/* ============================================================================
   LHEAI 布局与组件
   基准字号 16px（比 DSH 的 14px 整体 +2），控件尺寸同步放大。
   ============================================================================ */

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--l-font);
  font-size: 16px;
  line-height: 25px;
  color: var(--l-label-primary);
  background: var(--l-bg-base);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--l-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: var(--l-font-code); }
.hide { display: none !important; }
.sp { flex: 1 1 auto; }
.mut { color: var(--l-label-tertiary); }
.dim { color: var(--l-label-secondary); }
.cap { font-size: 14px; line-height: 21px; color: var(--l-label-caption); }
.nowrap { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #0000001f; border-radius: 6px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: #00000033; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #ffffff26; background-clip: content-box; }

/* ---------------------------------------------------------------- 启动 / 登录 */
.boot { height: 100%; display: grid; place-items: center; color: var(--l-label-tertiary); font-size: 14px; }
.login-wrap {
  height: 100%; display: grid; place-items: center; padding: 24px;
  background:
    radial-gradient(900px 480px at 50% -10%, var(--l-accent-soft), transparent 70%),
    var(--l-bg-base);
}
.login-card {
  width: 100%; max-width: 420px; background: var(--l-bg-layer-1);
  border: 1px solid var(--l-border-l2); border-radius: var(--l-radius-xl);
  box-shadow: var(--l-shadow-3); padding: 32px;
}
.login-card h1 { font-size: 22px; line-height: 30px; font-weight: 700; margin: 0 0 6px; }
.login-card .sub { font-size: 15px; color: var(--l-label-tertiary); margin-bottom: 22px; }
.brand-row { display: flex; align-items: center; gap: 11px; margin-bottom: 24px; }

/* ---------------------------------------------------------------- 外壳 */
.shell { display: grid; grid-template-columns: var(--l-sidebar-w) 1fr; height: 100%; }

.sidebar {
  background: var(--l-bg-sidebar); border-right: 1px solid var(--l-border-l1);
  display: flex; flex-direction: column; min-height: 0;
}
.sidebar-head { padding: 18px 16px 14px; display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 10px; flex: none;
  background: var(--l-accent-grad); color: #fff;
  display: grid; place-items: center; font-size: 15px; font-weight: 700;
  box-shadow: 0 2px 8px #4176e640;
}
.brand-name { font-size: 16px; font-weight: 700; letter-spacing: .01em; }
.brand-tag { font-size: 13px; color: var(--l-label-caption); }

.nav { flex: 1 1 auto; overflow-y: auto; padding: 6px 10px 14px; }
.nav-group-label {
  font-size: 13px; line-height: 19px; color: var(--l-label-caption);
  padding: 14px 10px 5px; letter-spacing: .04em;
}
.nav-item {
  position: relative;
  display: flex; align-items: center; gap: 10px; width: 100%;
  height: 36px; padding: 0 11px; margin: 2px 0;
  border: 0; border-radius: var(--l-radius-m); background: none; cursor: pointer;
  color: var(--l-label-secondary); font: inherit; font-size: 15px; text-align: left;
  transition: background var(--l-dur-fast) var(--l-ease), color var(--l-dur-fast) var(--l-ease);
}
.nav-item:hover { background: var(--l-bg-hover); color: var(--l-label-primary); }
.nav-item.active {
  background: var(--l-accent-soft); color: var(--l-accent); font-weight: 600;
}
.nav-item.active::before {
  content: ""; position: absolute; left: -10px; top: 8px; bottom: 8px; width: 3px;
  border-radius: 0 3px 3px 0; background: var(--l-accent);
}
.nav-item.active .nav-icon { color: var(--l-accent); }
.nav-icon { width: 18px; height: 18px; flex: none; color: var(--l-label-tertiary); display: grid; place-items: center; }
.nav-sub { overflow: hidden; margin-left: 10px; border-left: 1px solid var(--l-border-l2); padding-left: 6px; }
.nav-sub .nav-item { padding-left: 12px; height: 34px; font-size: 15px; }
.nav-sub .nav-item.active::before { display: none; }
.nav-badge {
  margin-left: auto; font-size: 13px; line-height: 20px; padding: 0 8px;
  border-radius: var(--l-radius-pill); background: var(--l-accent-soft); color: var(--l-accent);
}
.nav-badge.warn { background: var(--l-warn-soft); color: var(--l-warn-label); }
.nav-badge.err { background: var(--l-error-soft); color: var(--l-error); }
.chev { margin-left: auto; transition: transform var(--l-dur) var(--l-ease); color: var(--l-label-caption); }
.chev.open { transform: rotate(90deg); }

.sidebar-foot { border-top: 1px solid var(--l-border-l1); padding: 10px; }
.agent-pill {
  display: flex; align-items: center; gap: 8px; padding: 9px 11px; border-radius: var(--l-radius-m);
  font-size: 14px; color: var(--l-label-secondary); background: var(--l-bg-module);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--l-label-caption); flex: none; }
.dot.on { background: var(--l-success); box-shadow: 0 0 0 4px #22c55e26; }
.dot.off { background: var(--l-error); box-shadow: 0 0 0 4px #ec131326; }
.dot.busy { background: var(--l-warn); box-shadow: 0 0 0 4px #f59e0b26; }

.user-row {
  display: flex; align-items: center; gap: 9px; padding: 9px 11px; margin-top: 5px;
  border-radius: var(--l-radius-m); cursor: pointer;
}
.user-row:hover { background: var(--l-bg-hover); }
.avatar {
  width: 28px; height: 28px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: var(--l-accent-grad); color: #fff; font-size: 13px; font-weight: 600;
}

/* ---------------------------------------------------------------- 主区 */
.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--l-bg-base); }
.topbar {
  height: var(--l-topbar-h); flex: none; display: flex; align-items: center; gap: 12px;
  padding: 0 20px; border-bottom: 1px solid var(--l-border-l1);
  background: linear-gradient(180deg, var(--l-accent-soft) 0%, transparent 320%);
}
.topbar h2 { font-size: 17px; font-weight: 700; margin: 0; letter-spacing: -.01em; }
.topbar .sub { font-size: 14px; color: var(--l-label-tertiary); }
.content { flex: 1 1 auto; overflow-y: auto; min-height: 0; background-image: var(--l-glow-top); background-repeat: no-repeat; }
.page { max-width: 1200px; margin: 0 auto; padding: 22px 24px 70px; }
.page.narrow { max-width: 900px; }

/* ---------------------------------------------------------------- 卡片 */
.card {
  background: var(--l-bg-layer-1); border: 1px solid var(--l-border-l2);
  border-radius: var(--l-radius-l); padding: 18px;
  transition: box-shadow var(--l-dur) var(--l-ease), border-color var(--l-dur) var(--l-ease);
}
.card + .card { margin-top: 16px; }
.card-head { display: flex; align-items: center; gap: 11px; margin-bottom: 15px; }
.card-head h3 { font-size: 15px; font-weight: 700; margin: 0; }
.grid { display: grid; gap: 16px; }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1060px) { .grid.c3, .grid.c4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } }

/* 指标卡 */
.metric {
  position: relative; overflow: hidden;
  background: var(--l-bg-layer-1); border: 1px solid var(--l-border-l2);
  border-radius: var(--l-radius-l); padding: 16px 18px;
  transition: box-shadow var(--l-dur) var(--l-ease), transform var(--l-dur) var(--l-ease);
}
.metric:hover { box-shadow: var(--l-shadow-2); transform: translateY(-1px); }
.metric .k { font-size: 14px; color: var(--l-label-tertiary); display: flex; align-items: center; gap: 8px; }
.metric .v { font-size: 30px; line-height: 40px; font-weight: 700; margin-top: 8px; letter-spacing: -.02em; }
.metric .v.empty { color: var(--l-label-caption); font-size: 24px; font-weight: 600; }
.metric .d { font-size: 14px; color: var(--l-label-tertiary); margin-top: 3px; }
.metric-ico {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; flex: none;
  background: var(--l-tint-blue); color: var(--l-accent);
}
.metric-ico.ok { background: var(--l-tint-green); color: #16a34a; }
.metric-ico.warn { background: var(--l-tint-amber); color: var(--l-warn-label); }
.metric-ico.violet { background: var(--l-tint-violet); color: var(--l-violet); }
[data-theme="dark"] .metric-ico.ok { color: var(--l-success); }

/* ---------------------------------------------------------------- 表单 */
label.f { display: block; font-size: 14px; color: var(--l-label-tertiary); margin: 0 0 6px; }
input, textarea, select {
  width: 100%; font: inherit; font-size: 15px; color: var(--l-label-primary);
  background: var(--l-bg-input); border: 1px solid var(--l-border-l3);
  border-radius: var(--l-radius-m); padding: 8px 12px; outline: none;
  transition: border-color var(--l-dur-fast) var(--l-ease), box-shadow var(--l-dur-fast) var(--l-ease);
}
input:focus, textarea:focus, select:focus { border-color: var(--l-accent); box-shadow: 0 0 0 4px var(--l-accent-soft); }
input::placeholder, textarea::placeholder { color: var(--l-label-caption); }
textarea { resize: vertical; min-height: 84px; line-height: 25px; }
select { appearance: none; background-image: none; cursor: pointer; }
.field + .field { margin-top: 14px; }
.form-row { display: flex; gap: 14px; flex-wrap: wrap; }
.form-row > .field { flex: 1 1 190px; margin-top: 0; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 36px; padding: 0 16px; border: 1px solid transparent; border-radius: var(--l-radius-m);
  background: var(--l-accent-grad); color: #fff;
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
  box-shadow: 0 1px 3px #4176e633;
  transition: background var(--l-dur-fast) var(--l-ease), opacity var(--l-dur-fast) var(--l-ease),
              transform var(--l-dur-fast) var(--l-ease), box-shadow var(--l-dur-fast) var(--l-ease);
}
.btn:hover { background: var(--l-accent-grad-hover); box-shadow: 0 3px 10px #4176e640; transform: translateY(-1px); }
.btn:active { transform: none; }
.btn:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; transform: none; }
.btn.sec { background: var(--l-bg-module); color: var(--l-label-primary); border-color: var(--l-border-l2); box-shadow: none; }
.btn.sec:hover { background: var(--l-bg-hover); box-shadow: none; }
.btn.ghost { background: none; color: var(--l-label-secondary); box-shadow: none; }
.btn.ghost:hover { background: var(--l-bg-hover); color: var(--l-label-primary); box-shadow: none; }
.btn.dark { background: var(--l-brand-fill); color: var(--l-label-inverted); box-shadow: none; }
.btn.dark:hover { background: var(--l-brand-hover); }
.btn.danger { background: var(--l-error); color: #fff; box-shadow: none; }
.btn.sm { height: 30px; padding: 0 12px; font-size: 14px; }
.btn.icon { width: 36px; padding: 0; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ---------------------------------------------------------------- 标签/徽章 */
.tag {
  display: inline-flex; align-items: center; gap: 5px; height: 24px; padding: 0 10px;
  border-radius: var(--l-radius-pill); font-size: 13px; line-height: 1;
  background: var(--l-bg-module); color: var(--l-label-secondary);
}
.tag.blue { background: var(--l-info-soft); color: var(--l-info); }
.tag.green { background: var(--l-success-soft); color: #16a34a; }
.tag.amber { background: var(--l-warn-soft); color: var(--l-warn-label); }
.tag.red { background: var(--l-error-soft); color: var(--l-error); }
.tag.gray { background: var(--l-bg-module); color: var(--l-label-tertiary); }
[data-theme="dark"] .tag.green { color: var(--l-success); }

.status { display: inline-flex; align-items: center; gap: 7px; font-size: 14px; }
.status .dot { width: 7px; height: 7px; }

/* ---------------------------------------------------------------- 表格 */
table.tb { width: 100%; border-collapse: collapse; font-size: 15px; }
table.tb th {
  text-align: left; font-weight: 500; font-size: 14px; color: var(--l-label-tertiary);
  padding: 10px 12px; border-bottom: 1px solid var(--l-border-l2); white-space: nowrap;
}
table.tb td { padding: 12px; border-bottom: 1px solid var(--l-border-l1); vertical-align: top; }
table.tb tr:last-child td { border-bottom: 0; }
table.tb tbody tr { transition: background var(--l-dur-fast) var(--l-ease); }
table.tb tbody tr:hover { background: var(--l-bg-hover); }

/* ---------------------------------------------------------------- 空态 / 提示 */
.empty {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 40px 16px; text-align: center; color: var(--l-label-tertiary); font-size: 15px;
}
.empty .ico { color: var(--l-label-caption); }
.notice {
  display: flex; gap: 10px; align-items: flex-start; padding: 12px 14px;
  border-radius: var(--l-radius-m); font-size: 14.5px; line-height: 21px;
  background: var(--l-warn-soft); color: var(--l-warn-label); border: 1px solid #f59e0b26;
}
.notice.info { background: var(--l-info-soft); color: var(--l-info); border-color: #4176e626; }
.notice .ico { flex: none; margin-top: 2px; }

/* ---------------------------------------------------------------- 对话 */
.chat { display: flex; flex-direction: column; height: 100%; min-height: 0; }
.chat-scroll { flex: 1 1 auto; overflow-y: auto; min-height: 0; }
.chat-inner { max-width: 860px; margin: 0 auto; padding: 26px 24px 18px; display: flex; flex-direction: column; gap: 20px; }
.msg { display: flex; gap: 12px; }
.msg .av {
  width: 30px; height: 30px; border-radius: 50%; flex: none; display: grid; place-items: center;
  font-size: 13px; font-weight: 600; background: var(--l-bg-module); color: var(--l-label-secondary);
}
.msg.user .av { background: var(--l-accent-grad); color: #fff; }
.msg .body { min-width: 0; flex: 1 1 auto; }
.msg .who { font-size: 14px; color: var(--l-label-tertiary); margin-bottom: 5px; }
.bubble {
  background: var(--l-bg-module); border-radius: var(--l-radius-l);
  padding: 12px 15px; font-size: 15.5px; line-height: 25px; white-space: pre-wrap; word-break: break-word;
}
.msg.user .bubble { background: var(--l-accent-soft); color: var(--l-label-primary); }
.msg.agent .bubble { background: transparent; padding: 0; }

.task-card {
  border: 1px solid var(--l-border-l2); border-radius: var(--l-radius-l);
  background: var(--l-bg-layer-1); overflow: hidden;
}
.task-card .tc-head { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-bottom: 1px solid var(--l-border-l1); }
.task-card .tc-title { font-size: 15px; font-weight: 600; }
.tc-steps { max-height: 300px; overflow-y: auto; padding: 8px 14px 12px; }
.tc-step { display: flex; gap: 10px; padding: 6px 0; font-size: 14.5px; line-height: 22px; }
.tc-step .n { flex: none; width: 22px; color: var(--l-label-caption); font-family: var(--l-font-code); font-size: 13px; padding-top: 3px; }
.tc-step .t { min-width: 0; color: var(--l-label-secondary); word-break: break-word; }
.tc-step.done .t { color: var(--l-label-secondary); }
.tc-step.err .t { color: var(--l-error); }
.tc-foot { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-top: 1px solid var(--l-border-l1); background: var(--l-bg-module); }
.tc-result { padding: 12px 14px; font-size: 15px; line-height: 23px; }
.tc-result.ok { background: var(--l-success-soft); color: #15803d; }
.tc-result.bad { background: var(--l-error-soft); color: var(--l-error); }
.tc-result.wait { background: var(--l-warn-soft); color: var(--l-warn-label); }
[data-theme="dark"] .tc-result.ok { color: var(--l-success); }

.composer { flex: none; border-top: 1px solid var(--l-border-l1); background: var(--l-bg-base); }
.composer-inner { max-width: 860px; margin: 0 auto; padding: 14px 24px 18px; }
.composer-box {
  border: 1px solid var(--l-border-l3); border-radius: var(--l-radius-l);
  background: var(--l-bg-input); padding: 12px 14px 10px;
  box-shadow: var(--l-shadow-1);
  transition: border-color var(--l-dur-fast) var(--l-ease), box-shadow var(--l-dur-fast) var(--l-ease);
}
.composer-box:focus-within { border-color: var(--l-accent); box-shadow: 0 0 0 4px var(--l-accent-soft); }
.composer-box textarea { border: 0; padding: 0; min-height: 52px; background: none; box-shadow: none !important; }
.composer-bar { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.hint-chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.chip {
  font-size: 14px; padding: 5px 13px; border-radius: var(--l-radius-pill);
  background: var(--l-bg-module); color: var(--l-label-secondary);
  border: 1px solid var(--l-border-l1); cursor: pointer;
  transition: background var(--l-dur-fast) var(--l-ease), color var(--l-dur-fast) var(--l-ease);
}
.chip:hover { background: var(--l-accent-soft); color: var(--l-accent); border-color: transparent; }

/* ---------------------------------------------------------------- 弹窗 / toast */
.modal-mask {
  position: fixed; inset: 0; background: #0000003d; backdrop-filter: blur(2px);
  display: grid; place-items: center; z-index: 60; padding: 20px;
}
.modal {
  width: 100%; max-width: 500px; background: var(--l-bg-layer-3);
  border: 1px solid var(--l-border-l2); border-radius: var(--l-radius-xl);
  box-shadow: var(--l-shadow-3); padding: 24px;
}
.modal h3 { margin: 0 0 16px; font-size: 17px; font-weight: 700; }
.modal .foot { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

.toast-wrap { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 10px; z-index: 80; }
.toast {
  background: var(--l-tooltip-bg); color: #fff; font-size: 15px;
  padding: 11px 16px; border-radius: var(--l-radius-m); box-shadow: var(--l-shadow-3);
  animation: toast-in var(--l-dur) var(--l-ease);
}
.toast.err { background: var(--l-error); }
.toast.ok { background: #16a34a; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } }

/* ---------------------------------------------------------------- 骨架 */
.sk { background: var(--l-bg-skeleton); border-radius: var(--l-radius-s); animation: sk 1.2s ease-in-out infinite; }
@keyframes sk { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
.sk.line { height: 14px; margin: 7px 0; }
.sk.block { height: 100px; }

/* ---------------------------------------------------------------- 分栏 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }