:root {
  /* Colores principales */
  --cat-yellow: #FFCD11;
  --cat-yellow-dark: #E6B800;
  --dark-blue: #1A2332;
  --medium-blue: #2C3E50;
  
  /* Colores de estado */
  --orange-alert: #FF6B35;
  --red-error: #E74C3C;
  --green-success: #27AE60;
  
  /* Neutros */
  --gray-light: #F5F6F8;
  --gray-medium: #BDC3C7;
  --gray-dark: #7F8C8D;
  --white: #FFFFFF;
  --black: #000000;
  
  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--gray-light);
  color: var(--dark-blue);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Botones */
.btn-primary {
  background: var(--cat-yellow);
  color: var(--dark-blue);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--cat-yellow-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255,205,17,0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--dark-blue);
  border: 2px solid var(--gray-medium);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  border-color: var(--dark-blue);
  background: var(--gray-light);
}

.btn-outline {
  background: transparent;
  color: var(--cat-yellow);
  border: 2px solid var(--cat-yellow);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: var(--cat-yellow);
  color: var(--dark-blue);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Utilidades */
.hidden {
  display: none !important;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.text-center { text-align: center; }
.text-right { text-align: right; }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Formularios */
.input-group {
  margin-bottom: 1rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark-blue);
}

.input-group input,
.input-group select,
.input-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--gray-medium);
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--cat-yellow);
}

/* Loading spinner */
.spinner {
  border: 3px solid var(--gray-light);
  border-top: 3px solid var(--cat-yellow);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}


/* Notificaciones Toast */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  color: var(--white);
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  opacity: 0;
  transform: translateX(400px);
  transition: all 0.3s ease;
  z-index: 9999;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast-info {
  background: var(--medium-blue);
}

.toast-success {
  background: var(--green-success);
}

.toast-error {
  background: var(--red-error);
}

.toast-warning {
  background: var(--orange-alert);
}

/* Spinner overlay */
.spinner-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}