.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-strong); }
.btn-accent { background: var(--color-accent); color: #1f2937; }
.btn-ghost { background: var(--color-surface); border-color: var(--color-border); color: var(--color-text); }
.btn-danger { background: var(--color-danger); color: white; }
.btn-sm { padding: 8px 12px; min-height: 36px; font-size: .9rem; }
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-pad { padding: 24px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  padding: 6px 10px;
  font-size: .8rem;
  color: var(--color-muted);
  background: var(--color-surface-2);
}
.form-grid { display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field label { font-size: .82rem; font-weight: 800; color: var(--color-muted); }
.input, input, select, textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: var(--color-surface);
  color: var(--color-text);
  padding: 11px 12px;
  outline: none;
}
textarea { resize: vertical; min-height: 96px; }
.input:focus, input:focus, select:focus, textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0, 89, 168, .14); }
.empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  color: var(--color-muted);
  text-align: center;
}
.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1000;
  background: var(--color-text);
  color: var(--color-surface);
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: var(--shadow-md);
  max-width: min(360px, calc(100vw - 32px));
}
@media (max-width: 860px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 50px 0; }
}