/* ============================================
   VARIABLES Y FUNDAMENTOS MODERNOS
   ============================================ */
:root {
  /* Colores principales */
  --primary: #3B82F6;
  --primary-hover: #2563EB;
  --primary-soft: rgba(59, 130, 246, 0.15);
  --secondary: #8B5CF6;
  --secondary-hover: #7C3AED;
  
  /* Glassmorphism mejorado */
  --glass-bg: rgba(15, 23, 42, 0.75);
  --glass-bg-light: rgba(30, 41, 59, 0.6);
  --glass-border: rgba(148, 163, 184, 0.2);
  --glass-hover: rgba(59, 130, 246, 0.08);
  
  /* Textos */
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  /* Inputs */
  --input-bg: rgba(15, 23, 42, 0.8);
  --input-bg-hover: rgba(30, 41, 59, 0.9);
  --input-border: rgba(148, 163, 184, 0.25);
  --input-focus: rgba(59, 130, 246, 0.5);
  
  /* Estados */
  --success: #10B981;
  --success-soft: rgba(16, 185, 129, 0.15);
  --danger: #EF4444;
  --danger-soft: rgba(239, 68, 68, 0.15);
  --warning: #F59E0B;
  --info: #06B6D4;
  
  /* Sombras modernas */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  
  /* Transiciones suaves */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Radios de borde */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-full: 999px;
}

/* ============================================
   RESET Y BASE
   ============================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
  background: 
    radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.15), transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15), transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.05), transparent 70%),
    linear-gradient(135deg, #0F172A 0%, #020617 100%);
  color: var(--text-primary);
  min-height: 100vh;
  padding: var(--spacing-lg);
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.5);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--secondary-hover));
}

/* ============================================
   CONTENEDORES PRINCIPALES
   ============================================ */
.container {
  max-width: 1280px;
  margin: 0 auto;
  animation: fadeInUp 0.6s ease-out;
}

.main-content {
  background: var(--glass-bg);
  backdrop-filter: blur(30px) saturate(150%);
  -webkit-backdrop-filter: blur(30px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.main-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  pointer-events: none;
}

.main-content:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

/* ============================================
   HEADER DE LA APP
   ============================================ */
.app-header {
  background: linear-gradient(135deg, var(--primary-soft), rgba(139, 92, 246, 0.12));
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: fadeInDown 0.5s ease-out;
}

.app-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

.app-header h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #60A5FA 0%, #A78BFA 50%, #C084FC 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.app-header p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  z-index: 1;
}

/* ============================================
   SECCIONES
   ============================================ */
.section {
  padding: var(--spacing-xl) var(--spacing-lg);
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
  transition: background-color var(--transition-base);
}

.section:hover {
  background-color: var(--glass-hover);
}

.section:last-child {
  border-bottom: none;
}

.section-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.section-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-md), 0 0 20px rgba(59, 130, 246, 0.4);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.section-icon:hover {
  transform: translateY(-3px) rotate(5deg);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(59, 130, 246, 0.6);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

/* ============================================
   FORMULARIOS
   ============================================ */
.form-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .form-grid-2 { grid-template-columns: repeat(2, 1fr); }
  .form-grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-label.required::after {
  content: '*';
  color: var(--danger);
  font-size: 1rem;
}

/* Inputs, Selects, Textarea */
.form-input,
.form-select,
.form-textarea {
  padding: 0.875rem 1rem;
  background: var(--input-bg);
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--transition-base);
  outline: none;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  background: var(--input-bg-hover);
  border-color: rgba(148, 163, 184, 0.4);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: inherit;
  line-height: 1.6;
}

/* Select personalizado */
.form-select {
  appearance: none;
  cursor: pointer;
  background-image: 
    linear-gradient(45deg, transparent 50%, var(--text-secondary) 50%),
    linear-gradient(135deg, var(--text-secondary) 50%, transparent 50%);
  background-position: 
    calc(100% - 18px) center,
    calc(100% - 12px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 2.5rem;
}

.form-select option {
  background-color: #0F172A;
  color: var(--text-primary);
  padding: 0.5rem;
}

select,
select option {
  background-color: #0F172A;
  color: var(--text-primary);
}

/* Estados de focus */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  background: var(--input-bg-hover);
  box-shadow: 0 0 0 3px var(--input-focus), var(--shadow-sm);
  transform: translateY(-1px);
}

/* Estados disabled */
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: rgba(15, 23, 42, 0.5);
}

/* ============================================
   CAMPOS DE TIEMPO
   ============================================ */
.time-field {
  display: flex;
  align-items: flex-end;
  gap: var(--spacing-sm);
}

.time-button {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border: none;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.time-button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.time-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.time-button:hover::before {
  opacity: 1;
}

.time-button:active {
  transform: translateY(0) scale(0.96);
}

/* ============================================
   RADIOS Y CHECKBOXES CUSTOM
   ============================================ */
.radio-group,
.checkbox-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--spacing-sm);
}

.radio-option,
.checkbox-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.625rem 1.125rem;
  background: var(--glass-bg-light);
  border: 1.5px solid var(--glass-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-base);
  user-select: none;
}

.radio-option:hover,
.checkbox-option:hover {
  background: var(--glass-hover);
  border-color: rgba(148, 163, 184, 0.4);
  transform: translateY(-2px);
}

.radio-option input,
.checkbox-option input {
  accent-color: var(--primary);
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.radio-option.selected,
.checkbox-option.selected {
  border-color: var(--primary);
  background: var(--primary-soft);
  transform: translateY(-2px);
  box-shadow: 0 0 0 3px var(--input-focus);
}

/* ============================================
   CONTROLES Y GRUPOS
   ============================================ */
.controls-wrapper {
  display: grid;
  gap: var(--spacing-lg);
}

.control-group {
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.control-group:hover {
  border-color: rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-md);
}

/* ============================================
   TABLAS
   ============================================ */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: var(--spacing-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: block;
  overflow-x: auto;
  box-shadow: var(--shadow-md);
}

.data-table thead {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(139, 92, 246, 0.9));
  position: sticky;
  top: 0;
  z-index: 10;
}

.data-table th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--text-primary);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
  background: rgba(15, 23, 42, 0.9);
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: background-color var(--transition-fast);
}

.data-table tbody tr {
  transition: all var(--transition-fast);
}

.data-table tbody tr:hover {
  background: var(--glass-hover);
}

.data-table tbody tr:hover td {
  background: var(--glass-hover);
}

.data-table tbody tr:nth-child(even) td {
  background: rgba(15, 23, 42, 0.8);
}

/* ============================================
   BOTONES
   ============================================ */
.btn {
  padding: 0.875rem 1.75rem;
  border: none;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
}

.btn-primary:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #059669);
  color: #fff;
}

.btn-success:hover {
  box-shadow: var(--shadow-lg), 0 0 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #DC2626);
  color: #fff;
}

.btn-danger:hover {
  box-shadow: var(--shadow-lg), 0 0 20px rgba(239, 68, 68, 0.4);
}

.btn-secondary {
  background: var(--glass-bg-light);
  color: var(--text-primary);
  border: 1.5px solid var(--glass-border);
}

.btn-secondary:hover {
  background: var(--glass-bg);
  border-color: rgba(148, 163, 184, 0.4);
}

.btn-add {
  background: linear-gradient(135deg, var(--success), #059669);
  color: #fff;
  margin-top: var(--spacing-md);
}

.btn-remove {
  background: linear-gradient(135deg, var(--danger), #DC2626);
  color: #fff;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============================================
   BARRA DE ACCIONES
   ============================================ */
.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--glass-bg);
  justify-content: center;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  border-top: 1px solid var(--glass-border);
}

/* ============================================
   SECCIÓN FINAL
   ============================================ */
.final-section {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(251, 191, 36, 0.12));
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.final-section:hover {
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(245, 158, 11, 0.2);
}

/* ============================================
   MODALES
   ============================================ */
.preview-modal,
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  padding: var(--spacing-lg);
  overflow-y: auto;
  animation: fadeIn 0.3s ease-out;
}

.modal-content,
.preview-modal-content {
  background: linear-gradient(135deg, #0F172A, #020617);
  border: 1px solid var(--glass-border);
  margin: auto;
  margin-top: 2rem;
  margin-bottom: 2rem;
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 800px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: slideInUp 0.4s ease-out;
}

.modal-header,
.preview-header {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(139, 92, 246, 0.9));
  padding: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.modal-header h2,
.preview-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
}

.close {
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

.close:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: rotate(90deg);
}

/* ============================================
   FIRMA
   ============================================ */
.signature-pad-container {
  border: 2px dashed var(--primary);
  border-radius: var(--radius-lg);
  background: var(--input-bg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.signature-pad-container:hover {
  border-color: var(--primary-hover);
  background: var(--input-bg-hover);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

/* ============================================
   PREVIEW
   ============================================ */
.preview-content {
  padding: var(--spacing-xl);
  font-size: 0.9375rem;
}

.preview-section {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.preview-section:hover {
  border-color: rgba(148, 163, 184, 0.4);
  box-shadow: var(--shadow-sm);
}

.preview-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.preview-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.preview-label {
  font-weight: 700;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.preview-value {
  color: var(--text-primary);
  font-weight: 600;
}

/* ============================================
   INDICADOR DE AUTOGUARDADO
   ============================================ */
.autosave-indicator {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  background: linear-gradient(135deg, var(--success), #059669);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 9999;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.autosave-indicator.show {
  opacity: 1;
  animation: slideInRight 0.4s ease-out;
}

/* ============================================
   ANIMACIONES
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* ============================================
   UTILIDADES Y HELPERS
   ============================================ */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(59, 130, 246, 0.2),
    transparent
  );
  animation: shimmer 2s infinite;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card {
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(148, 163, 184, 0.4);
}

#errorContainer {
  margin: 12px 0 0;
}

#errorContainer ul {
  margin: 8px 0 0 18px;
  padding-left: 18px;
}

#errorContainer li {
  margin: 4px 0;
}

.alert {
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-top: var(--spacing-sm);
  font-size: 0.95rem;
  border: 1px solid transparent;
}

.alert-danger {
  background: var(--danger-soft);
  color: #fecaca;
  border-color: rgba(239, 68, 68, 0.4);
}

.form-input.error,
.form-select.error,
textarea.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 2px var(--danger-soft);
}

.error-message {
  color: #fecaca;
  font-size: 0.8rem;
  margin-top: 4px;
  line-height: 1.4;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 767px) {
  body {
    padding: var(--spacing-sm);
  }
  
  .app-header {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .section {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .preview-item {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
  }
  
  .action-bar {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .data-table {
    font-size: 0.75rem;
  }
  
  .data-table th,
  .data-table td {
    padding: 0.5rem;
  }
}

/* ============================================
   MODO OSCURO FORZADO
   ============================================ */
@media (prefers-color-scheme: dark) {
  /* Ya está en modo oscuro por defecto */
}

/* ============================================
   IMPRESIÓN
   ============================================ */
@media print {
  body {
    background: white;
    color: black;
  }
  
  .btn,
  .action-bar {
    display: none;
  }
  
  .main-content {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}