:root {
  --paper: #EEF1F4;
  --panel: #FFFFFF;
  --ink: #1B2430;
  --ink-soft: #57616F;
  --line: #DBE0E6;
  --teal: #2B6E71;
  --teal-soft: #E4EFEE;
  --amber: #C98A2C;
  --amber-soft: #FBF0DD;
  --slate: #8A94A6;
  --slate-soft: #EEF0F3;
  --danger: #B0432F;
  --sidebar-bg: #1B2430;
  --sidebar-ink: #C7CFDA;
  --sidebar-ink-dim: #7C8698;
  --font-ui: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.5;
}

.frame { max-width: 980px; margin: 0 auto; padding: 0 20px 60px; }

/* ---- 整体外壳：侧边栏 + 主内容区 ---- */
.shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-ink);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.main {
  flex: 1;
  min-width: 0;
  padding: 28px 34px 50px;
  max-width: 1100px;
}

.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; letter-spacing: 0.02em; padding: 4px 10px 18px; }
.brand-mark { color: var(--teal); font-size: 18px; }
.brand-text { font-family: var(--font-mono); color: #fff; }

.nav-groups { flex: 1; display: flex; flex-direction: column; gap: 18px; }

.nav-item {
  display: block;
  color: var(--sidebar-ink);
  text-decoration: none;
  font-size: 13.5px;
  padding: 7px 10px;
  border-radius: 6px;
  margin-bottom: 2px;
  transition: background-color 0.15s ease, color 0.15s ease;
  position: relative;
}
.nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-item.nav-active { background: var(--teal); color: #fff; font-weight: 500; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.nav-item-top { font-weight: 500; margin-bottom: 4px; }

.nav-group-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sidebar-ink-dim);
  padding: 0 10px 4px;
}

/* ---- 侧边栏导航分组改成可折叠(details/summary)，点分组名展开/收起 ---- */
.nav-group { margin: 0; }
.nav-group summary.nav-group-label {
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
}
.nav-group summary.nav-group-label:hover { background: rgba(255,255,255,0.06); color: var(--sidebar-ink); }
.nav-group summary.nav-group-label::-webkit-details-marker { display: none; }
.nav-group summary.nav-group-label::before {
  content: "▸";
  display: inline-block;
  margin-right: 6px;
  font-size: 9px;
  transition: transform 0.15s ease;
}
.nav-group[open] summary.nav-group-label::before { transform: rotate(90deg); }
.nav-group .nav-item { margin-left: 2px; }
.nav-group[open] .nav-item:first-of-type { margin-top: 4px; }

.user-box {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--sidebar-ink-dim);
  padding: 12px 10px 4px;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 10px;
}
.user-box .link { color: var(--sidebar-ink); }
.user-box .link:hover { color: #fff; }

/* ---- 管道流量条：整个工具的签名元素 ---- */
.pipeline {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 26px 24px;
  margin-bottom: 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(27, 36, 48, 0.05);
}
.pipeline-stage {
  flex: 1;
  text-align: center;
  padding: 12px 8px;
  border-radius: 8px;
  background: var(--slate-soft);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.pipeline-stage:hover { transform: translateY(-2px); box-shadow: 0 4px 10px rgba(27, 36, 48, 0.08); }
.pipeline-stage.stage-ready { background: var(--teal-soft); }
.pipeline-stage.stage-sent { background: var(--paper); }
.stage-count {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.stage-label { font-size: 12.5px; color: var(--ink-soft); margin-top: 3px; }
.pipeline-arrow { color: var(--slate); font-size: 16px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
  box-shadow: 0 1px 2px rgba(27, 36, 48, 0.04);
}
.panel h2 { font-size: 14.5px; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { text-align: left; padding: 7px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table th { color: var(--ink-soft); font-weight: 500; width: 120px; }

.preview-list { list-style: none; margin: 0 0 10px; padding: 0; }
.preview-list li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.preview-list li:last-child { border-bottom: none; }

.conn-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--teal);
  background: var(--teal-soft);
  padding: 2px 7px;
  border-radius: 5px;
  white-space: nowrap;
}

.preview-text { color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.time-tag { margin-left: auto; color: var(--ink-soft); font-size: 12px; }

.link { font-size: 13px; color: var(--teal); text-decoration: none; }
.link:hover { text-decoration: underline; }

.empty { color: var(--slate); font-size: 13px; }
.hint { color: var(--ink-soft); font-size: 12.5px; margin: -4px 0 16px; }

/* ---- 队列页 ---- */
.tabs { display: flex; gap: 6px; margin-bottom: 20px; }
.tab {
  padding: 7px 14px;
  border-radius: 7px;
  text-decoration: none;
  font-size: 13px;
  color: var(--ink-soft);
  background: var(--panel);
  border: 1px solid var(--line);
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.tab:hover { background: var(--slate-soft); color: var(--ink); }
.tab-active { color: var(--ink); background: var(--teal-soft); border-color: var(--teal); font-weight: 500; }
.tab-active:hover { background: var(--teal-soft); }

.post-list { display: flex; flex-direction: column; gap: 14px; }
.post-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  box-shadow: 0 1px 2px rgba(27, 36, 48, 0.04);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
.post-card:hover { box-shadow: 0 3px 10px rgba(27, 36, 48, 0.07); border-color: #CCD3DB; }
.post-card-disabled { opacity: 0.55; }
.post-card-disabled:hover { box-shadow: 0 1px 2px rgba(27, 36, 48, 0.04); border-color: var(--line); }
.post-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }

/* ---- 连接列表页：源→目标这行，源可能很多个(尤其是纯数字频道ID堆一起)，
   必须能正常换行，不能让一长串文字撑破卡片、溢出容器影响版面 ---- */
.conn-route {
  margin: 0 0 10px;
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.6;
  overflow-wrap: anywhere;   /* 长的数字ID/用户名到边界强制换行，不会整体溢出 */
  word-break: break-word;
}
.conn-route-sources { color: var(--ink); }
.conn-route-arrow { color: var(--slate); margin: 0 6px; }
.conn-route-dest { color: var(--teal); font-weight: 500; }
.post-id { color: var(--slate); font-size: 12px; }
.post-text { margin: 0 0 10px; white-space: pre-wrap; font-size: 13.5px; }

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 6px 12px;
  padding: 8px 0;
}
.checkbox-grid .checkbox-label { font-size: 12.5px; }

.media-row { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.media-thumb { width: 84px; height: 84px; object-fit: cover; border-radius: 6px; border: 1px solid var(--line); }

.post-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.inline-form { display: flex; gap: 8px; align-items: center; }

.btn {
  font-family: var(--font-ui);
  font-size: 13px;
  padding: 6px 13px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
}
.btn-primary { background: var(--teal); border-color: var(--teal); color: #fff; box-shadow: 0 1px 3px rgba(43, 110, 113, 0.25); }
.btn-danger { color: var(--danger); border-color: var(--danger); background: #fff; }
.btn:hover { background: var(--slate-soft); border-color: #CCD3DB; }
.btn-primary:hover { background: #235a5c; border-color: #235a5c; opacity: 1; box-shadow: 0 2px 6px rgba(43, 110, 113, 0.35); }
.btn-danger:hover { background: #FBE7E3; opacity: 1; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

input[type="file"], input[type="datetime-local"] {
  font-family: var(--font-ui);
  font-size: 12.5px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 8px;
  background: var(--paper);
}

.badge { font-family: var(--font-mono); font-size: 12px; padding: 1px 8px; border-radius: 10px; }
.badge-amber { background: var(--amber-soft); color: var(--amber); }
.badge-teal { background: var(--teal-soft); color: var(--teal); }
.badge-slate { background: var(--slate-soft); color: var(--slate); }
.badge-danger { background: #FBE7E3; color: var(--danger); }

.footbar { text-align: center; color: var(--slate); font-size: 12px; padding: 20px 0; }

/* ---- flash 提示 ---- */
.flash-box { margin-bottom: 16px; }
.flash-msg {
  background: var(--teal-soft);
  color: #1B4A4C;
  border: 1px solid var(--teal);
  border-left: 3px solid var(--teal);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 8px;
  box-shadow: 0 1px 3px rgba(27, 36, 48, 0.06);
  animation: flash-in 0.2s ease;
}
@keyframes flash-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- 登录/初始化页 ---- */
.auth-box {
  max-width: 380px;
  margin: 60px auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 28px 26px;
}
.auth-box h2 { margin-top: 0; }

/* ---- 通用表单 ---- */
.stack-form { display: flex; flex-direction: column; gap: 14px; }
.stack-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
}
.stack-form input[type="text"],
.stack-form input[type="password"],
.stack-form select,
.stack-form textarea {
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 8px 10px;
  background: var(--paper);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}
.stack-form input[type="text"]:focus,
.stack-form input[type="password"]:focus,
.stack-form select:focus,
.stack-form textarea:focus,
input[type="number"]:focus,
input[type="datetime-local"]:focus {
  outline: none;
  border-color: var(--teal);
  background: #fff;
  box-shadow: 0 0 0 3px var(--teal-soft);
}
.stack-form textarea { font-family: var(--font-mono); resize: vertical; }
.checkbox-label { flex-direction: row !important; align-items: center; gap: 8px !important; }
.checkbox-label input { width: auto; }

.wide-form { max-width: 640px; }
.wide-form fieldset {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 0;
}
.wide-form legend { font-size: 12.5px; color: var(--ink-soft); padding: 0 6px; }

.wide-form details {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  margin: 0;
}
.wide-form details summary {
  cursor: pointer;
  list-style: none;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.wide-form details summary::-webkit-details-marker { display: none; }
.wide-form details summary::before {
  content: "▸";
  color: var(--slate);
  font-size: 11px;
  transition: transform 0.15s;
}
.wide-form details[open] summary::before { transform: rotate(90deg); }
.wide-form details[open] summary { border-bottom: 1px solid var(--line); }
.wide-form details > *:not(summary) { padding: 0 16px; }
.wide-form details > label:first-of-type,
.wide-form details > p:first-of-type { margin-top: 14px; }

/* ---- 连接列表页"详情"折叠区块，跟.wide-form details同款视觉，独立作用域 ---- */
.conn-detail {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-top: 10px;
}
.conn-detail summary {
  cursor: pointer;
  list-style: none;
  padding: 8px 14px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 8px;
}
.conn-detail summary::-webkit-details-marker { display: none; }
.conn-detail summary::before {
  content: "▸";
  color: var(--slate);
  font-size: 10px;
  transition: transform 0.15s;
}
.conn-detail[open] summary::before { transform: rotate(90deg); }
.conn-detail[open] summary { border-bottom: 1px solid var(--line); }
.conn-detail .table { margin: 10px 14px 14px; width: calc(100% - 28px); }
.wide-form details > *:last-child { margin-bottom: 14px; }

.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }

/* ---- 素材标签库 ---- */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 16px;
}
.media-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  text-align: center;
}
.media-thumb-lg { width: 100%; height: 110px; object-fit: cover; border-radius: 6px; margin-bottom: 8px; }
.media-tags { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; margin-bottom: 8px; }

/* ---- 响应式：窄屏下侧边栏收窄/转横排 ---- */
@media (max-width: 900px) {
  .sidebar { width: 168px; padding: 16px 10px; }
  .main { padding: 20px 18px 40px; }
  .nav-item, .nav-group-label { padding-left: 6px; padding-right: 6px; }
}

@media (max-width: 640px) {
  .shell { flex-direction: column; }
  .sidebar {
    width: 100%; height: auto; position: relative; flex-direction: row;
    align-items: center; flex-wrap: wrap; gap: 6px; padding: 12px;
  }
  .nav-groups { flex-direction: row; flex-wrap: wrap; gap: 10px; }
  .nav-group { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; }
  .nav-group-label { display: none; }
  /* 窄屏下导航栏本来就是横排铺开的，不需要折叠这回事，不管details的open状态
     强制把里面的链接都显示出来(浏览器原生行为是没展开就不显示子元素，这里覆盖掉) */
  .nav-group > .nav-item { display: inline-block !important; }
  .user-box { border-top: none; margin-top: 0; padding: 0; }
  .main { padding: 18px 14px 40px; }
}