/* 文本编码转换工具 */
.tenc-container { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 20px; align-items: start; max-width: 1120px; margin: 0 auto; }
.tenc-sidebar { background: var(--bg); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 22px; display: flex; flex-direction: column; gap: 18px; }
.tenc-section h3 { display: flex; align-items: center; gap: 6px; font-size: .95rem; margin: 0 0 12px; }
.tenc-section h3 i { color: var(--accent); }

.tenc-upload { border: 2px dashed var(--rule); border-radius: var(--radius-sm); padding: 22px 14px; text-align: center; cursor: pointer; transition: all .15s ease; margin-bottom: 12px; }
.tenc-upload i { font-size: 28px; color: var(--accent); display: block; margin-bottom: 6px; }
.tenc-upload p { margin: 0 0 4px; font-size: .86rem; color: var(--ink); }
.tenc-upload .tenc-hint { font-size: .74rem; color: var(--muted); }
.tenc-upload:hover, .tenc-upload.dragover { border-color: var(--accent); background: var(--accent-soft); }

.tenc-textarea-wrap textarea { min-height: 180px; }
.tenc-textarea { width: 100%; resize: vertical; padding: 12px 14px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); color: var(--ink); font-family: "SFMono-Regular", Consolas, monospace; font-size: .84rem; line-height: 1.6; box-sizing: border-box; }
.tenc-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.tenc-form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.tenc-form-row > label { font-size: .82rem; color: var(--muted); }
.tenc-select { padding: 9px 12px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg); color: var(--ink); font-size: .88rem; }
.tenc-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.tenc-detected { font-size: .8rem; color: var(--accent); background: var(--accent-soft); padding: 6px 10px; border-radius: var(--radius-sm); }

.tenc-actions { display: flex; flex-direction: column; gap: 8px; }
.tenc-actions .btn { width: 100%; justify-content: center; }

.tenc-main { display: flex; flex-direction: column; gap: 20px; }
.tenc-result-area { background: var(--bg); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 20px; }
.tenc-result-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.tenc-result-title { display: flex; align-items: center; gap: 6px; font-size: .95rem; font-weight: 600; color: var(--ink); }
.tenc-result-title i { color: var(--accent); }
.tenc-result-tools { display: flex; align-items: center; gap: 10px; }
.tenc-result-meta { font-size: .78rem; color: var(--muted); }
.tenc-result-textarea { width: 100%; min-height: 320px; resize: vertical; padding: 12px 14px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); color: var(--ink); font-family: "SFMono-Regular", Consolas, monospace; font-size: .84rem; line-height: 1.6; box-sizing: border-box; }
.tenc-result-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.tenc-tips { background: var(--bg); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 20px 24px; }
.tenc-tips h4 { display: flex; align-items: center; gap: 6px; font-size: 1rem; margin: 0 0 12px; color: var(--ink); }
.tenc-tips h4 i { color: var(--accent); }
.tenc-tip-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.tenc-tip-item strong { display: block; font-size: .86rem; color: var(--ink); margin-bottom: 3px; }
.tenc-tip-item p { margin: 0; color: var(--muted); font-size: .8rem; line-height: 1.6; }

@media (max-width: 900px) {
  .tenc-container { grid-template-columns: 1fr; }
  .tenc-tip-grid { grid-template-columns: 1fr; }
}