/* ── Custom CSS on top of Tailwind ────────────────────────────────────────── */

/* Smooth transitions */
*, *::before, *::after {
  transition-property: color, background-color, border-color, box-shadow;
  transition-duration: 150ms;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Keep transform/opacity fast */
.transition-all {
  transition-property: all;
}

/* Modal backdrop */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.hidden {
  display: none;
}

/* Toast notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideIn 0.2s ease;
}

.toast-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.toast-error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.toast-info    { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

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

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Tutor card hover */
.tutor-card:hover {
  box-shadow: 0 4px 24px rgba(0,0,0,0.10);
}

/* Step indicators */
.step-indicator.active { background: #4f46e5; color: white; }
.step-indicator.done   { background: #1e6e31; color: white; }
.step-indicator.todo   { background: #e2e8f0; color: #64748b; }