  color: var(--color-text-light-muted);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.social-icon-btn:hover,
.social-icon-btn:focus-visible {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
}

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

@media (min-width: 768px) {
  .header-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
  }
}

/* Mobile Menu Toggle Button (Ergonomic Touch Target >= 48px) */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  color: #ffffff;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
}

.mobile-menu-toggle .bar {
  width: 22px;
  height: 2px;
  background-color: #ffffff;
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none;
  }
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  display: none;
  position: absolute;
  top: 100%;
  inset-inline: 0;
  background: rgba(15, 23, 42, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: var(--shadow-xl);
  padding: 1.5rem 1.25rem 2rem;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.mobile-nav-drawer.open {
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* Mobile Drawer Links (Touch Target >= 48px, NO "Home" link per prompt) */
.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-light);
  font-size: var(--fs-md);
  font-weight: 500;
  padding: 0.85rem 1rem;
  min-height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible,
.mobile-nav-link.active {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.mobile-drawer-footer {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   6. Buttons & Interactive Controls
   All buttons have touch target >= 48px x 48px
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--fs-base);
  padding: 0.75rem 1.5rem;
  min-height: 48px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
  line-height: 1.2;
}

.btn-sm {
  font-size: var(--fs-sm);
  padding: 0.6rem 1.25rem;
  min-height: 48px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(135deg, var(--color-primary-dark), #025985);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
}

.btn-accent:hover,
.btn-accent:focus-visible {
  background: linear-gradient(135deg, var(--color-accent-dark), #09534c);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-outline-light {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline-light:hover,
.btn-outline-light:focus-visible {
  background: rgba(255, 255, 255, 0.12);
  border-color: #ffffff;
  color: #ffffff;
}

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

.btn-outline-primary:hover,
.btn-outline-primary:focus-visible {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   7. Hero & Pre-Launch Announcement Section (#top, #countdown)
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: calc(100vh - 120px);
  background-color: var(--color-surface-dark);
  background-image: 
    linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(10, 37, 64, 0.88) 50%, rgba(15, 23, 42, 0.92) 100%),
    url("./images/bg01.jpg");
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  color: #ffffff;
  display: flex;
  align-items: center;
  padding-block: var(--space-3xl) var(--space-4xl);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 900px;
  margin-inline: auto;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(2, 132, 199, 0.2);
  border: 1px solid rgba(2, 132, 199, 0.45);
  color: var(--color-primary-light);
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-family: var(--font-family-heading);
  font-size: var(--fs-h1);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: #ffffff;
}

.hero-title .accent-text {
  background: linear-gradient(120deg, #38bdf8, #2dd4bf);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: underline;
  text-decoration-color: rgba(56, 189, 248, 0.4);
  text-underline-offset: 6px;
}

.hero-subtitle {
  font-size: var(--fs-md);
  color: var(--color-text-light-muted);
  max-width: 720px;
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
}

/* --------------------------------------------------------------------------
   8. Re-Engineered Fluid Countdown Component (Zero FOUC, Mobile 320px Ready)
   -------------------------------------------------------------------------- */
.countdown-wrapper {
  width: 100%;
  margin-bottom: var(--space-2xl);
}

.countdown-heading {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent-light);
  margin-bottom: 1rem;
  font-weight: 600;
}

/* Fluid responsive grid for countdown: 2x2 on mobile 320px-480px, 4 in a row on >= 640px */
.countdown-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  max-width: 320px;
  margin-inline: auto;
  width: 100%;
}

@media (min-width: 640px) {
  .countdown-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: 640px;
    gap: 16px;
  }
}

@media (min-width: 1024px) {
  .countdown-grid {
    max-width: 740px;
    gap: 20px;
  }
}

.countdown-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0.5rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  min-height: 96px;
}

@media (min-width: 480px) {
  .countdown-card {
    min-height: 110px;
    padding: 1.25rem 0.75rem;
  }
}

@media (min-width: 768px) {
  .countdown-card {
    min-height: 130px;
    padding: 1.5rem 1rem;
  }
}

.countdown-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 12px 28px rgba(2, 132, 199, 0.25);
}

.countdown-value {
  font-family: var(--font-family-heading);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
  margin-bottom: 0.35rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.countdown-label {
  font-size: clamp(0.6875rem, 1.5vw, 0.8125rem);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--color-primary-light);
}

/* --------------------------------------------------------------------------
   9. Lead Capture & VIP Subscription Form (Accessible, Secure, Zero PII Leak)
   -------------------------------------------------------------------------- */
.lead-capture-card {
  width: 100%;
  max-width: 580px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.25rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

@media (min-width: 640px) {
  .lead-capture-card {
    padding: 2rem 2.25rem;
  }
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.form-group-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

@media (min-width: 480px) {
  .form-group-row {
    flex-direction: row;
    align-items: stretch;
  }
}

.form-input-wrapper {
  position: relative;
  flex: 1;
  min-width: 0;
}

.form-input {
  width: 100%;
  height: 52px;
  min-height: 52px;
  padding: 0 1.25rem;
  background: #ffffff;
  color: var(--color-text-main);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.06);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
  color: var(--color-text-subtle);
  opacity: 1;
}

.form-input:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.35);
}

.form-input[aria-invalid="true"] {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.35);
}

.subscribe-submit-btn {
  flex-shrink: 0;
  height: 52px;
  min-height: 52px;
  min-width: 140px;
}

/* WAI-ARIA Alert Validation Feedback Container */
.form-feedback {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

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

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

/* Corrected Anti-Spam Disclaimer (Zero Typos) */
.anti-spam-disclaimer {
  font-size: var(--fs-xs);
  color: var(--color-text-light-muted);
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  text-align: center;
}

/* Hero Quick Trust Badges */
.hero-trust-badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.25rem 2rem;
  margin-top: var(--space-xl);
  font-size: var(--fs-sm);
  color: var(--color-text-light-muted);
}

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

.trust-badge-item svg,
.trust-badge-item i {
  color: #38bdf8;
}

/* --------------------------------------------------------------------------
   10. Section Styling (About, Specialties, Features, FAQ, Contact)
   -------------------------------------------------------------------------- */
.section {
  padding-block: var(--space-3xl);
  position: relative;
}

@media (min-width: 1024px) {
  .section {
    padding-block: var(--space-4xl);
  }
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-family-heading);
  font-size: var(--fs-h2);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.section-description {
  font-size: var(--fs-base);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   11. About Sanaya Section (#about)
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-2xl);
  }
}

.about-text-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.lead-paragraph {
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--color-primary-deep);
  line-height: 1.6;
}

.about-pillars {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 0.5rem;
}

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

.pillar-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
}

.pillar-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.pillar-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.pillar-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-subtle);
  line-height: 1.5;
}

/* Key Metrics Counter Grid */
.stats-card-wrapper {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stat-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.stat-value {
  font-family: var(--font-family-heading);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
}

/* --------------------------------------------------------------------------
   12. Clinical Specialties & Services (#specialties)
   -------------------------------------------------------------------------- */
.specialties-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.specialty-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.specialty-card::before {
  content: "";
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.specialty-card:hover::before {
  opacity: 1;
}

.specialty-icon-box {
  width: 52px;
  height: 52px;
  min-width: 52px;
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
}

.specialty-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.specialty-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.specialty-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.spec-badge {
  font-size: var(--fs-xs);
  background: var(--color-surface-alt);
  color: var(--color-text-subtle);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   13. Why Choose Sanaya Section (#features)
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.feature-box {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.25rem;
  text-align: start;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-base);
}

.feature-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent-light);
}

.feature-icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.feature-title {
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.6rem;
}

.feature-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* --------------------------------------------------------------------------
   14. Launch Roadmap & Milestone Timeline (#roadmap)
   -------------------------------------------------------------------------- */
.timeline-wrapper {
  max-width: 840px;
  margin-inline: auto;
  position: relative;
}

.timeline-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  position: relative;
}

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

.timeline-step {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
}

.timeline-step.completed {
  border-color: var(--color-success-border);
  background: #ffffff;
}

.timeline-step.active {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.15);
}

.step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.step-number {
  font-family: var(--font-family-heading);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.step-status {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
}

.step-status.done {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.step-status.live {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.step-status.next {
  background: var(--color-surface-alt);
  color: var(--color-text-subtle);
}

.step-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.step-desc {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   15. Frequently Asked Questions Accordion (#faq)
   -------------------------------------------------------------------------- */
.faq-container {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
  min-height: 48px;
  user-select: none;
  gap: 1rem;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  font-size: 0.85rem;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
  background: var(--color-primary);
  color: #ffffff;
}

.faq-content {
  padding: 0 1.5rem 1.5rem 1.5rem;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

/* --------------------------------------------------------------------------
   16. Contact & Inquiry Section (#contact)
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-2xl);
  }
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.contact-card-details h3 {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.contact-card-details p {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.contact-card-details a {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-block: 0.35rem;
}

.contact-card-details a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Contact Social Channel Row */
.contact-social-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Pre-Launch Consultation Inquiry Form */
.inquiry-form-card {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-md);
}

@media (min-width: 640px) {
  .inquiry-form-card {
    padding: 2.25rem 2rem;
  }
}

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

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

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-text-main);
}

.field-input,
.field-select,
.field-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  min-height: 48px;
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  color: var(--color-text-main);
  transition: all var(--transition-fast);
}

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

.field-input:focus-visible,
.field-select:focus-visible,
.field-textarea:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.25);
}

/* --------------------------------------------------------------------------
   17. Comprehensive Multi-Column Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-surface-dark);
  color: var(--color-text-light);
  padding-block: var(--space-3xl) var(--space-xl);
  border-top: 1px solid var(--color-border-dark);
  margin-top: auto;
}

.footer-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl) var(--space-xl);
}

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

@media (min-width: 1024px) {
  .footer-container {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-desc {
  font-size: var(--fs-sm);
  color: var(--color-text-light-muted);
  line-height: 1.6;
}

.footer-socials {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-col h3 {
  font-family: var(--font-family-heading);
  font-size: var(--fs-base);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.04em;
  margin-bottom: 1.25rem;
  position: relative;
  display: inline-block;
}

.footer-col h3::after {
  content: "";
  position: absolute;
  bottom: -6px;
  inset-inline-start: 0;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--color-text-light-muted);
  text-decoration: none;
  transition: color var(--transition-fast), padding-inline-start var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 44px;
  padding-block: 0.35rem;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #ffffff;
  padding-inline-start: 4px;
}

.footer-newsletter-text {
  font-size: var(--fs-sm);
  color: var(--color-text-light-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
}

/* Footer Bottom Bar */
.footer-bottom {
  margin-top: var(--space-3xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  font-size: var(--fs-xs);
  color: var(--color-text-light-muted);
}

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

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  list-style: none;
}

.footer-legal-links a {
  color: var(--color-text-light-muted);
}

.footer-legal-links a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.medical-disclaimer-text {
  max-width: 600px;
  font-size: 0.75rem;
  line-height: 1.4;
  color: #94a3b8;
}

/* --------------------------------------------------------------------------
   18. Back-To-Top Button
   class="back-to-top", bottom-right corner, touch target >= 48px
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  inset-inline-end: 24px;
  z-index: 990;
  width: 50px;
  height: 50px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 50%;
  background: var(--color-primary-dark);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), background-color var(--transition-fast);
}

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

.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(2, 132, 199, 0.45);
}

/* --------------------------------------------------------------------------
   19. Accessible Dialog Modal (Inquiry & VIP Registration)
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-dialog {
  background: #ffffff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  transform: scale(0.95);
  transition: transform var(--transition-base);
}

.modal-backdrop.active .modal-dialog {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-family: var(--font-family-heading);
  font-size: var(--fs-md);
  font-weight: 700;
  color: var(--color-text-main);
}

.modal-close-btn {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: var(--color-surface-alt);
  color: var(--color-text-main);
}

.modal-body {
  padding: 1.5rem;
}

/* --------------------------------------------------------------------------
   20. Responsive & Print Media Queries
   -------------------------------------------------------------------------- */
@media print {
  .site-header,
  .top-bar,
  .back-to-top,
  .lead-capture-card,
  .site-footer,
  .modal-backdrop {
    display: none !important;
  }
  
  body {
    background: #ffffff;
    color: #000000;
  }
}