.pf-shell {
  font-family: var(--pf-font-sans);
  color: var(--pf-c-text);
}

.pf-sticky-header {
  position: sticky;
  top: 0;
  z-index: var(--pf-z-sticky);
  backdrop-filter: blur(10px);
  transition: background-color 180ms ease, border-color 180ms ease;
}

.pf-card {
  background: var(--pf-c-surface);
  border: 1px solid var(--pf-c-border);
  border-radius: var(--pf-radius-md);
  box-shadow: var(--pf-shadow-xs);
}

.pf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--pf-space-2);
  padding: 0.62rem 1rem;
  border-radius: var(--pf-radius-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: var(--pf-text-sm);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.pf-btn:hover {
  transform: translateY(-1px);
}

.pf-btn-primary {
  background: linear-gradient(90deg, var(--pf-c-primary), var(--pf-c-primary-600));
  color: #fff;
  box-shadow: var(--pf-shadow-sm);
}

.pf-btn-soft {
  background: var(--pf-c-surface-soft);
  color: var(--pf-c-text);
  border-color: var(--pf-c-border);
}

.pf-input,
.pf-select {
  width: 100%;
  border: 1px solid var(--pf-c-border);
  background: var(--pf-c-surface);
  color: var(--pf-c-text);
  border-radius: var(--pf-radius-sm);
  padding: 0.65rem 0.85rem;
  font-size: var(--pf-text-sm);
}

.pf-input:focus,
.pf-select:focus {
  outline: none;
  border-color: var(--pf-c-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.pf-toast-stack {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: var(--pf-z-overlay);
  display: grid;
  gap: 0.5rem;
}

.pf-toast {
  min-width: 280px;
  max-width: 360px;
  border: 1px solid var(--pf-c-border);
  border-radius: var(--pf-radius-sm);
  background: var(--pf-c-surface);
  color: var(--pf-c-text);
  box-shadow: var(--pf-shadow-md);
  padding: 0.75rem 0.9rem;
  animation: pf-toast-in 180ms ease forwards;
}

.pf-modal-root {
  position: fixed;
  inset: 0;
  z-index: var(--pf-z-modal);
  display: none;
}

.pf-modal-root[data-open="true"] {
  display: block;
}

.pf-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.58);
}

.pf-modal-card {
  position: relative;
  margin: 8vh auto 0;
  width: min(720px, calc(100vw - 1.5rem));
  background: var(--pf-c-surface);
  border: 1px solid var(--pf-c-border);
  border-radius: var(--pf-radius-lg);
  box-shadow: var(--pf-shadow-md);
  overflow: hidden;
}

.pf-skeleton {
  background: linear-gradient(100deg, rgba(148, 163, 184, 0.14) 20%, rgba(148, 163, 184, 0.32) 40%, rgba(148, 163, 184, 0.14) 60%);
  background-size: 200% 100%;
  animation: pf-skeleton 1.2s infinite linear;
  border-radius: var(--pf-radius-sm);
}

@keyframes pf-skeleton {
  0% { background-position: 180% 0; }
  100% { background-position: -20% 0; }
}

@keyframes pf-toast-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}