:root {
  --bg: #0f1419;
  --sidebar: #1a2332;
  --card: #1e2a3a;
  --border: #2d3f56;
  --text: #e7ecf3;
  --muted: #8899aa;
  --primary: #3b82f6;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

.layout { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--sidebar); border-right: 1px solid var(--border); display: flex; flex-direction: column; padding: 20px 0; }
.logo { font-size: 18px; font-weight: 700; padding: 0 20px 24px; color: var(--primary); }
.nav-item { display: block; padding: 12px 20px; color: var(--muted); text-decoration: none; transition: all .2s; }
.nav-item:hover, .nav-item.active { background: rgba(59,130,246,.15); color: var(--primary); }
.sidebar-footer { margin-top: auto; padding: 16px 20px; border-top: 1px solid var(--border); }
.sidebar-footer input { width: 100%; padding: 8px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); margin-bottom: 8px; }
.sidebar-footer button { width: 100%; padding: 8px; background: var(--primary); border: none; border-radius: 6px; color: #fff; cursor: pointer; }

.content { flex: 1; padding: 24px 32px; overflow-y: auto; }
.header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.header h1 { font-size: 24px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; }
.status-dot.online { background: var(--success); box-shadow: 0 0 8px var(--success); }

.page { display: none; }
.page.active { display: block; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.stat-label { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--primary); }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; }
.card h3 { margin-bottom: 16px; }

.arch-diagram { text-align: center; padding: 20px; }
.arch-box { display: inline-block; padding: 12px 24px; background: var(--sidebar); border: 1px solid var(--border); border-radius: 8px; margin: 4px; }
.arch-box.client { border-color: var(--primary); }
.arch-box.edge { font-size: 13px; }
.arch-box.origin { border-color: var(--success); }
.arch-arrow { color: var(--muted); margin: 8px 0; font-size: 13px; }
.arch-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }

.toolbar { margin-bottom: 16px; display: flex; gap: 8px; }
.btn { padding: 8px 16px; border: 1px solid var(--border); background: var(--card); color: var(--text); border-radius: 6px; cursor: pointer; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn:hover { opacity: .9; }

.data-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 12px; overflow: hidden; }
.data-table th, .data-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--sidebar); color: var(--muted); font-weight: 500; font-size: 13px; }
.badge { padding: 2px 8px; border-radius: 4px; font-size: 12px; }
.badge.ok { background: rgba(34,197,94,.2); color: var(--success); }
.badge.warn { background: rgba(245,158,11,.2); color: var(--warning); }
.badge.err { background: rgba(239,68,68,.2); color: var(--danger); }

.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 100; padding: 16px; }
.modal.hidden { display: none; }
.hidden { display: none !important; }
.modal-content {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  width: 420px; max-width: 92vw; max-height: min(90vh, 680px);
  display: flex; flex-direction: column; overflow: hidden; padding: 0;
}
.modal-content.modal-lg { width: 780px; max-height: min(90vh, 860px); }
.modal-content.modal-sm { width: 360px; max-height: min(90vh, 520px); }
.modal-header { padding: 14px 20px 10px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.modal-header h3 { margin: 0; font-size: 16px; font-weight: 600; }
.modal-body { padding: 14px 20px; overflow-y: auto; flex: 1; min-height: 0; }
.modal-body label { display: block; margin-bottom: 0; font-size: 12px; color: var(--muted); }
.modal-body input, .modal-body select, .modal-body textarea {
  width: 100%; padding: 7px 10px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text); margin-top: 4px; font-size: 13px;
}
.modal-body textarea { resize: vertical; min-height: 52px; }
.modal-body .hint { text-align: left; margin: 0 0 10px; font-size: 12px; }
.modal-body > label { margin-bottom: 10px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 10px 20px 14px; border-top: 1px solid var(--border); flex-shrink: 0; margin-top: 0; }

.form-row { margin-bottom: 12px; }

.admin-login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { width: 400px; max-width: 92vw; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.login-box h1 { text-align: center; margin-bottom: 8px; font-size: 22px; }
.login-sub { text-align: center; color: var(--muted); font-size: 13px; margin-bottom: 24px; }
.login-box label { display: block; margin-bottom: 14px; font-size: 13px; color: var(--muted); }
.login-box input { width: 100%; padding: 10px 12px; margin-top: 4px; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); }
.login-box .full { width: 100%; margin-top: 8px; padding: 12px; }
.login-box .hint { text-align: center; margin-top: 16px; font-size: 12px; color: var(--muted); }
.login-box .hint a { color: var(--primary); }
.page-desc { color: var(--muted); font-size: 14px; margin-bottom: 16px; line-height: 1.6; }
.admin-user-bar { padding: 0 20px 12px; font-size: 12px; color: var(--muted); border-bottom: 1px solid var(--border); margin-bottom: 8px; }
.logout-btn { width: 100%; padding: 8px; background: transparent; border: 1px solid var(--border); border-radius: 6px; color: var(--muted); cursor: pointer; }
.btn.danger { border-color: var(--danger); color: var(--danger); }
.btn.danger:hover { background: rgba(239,68,68,.15); }

.logo img { max-height: 28px; vertical-align: middle; margin-right: 8px; }

/* 站点设置 */
.site-settings { display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: start; }
.site-settings-main { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.site-card { padding: 0; overflow: hidden; }
.site-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 22px 24px 0; }
.site-card-head h3 { margin: 0; font-size: 16px; }
.site-card-sub { color: var(--muted); font-size: 12px; margin-top: 4px; line-height: 1.5; }
.site-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; padding: 20px 24px 24px; }
.form-section { margin-bottom: 14px; }
.form-section:last-child { margin-bottom: 0; }
.form-section h4 { margin: 0 0 8px; font-size: 12px; color: #8899aa; border-bottom: 1px solid #2d3f56; padding-bottom: 4px; font-weight: 500; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
.form-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px 12px; }
.form-grid-2 label, .form-grid-3 label { margin-bottom: 0; }
.form-grid-3 .span-2 { grid-column: span 2; }
.form-grid-3 .span-3 { grid-column: 1 / -1; }
.plan-form-compact .form-section { margin-bottom: 12px; }
.form-advanced { margin-top: 4px; font-size: 12px; color: var(--muted); }
.form-advanced summary { cursor: pointer; padding: 6px 0; user-select: none; }
.form-advanced[open] summary { margin-bottom: 8px; }
@media (max-width: 720px) {
  .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
  .form-grid-3 .span-2, .form-grid-3 .span-3 { grid-column: auto; }
}
.site-field { display: flex; flex-direction: column; gap: 6px; }
.site-field-full { grid-column: 1 / -1; }
.site-field-label { font-size: 12px; color: var(--muted); font-weight: 500; }
.site-field-hint { font-size: 11px; color: var(--muted); opacity: .85; }
.site-check { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.site-check input { width: auto; margin: 0; }
textarea.site-input { min-height: 72px; resize: vertical; font-family: inherit; }
.site-input {
  width: 100%; padding: 10px 12px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px; transition: border-color .2s, box-shadow .2s;
}
.site-input:hover { border-color: #3d5570; }
.site-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.site-input::placeholder { color: #5a6d82; }

.site-upload-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; padding: 8px 24px 24px; }
.site-upload-zone {
  background: var(--bg); border: 1px dashed var(--border); border-radius: 10px;
  padding: 20px 16px; text-align: center; transition: border-color .2s, background .2s;
}
.site-upload-zone:hover { border-color: rgba(59,130,246,.45); background: rgba(59,130,246,.04); }
.site-upload-preview {
  min-height: 88px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.site-upload-preview-sm { min-height: 72px; }
.site-upload-preview img { max-height: 56px; max-width: 160px; object-fit: contain; }
.site-upload-preview-sm img { width: 40px; height: 40px; object-fit: contain; }
.site-upload-empty { display: flex; flex-direction: column; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.site-upload-icon { font-size: 22px; opacity: .7; }
.site-upload-btn { width: 100%; }

.site-settings-aside { position: sticky; top: 24px; }
.site-preview-card { padding: 20px; }
.site-preview-card h3 { margin-bottom: 4px; font-size: 15px; }
.site-preview-block { margin-top: 18px; }
.site-preview-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px; }
.site-preview-bar {
  display: flex; align-items: center; gap: 8px; padding: 10px 14px;
  background: var(--sidebar); border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-weight: 600; color: var(--primary);
}
.site-preview-bar img { height: 22px; width: auto; }
.site-preview-login {
  padding: 18px 16px; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; text-align: center;
}
.site-preview-login-title { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.site-preview-login-sub { font-size: 12px; color: var(--muted); }
.site-preview-client {
  padding: 12px 14px; background: #0f172a; border: 1px solid #1e293b; border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.site-preview-client-title { font-size: 12px; color: #e2e8f0; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.site-preview-client-status { font-size: 11px; color: #94a3b8; margin-bottom: 10px; }
.site-preview-progress { height: 6px; background: #2d3f56; border-radius: 3px; overflow: hidden; }
.site-preview-progress span { display: block; height: 100%; background: linear-gradient(90deg, #3b82f6, #60a5fa); border-radius: 3px; animation: previewPulse 2s ease-in-out infinite; }
@keyframes previewPulse { 0%,100% { opacity: 1; } 50% { opacity: .75; } }

@media (max-width: 1100px) {
  .site-settings { grid-template-columns: 1fr; }
  .site-settings-aside { position: static; }
}
@media (max-width: 640px) {
  .site-form-grid, .site-upload-grid { grid-template-columns: 1fr; }
  .site-card-head { flex-direction: column; }
  .site-card-head .btn { width: 100%; }
}

/* 实例管理 · 节点分配弹窗 */
.node-pick-summary {
  display: flex; flex-wrap: wrap; gap: 8px 24px;
  padding: 10px 14px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; font-size: 13px; margin: 10px 0 12px;
}
.node-pick-summary span { color: var(--muted); }
.node-pick-summary strong { color: var(--text); font-weight: 600; margin: 0 2px; }
.node-pick-panel { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.node-pick-table { width: 100%; border-collapse: collapse; font-size: 13px; background: var(--bg); }
.node-pick-table th, .node-pick-table td {
  padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle;
}
.node-pick-table th {
  background: var(--sidebar); color: var(--muted); font-size: 12px; font-weight: 500;
  position: sticky; top: 0; z-index: 1;
}
.node-pick-table tbody tr:last-child td { border-bottom: none; }
.node-pick-table tbody tr:hover td { background: rgba(59,130,246,.06); }
.node-pick-table tbody tr.is-bound td { background: rgba(59,130,246,.05); }
.node-pick-table .col-check, .node-pick-table .col-primary { width: 48px; text-align: center; }
.node-pick-table .col-region { width: 56px; white-space: nowrap; }
.node-pick-table .col-load { width: 56px; white-space: nowrap; }
.node-pick-table .col-load.warn { color: var(--warning); }
.node-pick-table .col-code { color: var(--muted); font-size: 12px; }
.node-pick-table .col-code code { font-size: 11px; }
.node-pick-table input[type="checkbox"],
.node-pick-table input[type="radio"] {
  width: 16px; height: 16px; margin: 0; padding: 0; cursor: pointer; accent-color: var(--primary);
}
.node-pick-table label.pick-label {
  display: inline; margin: 0; font-size: 13px; color: var(--text); cursor: pointer;
}
.modal-body .node-pick-table input[type="checkbox"],
.modal-body .node-pick-table input[type="radio"] { width: 16px; margin-top: 0; }

/* 实例管理表格 */
.table-scroll { overflow-x: auto; border-radius: 12px; border: 1px solid var(--border); }
.apps-table { min-width: 920px; margin: 0; border-radius: 0; }
.apps-table td { vertical-align: middle; font-size: 13px; line-height: 1.45; }
.apps-table .col-id { width: 44px; color: var(--muted); }
.apps-table .col-name { min-width: 120px; }
.apps-table .col-nodes { min-width: 200px; max-width: 300px; }
.apps-table .col-proto, .apps-table .col-status { width: 76px; }
.apps-table .col-actions { width: 200px; }
.cell-name strong { display: block; font-weight: 600; }
.cell-name .sub { font-size: 11px; color: var(--muted); margin-top: 2px; }
.cell-stack { display: flex; flex-direction: column; gap: 2px; }
.cell-sub { font-size: 11px; color: var(--muted); }
.cell-mono { font-size: 12px; }
.muted-cell { color: var(--muted); font-size: 12px; }
.node-chip-list { display: flex; flex-wrap: wrap; gap: 4px; }
.node-chip {
  display: inline-flex; align-items: center; gap: 3px;
  padding: 2px 8px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 999px; font-size: 11px; white-space: nowrap; max-width: 100%;
}
.node-chip.primary { border-color: rgba(59,130,246,.4); background: rgba(59,130,246,.12); }
.node-chip-mark {
  font-size: 10px; line-height: 1.4; padding: 0 4px;
  background: var(--primary); color: #fff; border-radius: 3px; flex-shrink: 0;
}
.node-chip-meta { font-size: 11px; color: var(--muted); margin-top: 4px; }
.actions-cell { vertical-align: middle !important; }
.btn-group-compact { display: flex; flex-wrap: wrap; gap: 4px; max-width: 196px; }
.btn.btn-sm { padding: 4px 9px; font-size: 12px; line-height: 1.35; }
.badge { white-space: nowrap; display: inline-block; line-height: 1.5; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 4px; background: rgba(59,130,246,.15); color: var(--primary); font-size: 11px; }
.tag.primary { background: rgba(34,197,94,.15); color: var(--success); }

.batch-toolbar-wrap { margin-bottom: 10px; }
.batch-toolbar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  padding: 8px 12px; border-radius: 8px; background: rgba(239,68,68,0.06); border: 1px solid rgba(239,68,68,0.2);
}
.batch-toolbar .batch-del-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.batch-count { font-size: 12px; }
.data-table .col-check { width: 36px; text-align: center; }
.data-table .col-check input { cursor: pointer; }