/* ========== PHASE 0 IMPROVEMENTS ========== */
/* Loading Spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(0, 120, 212, 0.2);
  border-top: 3px solid var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
}

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

.spinner-large {
  width: 48px;
  height: 48px;
  border-width: 4px;
  margin: 0 auto;
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  text-align: center;
}

.loading-container.hidden {
  display: none;
}

/* Notifications & Alerts */
.notification-container {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 10000;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

@media (max-width: 480px) {
  .notification-container {
    top: auto;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    max-width: none;
  }
}

.notification {
  background: var(--bg-card);
  border-left: 4px solid var(--primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  animation: slideIn 0.3s ease;
  font-size: 0.95rem;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.notification.success {
  border-left-color: var(--success);
  background: linear-gradient(to right, rgba(16, 124, 16, 0.1), var(--bg-card));
  color: var(--success);
}

.notification.error {
  border-left-color: var(--danger);
  background: linear-gradient(to right, rgba(232, 17, 35, 0.1), var(--bg-card));
  color: var(--danger);
}

.notification.warning {
  border-left-color: var(--warning);
  background: linear-gradient(to right, rgba(216, 59, 1, 0.1), var(--bg-card));
  color: var(--warning);
}

.notification-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0;
  margin-left: auto;
}

.notification-close:hover {
  opacity: 0.7;
}

/* File upload feedback */
.file-upload-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: rgba(16, 124, 16, 0.1);
  border: 1px solid var(--success);
  border-radius: var(--border-radius);
  color: var(--success);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
}

.file-upload-status.error {
  background: rgba(232, 17, 35, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

/* Utility classes */
.hidden { display: none !important; }
.visible { display: block !important; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.ml-1 { margin-left: var(--spacing-sm); }
.mr-1 { margin-right: var(--spacing-sm); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.text-center { text-align: center; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }