:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e4e7ec;
  --border-strong: #d0d5dd;
  --text: #101828;
  --muted: #667085;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef2ff;
  --ok: #059669;
  --ok-soft: #ecfdf5;
  --warn: #d97706;
  --warn-soft: #fffbeb;
  --err: #dc2626;
  --err-soft: #fef2f2;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 14px;
  line-height: 1.55;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
[hidden] { display: none !important; }
h2 { font-size: 16px; margin: 0 0 4px; font-weight: 600; }
h3 { font-size: 14px; margin: 0 0 12px; font-weight: 600; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px; background: #f2f4f7; padding: 1px 5px; border-radius: 4px;
}
.muted { color: var(--muted); margin: 0 0 12px; }

/* ---- 布局 ---- */
.boot { display: grid; place-items: center; min-height: 100vh; }
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 20px; height: 56px;
  display: flex; align-items: center; gap: 24px;
}
.container { max-width: 1120px; margin: 0 auto; padding: 24px 20px 96px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; white-space: nowrap; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 8px; background: var(--primary);
  display: grid; place-items: center;
}
.brand-mark svg { width: 18px; height: 18px; fill: none; stroke: #fff; stroke-width: 2.4;
  stroke-linecap: round; stroke-linejoin: round; }
.brand-lg { font-size: 20px; justify-content: center; }
.brand-lg .brand-mark { width: 36px; height: 36px; }

.tabs { display: flex; gap: 4px; flex: 1; overflow-x: auto; scrollbar-width: none; }
.tabs button {
  border: 0; background: none; padding: 8px 12px; border-radius: 8px; cursor: pointer;
  color: var(--muted); font: inherit; font-weight: 500; white-space: nowrap;
}
.tabs button:hover { background: #f2f4f7; color: var(--text); }
.tabs button.active { background: var(--primary-soft); color: var(--primary); }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.subcard { border-top: 1px dashed var(--border-strong); margin-top: 16px; padding-top: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-2 > .card { margin-bottom: 0; }
.grid-2 + .card { margin-top: 16px; }
.grid-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* ---- 表单 ---- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field > span { font-weight: 500; font-size: 13px; }
.field small { color: var(--muted); font-size: 12px; }
input, select, textarea {
  font: inherit; color: inherit; width: 100%;
  border: 1px solid var(--border-strong); border-radius: 8px; padding: 8px 10px; background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
textarea { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}
input[type="file"] { padding: 6px; }
.form-error { color: var(--err); margin: 0 0 12px; }
.hint { color: var(--muted); font-size: 12px; margin: 16px 0 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 8px; padding: 8px 14px; font: inherit;
  font-weight: 500; cursor: pointer; transition: background .15s, border-color .15s;
  white-space: nowrap;
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-secondary { background: #fff; border-color: var(--border-strong); color: var(--text); }
.btn-secondary:hover:not(:disabled) { background: #f9fafb; }
.btn-ghost { background: none; color: var(--muted); }
.btn-ghost:hover:not(:disabled) { background: #f2f4f7; color: var(--text); }
.danger-text { color: var(--err); }
.danger-text:hover:not(:disabled) { color: var(--err); background: var(--err-soft); }
.icon-btn {
  border: 0; background: none; color: var(--muted); cursor: pointer; padding: 6px;
  border-radius: 6px; line-height: 0;
}
.icon-btn:hover { background: var(--err-soft); color: var(--err); }
.icon-btn svg { width: 16px; height: 16px; }
.row-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row-actions.end { justify-content: flex-end; }

/* ---- 概览 ---- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 16px; }
.stat {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow); cursor: pointer; text-align: left; font: inherit;
  color: inherit; transition: border-color .15s;
}
.stat:hover { border-color: var(--border-strong); }
.stat-label { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 6px; }
.stat-value { font-size: 18px; font-weight: 600; margin: 6px 0 2px; }
.stat-sub { color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: #d0d5dd; }
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.err { background: var(--err); }

.actions { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 8px; }
.action {
  display: flex; flex-direction: column; gap: 4px; text-align: left; padding: 14px;
  border: 1px solid var(--border); border-radius: 10px; background: #fff; cursor: pointer;
  font: inherit; color: inherit; transition: border-color .15s, background .15s, transform .05s;
}
.action:hover:not(:disabled) { border-color: var(--primary); background: var(--primary-soft); }
.action:active:not(:disabled) { transform: translateY(1px); }
.action:disabled { opacity: .55; cursor: progress; }
.action-title { font-weight: 600; display: flex; align-items: center; gap: 8px; }
.action-desc { color: var(--muted); font-size: 12px; }
.action-primary { background: var(--primary); border-color: var(--primary); }
.action-primary .action-title, .action-primary .action-desc { color: #fff; }
.action-primary .action-desc { opacity: .85; }
.action-primary:hover:not(:disabled) { background: var(--primary-hover); border-color: var(--primary-hover); }

.callout { border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; white-space: pre-wrap; }
.callout-error { background: var(--err-soft); color: #991b1b; border: 1px solid #fecaca; }
.callout-warn { background: var(--warn-soft); color: #92400e; border: 1px solid #fde68a; }
.callout-info { background: var(--primary-soft); color: #3730a3; border: 1px solid #c7d2fe; }

/* 检查结果 */
.check-group { margin-bottom: 16px; }
.check-group h3 { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px; }
.check-item {
  display: grid; grid-template-columns: 20px 180px 1fr; gap: 10px; align-items: start;
  padding: 8px 0; border-bottom: 1px solid #f2f4f7;
}
.check-item:last-child { border-bottom: 0; }
.check-name { font-weight: 500; overflow-wrap: anywhere; }
.check-detail { color: var(--muted); overflow-wrap: anywhere; }
.check-item.bad .check-detail { color: #b42318; }
.icon-ok, .icon-bad { width: 18px; height: 18px; border-radius: 50%; display: grid; place-items: center;
  font-size: 11px; color: #fff; font-weight: 700; margin-top: 1px; }
.icon-ok { background: var(--ok); }
.icon-bad { background: var(--err); }

/* 企业微信消息预览 */
.wx-thread { background: #ededed; border-radius: 10px; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.wx-msg { display: flex; gap: 10px; align-items: flex-start; }
.wx-avatar { width: 36px; height: 36px; border-radius: 6px; background: var(--primary); flex: none;
  display: grid; place-items: center; }
.wx-avatar svg { width: 20px; height: 20px; fill: none; stroke: #fff; stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.wx-bubble { background: #fff; border-radius: 6px; padding: 12px 14px; max-width: 640px; width: 100%;
  font-size: 14px; line-height: 1.7; overflow-wrap: anywhere; }
.wx-meta { font-size: 11px; color: #999; margin-bottom: 4px; }
.wx-h1 { font-size: 17px; font-weight: 700; margin: 0 0 4px; }
.wx-h2 { font-size: 15px; font-weight: 700; margin: 8px 0 2px; }
.wx-quote { color: #555; padding-left: 8px; border-left: 3px solid #d9d9d9; }
.wx-gap { height: 8px; }
.wx-info { color: #07a35a; }
.wx-warning { color: #f08300; }
.wx-comment { color: #999; }
.wx-at { color: #2b67d1; }
.wx-bubble code { background: #f5f5f5; }

/* ---- 凭证 ---- */
.current { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; font-size: 13px; }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px;
  font-size: 12px; font-weight: 500; white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); }
.badge-warn { background: var(--warn-soft); color: var(--warn); }
.badge-err { background: var(--err-soft); color: var(--err); }
.badge-muted { background: #f2f4f7; color: var(--muted); }

.cred {
  display: grid; grid-template-columns: 120px 1fr auto auto; gap: 12px; align-items: center;
  padding: 12px; border: 1px solid var(--border); border-radius: 10px; margin-bottom: 8px;
}
.cred-name { font-weight: 600; }
.cred-email { display: flex; align-items: center; gap: 6px; min-width: 0; }
.cred-email code { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty { text-align: center; color: var(--muted); padding: 24px 12px; border: 1px dashed var(--border-strong);
  border-radius: 10px; }

/* ---- 可编辑表格 ---- */
.edit-table { margin-top: 12px; }
.edit-head, .edit-row { display: grid; gap: 8px; align-items: center; }
.edit-table[data-cols="channel"] .edit-head, .edit-table[data-cols="channel"] .edit-row {
  grid-template-columns: 1.2fr 0.8fr 1.4fr 0.8fr 36px;
}
.edit-table[data-cols="website"] .edit-head, .edit-table[data-cols="website"] .edit-row {
  grid-template-columns: 1.1fr 0.7fr 1.6fr 0.8fr 36px;
}
.edit-head { color: var(--muted); font-size: 12px; font-weight: 500; padding: 0 2px 6px; }
.edit-row { padding: 4px 0; }
.edit-row .cell-label { display: none; }
.edit-row input.invalid { border-color: var(--err); }
.owner-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 16px; }
.owner-list .field { margin: 0; }

.savebar {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 20;
  background: #101828; color: #fff; border-radius: 12px; padding: 10px 12px 10px 18px;
  display: flex; align-items: center; gap: 20px; box-shadow: var(--shadow-lg);
  width: min(560px, calc(100% - 32px)); justify-content: space-between;
}
.savebar .btn-ghost { color: #d0d5dd; }
.savebar .btn-ghost:hover { background: rgba(255, 255, 255, .1); color: #fff; }

/* ---- 运行记录 ---- */
table.runs { width: 100%; border-collapse: collapse; }
table.runs th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12px;
  padding: 8px; border-bottom: 1px solid var(--border); }
table.runs td { padding: 10px 8px; border-bottom: 1px solid #f2f4f7; vertical-align: top; }
table.runs details summary { cursor: pointer; color: var(--muted); }
table.runs details div { white-space: pre-wrap; font-size: 12px; color: #b42318; margin-top: 6px; }

/* ---- 登录 ---- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: min(380px, 100%); background: #fff; border: 1px solid var(--border);
  border-radius: 16px; padding: 32px 28px; box-shadow: var(--shadow-lg); text-align: center; }
.login-card .muted { margin: 4px 0 24px; }
.login-card .field { text-align: left; }

/* ---- 杂项 ---- */
.spinner { width: 14px; height: 14px; border: 2px solid currentColor; border-right-color: transparent;
  border-radius: 50%; display: inline-block; animation: spin .7s linear infinite; opacity: .8; }
.boot .spinner { width: 24px; height: 24px; color: var(--primary); }
@keyframes spin { to { transform: rotate(360deg); } }

.toasts { position: fixed; top: 68px; right: 20px; z-index: 50; display: flex; flex-direction: column; gap: 8px; }
.toast { background: #101828; color: #fff; padding: 10px 14px; border-radius: 10px; box-shadow: var(--shadow-lg);
  max-width: 380px; font-size: 13px; animation: toast-in .2s ease-out; white-space: pre-wrap; }
.toast.err { background: #b42318; }
.toast.ok { background: #067647; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-6px); } }

.dialog { border: 0; border-radius: 14px; padding: 24px; width: min(420px, calc(100% - 32px));
  box-shadow: var(--shadow-lg); }
.dialog::backdrop { background: rgba(16, 24, 40, .45); }
.dialog h3 { font-size: 16px; margin-bottom: 8px; }

/* ---- 响应式 ---- */
@media (max-width: 960px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .actions { grid-template-columns: repeat(2, 1fr); }
  .action-primary { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  .topbar-inner { height: auto; flex-wrap: wrap; gap: 8px 12px; padding: 10px 16px 0; }
  .tabs { order: 3; flex-basis: 100%; padding-bottom: 6px; }
  #logout { margin-left: auto; }
  .container { padding: 16px 12px 96px; }
  .card { padding: 16px; }
  .grid-2, .grid-form, .grid-3, .owner-list { grid-template-columns: 1fr; }
  .stats { gap: 10px; }
  .actions { grid-template-columns: 1fr; }
  .check-item { grid-template-columns: 20px 1fr; }
  .check-item .check-detail { grid-column: 2; }
  .cred { grid-template-columns: 1fr auto; }
  .cred-email { grid-column: 1 / -1; order: 3; }
  .edit-head { display: none; }
  .edit-table[data-cols] .edit-row {
    grid-template-columns: 1fr 1fr; border: 1px solid var(--border); border-radius: 10px;
    padding: 10px; margin-bottom: 8px; position: relative;
  }
  .edit-row .cell { display: flex; flex-direction: column; gap: 4px; }
  .edit-row .cell-wide { grid-column: 1 / -1; }
  .edit-row .cell-label { display: block; font-size: 12px; color: var(--muted); }
  .edit-row .cell-remove { position: absolute; top: 6px; right: 6px; }
  .edit-row .cell:first-child { padding-right: 32px; }
  table.runs thead { display: none; }
  table.runs tr { display: grid; grid-template-columns: 1fr auto; padding: 10px 0; border-bottom: 1px solid #f2f4f7; }
  table.runs td { border: 0; padding: 2px 0; }
  table.runs td.detail-cell { grid-column: 1 / -1; }
  .toasts { left: 12px; right: 12px; top: auto; bottom: 20px; }
}

/* 每个频道可直接生成邀请，不需要离开频道列表。 */
#channel-table .edit-head, #channel-table .edit-row { grid-template-columns: 1fr 1fr 1.5fr 1.2fr 155px; }
#channel-table .cell-remove { display: flex; align-items: center; gap: 4px; }
#youtube-invite-url { font-family: ui-monospace, monospace; }
#youtube-web-setup summary { cursor: pointer; }
@media (max-width: 760px) {
  #channel-table .edit-row { grid-template-columns: 1fr; }
  #channel-table .cell-remove { position: static; justify-content: flex-end; }
}
#youtube-invite-result { scroll-margin-top: 128px; }