/* ===== DYNAMIC THEME SYSTEM ===== */
    :root {
      --warm-white: #F8F5EF;
      --deep-teal: #173B3F;
      --primary-teal: #2F7D73;
      --warm-coral: #D88A5A;
      --soft-beige: #E8DCCB;
      --warm-gray: #6B5E53;
      --card-white: #FFFFFF;
      --bg-primary: var(--warm-white);
      --bg-secondary: #EFEAE1;
      --bg-card: var(--card-white);
      --text-primary: var(--deep-teal);
      --text-body: var(--warm-gray);
      --text-muted: rgba(107,94,83,0.7);
      --border-color: var(--soft-beige);
      --shadow-color: rgba(23,59,63,0.1);
      --hero-overlay-start: rgba(23,59,63,0.78);
      --hero-overlay-mid: rgba(23,59,63,0.55);
      --hero-overlay-end: rgba(47,125,115,0.35);
      --header-solid-bg: rgba(248,245,239,0.95);
      --modal-overlay-bg: rgba(23,59,63,0.4);
      --search-overlay-bg: rgba(248,245,239,0.97);
      --footer-bg: var(--deep-teal);
      --footer-text: rgba(255,255,255,0.6);
      --footer-text-dim: rgba(255,255,255,0.4);
      --mobile-cta-bg: rgba(248,245,239,0.98);
      --input-bg: #FFFFFF;
      --input-border: var(--soft-beige);
      --filter-active-bg: var(--primary-teal);
      --filter-active-text: #FFFFFF;
      --step-connector-bg: var(--soft-beige);
      --chat-bg: #E5DDD5;
      --chat-user-bg: #FFFFFF;
      --chat-user-border: #e5e5e5;
      --chat-input-bg: #F0F0F0;
    }

    /* ===== DARK MODE ===== */
    [data-theme="dark"] {
      --warm-white: #1A1F1E;
      --deep-teal: #E8F4F4;
      --primary-teal: #4AADA0;
      --warm-coral: #E89B6B;
      --soft-beige: #2A3534;
      --warm-gray: #C4B8AE;
      --card-white: #242E2D;
      --bg-primary: #1A1F1E;
      --bg-secondary: rgba(42,53,52,0.6);
      --bg-card: #242E2D;
      --text-primary: #E8F4F4;
      --text-body: #C4B8AE;
      --text-muted: rgba(196,184,174,0.6);
      --border-color: #2A3534;
      --shadow-color: rgba(0,0,0,0.25);
      --hero-overlay-start: rgba(10,16,16,0.85);
      --hero-overlay-mid: rgba(10,16,16,0.65);
      --hero-overlay-end: rgba(26,40,40,0.45);
      --header-solid-bg: rgba(26,31,30,0.95);
      --modal-overlay-bg: rgba(0,0,0,0.6);
      --search-overlay-bg: rgba(26,31,30,0.98);
      --footer-bg: #0F1514;
      --footer-text: rgba(232,244,244,0.65);
      --footer-text-dim: rgba(232,244,244,0.4);
      --mobile-cta-bg: rgba(26,31,30,0.98);
      --input-bg: #1E2726;
      --input-border: #2A3534;
      --filter-active-bg: var(--primary-teal);
      --filter-active-text: #1A1F1E;
      --step-connector-bg: #2A3534;
      --chat-bg: #1E2726;
      --chat-user-bg: #242E2D;
      --chat-user-border: #2A3534;
      --chat-input-bg: #1E2726;
    }

    /* ===== PALETTE OVERRIDES =====
       Palettes are applied via JavaScript by directly setting CSS custom properties.
       This ensures instant, reliable color changes regardless of selector specificity.
       See PALETTES object in the <script> section below. */

    * { scroll-behavior: smooth; }
    html, body {
      margin: 0;
      padding: 0;
    }
    body {
      font-family: 'Inter', sans-serif;
      background-color: var(--bg-primary);
      color: var(--text-body);
      overflow-x: hidden;
      transition: background-color 0.4s ease, color 0.4s ease;
    }

    /* Grain overlay */
    .grain-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 9999;
      opacity: 0.025;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
      background-repeat: repeat;
    }

    /* Hero video */
    .hero-video-container {
      position: relative;
      width: 100%;
      height: 100vh;
      min-height: 600px;
      overflow: hidden;
    }
    .hero-video-wrapper {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      overflow: hidden;
    }
    .hero-video-container video {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .hero-scrim {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, var(--hero-overlay-start) 0%, var(--hero-overlay-mid) 40%, var(--hero-overlay-end) 100%);
      z-index: 1;
    }



    /* Header */
    .header-transparent {
      background: transparent;
      backdrop-filter: none;
    }
    .header-solid {
      background: var(--header-solid-bg);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 20px var(--shadow-color);
      transition: background-color 0.4s ease;
    }
    .header-transparent .nav-link,
    .header-transparent .logo-text,
    .header-transparent .lang-btn {
      color: #FFFFFF;
    }
    .header-solid .nav-link,
    .header-solid .logo-text,
    .header-solid .lang-btn {
      color: var(--deep-teal);
    }

    /* Hero scroll dot */
    @keyframes pulse-down {
      0%, 100% { transform: translateY(0); opacity: 0.7; }
      50% { transform: translateY(8px); opacity: 1; }
    }
    .scroll-dot {
      animation: pulse-down 2s ease-in-out infinite;
    }

    /* Service cards */
    .service-card {
      transition: transform 0.35s cubic-bezier(0.25,0.46,0.45,0.94), box-shadow 0.35s ease;
    }
    .service-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 16px 40px var(--shadow-color);
    }
    .service-card:hover .service-icon {
      transform: scale(1.03);
    }
    .service-icon {
      transition: transform 0.35s ease;
    }

    /* Section alternating background */
    .bg-section-alt { background-color: var(--bg-secondary) !important; }

    /* Dynamic theme utility classes */
    .bg-theme-primary { background-color: var(--bg-primary) !important; }
    .bg-theme-secondary { background-color: var(--bg-secondary) !important; }
    .bg-theme-card { background-color: var(--bg-card) !important; }
    .text-theme-primary { color: var(--text-primary) !important; }
    .text-theme-body { color: var(--text-body) !important; }
    .text-theme-muted { color: var(--text-muted) !important; }
    .border-theme { border-color: var(--border-color) !important; }
    .bg-footer { background-color: var(--footer-bg) !important; }
    .bg-input { background-color: var(--input-bg) !important; }
    .border-input { border-color: var(--input-border) !important; }

    /* Smooth theme transitions for all themed elements */
    .theme-transition {
      transition: background-color 0.4s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }

    /* Palette & Dark Mode Controls */
    .theme-controls {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .palette-swatch {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      border: 2px solid transparent;
      cursor: pointer;
      transition: transform 0.2s, border-color 0.2s;
    }
    .palette-swatch:hover { transform: scale(1.15); }
    .palette-swatch.active { border-color: var(--text-primary); transform: scale(1.15); }
    .palette-swatch-warm { background: linear-gradient(135deg, #F8F5EF, #2F7D73); }
    .palette-swatch-ocean { background: linear-gradient(135deg, #F5F9FA, #3B8EA5); }
    .palette-swatch-forest { background: linear-gradient(135deg, #FAF9F3, #4A8B5C); }
    .palette-swatch-coral { background: linear-gradient(135deg, #FFF8F3, #C4694D); }

    .dark-toggle {
      width: 40px;
      height: 22px;
      border-radius: 11px;
      background: var(--soft-beige);
      position: relative;
      cursor: pointer;
      transition: background-color 0.3s;
      border: none;
      padding: 0;
    }
    .dark-toggle::after {
      content: '';
      position: absolute;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: white;
      top: 2px;
      left: 2px;
      transition: transform 0.3s, background-color 0.3s;
      box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    }
    [data-theme="dark"] .dark-toggle { background: var(--primary-teal); }
    [data-theme="dark"] .dark-toggle::after {
      transform: translateX(18px);
      background: var(--deep-teal);
    }
    .dark-toggle .toggle-icon {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      font-size: 10px;
      transition: opacity 0.3s;
    }
    .dark-toggle .icon-sun { left: 5px; opacity: 1; color: var(--warm-gray); }
    .dark-toggle .icon-moon { right: 5px; opacity: 0; color: white; }
    [data-theme="dark"] .dark-toggle .icon-sun { opacity: 0; }
    [data-theme="dark"] .dark-toggle .icon-moon { opacity: 1; }

    /* Palette dropdown (mobile friendly) */
    .palette-dropdown {
      position: absolute;
      top: calc(100% + 8px);
      right: 0;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 8px;
      box-shadow: 0 8px 24px var(--shadow-color);
      opacity: 0;
      visibility: hidden;
      transform: translateY(-4px);
      transition: all 0.25s ease;
      z-index: 100;
      min-width: 140px;
    }
    .palette-dropdown.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .palette-option {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 8px 10px;
      border-radius: 8px;
      cursor: pointer;
      font-size: 13px;
      color: var(--text-body);
      transition: background 0.15s;
      white-space: nowrap;
    }
    .palette-option:hover { background: var(--bg-secondary); }
    .palette-option .swatch { width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0; }

    /* Care badges */
    .care-badge-general { background-color: var(--primary-teal); }
    .care-badge-pediatric { background-color: #E8B94B; }
    .care-badge-women { background-color: var(--warm-coral); }
    .care-badge-derma { background-color: #D4C4A8; }
    .care-badge-checkup { background-color: var(--deep-teal); }
    .care-badge-online { background-color: #C4785A; }

    /* Doctor cards */
    .doctor-card {
      transition: transform 0.35s ease, box-shadow 0.35s ease;
    }
    .doctor-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 48px var(--shadow-color);
    }
    .doctor-card img {
      transition: transform 0.5s ease;
    }
    .doctor-card:hover img {
      transform: scale(1.03);
    }

    /* CTA hover */
    .cta-primary {
      transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    }
    .cta-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 28px rgba(216,138,90,0.35);
      filter: brightness(1.08);
    }

    /* Language switch */
    .lang-content {
      transition: opacity 0.3s ease;
    }

    /* Modal */
    .modal-overlay {
      backdrop-filter: blur(8px);
      background: var(--modal-overlay-bg);
    }
    .modal-drawer {
      transform: translateX(100%);
      transition: transform 0.4s cubic-bezier(0.25,0.46,0.45,0.94);
    }
    .modal-drawer.open {
      transform: translateX(0);
    }

    /* FAQ accordion */
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease, opacity 0.3s ease;
      opacity: 0;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      opacity: 1;
    }
    .faq-item.active .faq-chevron {
      transform: rotate(180deg);
    }
    .faq-chevron {
      transition: transform 0.3s ease;
    }

    /* Floating WhatsApp */
    @keyframes whatsapp-pulse {
      0%, 100% { box-shadow: 0 4px 16px rgba(37,211,102,0.3); }
      50% { box-shadow: 0 4px 28px rgba(37,211,102,0.5); }
    }
    .whatsapp-float {
      animation: whatsapp-pulse 3s ease-in-out infinite;
    }

    /* Mobile bottom CTA */
    @media (max-width: 767px) {
      .mobile-bottom-cta {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 50;
        background: var(--mobile-cta-bg);
        backdrop-filter: blur(12px);
        border-top: 1px solid var(--border-color);
        padding: 12px 16px;
        padding-bottom: calc(12px + env(safe-area-inset-bottom));
      }
    }

    /* Search overlay */
    .search-overlay {
      backdrop-filter: blur(12px);
      background: var(--search-overlay-bg);
    }

    /* Stepper connector */
    .step-connector {
      position: absolute;
      top: 24px;
      left: 50%;
      right: -50%;
      height: 2px;
      background: var(--soft-beige);
      z-index: 0;
    }
    @media (max-width: 767px) {
      .step-connector {
        top: 50%;
        left: 24px;
        right: auto;
        width: 2px;
        height: calc(100% - 24px);
      }
    }

    /* Easter egg */
    .easter-egg {
      opacity: 0;
      transition: opacity 1.5s ease;
      pointer-events: none;
    }
    .easter-egg.show {
      opacity: 1;
    }
    @keyframes heartbeat {
      0%, 100% { d: path('M0,50 Q25,30 50,50 T100,50'); }
      25% { d: path('M0,50 Q25,20 50,50 T100,50'); }
      50% { d: path('M0,50 Q25,35 50,50 T100,50'); }
      75% { d: path('M0,50 Q25,25 50,50 T100,50'); }
    }
    .heartbeat-line {
      animation: heartbeat 2s ease-in-out infinite;
    }
    @keyframes float-up {
      0% { transform: translateY(0) scale(1); opacity: 0.6; }
      100% { transform: translateY(-80px) scale(0.5); opacity: 0; }
    }

    /* Package cards */
    .package-card {
      transition: transform 0.35s ease, box-shadow 0.35s ease;
    }
    .package-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 48px var(--shadow-color);
    }
    .package-recommended {
      border: 2px solid var(--primary-teal);
      position: relative;
    }

    /* Category filter buttons */
    .filter-btn {
      transition: all 0.25s ease;
    }
    .filter-btn.active {
      background: var(--primary-teal);
      color: white;
    }

    /* Testimonial card */
    .testimonial-card {
      transition: transform 0.35s ease, box-shadow 0.35s ease;
    }
    .testimonial-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 16px 40px var(--shadow-color);
    }

    /* Article card */
    .article-card {
      transition: transform 0.35s ease, box-shadow 0.35s ease;
    }
    .article-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 16px 40px var(--shadow-color);
    }
    .article-card:hover .article-img {
      transform: scale(1.05);
    }
    .article-img {
      transition: transform 0.5s ease;
    }

    /* Chat mockup bubbles */
    .chat-bubble {
      border-radius: 16px;
      padding: 10px 14px;
      font-size: 0.85rem;
      max-width: 220px;
    }
    .chat-bubble-agent {
      background: #DCF8C6;
      color: #1a1a1a;
      border-bottom-left-radius: 4px;
    }
    .chat-bubble-user {
      background: var(--chat-user-bg);
      color: var(--text-body);
      border: 1px solid var(--chat-user-border);
      border-bottom-right-radius: 4px;
    }

    /* ===== DARK MODE / PALETTE OVERRIDES FOR TAILWIND CLASSES ===== */
    /* These ensure Tailwind utility classes respond to theme changes */
    [data-theme="dark"] .bg-warm-white,
    [data-theme="dark"].bg-warm-white { background-color: var(--bg-primary) !important; }
    [data-theme="dark"] .bg-soft-beige\/30,
    [data-theme="dark"].bg-soft-beige\/30 { background-color: var(--bg-secondary) !important; }
    [data-theme="dark"] .bg-card-white,
    [data-theme="dark"].bg-card-white { background-color: var(--bg-card) !important; }
    [data-theme="dark"] .text-deep-teal,
    [data-theme="dark"].text-deep-teal { color: var(--text-primary) !important; }
    [data-theme="dark"] .text-warm-gray,
    [data-theme="dark"].text-warm-gray { color: var(--text-body) !important; }
    [data-theme="dark"] .text-primary-teal,
    [data-theme="dark"].text-primary-teal { color: var(--primary-teal) !important; }
    [data-theme="dark"] .border-soft-beige,
    [data-theme="dark"].border-soft-beige { border-color: var(--border-color) !important; }
    [data-theme="dark"] .border-soft-beige\/60,
    [data-theme="dark"].border-soft-beige\/60 { border-color: var(--border-color) !important; }
    [data-theme="dark"] .bg-primary-teal\/10,
    [data-theme="dark"].bg-primary-teal\/10 { background-color: color-mix(in srgb, var(--primary-teal) 10%, transparent) !important; }
    [data-theme="dark"] .bg-warm-coral\/10,
    [data-theme="dark"].bg-warm-coral\/10 { background-color: color-mix(in srgb, var(--warm-coral) 10%, transparent) !important; }
    [data-theme="dark"] .bg-deep-teal\/10,
    [data-theme="dark"].bg-deep-teal\/10 { background-color: color-mix(in srgb, var(--deep-teal) 10%, transparent) !important; }
    [data-theme="dark"] .bg-warm-coral\/20,
    [data-theme="dark"].bg-warm-coral\/20 { background-color: color-mix(in srgb, var(--warm-coral) 20%, transparent) !important; }
    [data-theme="dark"] .bg-deep-teal\/20,
    [data-theme="dark"].bg-deep-teal\/20 { background-color: color-mix(in srgb, var(--deep-teal) 20%, transparent) !important; }

    /* Package recommended border */
    [data-theme="dark"] .package-recommended { border-color: var(--primary-teal) !important; }
    /* Modal drawer */
    [data-theme="dark"] .modal-drawer { background-color: var(--bg-primary) !important; }
    /* Search overlay */
    [data-theme="dark"] .search-overlay { background-color: var(--search-overlay-bg) !important; }
    /* Grain overlay darker */
    [data-theme="dark"] .grain-overlay { opacity: 0.04; }

    /* General transitions for smooth theme switching */
    section, header, footer, .bg-warm-white, .bg-soft-beige\/30, .bg-card-white,
    .text-deep-teal, .text-warm-gray, .border-soft-beige, .border-soft-beige\/60,
    .modal-drawer, .search-overlay {
      transition: background-color 0.4s ease, color 0.3s ease, border-color 0.3s ease;
    }