/* ==========================================================================
   PARANUTRIOLOGOS.COM - SISTEMA DE DISEÑO CLÍNICO PRÉMIUM (MÉXICO)
   Vanilla CSS v2.0 - Optimized for Core Web Vitals & Accessibility
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Paleta Médica Oficial */
  --brand-primary: #059669;        /* Esmeralda Salud */
  --brand-primary-hover: #047857;
  --brand-primary-light: #ecfdf5;
  --brand-primary-border: #a7f3d0;
  
  --brand-secondary: #0284c7;      /* Azul Clínico */
  --brand-secondary-hover: #0369a1;
  --brand-secondary-light: #f0f9ff;
  --brand-secondary-border: #bae6fd;
  
  --brand-dark: #0f172a;           /* Pizarra Oscuro */
  --brand-dark-soft: #1e293b;
  --brand-gray-100: #f1f5f9;
  --brand-gray-200: #e2e8f0;
  --brand-gray-300: #cbd5e1;
  --brand-gray-500: #64748b;
  --brand-gray-700: #334155;
  
  --bg-page: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  
  /* Semáforos Clínicos */
  --status-success: #10b981;
  --status-success-bg: #ecfdf5;
  --status-warning: #f59e0b;
  --status-warning-bg: #fffbeb;
  --status-danger: #ef4444;
  --status-danger-bg: #fef2f2;
  --status-info: #3b82f6;
  --status-info-bg: #eff6ff;

  /* Tipografía */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', 'Inter', -apple-system, sans-serif;
  
  /* Sombras y Elevación */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.08);
  --shadow-glow: 0 0 25px -5px rgba(5, 150, 105, 0.25);

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

  /* Contenedores */
  --container-max: 1240px;
  --container-narrow: 860px;
}

/* Reset y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--brand-dark);
  background-color: var(--bg-page);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--brand-primary-hover);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--brand-dark);
  line-height: 1.25;
  font-weight: 700;
}

p {
  margin-bottom: 1rem;
}

/* Clases Utilitarias */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  user-select: none;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(5, 150, 105, 0.2);
}

.btn-primary:hover {
  background-color: var(--brand-primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(5, 150, 105, 0.3);
}

.btn-secondary {
  background-color: var(--brand-secondary);
  color: #ffffff;
}

.btn-secondary:hover {
  background-color: var(--brand-secondary-hover);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--brand-gray-300);
  color: var(--brand-dark);
}

.btn-outline:hover {
  border-color: var(--brand-primary);
  background-color: var(--brand-primary-light);
  color: var(--brand-primary);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

/* Insignias y Chips (Badges) */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-mexico {
  background-color: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.badge-primary {
  background-color: var(--brand-primary-light);
  color: var(--brand-primary-hover);
  border: 1px solid var(--brand-primary-border);
}

.badge-secondary {
  background-color: var(--brand-secondary-light);
  color: var(--brand-secondary-hover);
  border: 1px solid var(--brand-secondary-border);
}

.badge-warning {
  background-color: var(--status-warning-bg);
  color: #b45309;
  border: 1px solid #fde68a;
}

.badge-neutral {
  background-color: var(--brand-gray-100);
  color: var(--brand-gray-700);
  border: 1px solid var(--brand-gray-200);
}

/* Tarjetas */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--brand-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.card-hover:hover {
  transform: translateY(-3px);
  border-color: var(--brand-primary-border);
  box-shadow: var(--shadow-lg);
}

/* Form inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--brand-dark);
  margin-bottom: 0.4rem;
}

.form-label .unit-hint {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--brand-gray-500);
}

.form-control {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--brand-gray-200);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--brand-dark);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

/* Alertas y Callouts Clínicos */
.callout {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  border-left: 4px solid;
}

.callout-info {
  background-color: var(--status-info-bg);
  border-left-color: var(--status-info);
  color: #1e3a8a;
}

.callout-warning {
  background-color: var(--status-warning-bg);
  border-left-color: var(--status-warning);
  color: #92400e;
}

.callout-success {
  background-color: var(--status-success-bg);
  border-left-color: var(--status-success);
  color: #065f46;
}

.callout-legal {
  background-color: #faf5ff;
  border-left-color: #9333ea;
  color: #581c87;
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--brand-gray-500);
  margin-bottom: 1.5rem;
}

.breadcrumbs a {
  color: var(--brand-gray-500);
}

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

.breadcrumbs span.separator {
  color: var(--brand-gray-300);
}

.breadcrumbs .current {
  color: var(--brand-dark);
  font-weight: 600;
}