/* ============================================
   COMPONENTES REUTILIZABLES
   ============================================ */

/* ========== BOTONES ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  min-height: 44px; /* Touch target mínimo */
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Botón Primary */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-text-inverse);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Botón Secondary */
.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text-inverse);
  border-color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Botón Outline */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Botón Ghost */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-dark);
  color: var(--color-text-primary);
}

/* Botón Success */
.btn-success {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
  border-color: var(--color-success);
}

.btn-success:hover {
  background-color: var(--color-success-dark);
  border-color: var(--color-success-dark);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Botón Danger */
.btn-danger {
  background-color: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}

.btn-danger:hover {
  background-color: var(--color-danger-dark);
  border-color: var(--color-danger-dark);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Botón Warning */
.btn-warning {
  background-color: var(--color-warning);
  color: var(--color-text-inverse);
  border-color: var(--color-warning);
}

.btn-warning:hover {
  background-color: var(--color-warning-dark);
  border-color: var(--color-warning-dark);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Tamaños de botones */
.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

/* Botón full width */
.btn-block {
  width: 100%;
  display: flex;
}

/* Botón circular (para iconos) */
.btn-circle {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ========== CARDS ========== */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-elevated {
  box-shadow: var(--shadow-xl);
}

.card-outlined {
  box-shadow: none;
  border: 2px solid var(--color-border);
}

.card-filled {
  background: var(--gradient-card);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

/* ========== INPUTS ========== */
.form-control {
  width: 100%;
  padding: var(--spacing-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  min-height: 44px; /* Touch target mínimo */
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 136, 204, 0.1);
}

.form-control::placeholder {
  color: var(--color-text-tertiary);
}

.form-control:disabled {
  background-color: var(--color-bg-tertiary);
  cursor: not-allowed;
  opacity: 0.6;
}

/* Input con icono */
.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-group .form-control {
  padding-left: var(--spacing-xl);
}

.input-icon {
  position: absolute;
  left: var(--spacing-md);
  color: var(--color-text-tertiary);
  pointer-events: none;
  z-index: 1;
}

/* ========== MODALS ========== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  backdrop-filter: blur(4px);
  animation: fadeIn var(--transition-base);
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  animation: fadeIn var(--transition-base);
}

.modal-dialog {
  width: 100%;
  max-width: 400px;
  margin: auto;
  position: relative;
  z-index: var(--z-modal);
}

.modal-content {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  animation: slideUp var(--transition-base);
}

.modal-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* Bottom Sheet para móvil */
@media (max-width: 767px) {
  .modal-dialog {
    max-width: 100%;
    margin: 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  }
  
  .modal-content {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    animation: slideUpMobile var(--transition-base);
  }
}

/* ========== BADGES ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.badge-success {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
}

.badge-warning {
  background-color: var(--color-warning);
  color: var(--color-text-inverse);
}

.badge-danger {
  background-color: var(--color-danger);
  color: var(--color-text-inverse);
}

/* ========== LOADING STATES ========== */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 4px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 400px;
}

.toast {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  animation: slideInRight var(--transition-base);
  border-left: 4px solid var(--color-primary);
}

.toast-success {
  border-left-color: var(--color-success);
}

.toast-error {
  border-left-color: var(--color-danger);
}

.toast-warning {
  border-left-color: var(--color-warning);
}

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

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

@keyframes slideUpMobile {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ========== UTILIDADES DE DISPLAY ========== */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

@media (min-width: 768px) {
  .d-md-none { display: none !important; }
  .d-md-block { display: block !important; }
  .d-md-flex { display: flex !important; }
}

@media (min-width: 1024px) {
  .d-lg-none { display: none !important; }
  .d-lg-block { display: block !important; }
  .d-lg-flex { display: flex !important; }
}