.bookform-open { overflow: hidden; }

.bookform-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  z-index: 1000;
}

.bookform-card {
  width: min(800px, 92vw);
  max-height: 90vh;
  overflow: auto;
  background: var(--primary-color);
  color: var(--text-color);
  border-radius: 12px;
  border: 1px solid color-mix(in oklab, var(--text-color) 20%, transparent);
  box-shadow: 0 20px 60px rgba(0,0,0,.35);
}

.bookform-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid color-mix(in oklab, var(--text-color) 15%, transparent);
}

.bookform-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.bookform-close {
  border: none;
  background: transparent;
  color: var(--text-color);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.bookform-body {
  padding: 1rem 1.25rem;
}

.book-form {
  display: grid;
  gap: .75rem;
}

.bf-row {
  display: grid;
  gap: .35rem;
}

.bf-label {
  font-size: .9rem;
  opacity: .85;
}

.bf-input {
  padding: .6rem .7rem;
  border-radius: 8px;
  border: 1px solid color-mix(in oklab, var(--text-color) 20%, transparent);
  background: color-mix(in oklab, var(--primary-color) 92%, black 8%);
  color: var(--text-color);
}

.bookform-actions {
  display: flex;
  justify-content: flex-end;
  gap: .5rem;
  padding: 0 1.25rem 1rem;
}

.bf-btn {
  padding: .55rem .9rem;
  border-radius: 8px;
  border: 1px solid color-mix(in oklab, var(--text-color) 25%, transparent);
  background: transparent;
  color: var(--text-color);
  cursor: pointer;
  transition: transform .1s ease-in-out, filter .1s ease-in-out;
}

.bf-btn:hover {
  transform: scale(1.01);
  filter: brightness(1.05);
}

.bf-btn-primary {
  background: var(--text-color);
  color: var(--primary-color);
  border-color: var(--text-color);
}

.bf-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bf-btn:disabled:hover {
  transform: none;
  filter: none;
}