/* 文本格式化工具 */
.txtf-container { display: grid; grid-template-columns: 1fr 300px; gap: 20px; align-items: start; max-width: 1180px; margin: 0 auto; }
.txtf-main { background: var(--bg); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 22px; }
.txtf-toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.txtf-toolbar .btn { justify-content: center; }
.txtf-tip { font-size: .78rem; color: var(--muted); margin-left: auto; }

.txtf-textarea { width: 100%; min-height: 420px; resize: vertical; padding: 14px 16px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); color: var(--ink); font-family: "SFMono-Regular", Consolas, monospace; font-size: .86rem; line-height: 1.7; box-sizing: border-box; }
.txtf-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.txtf-stats { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 12px; font-size: .8rem; color: var(--muted); }
.txtf-stat-item { display: inline-flex; align-items: center; gap: 5px; }
.txtf-stat-item i { color: var(--accent); }
.txtf-stat-item strong { color: var(--ink); }

.txtf-sidebar { display: flex; flex-direction: column; gap: 14px; }
.txtf-section { background: var(--bg); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 16px; }
.txtf-section-title { display: flex; align-items: center; gap: 6px; font-size: .92rem; margin: 0 0 10px; color: var(--ink); }
.txtf-section-title i { color: var(--accent); }
.txtf-btn-group { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.txtf-btn-group-horizontal { grid-template-columns: 1fr 1fr; }

.txtf-btn { display: inline-flex; align-items: center; justify-content: center; gap: 5px; padding: 8px 10px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); color: var(--ink); font-size: .82rem; cursor: pointer; transition: all .15s ease; }
.txtf-btn:hover { border-color: var(--accent); color: var(--accent); }
.txtf-btn i { font-size: .9rem; }
.txtf-btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.txtf-btn-primary:hover { background: #35a171; color: #fff; }
.txtf-btn-secondary { border-color: var(--accent); color: var(--accent); }
.txtf-btn-secondary:hover { background: var(--accent-soft); }

.txtf-form-group { margin-bottom: 8px; }
.txtf-input { width: 100%; padding: 9px 12px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); color: var(--ink); font-size: .84rem; box-sizing: border-box; }
.txtf-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.txtf-form-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.txtf-checkbox { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; cursor: pointer; color: var(--ink); }
.txtf-checkbox input { accent-color: var(--accent); }

.txtf-toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-20px); opacity: 0; transition: all .3s ease; padding: 10px 20px; border-radius: var(--radius-sm); color: #fff; font-size: .85rem; z-index: 2000; pointer-events: none; box-shadow: 0 6px 20px rgba(0,0,0,.2); animation: txtfToastIn 2.2s forwards; }
@keyframes txtfToastIn { 0% { opacity: 0; transform: translateX(-50%) translateY(-20px); } 12% { opacity: 1; transform: translateX(-50%) translateY(0); } 85% { opacity: 1; } 100% { opacity: 0; } }
.txtf-toast-success { background: #059669; }
.txtf-toast-error { background: #dc2626; }
.txtf-toast-warning { background: #d97706; }

@media (max-width: 900px) {
  .txtf-container { grid-template-columns: 1fr; }
  .txtf-tip { margin-left: 0; width: 100%; }
}