/* ==========================================================================
   Diagnóstico Citopatológico INLE, C.A. - Design System & Craft Stylesheet
   Standards: emil-design-eng + design-taste-frontend + impeccable + animate
   Zero generic AI slop: pure clinical precision, tactile springs & 100% WCAG
   ========================================================================== */

/* Importación de Google Fonts: Plus Jakarta Sans (Display/Headings) + Inter (Body/UI) */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* --------------------------------------------------------------------------
     1. Design Tokens: Color System (Clinical Integrity & Brand DNA)
     -------------------------------------------------------------------------- */
  --color-brand-primary: #12572b;        /* Exact green extracted from official isologo */
  --color-brand-primary-hover: #0c3e1e;  /* Deep forest hover */
  --color-brand-accent-green: #238343;   /* Emerald accent */
  --color-brand-light: #f0f7f3;          /* Soft clinical light green */
  --color-brand-border: #cbe3d3;         /* Subtle tone border */
  
  /* Brand Maroon / Burgundy Accent */
  --color-brand-maroon: #882635;         /* Official badge and action accent */
  --color-brand-maroon-hover: #6d1d29;
  --color-brand-maroon-light: #fdf2f4;
  --color-brand-maroon-border: #f5c6cb;
  
  /* Surfaces & Neutral Scale (Anti-Slop: clean, high-contrast, non-muddy) */
  --color-surface-bg: #f8fafc;           /* Crisp slate neutral surface */
  --color-surface-card: #ffffff;
  --color-surface-subtle: #f1f5f9;
  --color-text-main: #0f172a;            /* 13.8:1 contrast against white (WCAG AAA) */
  --color-text-secondary: #334155;       /* 8.5:1 contrast */
  --color-text-muted: #64748b;           /* 4.8:1 contrast (WCAG AA compliant) */
  --color-border-subtle: #e2e8f0;
  --color-border-strong: #cbd5e1;

  /* --------------------------------------------------------------------------
     2. Design Tokens: Layered Soft Shadows (Ambient Occlusion + Directional)
     -------------------------------------------------------------------------- */
  --shadow-subtle: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-card: 0 1px 3px 0 rgba(15, 23, 42, 0.04), 0 4px 12px 0 rgba(15, 23, 42, 0.03), 0 0 0 1px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 8px -2px rgba(15, 23, 42, 0.03), 0 0 0 1px rgba(18, 87, 43, 0.18);
  --shadow-floating: 0 20px 32px -8px rgba(15, 23, 42, 0.12), 0 6px 12px -3px rgba(15, 23, 42, 0.05);

  /* --------------------------------------------------------------------------
     3. Design Tokens: Motion & Physics (emil-design-eng & animate rules)
     Strict: Spring physics, cubic-bezier curves, zero 'transition: all'
     -------------------------------------------------------------------------- */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);    /* Emil Kowalski natural spring */
  --ease-out-quint: cubic-bezier(0.23, 1, 0.32, 1); /* Precise entry curve */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);     /* Linear-adjacent color shifts */
  
  --duration-fast: 160ms;
  --duration-normal: 240ms;
  --duration-slow: 350ms;

  /* --------------------------------------------------------------------------
     4. Design Tokens: Radii System
     -------------------------------------------------------------------------- */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.625rem;   /* 10px */
  --radius-lg: 1rem;       /* 16px */
  --radius-xl: 1.5rem;     /* 24px */
  --radius-full: 9999px;
}

/* Base & Typography Reset */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

body {
  background-color: var(--color-surface-bg);
  color: var(--color-text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Tipografía de Encabezados (Plus Jakarta Sans: editorial, precisa, no-slop) */
h1, h2, h3, h4, .font-display {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: -0.025em;
}

/* --------------------------------------------------------------------------
   WAI-ARIA Accessibility: Skip Links & Focus Rings
   -------------------------------------------------------------------------- */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-brand-primary);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: transform var(--duration-fast) var(--ease-spring);
}
.skip-to-content:focus {
  top: 1rem;
  transform: translateY(0);
  outline: 2px solid var(--color-brand-maroon);
  outline-offset: 2px;
}

/* Focus Visible: Zero mouse flash, distinct keyboard focus */
:focus-visible {
  outline: 2px solid var(--color-brand-primary);
  outline-offset: 2px;
}
:focus:not(:focus-visible) {
  outline: none;
}

/* --------------------------------------------------------------------------
   Buttons with Tactile Spring Physics (:active feedback)
   Prohibido transition: all. Propiedades declaradas explícitamente.
   -------------------------------------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--color-brand-primary);
  color: #ffffff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-spring), 
              background-color var(--duration-fast) var(--ease-smooth), 
              box-shadow var(--duration-fast) var(--ease-spring);
}
.btn-primary:hover {
  background-color: var(--color-brand-primary-hover);
  transform: translateY(-1.5px);
  box-shadow: var(--shadow-card);
}
.btn-primary:active {
  transform: scale(0.975); /* Tactile feedback */
}

.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--color-brand-maroon);
  color: #ffffff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-spring), 
              background-color var(--duration-fast) var(--ease-smooth), 
              box-shadow var(--duration-fast) var(--ease-spring);
}
.btn-accent:hover {
  background-color: var(--color-brand-maroon-hover);
  transform: translateY(-1.5px);
  box-shadow: var(--shadow-card);
}
.btn-accent:active {
  transform: scale(0.975);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: #ffffff;
  color: var(--color-brand-primary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-brand-border);
  box-shadow: var(--shadow-subtle);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-spring), 
              background-color var(--duration-fast) var(--ease-smooth), 
              border-color var(--duration-fast) var(--ease-smooth);
}
.btn-secondary:hover {
  background-color: var(--color-brand-light);
  border-color: var(--color-brand-primary);
  transform: translateY(-1.5px);
}
.btn-secondary:active {
  transform: scale(0.975);
}

/* --------------------------------------------------------------------------
   Cards: Clean Surfaces, Discrete 2px Lift & Contained Image Zoom
   -------------------------------------------------------------------------- */
.service-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--duration-normal) var(--ease-spring), 
              box-shadow var(--duration-normal) var(--ease-spring), 
              border-color var(--duration-fast) var(--ease-smooth);
}
.service-card:hover {
  transform: translateY(-2.5px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-brand-border);
}

/* Step Card (Cadena de Custodia & Proceso Diagnóstico) */
.step-card {
  background: var(--color-surface-card);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  transition: transform var(--duration-normal) var(--ease-spring),
              border-color var(--duration-fast) var(--ease-smooth),
              box-shadow var(--duration-normal) var(--ease-spring);
}
.step-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-brand-border);
  box-shadow: var(--shadow-card);
}

/* Photo containment: subtle 1.02 zoom (taste-skill rule: no sub-pixel blur) */
.zoom-containment {
  overflow: hidden;
}
.zoom-containment img {
  transition: transform var(--duration-slow) var(--ease-out-quint);
}
.group:hover .zoom-containment img {
  transform: scale(1.02);
}

/* --------------------------------------------------------------------------
   Badges & Tags (Clinical Trust)
   -------------------------------------------------------------------------- */
.badge-verified {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  background-color: var(--color-brand-light);
  color: var(--color-brand-primary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid var(--color-brand-border);
}

.badge-maroon {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  background-color: var(--color-brand-maroon-light);
  color: var(--color-brand-maroon);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid var(--color-brand-maroon-border);
}

/* --------------------------------------------------------------------------
   Sticky Navbar Transitions (Performance-first)
   -------------------------------------------------------------------------- */
.navbar-scrolled {
  background-color: rgba(255, 255, 255, 0.96) !important;
  backdrop-filter: blur(12px);
  border-color: var(--color-border-subtle);
  box-shadow: var(--shadow-subtle);
}

/* --------------------------------------------------------------------------
   Clinical Pattern Backdrop (Subtle SVG Grid)
   -------------------------------------------------------------------------- */
.clinical-grid-pattern {
  background-image: radial-gradient(rgba(18, 87, 43, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* --------------------------------------------------------------------------
   Lightbox Modal Transition (emil-design-eng: natural pop-in scale 0.96 -> 1)
   -------------------------------------------------------------------------- */
.modal-enter {
  animation: modalPopIn 220ms var(--ease-spring) forwards;
}

@keyframes modalPopIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* --------------------------------------------------------------------------
   Floating WhatsApp Tactile Button
   -------------------------------------------------------------------------- */
.whatsapp-float-btn {
  transition: transform var(--duration-fast) var(--ease-spring), 
              box-shadow var(--duration-fast) var(--ease-spring),
              background-color var(--duration-fast) var(--ease-smooth);
}
.whatsapp-float-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 24px -4px rgba(37, 211, 102, 0.35);
}
.whatsapp-float-btn:active {
  transform: scale(0.96);
}

/* --------------------------------------------------------------------------
   Form inputs with clean focus ring
   -------------------------------------------------------------------------- */
.form-input-field {
  transition: border-color var(--duration-fast) var(--ease-smooth),
              box-shadow var(--duration-fast) var(--ease-smooth);
}
.form-input-field:focus {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 3px rgba(18, 87, 43, 0.12);
  outline: none;
}

/* --------------------------------------------------------------------------
   Print Stylesheet
   -------------------------------------------------------------------------- */
@media print {
  .no-print, header, footer, .whatsapp-float-btn {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
}