/* ========== VARIABLES CSS GLOBALES ========== */
:root {
  /* Colores principales */
  --primary-orange: #ff6b35;
  --primary-orange-dark: #e55a2b;
  --secondary-orange: #f7931e;
  --primary-green: #27ae60;
  --primary-green-dark: #229954;
  --primary-green-darker: #1e8449;
  --success-green: #4CAF50;
  
  /* Estados */
  --success-bg: #d4edda;
  --success-text: #155724;
  --success-border: #c3e6cb;
  --error-bg: #f8d7da;
  --error-text: #721c24;
  --error-border: #f5c6cb;
  --danger: #dc3545;
  --danger-dark: #c82333;
  
  /* Neutros */
  --text-primary: #2c3e50;
  --text-secondary: #34495e;
  --text-muted: #666;
  --text-light: #6c757d;
  --bg-primary: #f5f5f5;
  --bg-secondary: #f8f9fa;
  --bg-light: #e9ecef;
  --border-color: #ddd;
  --border-light: #e9ecef;
  --white: #ffffff;
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Tipografía */
  --font-sm: 0.8rem;
  --font-base: 1rem;
  --font-lg: 1.1rem;
  --font-xl: 1.2rem;
  --font-xxl: 1.5rem;
  --font-huge: 2rem;
  
  /* Efectos */
  --shadow-sm: 0 2px 5px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 15px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 30px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;
  --transition-fast: all 0.2s ease;
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
  --gradient-green: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
}

/* ========== RESET Y BASE GLOBALES ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: Arial, sans-serif; background-color: var(--bg-primary); }

/* ========== MODAL BÁSICO GLOBAL ========== */
.modal {
  position: fixed; 
  z-index: 1000; 
  left: 0; 
  top: 0; 
  width: 100%; 
  height: 100%;
  background-color: rgba(0,0,0,0.5); 
  overflow-y: auto;
}

.modal-content {
  background-color: var(--white); 
  margin: 3% auto;
  padding: 16px;
  border-radius: 12px;
  width: 90%;
  max-width: 650px;
  position: relative; 
  max-height: 90vh;
  overflow-y: auto;
}

.close {
  color: #aaa; 
  float: right; 
  font-size: 28px; 
  font-weight: bold; 
  cursor: pointer;
  position: sticky; 
  top: 0; 
  z-index: 1001;
}

.close:hover { 
  color: var(--primary-orange); 
}

/* ========== FORMULARIOS BÁSICOS GLOBALES ========== */
.form-grid { 
  display: grid; 
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
  gap: var(--spacing-md); 
}

.form-group { 
  margin-bottom: var(--spacing-md); 
}

.form-group label { 
  display: block; 
  margin-bottom: var(--spacing-sm); 
  font-weight: bold; 
  color: var(--text-secondary); 
}

.form-control {
  width: 100%; 
  padding: 12px; 
  border: 2px solid var(--border-color); 
  border-radius: 8px;
  font-size: var(--font-base); 
  transition: border-color 0.3s;
}

.form-control:focus { 
  outline: none; 
  border-color: var(--primary-orange); 
  box-shadow: 0 0 5px rgba(255, 107, 53, 0.3); 
}

.form-control[readonly] { 
  background-color: var(--bg-secondary) !important; 
  border-color: var(--text-light) !important; 
  cursor: not-allowed; 
}

.campo-prellenado { 
  background-color: #f0f8ff !important; 
  border-color: var(--success-green) !important; 
}

.campo-readonly-note {
  display: block; 
  margin-top: var(--spacing-xs); 
  color: var(--text-muted) !important;
  font-size: var(--font-sm) !important; 
  font-style: italic;
}

/* ========== BOTONES BÁSICOS GLOBALES ========== */
.btn-secondary {
  background: var(--text-light); 
  color: var(--white); 
  padding: 15px 30px; 
  border: none;
  border-radius: 8px; 
  font-weight: bold; 
  cursor: pointer; 
  transition: var(--transition);
}

.btn-secondary:hover { 
  background: #5a6268; 
}

.btn-large { 
  padding: 15px 30px; 
  font-size: var(--font-lg); 
}

.btn:disabled { 
  opacity: 0.6; 
  cursor: not-allowed; 
}

.btn-eliminar {
  background: var(--danger); 
  color: var(--white); 
  border: none; 
  padding: 5px 10px;
  border-radius: 5px; 
  cursor: pointer; 
  font-size: var(--font-sm); 
  margin-top: 5px;
}

.btn-eliminar:hover { 
  background: var(--danger-dark); 
}

/* ========== RADIO BUTTONS GLOBALES ========== */
.radio-group { 
  display: flex; 
  flex-direction: column; 
  gap: var(--spacing-md); 
}

.radio-option {
  display: flex; 
  align-items: center; 
  cursor: pointer; 
  padding: var(--spacing-md); 
  background: var(--white);
  border-radius: 8px; 
  border: 2px solid var(--bg-light); 
  transition: var(--transition);
}

.radio-option:hover { 
  border-color: var(--primary-orange); 
  background: #fff5f2; 
}

.radio-option input[type="radio"] { 
  display: none; 
}

.radio-custom {
  width: 20px; 
  height: 20px; 
  border: 2px solid var(--border-color); 
  border-radius: 50%;
  margin-right: var(--spacing-md); 
  position: relative; 
  transition: var(--transition); 
  flex-shrink: 0;
}

.radio-option input[type="radio"]:checked + .radio-custom { 
  border-color: var(--primary-orange); 
  background: var(--primary-orange); 
}

.radio-option input[type="radio"]:checked + .radio-custom::after {
  content: ''; 
  position: absolute; 
  top: 50%; 
  left: 50%; 
  transform: translate(-50%, -50%);
  width: 8px; 
  height: 8px; 
  background: var(--white); 
  border-radius: 50%;
}

/* ========== ANIMACIONES GLOBALES ========== */
@keyframes loading { 
  0% { background-position: 200% 0; } 
  100% { background-position: -200% 0; } 
}

@keyframes slideInUp { 
  from { opacity: 0; transform: translateY(20px); } 
  to { opacity: 1; transform: translateY(0); } 
}

/* ========== RESPONSIVE GLOBAL ========== */
@media (max-width: 768px) {
  :root { 
    --font-huge: 1.5rem; 
    --font-xxl: 1.3rem; 
    --font-xl: 1.1rem; 
    --font-lg: 1rem; 
  }

  .modal-content { 
    width: 95%;
    margin: 2% auto; 
    padding: 12px; 
    max-height: 95vh;
  }

  .close { 
    font-size: 24px; 
  }

  .form-grid { 
    grid-template-columns: 1fr; 
  }

  .radio-group { 
    gap: var(--spacing-sm); 
  }

  .radio-option { 
    padding: 0.75rem; 
  }

  .btn-large { 
    padding: 12px 20px; 
    font-size: var(--font-base); 
  }
}

@media (max-width: 480px) {
  :root { 
    --font-huge: 1.3rem; 
    --font-xxl: 1.1rem; 
    --font-xl: 1rem; 
    --font-lg: 0.95rem; 
  }

  .modal-content { 
    width: 98%; 
    padding: 10px; 
  }

  .close { 
    font-size: 20px; 
  }

  .form-group { 
    margin-bottom: 0.75rem; 
  }

  .form-group label { 
    font-size: 0.9rem; 
    margin-bottom: var(--spacing-xs); 
  }

  .form-control { 
    padding: 10px; 
    font-size: 0.9rem; 
  }

  .campo-readonly-note { 
    font-size: 0.75rem !important; 
  }

  .radio-option { 
    padding: var(--spacing-sm); 
  }

  .radio-custom { 
    width: 16px; 
    height: 16px; 
    margin-right: 0.75rem; 
  }

  .radio-option input[type="radio"]:checked + .radio-custom::after { 
    width: 6px; 
    height: 6px; 
  }

  .btn-large { 
    padding: 10px 16px; 
    font-size: 0.9rem; 
  }

  .btn-eliminar { 
    padding: 4px 8px; 
    font-size: 0.75rem; 
  }
}

@media (max-width: 360px) {
  :root { 
    --font-huge: 1.1rem; 
  }

  .modal-content { 
    padding: 8px; 
  }

  .form-control { 
    padding: 8px; 
    font-size: 0.85rem; 
  }

  .btn-large { 
    padding: 8px 12px; 
    font-size: 0.85rem; 
  }
}