/* ============================================================================
 * shared/css/shared.css — 底座公共样式（PC / 移动共用）
 * 设计令牌随 html[data-theme] 切换；不含任何「只读 / 降级」态样式。
 * ========================================================================== */
:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1f232c;
  --text: #e6e9ef;
  --text-2: #9aa3b2;
  --primary: #3b82f6;
  --primary-2: #1d4ed8;
  --border: #2a2f3a;
  --danger: #ef4444;
  --ok: #22c55e;
  --radius: 8px;
  --shadow: 0 8px 24px rgba(0,0,0,.35);
}
html[data-theme="light"] {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --panel-2: #eef1f6;
  --text: #1b1f27;
  --text-2: #5b6573;
  --border: #e2e6ee;
  --shadow: 0 8px 24px rgba(20,30,60,.10);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: system-ui, "Segoe UI", "Microsoft YaHei", sans-serif; font-size: 14px;
}
code { font-family: ui-monospace, Consolas, monospace; font-size: 12px; background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }
a { color: inherit; text-decoration: none; }

/* ---------------- 按钮 ---------------- */
.lesu-btn {
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  padding: 7px 14px; border-radius: var(--radius); cursor: pointer; font-size: 13px;
  transition: .15s; white-space: nowrap;
}
.lesu-btn:hover { border-color: var(--primary); color: var(--primary); }
.lesu-btn--primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.lesu-btn--primary:hover { background: var(--primary-2); border-color: var(--primary-2); color: #fff; }
.lesu-btn--danger { color: var(--danger); }
.lesu-btn--danger:hover { background: var(--danger); border-color: var(--danger); color: #fff; }
.lesu-btn--xs { padding: 4px 9px; font-size: 12px; }
.lesu-btn--block { width: 100%; padding: 10px; }
.lesu-btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------------- 表单 ---------------- */
.lesu-input, .lesu-form input, .lesu-form textarea, .lesu-form select {
  padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel); color: var(--text); font-size: 13px; font-family: inherit; width: 100%;
}
.lesu-input { width: 220px; }
.lesu-form { display: flex; flex-direction: column; gap: 12px; }
.lesu-form label { display: flex; flex-direction: column; gap: 5px; }
.lesu-form label > span { font-size: 12px; color: var(--text-2); }
.lesu-form .req { color: var(--danger); font-style: normal; }
.lesu-checklist { display: flex; flex-wrap: wrap; gap: 8px; max-height: 240px; overflow: auto; padding: 8px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); }
.lesu-chk { flex-direction: row !important; align-items: center; gap: 6px !important; background: var(--panel-2); padding: 6px 10px; border-radius: 6px; cursor: pointer; font-size: 12px; }
.lesu-chk input { width: auto !important; }
.lesu-row { display: flex; gap: 8px; margin-top: 8px; }

/* ---------------- 页面骨架 ---------------- */
.lesu-page { padding: 0; }
.lesu-page__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.lesu-page__head h1 { font-size: 19px; margin: 0; font-weight: 600; }
.lesu-page__act { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.lesu-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 14px; }
.lesu-card h3 { margin: 0 0 12px; font-size: 14px; font-weight: 600; }
.lesu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.lesu-note { color: var(--text-2); font-size: 12px; margin: 8px 0 0; }
.lesu-tip { background: rgba(59,130,246,.1); border: 1px solid rgba(59,130,246,.3); color: var(--text); padding: 10px 14px; border-radius: var(--radius); font-size: 12.5px; margin-bottom: 14px; line-height: 1.7; }
.lesu-proj-tag { font-size: 12px; color: var(--text-2); margin-bottom: 12px; }
.lesu-empty { text-align: center; padding: 60px 20px; }
.lesu-empty h2 { font-size: 16px; margin: 0 0 8px; }
.lesu-pre { background: var(--panel-2); border-radius: 6px; padding: 12px; font-family: ui-monospace, Consolas, monospace; font-size: 12px; white-space: pre-wrap; word-break: break-all; }
.lesu-kv { display: flex; justify-content: space-between; gap: 12px; margin: 7px 0; font-size: 13px; }
.lesu-kv > span { color: var(--text-2); flex: none; }
.lesu-kv > b { text-align: right; word-break: break-all; font-weight: 500; }
.lesu-kv .ok { color: var(--ok); }
.lesu-counts { display: flex; flex-wrap: wrap; gap: 10px; }
.lesu-count { flex: 1 1 70px; background: var(--panel-2); border-radius: 6px; padding: 10px; text-align: center; }
.lesu-count b { display: block; font-size: 20px; }
.lesu-count span { font-size: 11px; color: var(--text-2); }
.lesu-terms { margin-top: 10px; padding: 10px; background: var(--panel-2); border-radius: 6px; white-space: pre-wrap; font-size: 13px; line-height: 1.7; }

/* ---------------- 表格 ---------------- */
.lesu-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.lesu-table th { text-align: left; padding: 9px 10px; color: var(--text-2); font-weight: 500; font-size: 12px; border-bottom: 1px solid var(--border); }
.lesu-table td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; word-break: break-word; }
.lesu-table tbody tr:hover { background: var(--panel-2); }
.lesu-td-empty { text-align: center; color: var(--text-2); padding: 30px !important; }
.lesu-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 11px; background: var(--panel-2); border: 1px solid var(--border); }
.tag--ok { color: var(--ok); border-color: rgba(34,197,94,.4); }

/* ---------------- 弹窗 ---------------- */
.lesu-mask { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: flex; align-items: center; justify-content: center; z-index: 900; padding: 20px; }
.lesu-dialog { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; width: 100%; box-shadow: var(--shadow); max-height: 88vh; display: flex; flex-direction: column; }
.lesu-dialog__hd { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--border); font-weight: 600; }
.lesu-dialog__bd { padding: 16px; overflow: auto; }
.lesu-dialog__ft { padding: 12px 16px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }
.lesu-x { background: none; border: none; color: var(--text-2); font-size: 20px; cursor: pointer; line-height: 1; }

/* ---------------- Toast ---------------- */
.lesu-toast {
  position: fixed; top: -60px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  padding: 10px 18px; border-radius: 20px; font-size: 13px; z-index: 1000;
  transition: top .25s; box-shadow: var(--shadow); max-width: 80vw;
}
.lesu-toast.show { top: 16px; }
.lesu-toast--ok { border-color: var(--ok); color: var(--ok); }
.lesu-toast--err { border-color: var(--danger); color: var(--danger); }

/* ---------------- 登录 ---------------- */
.lesu-login { max-width: 340px; margin: 8vh auto; text-align: center; }
.lesu-login__logo { width: 56px; height: 56px; line-height: 56px; margin: 0 auto 14px; border-radius: 14px; background: var(--primary); color: #fff; font-weight: 700; letter-spacing: 1px; }
.lesu-login h1 { font-size: 18px; margin: 0 0 6px; }
.lesu-login .lesu-form { margin-top: 20px; text-align: left; }
.lesu-login__tip { margin-top: 18px; }

/* ---------------- 文档 / 预览 ---------------- */
.lesu-split { display: grid; grid-template-columns: 300px 1fr; gap: 14px; align-items: start; }
.lesu-split__left, .lesu-split__right { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.lesu-split__left { padding: 10px; max-height: 72vh; overflow: auto; }
.lesu-doc { padding: 10px; border-radius: 6px; cursor: pointer; display: flex; flex-direction: column; gap: 3px; position: relative; }
.lesu-doc:hover { background: var(--panel-2); }
.lesu-doc.active { background: var(--panel-2); box-shadow: inset 2px 0 0 var(--primary); }
.lesu-doc .lesu-note { margin: 0; }
.lesu-doc__act { display: flex; gap: 5px; margin-top: 5px; }
.lesu-preview__bar { display: flex; align-items: center; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--border); gap: 10px; }
.lesu-preview__title { font-weight: 600; font-size: 13px; }
.lesu-tabs { display: flex; gap: 4px; }
.lesu-tab { border: 1px solid var(--border); background: var(--panel-2); color: var(--text-2); padding: 4px 12px; border-radius: 20px; cursor: pointer; font-size: 12px; }
.lesu-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.lesu-preview { min-height: 60vh; background: var(--panel); }
.lesu-preview__frame { width: 100%; height: 60vh; border: 0; background: #fff; display: block; }
.lesu-tool { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 14px; }
.lesu-tool__frame { width: 100%; height: 380px; border: 0; display: block; background: #fff; }

/* ---------------- 工具市场（卡片化） ---------------- */
.lesu-tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin-bottom: 14px; }
.lesu-tool-card { display: flex; align-items: center; gap: 14px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; cursor: pointer; transition: border-color .15s, transform .15s, box-shadow .15s; }
.lesu-tool-card:hover, .lesu-tool-card:focus { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-2px); outline: none; }
.lesu-tool-card__icon { width: 46px; height: 46px; flex-shrink: 0; border-radius: 12px; background: var(--panel-2); display: flex; align-items: center; justify-content: center; font-size: 24px; }
.lesu-tool-card__body { flex: 1; min-width: 0; }
.lesu-tool-card__title { font-size: 14px; font-weight: 700; }
.lesu-tool-card__en { font-size: 11px; font-weight: 500; color: var(--text-2); margin-left: 4px; }
.lesu-tool-card__desc { font-size: 12px; color: var(--text-2); line-height: 1.6; margin-top: 3px; }
.lesu-tool-card__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.lesu-chip-sm { font-size: 11px; color: var(--text-2); background: var(--panel-2); border: 1px solid var(--border); padding: 2px 8px; border-radius: 999px; }
.lesu-tool-card__go { color: var(--primary); font-weight: 600; font-size: 13px; flex-shrink: 0; }

/* 工具弹层 */
.lesu-tool-modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 24px; }
.lesu-tool-modal[hidden] { display: none; }
.lesu-tool-modal__mask { position: absolute; inset: 0; background: rgba(0,0,0,.55); }
.lesu-tool-modal__panel { position: relative; width: min(1100px, 96vw); height: min(86vh, 900px); background: var(--panel); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); display: flex; flex-direction: column; overflow: hidden; }
.lesu-tool-modal__head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 700; font-size: 14px; }
.lesu-tool-modal__head .lesu-tool-modal__actions { margin-left: auto; display: flex; gap: 8px; }
.lesu-tool-modal__body { flex: 1; min-height: 0; background: #fff; overflow: hidden; }
.lesu-tool-modal__body .lesu-tool__frame { height: 100%; }