/* 隐藏文字图生成器（上下布局） */
.htext-stack { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
.htext-panel { background: var(--bg); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 20px; min-width: 0; }
.htext-section { margin-bottom: 18px; }
.htext-section:last-child { margin-bottom: 0; }
.htext-section h3 { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: .95rem; margin: 0 0 12px; }
.htext-section h3 > span:first-child { display: inline-flex; align-items: center; gap: 6px; }
.htext-section h3 i { color: var(--accent); }

/* 主操作行：两行文字 + 生成按钮 */
.htext-main-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; gap: 14px; align-items: end; margin-bottom: 14px; }
.htext-main-row .htext-form-group { margin-bottom: 0; }
.htext-gen-btn { height: 42px; padding: 0 28px; white-space: nowrap; font-size: .95rem; }

/* 快速填入 */
.htext-quick-row { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 16px; }
.htext-quick-label { display: inline-flex; align-items: center; gap: 4px; font-size: .82rem; color: var(--muted); flex-shrink: 0; padding-top: 7px; }
.htext-quick-label i { color: var(--accent); font-size: .95rem; }
.htext-template-list { display: flex; flex-wrap: wrap; gap: 8px; }
.htext-template-btn { padding: 7px 13px; border: 1px solid var(--rule); border-radius: 999px; background: var(--bg2); color: var(--muted); font-size: .84rem; cursor: pointer; transition: all .15s ease; }
.htext-template-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* 高级参数折叠面板 */
.htext-advanced { border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); margin-bottom: 18px; }
.htext-advanced summary { display: flex; align-items: center; gap: 10px; padding: 11px 14px; cursor: pointer; font-size: .9rem; font-weight: 600; color: var(--ink); list-style: none; user-select: none; }
.htext-advanced summary::-webkit-details-marker { display: none; }
.htext-advanced summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: var(--radius-sm); }
.htext-advanced-title { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; }
.htext-advanced-title i { color: var(--accent); }
.htext-advanced-hint { flex: 1; font-size: .78rem; font-weight: 400; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.htext-advanced-chevron { color: var(--muted); font-size: 1rem; flex-shrink: 0; transition: transform .2s ease; }
.htext-advanced[open] .htext-advanced-chevron { transform: rotate(180deg); }
.htext-advanced[open] summary { border-bottom: 1px solid var(--rule); }
.htext-slider-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 4px 24px; padding: 12px 14px 14px; }
.htext-overlay-row { display: flex; align-items: end; gap: 20px; grid-column: 1 / -1; }
.htext-overlay-row .htext-switch-row { padding: 0; flex-shrink: 0; }
.htext-overlay-row .htext-form-group { margin-bottom: 0; flex: 1; max-width: 240px; }

.htext-form-group { margin-bottom: 14px; }
.htext-form-group > label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 6px; }
.htext-form-group input, .htext-form-group select { width: 100%; padding: 9px 12px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg); color: var(--ink); font-size: .9rem; box-sizing: border-box; }
.htext-form-group input:focus, .htext-form-group select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.htext-slider-row { margin-bottom: 14px; }
.htext-slider-row > label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 6px; }
.htext-slider-row > label span { color: var(--accent); font-weight: 600; }
.htext-slider-row input[type="range"] { width: 100%; accent-color: var(--accent); }
.htext-slider-hint { font-size: .75rem; color: var(--muted); margin: 4px 0 0; }

.htext-switch-row { display: flex; align-items: center; justify-content: space-between; padding: 6px 0; }
.htext-switch-row > label:first-child { font-size: .85rem; color: var(--muted); }
.htext-switch { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.htext-switch input { opacity: 0; width: 0; height: 0; }
.htext-switch-slider { position: absolute; inset: 0; background: var(--rule); border-radius: 999px; cursor: pointer; transition: background .2s ease; }
.htext-switch-slider::before { content: ''; position: absolute; width: 18px; height: 18px; left: 3px; top: 3px; background: var(--bg); border-radius: 50%; transition: transform .2s ease; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.htext-switch input:checked + .htext-switch-slider { background: var(--accent); }
.htext-switch input:checked + .htext-switch-slider::before { transform: translateX(20px); }
.htext-switch input:focus-visible + .htext-switch-slider { box-shadow: 0 0 0 3px var(--accent-soft); }

/* 图案 / 配色紧凑网格 */
.htext-mini-btn { display: inline-flex; align-items: center; gap: 4px; padding: 5px 12px; border: 1px solid var(--rule); border-radius: 999px; background: var(--bg2); color: var(--muted); font-size: .8rem; cursor: pointer; transition: all .15s ease; }
.htext-mini-btn i { font-size: .95rem; }
.htext-mini-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.htext-mini-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.htext-pattern-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(82px, 1fr)); gap: 8px; }
.htext-pattern-item { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 6px 4px; border: 2px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); cursor: pointer; transition: all .15s ease; min-width: 0; }
.htext-pattern-item canvas, .htext-pattern-item img { width: 48px; height: 48px; border-radius: 4px; display: block; object-fit: cover; }
.htext-pattern-name { font-size: .68rem; color: var(--muted); text-align: center; line-height: 1.2; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.htext-pattern-item:hover { border-color: var(--accent); }
.htext-pattern-item.active { border-color: var(--accent); background: var(--accent-soft); }
.htext-pattern-item.active .htext-pattern-name { color: var(--accent); font-weight: 600; }

.htext-color-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); gap: 8px; }
.htext-color-item { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 6px 4px; border: 2px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); cursor: pointer; transition: all .15s ease; min-width: 0; }
.htext-color-preview { width: 100%; aspect-ratio: 1; border-radius: 4px; display: block; }
.htext-color-name { font-size: .68rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.htext-color-item:hover { border-color: var(--accent); }
.htext-color-item.active { border-color: var(--accent); background: var(--accent-soft); }
.htext-color-item.active .htext-color-name { color: var(--accent); font-weight: 600; }

.htext-actions { display: flex; gap: 10px; }
.htext-actions .btn { flex: 1; justify-content: center; }

/* 结果面板（下方，居中限宽） */
.htext-result-panel { scroll-margin-top: 76px; }
.htext-preview-box { min-height: 340px; max-width: 560px; margin: 0 auto; display: flex; align-items: center; justify-content: center; background: var(--bg2); border: 1px dashed var(--rule); border-radius: var(--radius-sm); padding: 20px; }
.htext-preview-box canvas { max-width: 100%; max-height: 480px; border-radius: 8px; cursor: zoom-in; }
.htext-placeholder { text-align: center; color: var(--muted); }
.htext-placeholder i { font-size: 3rem; color: var(--accent); display: block; margin-bottom: 12px; opacity: .7; }
.htext-placeholder-sub { font-size: .8rem; opacity: .8; margin-top: 4px; }
.htext-result-actions { max-width: 560px; margin: 14px auto 0; }

.htext-error { margin: 12px auto 0; max-width: 560px; padding: 10px 12px; border-radius: var(--radius-sm); border: 1px solid #fca5a5; background: #fef2f2; color: #b91c1c; font-size: .85rem; display: flex; align-items: center; gap: 6px; }
.htext-error::before { content: '\ea05'; font-family: 'tabler-icons'; font-size: 1rem; flex-shrink: 0; }
[data-theme="dark"] .htext-error { border-color: #7f1d1d; background: #450a0a; color: #fca5a5; }

.htext-result-tip-trigger { font-size: .8rem; color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; gap: 4px; }
.htext-result-tip-trigger:hover { color: var(--accent); }
.htext-result-tip-trigger:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.htext-tip { margin: 12px auto 0; max-width: 560px; padding: 10px 14px; background: var(--accent-soft); border-radius: var(--radius-sm); font-size: .82rem; color: var(--muted); }

.htext-history-wrap { margin-top: 18px; }
.htext-history-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.htext-history-empty { grid-column: 1 / -1; color: var(--muted); font-size: .84rem; text-align: center; padding: 18px 0; }
.htext-history-item { display: flex; flex-direction: column; gap: 4px; padding: 6px; border: 1px solid var(--rule); border-radius: var(--radius-sm); background: var(--bg2); cursor: pointer; transition: all .15s ease; min-width: 0; }
.htext-history-item img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 4px; display: block; }
.htext-history-info { font-size: .72rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.htext-history-item:hover { border-color: var(--accent); }

.htext-demo-section { margin-top: 28px; }
.htext-demo-section h3 { display: flex; align-items: center; gap: 6px; font-size: 1.05rem; margin: 0 0 4px; }
.htext-demo-section h3 i { color: var(--accent); }
.htext-demo-sub { color: var(--muted); font-size: .85rem; margin: 0 0 14px; }
.htext-demo-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.htext-demo-item { padding: 0; border: 1px solid var(--rule); border-radius: var(--radius-sm); overflow: hidden; cursor: zoom-in; background: var(--bg2); transition: all .2s ease; display: block; }
.htext-demo-item img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; }
.htext-demo-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); border-color: rgba(66,185,131,.45); }

.htext-modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; }
.htext-modal[hidden] { display: none; }
.htext-modal-backdrop { position: absolute; inset: 0; background: rgba(20, 28, 38, .78); backdrop-filter: blur(4px); }
.htext-modal-body { position: relative; max-width: min(92vw, 800px); max-height: 88vh; display: flex; flex-direction: column; gap: 12px; }
.htext-modal-close { position: absolute; top: -44px; right: 0; width: 36px; height: 36px; border: none; border-radius: 50%; background: rgba(255,255,255,.14); color: #fff; font-size: 1.1rem; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: background .15s ease; }
.htext-modal-close:hover { background: rgba(255,255,255,.28); }
.htext-modal-body canvas { max-width: 92vw; max-height: 78vh; border-radius: 8px; box-shadow: 0 18px 60px rgba(0,0,0,.5); }
.htext-modal-actions { display: flex; justify-content: center; }
.htext-modal-actions .btn { min-width: 180px; justify-content: center; }

@media (max-width: 720px) {
  .htext-main-row { grid-template-columns: minmax(0, 1fr); }
  .htext-gen-btn { width: 100%; height: 46px; }
  .htext-slider-grid { grid-template-columns: minmax(0, 1fr); }
  .htext-overlay-row { flex-direction: column; align-items: stretch; gap: 10px; }
  .htext-overlay-row .htext-form-group { max-width: none; }
  .htext-advanced-hint { display: none; }
  .htext-pattern-grid { grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); }
  .htext-color-grid { grid-template-columns: repeat(auto-fill, minmax(64px, 1fr)); }
  .htext-history-list { grid-template-columns: repeat(3, 1fr); }
  .htext-demo-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 剩余可生成次数横幅（样式已迁移至全局 css/app.css，所有工具页共用） */

/* 锁定态：功能选项完整展示，但不可操作 */
.tool-locked .htext-form-group input,
.tool-locked .htext-form-group select,
.tool-locked .htext-slider-row input[type="range"],
.tool-locked .htext-switch { pointer-events: none; opacity: .55; }
.tool-locked .htext-template-btn,
.tool-locked .htext-pattern-item,
.tool-locked .htext-color-item,
.tool-locked .htext-mini-btn { pointer-events: none; opacity: .55; cursor: not-allowed; }
.tool-locked .htext-gen-btn,
.tool-locked .htext-actions .btn { pointer-events: none; opacity: .5; cursor: not-allowed; filter: grayscale(.35); }