/**
 * styles.css
 * Hoja de estilos centralizada para Pediatric NFPE
 * Sistema de diseño basado en lineamientos clínicos.
 */

:root {
  /* Colors */
  --color-primary: #005B7A; /* Azul petróleo profundo */
  --color-primary-light: #0FA9D7; /* Celeste / acento primario */
  --color-primary-dark: #003F54;
  
  --color-secondary: #00A651; /* Verde (Intervention, Normal Z-score) */
  --color-accent-muscle: #B0006D; /* Magenta para músculo */
  --color-accent-fat: #F5B335; /* Amarillo/anaranjado para grasa subcutánea */
  
  /* Status Colors */
  --color-warning: #F5B335;
  --color-danger: #D32F2F;
  --color-success: #00A651;
  --color-info: #E3F2FD;
  
  /* Neutral Colors */
  --color-surface: #FFFFFF;
  --color-background: #F4F6F8; /* Gris clínico muy claro */
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #595959;
  --color-border: #E0E0E0;
  
  /* Typography */
  --font-family-base: 'Inter', 'Atkinson Hyperlegible', Arial, sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.5;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  
  /* Borders & Shadows */
  --border-radius: 8px;
  --box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  
  /* Transitions */
  --transition-fast: 150ms ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
  line-height: 1.2;
}

p {
  margin-top: 0;
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

a:hover, a:focus {
  text-decoration: underline;
  color: var(--color-primary-dark);
}

/* Accessibility Focus */
:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* Layout */
.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md);
}

/* Header & Nav */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--box-shadow);
}

.site-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-container img {
  height: 40px;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  font-family: var(--font-family-base);
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--color-primary-dark);
  text-decoration: none;
}

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

.btn-secondary:hover, .btn-secondary:focus {
  background-color: rgba(0, 91, 122, 0.05);
  text-decoration: none;
}

/* Cards & Containers */
.card {
  background-color: var(--color-surface);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-border);
}

.card-title {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-background);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

.form-label.required::after {
  content: '*';
  color: var(--color-danger);
  margin-left: 4px;
}

.form-control {
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary-light);
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 169, 215, 0.2);
}

textarea.form-control {
  min-height: 80px;
  resize: vertical;
}

/* Radio & Checkbox options */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.radio-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.radio-option:hover {
  background-color: var(--color-background);
}

.radio-option input {
  margin-top: 4px;
}

.radio-option-text {
  flex: 1;
}

.radio-option-title {
  display: block;
  font-weight: 600;
  margin-bottom: 2px;
}

.radio-option-desc {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* Muscle vs Fat Indicators */
.indicator {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 6px;
}

.indicator-muscle {
  background-color: var(--color-accent-muscle);
}

.indicator-fat {
  background-color: var(--color-accent-fat);
}

.tag-muscle {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent-muscle);
  background-color: rgba(176, 0, 109, 0.1);
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag-fat {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: #b37e10; /* Darker version for contrast */
  background-color: rgba(245, 179, 53, 0.15);
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-md);
}

.assessment-layout {
  display: grid;
  grid-template-columns: 1fr minmax(200px, 350px) 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.body-illustration {
  display: flex;
  justify-content: center;
  position: sticky;
  top: 100px;
}

.body-illustration img {
  max-width: 100%;
  height: auto;
}

/* -----------------------------
   MUAC Container
----------------------------- */
.muac-container {
  background: #EAF7FA;
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.muac-header {
  background: #009cde;
  color: white;
  padding: var(--space-md);
  font-weight: 600;
  font-size: 1.1rem;
}
.muac-body {
  display: flex;
  padding: var(--space-lg);
  justify-content: space-between;
  align-items: flex-start;
}
.muac-content {
  flex: 1;
}
.muac-image {
  margin-left: var(--space-lg);
}
.zscore-table th:last-child {
  border-top-right-radius: var(--border-radius);
  text-align: center;
}
.zscore-table td:last-child {
  text-align: center;
}

.zscore-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.zscore-table th {
  background: #004C6D; /* Dark blue from the screenshot */
  color: #FFFFFF;
  text-align: left;
  padding: var(--space-md);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}

.zscore-table th:first-child {
  border-top-left-radius: var(--border-radius);
}

.zscore-table th:last-child {
  border-top-right-radius: var(--border-radius);
}

.zscore-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.zscore-table tr:last-child td {
  border-bottom: none;
}

/* Color patterns for the table */
.color-key {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.color-swatch {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  flex-shrink: 0;
}

.swatch-orange { background: #F5A623; }
.swatch-yellow { background: #F8E71C; }
.swatch-green { background: #7ED321; }
.swatch-hashed-green {
  background: repeating-linear-gradient(45deg, #7ED321, #7ED321 4px, #ffffff 4px, #ffffff 8px);
  border: 1px solid #7ED321;
}
.swatch-hashed-yellow {
  background: repeating-linear-gradient(45deg, #F8E71C, #F8E71C 4px, #ffffff 4px, #ffffff 8px);
  border: 1px solid #e5d617;
}
.swatch-hashed-orange {
  background: repeating-linear-gradient(45deg, #F5A623, #F5A623 4px, #ffffff 4px, #ffffff 8px);
  border: 1px solid #F5A623;
}
.swatch-hashed-red {
  background: repeating-linear-gradient(45deg, #D0021B, #D0021B 4px, #ffffff 4px, #ffffff 8px);
  border: 1px solid #D0021B;
}

/* -----------------------------
   NCP Checklist
----------------------------- */
.ncp-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.ncp-header-row {
  display: flex;
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.ncp-chevron {
  flex: 1;
  text-align: center;
  color: white;
  font-weight: 600;
  padding: 12px 10px 12px 20px;
  position: relative;
  font-size: 0.95rem;
  clip-path: polygon(0% 0%, 95% 0%, 100% 50%, 95% 100%, 0% 100%, 5% 50%);
  margin-left: -15px;
}

.ncp-chevron:first-child {
  clip-path: polygon(0% 0%, 95% 0%, 100% 50%, 95% 100%, 0% 100%);
  margin-left: 0;
  padding-left: 15px;
}

.ncp-chevron:last-child {
  clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%, 5% 50%);
}

.bg-ncp-1 { background: #004d6a; }
.bg-ncp-2 { background: #009cde; }
.bg-ncp-3 { background: #b42573; }
.bg-ncp-4 { background: #32a953; }
.bg-ncp-5 { background: #004d6a; }

.ncp-inputs-row {
  display: flex;
  width: 100%;
  justify-content: space-between;
}

.ncp-input-col {
  flex: 1;
  padding: 0 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ncp-checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--color-text-primary);
  cursor: pointer;
}

.ncp-note-input {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.ncp-note-input input {
  flex: 1;
  border: none;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
  padding: 2px 4px;
  font-size: 0.9rem;
}

.ncp-note-input input:focus {
  outline: none;
  border-bottom-color: var(--color-primary);
}

/* Progress Bar */
.ncp-progress {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xl);
  position: relative;
}

.ncp-progress::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-border);
  z-index: 1;
}

.ncp-step {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 20%;
  text-align: center;
}

.ncp-step-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  transition: all var(--transition-fast);
}

.ncp-step.active .ncp-step-circle {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.ncp-step.completed .ncp-step-circle {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: white;
}

.ncp-step-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.ncp-step.active .ncp-step-label {
  color: var(--color-primary);
  font-weight: 600;
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-logos {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.footer-logos img {
  height: 32px;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  font-size: 0.875rem;
}

/* Alerts */
.alert {
  padding: var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.alert-warning {
  background-color: rgba(245, 179, 53, 0.1);
  border-left: 4px solid var(--color-warning);
  color: #8a640c;
}

.alert-info {
  background-color: var(--color-info);
  border-left: 4px solid var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* Responsive */
@media (max-width: 768px) {
  .assessment-layout {
    grid-template-columns: 1fr;
  }
  
  .body-illustration {
    position: relative;
    top: 0;
    margin-bottom: var(--space-lg);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    display: none; /* simple mobile fallback */
  }
  
  .ncp-step-label {
    font-size: 0.7rem;
  }
}

/* Location Boxes */
.location-box {
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: var(--space-md);
}
.location-header {
  color: white;
  padding: 10px var(--space-md);
  font-weight: 600;
  font-size: 1rem;
}
.location-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
/* Type: Muscle */
.type-muscle .location-header { background: #b42573; }
.type-muscle .location-body { background: #fdf2f7; }

/* Type: Fat */
.type-fat .location-header { background: #f5a623; }
.type-fat .location-body { background: #fef8f0; }

/* Legend */
.legend-container {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  display: inline-flex;
  margin-top: var(--space-md);
  background: white;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  color: var(--color-text-primary);
  font-size: 0.9rem;
}
.legend-color {
  width: 16px;
  height: 16px;
  border-radius: 2px;
}
.bg-muscle { background: #b42573; }
.bg-fat { background: #f5a623; }
.bg-anthro { background: #009cde; }

/* Reference Table Colors */
.color-indicator {
  display: inline-block;
  width: 20px;
  height: 20px;
  vertical-align: middle;
  margin-right: 8px;
  border: 1px solid #ddd;
}
.color-solid-orange { background-color: #F7A128; }
.color-solid-yellow { background-color: #FCEB30; }
.color-solid-green { background-color: #1EA447; }
.color-hashed-green { background: repeating-linear-gradient(45deg, #1EA447, #1EA447 5px, #ffffff 5px, #ffffff 10px); }
.color-hashed-yellow { background: repeating-linear-gradient(45deg, #FCEB30, #FCEB30 5px, #ffffff 5px, #ffffff 10px); }
.color-hashed-orange { background: repeating-linear-gradient(45deg, #F7A128, #F7A128 5px, #ffffff 5px, #ffffff 10px); }
.color-hashed-red { background: repeating-linear-gradient(45deg, #E6202A, #E6202A 5px, #ffffff 5px, #ffffff 10px); }

/* =========================================
   GUÍA CLÍNICA MODAL & ACORDEÓN
========================================= */

/* Botón Flotante */
.btn-floating {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: bold;
  display: flex;
  align-items: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  cursor: pointer;
  z-index: 1000;
  transition: transform 0.2s, background-color 0.2s;
}
.btn-floating:hover {
  transform: translateY(-3px);
  background-color: var(--color-primary-dark);
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  opacity: 0;
  animation: fadeIn 0.3s forwards;
}

/* Modal Content */
.modal-content {
  background: white;
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  border-radius: 12px;
  overflow-y: auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  position: relative;
  transform: translateY(20px);
  animation: slideUp 0.3s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}
@keyframes slideUp {
  to { transform: translateY(0); }
}

/* Modal Header */
.modal-header {
  position: sticky;
  top: 0;
  background: white;
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
}
.btn-close-modal {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-secondary);
  cursor: pointer;
}
.btn-close-modal:hover { color: var(--color-danger); }

/* Modal Body */
.modal-body {
  padding: 20px;
}

/* Acordeón */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}
.accordion-header {
  width: 100%;
  padding: 15px;
  background: var(--color-bg-light);
  border: none;
  text-align: left;
  font-weight: bold;
  font-size: 1rem;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background 0.2s;
}
.accordion-header:hover {
  background: #e2e6ea;
}
.accordion-header.active {
  background: var(--color-primary);
  color: white;
}
.accordion-header.active svg {
  stroke: white;
}

/* Contenido del Acordeón */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  background: white;
}

.guide-card {
  padding: 15px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* Grid de Guía (Normal vs Depleción) */
.guide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-top: 15px;
  background: var(--color-bg-light);
  padding: 15px;
  border-radius: 8px;
}
.guide-normal, .guide-depleted {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.guide-normal p, .guide-depleted p { margin: 0; font-size: 0.9rem; }

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  width: fit-content;
}
.badge.normal { background: #e8f5e9; color: #2e7d32; border: 1px solid #c8e6c9; }
.badge.depleted { background: #ffebee; color: #c62828; border: 1px solid #ffcdd2; }

/* Colores por Tipo de Evaluación (Muscle vs Fat) */
.accordion-item.type-muscle {
  border-left: 4px solid #B0006D;
}
.accordion-item.type-muscle .accordion-header svg {
  color: #B0006D;
}
.accordion-item.type-muscle .accordion-header.active {
  background-color: #B0006D;
  color: white;
}
.accordion-item.type-muscle .accordion-header.active svg {
  color: white;
}

.accordion-item.type-fat {
  border-left: 4px solid #F5B335;
}
.accordion-item.type-fat .accordion-header svg {
  color: #F5B335;
}
.accordion-item.type-fat .accordion-header.active {
  background-color: #F5B335;
  color: white;
}
.accordion-item.type-fat .accordion-header.active svg {
  color: white;
}