.katteni-builder {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  line-height: 1.5;
  margin: 16px 0;
}

.katteni-head { margin-bottom: 12px; }
.katteni-title { font-size: 20px; font-weight: 800; }
.katteni-sub { font-size: 13px; opacity: .8; margin-top: 4px; }

.katteni-card {
  border: 1px solid rgba(0,0,0,.12);
  border-radius: 12px;
  padding: 14px;
  margin: 12px 0;
  background: #fff;
}

.katteni-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.katteni-span2 { grid-column: span 2; }

.katteni-grid label span {
  display: block;
  font-size: 12px;
  opacity: .85;
  margin-bottom: 6px;
}

.katteni-input, .katteni-textarea, .katteni-output, .katteni-cell {
  width: 100%;
  box-sizing: border-box;
  padding: 9px 10px;
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 10px;
  outline: none;
}
.katteni-textarea { resize: vertical; }
.katteni-output {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  margin-top: 10px;
  background: rgba(0,0,0,.03);
}

.katteni-row-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.katteni-section-title { font-weight: 800; }

.katteni-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.katteni-btn {
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 999px;
  padding: 8px 12px;
  background: #fff;
  cursor: pointer;
}
.katteni-btn:hover { background: rgba(0,0,0,.04); }
.katteni-btn-primary {
  border-color: rgba(0,0,0,.25);
  font-weight: 800;
}
.katteni-btn-ghost { opacity: .9; }

.katteni-table-wrap { overflow-x: auto; margin-top: 10px; }
.katteni-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
}
.katteni-table th, .katteni-table td {
  border-bottom: 1px solid rgba(0,0,0,.10);
  padding: 8px;
  vertical-align: middle;
}
.katteni-table th { text-align: left; font-size: 12px; opacity: .85; }

.katteni-center { text-align: center; }

.katteni-actions-cell { white-space: nowrap; }
.katteni-mini {
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 10px;
  padding: 6px 8px;
  background: #fff;
  cursor: pointer;
  margin-right: 6px;
}
.katteni-mini:disabled {
  opacity: .4;
  cursor: not-allowed;
}
.katteni-danger { border-color: rgba(220,0,0,.25); }

.katteni-note {
  font-size: 12px;
  opacity: .85;
  margin-top: 10px;
}

.katteni-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(10px);
  opacity: 0;
  transition: all .2s ease;
  background: rgba(0,0,0,.85);
  color: #fff;
  padding: 10px 12px;
  border-radius: 999px;
  z-index: 999999;
  font-size: 13px;
}
.katteni-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}