.tool-header { padding: 24px 0 8px; }
.tool-header h1 { margin-bottom: 8px; }
.tool-header p { font-size: 1.05rem; max-width: 720px; margin: 0; }
.workspace {
  display: grid; gap: 20px;
  grid-template-columns: 1fr 1fr;
  margin: 32px 0 48px;
}
.workspace--single { grid-template-columns: 1fr; }
@media (max-width: 900px) { .workspace { grid-template-columns: 1fr; } }
.panel {
  display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 20px;
  box-shadow: var(--shadow-sm); min-width: 0;
}
.panel__head {
  display: flex; flex-wrap: wrap; gap: 8px;
  justify-content: space-between; align-items: center;
  margin-bottom: 12px;
}
.panel__title {
  margin: 0; font-size: 1rem; font-weight: 700; color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.panel__title svg { color: var(--blue); flex-shrink: 0; }
.sub-textarea {
  width: 100%; min-height: 320px;
  padding: 14px 16px; resize: vertical;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--white); color: var(--text);
  font-family: var(--font-mono); font-size: .875rem; line-height: 1.55;
  white-space: pre; overflow: auto;
}
.sub-textarea:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(21,94,239,.15);
}
.sub-textarea[readonly] { background: var(--bg-pale); }
.sub-textarea::placeholder { color: #99A6BE; }
.file-row {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 10px 12px; margin-bottom: 12px;
  border: 1px dashed var(--border-strong); border-radius: var(--radius);
  background: var(--bg-pale); font-size: .9rem;
  align-items: center;
}
.file-row label {
  font-weight: 600; color: var(--text); cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
}
.file-row input[type=file] { font-size: .85rem; max-width: 100%; flex: 1 1 200px; }
.controls {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin: 20px 0; align-items: center;
}
.controls .btn--primary { min-width: 140px; }
.controls .spacer { flex: 1; }
.option-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 20px;
}
.option-field label {
  display: block; font-weight: 600; font-size: .85rem;
  color: var(--text); margin-bottom: 6px;
}
.option-field input[type=number],
.option-field input[type=text],
.option-field select {
  width: 100%; height: 44px; padding: 0 12px;
  border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  background: var(--white);
}
.option-field input:focus, .option-field select:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(21,94,239,.15);
}
.option-check {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .9rem; color: var(--text); cursor: pointer;
  min-height: 32px;
}
.option-check input { width: 18px; height: 18px; }
.tool-status {
  margin: 16px 0 0; padding: 12px 14px;
  border-radius: var(--radius);
  font-size: .9rem; font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg-pale); color: var(--text);
}
.tool-status--success { color: var(--success); background: var(--success-bg); border-color: #BFE6D2; }
.tool-status--error { color: var(--error); background: var(--error-bg); border-color: #F5C7C3; }
.tool-status--warn { color: var(--warn); background: var(--warn-bg); border-color: #F1DCA0; }
.tool-status--info { color: var(--blue-deep); background: var(--info-bg); border-color: #D5E3FF; }
.result-summary { display: flex; flex-wrap: wrap; gap: 12px; margin: 16px 0; }
.stat {
  flex: 1 1 120px; padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-pale);
}
.stat__label {
  font-size: .75rem; font-weight: 600; letter-spacing: .05em;
  text-transform: uppercase; color: var(--text-body);
}
.stat__value {
  font-family: var(--font-mono); font-size: 1.15rem;
  color: var(--text); font-weight: 700; margin-top: 2px;
}
.report-table { width: 100%; border-collapse: collapse; font-size: .9rem; margin: 16px 0; }
.report-table th, .report-table td {
  text-align: left; padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.report-table th {
  font-weight: 700; color: var(--text); background: var(--bg-pale);
  font-size: .78rem; letter-spacing: .04em; text-transform: uppercase;
}
.report-table tr:last-child td { border-bottom: none; }
.report-table td code { font-size: .82rem; }
.issue {
  display: grid; gap: 4px;
  padding: 10px 14px; margin-bottom: 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border); font-size: .88rem;
}
.issue--error { background: var(--error-bg); border-color: #F5C7C3; color: #7A1A0F; }
.issue--warn { background: var(--warn-bg); border-color: #F1DCA0; color: #664700; }
.issue--info { background: var(--info-bg); border-color: #D5E3FF; color: var(--blue-deep); }
.issue__head { font-weight: 700; }
.issue__meta { font-size: .78rem; opacity: .85; }
.sample-block { margin-top: 20px; }
.sample-block h3 { font-size: .95rem; }
.sample-block pre { font-size: .8rem; }
.instructions { max-width: 780px; margin: 0 auto; }
.instructions h2 { margin-top: 32px; }
.instructions ol, .instructions ul { padding-left: 1.4em; }
.instructions li { margin-bottom: 8px; }
.privacy-note {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; margin: 20px 0;
  background: var(--info-bg); border: 1px solid #D5E3FF;
  border-radius: var(--radius); color: var(--blue-deep);
  font-size: .9rem;
}
.privacy-note svg { flex-shrink: 0; color: var(--blue); }
.related {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  margin-top: 24px;
}
@media (max-width: 480px) {
  .panel { padding: 16px; }
  .sub-textarea { min-height: 240px; font-size: .82rem; }
  .controls .btn { width: 100%; }
  .controls .spacer { display: none; }
}