/* ========== ASCII Art Generator ========== */
.tool-container { max-width: 1400px; margin: 0 auto; padding: 24px; }
.tool-header { text-align: center; margin-bottom: 18px; }
.tool-header h1 { font-size: 32px; font-weight: 800; color: var(--color-heading); margin-bottom: 6px; }
.tool-header .tool-desc { font-size: 15px; color: var(--color-muted); max-width: 680px; margin: 0 auto; line-height: 1.6; }

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--color-border); border-radius: 12px;
  padding: 28px 16px; text-align: center; cursor: pointer;
  transition: all 0.3s; margin-bottom: 10px;
  background: var(--color-bg-card); position: relative;
}
.upload-zone:hover, .upload-zone.drag-over { border-color: var(--color-primary); background: rgba(37,99,235,0.05); }
.upload-zone .upload-icon { font-size: 36px; color: var(--color-muted); margin-bottom: 6px; }
.upload-zone .upload-text { font-size: 15px; color: var(--color-text); margin-bottom: 2px; }
.upload-zone .upload-hint { font-size: 13px; color: var(--color-muted); }
.upload-zone input[type="file"] { display: none; }

/* Toolbar rows */
.tool-toolbar {
  padding: 10px 14px; margin-bottom: 10px;
  background: var(--color-bg-card); border-radius: 12px; border: 1px solid var(--color-border);
}
.tb-row {
  display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center;
  margin-bottom: 6px;
}
.tb-row:last-child { margin-bottom: 0; }
.tb-label { font-size: 11px; font-weight: 600; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.3px; white-space: nowrap; }
.tb-select {
  padding: 4px 8px; border: 1px solid var(--color-border); border-radius: 5px;
  font-size: 12px; background: #fff; color: var(--color-text); cursor: pointer; max-width: 130px;
}
.tb-select:focus { outline: none; border-color: var(--color-primary); }
.tb-sep { width: 1px; height: 20px; background: var(--color-border); }
.tb-range { width: 64px; vertical-align: middle; cursor: pointer; }
.tb-val { font-size: 11px; color: var(--color-muted); min-width: 20px; text-align: center; }
.tb-chk {
  display: inline-flex; align-items: center; gap: 3px; cursor: pointer;
  font-size: 12px; color: var(--color-text); user-select: none;
}
.tb-chk input { width: 13px; height: 13px; cursor: pointer; }

/* Tool buttons */
.tool-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 12px; border: none; border-radius: 6px;
  font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.2s; white-space: nowrap;
}
.tool-btn-primary { background: var(--color-primary); color: #fff; }
.tool-btn-primary:hover { background: #1d4ed8; transform: translateY(-1px); box-shadow: 0 3px 10px rgba(37,99,235,0.25); }
.tool-btn-secondary { background: #10b981; color: #fff; }
.tool-btn-secondary:hover { background: #059669; }
.tool-btn-outline { background: #fff; color: var(--color-text); border: 1px solid var(--color-border); }
.tool-btn-outline:hover { background: var(--color-bg-hover); border-color: var(--color-primary); }
.tool-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* Dual-pane layout */
.tool-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin-bottom: 10px;
}
.panel {
  background: var(--color-bg-card); border-radius: 12px; border: 1px solid var(--color-border);
  display: flex; flex-direction: column; min-height: 320px;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; border-bottom: 1px solid var(--color-border);
  font-size: 13px; font-weight: 600; color: var(--color-text);
}
.panel-body { flex: 1; display: flex; align-items: center; justify-content: center; padding: 10px; overflow: auto; position: relative; }
.panel-body img { max-width: 100%; max-height: 360px; object-fit: contain; }
.panel-body pre {
  margin: 0; font-family: 'Consolas','Monaco','Courier New',monospace;
  font-size: 6px; line-height: 1.1; white-space: pre; color: #cdd6f4;
  background: #1e1e2e; padding: 10px; border-radius: 8px; overflow: auto; max-width: 100%; max-height: 380px;
}
.panel-body .preview-empty {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: var(--color-muted); font-size: 13px;
}
.panel-body .preview-empty .icon { font-size: 40px; }

/* Actions */
.tool-actions {
  display: flex; flex-wrap: wrap; gap: 6px; justify-content: center;
  padding: 10px 14px; margin-bottom: 10px;
  background: var(--color-bg-card); border-radius: 12px; border: 1px solid var(--color-border);
}
.actions-sep { width: 1px; height: 24px; background: var(--color-border); margin: 0 4px; }

/* Status */
.status-box { display: none; padding: 8px 14px; margin-bottom: 10px; border-radius: 8px; font-size: 13px; font-weight: 500; text-align: center; }
.status-box.show { display: block; }
.status-success { background: #a6e3a1; border: 1px solid #7bc47f; color: #1b4332; }
.status-error { background: #f38ba8; border: 1px solid #e06a87; color: #4a1a2e; }
.status-info { background: #89b4fa; border: 1px solid #6a91d7; color: #1e293b; }

/* Batch section */
.batch-section { margin-bottom: 10px; }
.batch-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; font-size: 12px; color: var(--color-muted); }
.batch-list {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); gap: 4px;
  max-height: 120px; overflow-y: auto; padding: 6px;
  background: var(--color-bg-card); border-radius: 8px; border: 1px solid var(--color-border);
}
.batch-item {
  display: flex; align-items: center; justify-content: space-between; gap: 4px;
  padding: 4px 8px; border: 1px solid var(--color-border); border-radius: 6px; font-size: 11px;
}
.batch-item .b-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--color-text); }
.batch-item .b-btn { cursor: pointer; color: var(--color-primary); font-weight: 600; font-size: 11px; background: none; border: none; padding: 0; }

/* Info panel */
.tool-info {
  margin-top: 24px; padding: 24px;
  background: var(--color-bg-card); border-radius: 12px; border: 1px solid var(--color-border);
}
.tool-info h2 { font-size: 20px; font-weight: 700; color: var(--color-heading); margin-bottom: 14px; }
.tool-info h3 { font-size: 16px; font-weight: 600; color: var(--color-heading); margin: 18px 0 10px; }
.tool-info p { font-size: 14px; color: var(--color-text); line-height: 1.7; margin-bottom: 10px; }
.tool-info ul { margin: 0 0 14px 22px; font-size: 14px; line-height: 1.7; color: var(--color-text); }
.tool-info li { margin-bottom: 4px; }
.tool-info code { background: #f3f4f6; padding: 2px 5px; border-radius: 4px; font-size: 12px; font-family: Consolas,Monaco,'Courier New',monospace; color: #be185d; }
.tool-info .info-tip { padding: 10px 14px; background: #eff6ff; border-radius: 8px; border-left: 4px solid var(--color-primary); font-size: 13px; line-height: 1.6; color: var(--color-text); margin-bottom: 10px; }

/* Info bar */
.info-bar {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 6px;
  padding: 8px 14px; margin-bottom: 10px;
  background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: 10px;
  font-size: 11px;
}
.info-item { display: flex; flex-direction: column; gap: 1px; }
.info-item .il { color: var(--color-muted); font-size: 10px; }
.info-item .iv { color: var(--color-text); font-weight: 600; font-size: 12px; }

/* Responsive */
@media (max-width: 900px) {
  .tool-layout { grid-template-columns: 1fr; }
  .tb-row { flex-direction: column; align-items: stretch; }
  .tb-sep { display: none; }
  .panel-body pre { font-size: 5px; }
}
@media (max-width: 600px) {
  .tool-container { padding: 12px; }
  .tool-header h1 { font-size: 24px; }
  .tb-select { max-width: 100px; }
}