:root {
  --bg: #f0f2f5; --panel: #ffffff; --fg: #1f2329; --muted: #6b7280; --line: #e5e7eb;
  --accent: #3b82f6; --accent-bg: #e6f0ff; --topbar: #001529; --topbar-fg: #ffffff;
  --danger: #d9363e; --ok: #1a9d52; --input-bg: #ffffff; --side: #ffffff; --shadow: 0 1px 3px rgba(0,0,0,.08);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --panel: #1a1e24; --fg: #e6e9ee; --muted: #8b93a1; --line: #2a3038;
    --accent: #5b9bff; --accent-bg: #172a4a; --topbar: #000c17; --input-bg: #14181d;
    --side: #1a1e24; --danger: #ef6b66; --ok: #3fb96e; --shadow: none;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
h2 { font-size: 1.15rem; margin: 0; font-weight: 600; }
h3 { margin: 0 0 .5rem; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.ico { width: 18px; height: 18px; flex: none; }
.muted { color: var(--muted); } .small { font-size: .85em; } .pad { padding: 1rem; }
.spacer { flex: 1; }

/* ---- login ---- */
.login-page { min-height: 100%; display: grid; place-items: start center; padding: 9vh 16px 24px; background: var(--bg); }
.login-box { width: 100%; max-width: 380px; text-align: center; }
.brand-lg { display: inline-flex; align-items: center; gap: .6rem; font-size: 2rem; font-weight: 700; color: var(--fg); }
.brand-lg .ico { width: 38px; height: 38px; color: var(--accent); }
.login-sub { color: var(--muted); margin: .25rem 0 2rem; }
.login-tab { border-bottom: 1px solid var(--line); margin-bottom: 1.25rem; }
.login-tab span { display: inline-block; padding: .5rem .25rem; color: var(--accent); border-bottom: 2px solid var(--accent); margin-bottom: -1px; }
#login-form { display: grid; gap: 1rem; text-align: left; }
.field-icon { display: flex; align-items: center; gap: .5rem; background: var(--input-bg); border: 1px solid var(--line); padding: 0 .75rem; height: 42px; border-radius: 2px; }
.field-icon:focus-within { border-color: var(--accent); }
.field-icon input { flex: 1; border: 0; outline: 0; background: transparent; color: var(--fg); font: inherit; height: 100%; min-width: 0; }
.field-icon .ico { color: var(--muted); }
.remember { display: flex; align-items: center; gap: .5rem; }
.icon-btn { border: 0; background: transparent; color: var(--muted); cursor: pointer; padding: 4px; display: grid; place-items: center; }
.icon-btn.light { color: var(--topbar-fg); }

/* ---- buttons ---- */
.btn { padding: .4rem .95rem; border: 1px solid var(--line); border-radius: 3px; background: var(--panel); color: var(--fg); font: inherit; cursor: pointer; }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); color: #fff; }
.btn.block { width: 100%; height: 42px; }
.btn.link { border: 0; background: none; color: var(--accent); padding: .2rem .4rem; }
.btn.link.danger { color: var(--danger); }
.error { color: var(--danger); min-height: 1.2em; margin: 0; }
.error.banner { padding: 0 0 .5rem; }
.error.banner:empty { display: none; }

/* ---- shell ---- */
.topbar { height: 56px; background: var(--topbar); color: var(--topbar-fg); display: flex; align-items: center; gap: .75rem; padding: 0 16px; position: sticky; top: 0; z-index: 10; }
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 600; font-size: 1.1rem; }
.brand .ico { color: var(--accent); width: 24px; height: 24px; }
.account { position: relative; }
.account-btn { display: flex; align-items: center; gap: .5rem; background: none; border: 0; color: inherit; font: inherit; cursor: pointer; padding: .25rem .4rem; }
.avatar { width: 28px; height: 28px; border-radius: 50%; background: #8c9399; color: #fff; display: grid; place-items: center; font-weight: 600; text-transform: uppercase; }
.menu { position: absolute; right: 0; top: 110%; background: var(--panel); border: 1px solid var(--line); box-shadow: 0 4px 16px rgba(0,0,0,.18); border-radius: 4px; min-width: 140px; padding: 4px; }
.menu-item { display: block; width: 100%; text-align: left; padding: .5rem .75rem; background: none; border: 0; color: var(--fg); font: inherit; cursor: pointer; border-radius: 3px; }
.menu-item:hover { background: var(--accent-bg); }

.shell { display: flex; min-height: calc(100vh - 56px); }
.sidebar { width: 232px; background: var(--side); border-right: 1px solid var(--line); padding: 8px 0; flex: none; }
.nav-item { display: flex; align-items: center; gap: .75rem; width: 100%; padding: .8rem 1.25rem; color: var(--fg); background: none; border: 0; font: inherit; text-align: left; cursor: pointer; border-right: 3px solid transparent; }
.nav-item:hover { color: var(--accent); }
.nav-item.active { background: var(--accent-bg); color: var(--accent); border-right-color: var(--accent); }
.nav-item .chev { margin-left: auto; transition: transform .15s; }
.group-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.sub-item { padding-left: 3.1rem; }
.content { flex: 1; padding: 20px 24px; min-width: 0; }
.page-head { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: .9rem; }
.page-head h2 { margin-right: auto; }
.search { height: 32px; min-width: 260px; padding: 0 .65rem; border: 1px solid var(--line); border-radius: 3px; background: var(--input-bg); color: var(--fg); font: inherit; }
.search:focus { outline: 0; border-color: var(--accent); }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 1.25rem; box-shadow: var(--shadow); margin-top: .9rem; }
.table-wrap { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--shadow); overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .7rem .9rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { background: color-mix(in srgb, var(--bg) 60%, var(--panel)); font-weight: 600; font-size: .85rem; }
tbody tr:hover { background: color-mix(in srgb, var(--accent-bg) 45%, transparent); }
td.detail { max-width: 460px; overflow: hidden; text-overflow: ellipsis; font-family: ui-monospace, Menlo, monospace; font-size: .8rem; color: var(--muted); }
.badge { display: inline-flex; align-items: center; gap: .4rem; }
.badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.badge.online { color: var(--ok); } .badge.online::before { background: var(--ok); }
.badge.offline { color: var(--muted); }

.kv { display: grid; grid-template-columns: 90px 1fr; gap: .75rem 1rem; align-items: center; margin: 1rem 0; }
.kv dt { text-align: right; color: var(--muted); } .kv dd { margin: 0; display: flex; align-items: center; gap: .5rem; min-width: 0; }
code { background: color-mix(in srgb, var(--bg) 70%, var(--panel)); border: 1px solid var(--line); padding: .2rem .5rem; border-radius: 3px; font-family: ui-monospace, Menlo, monospace; overflow-wrap: anywhere; }
.copy { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 2px; }

.tagbar { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin-bottom: .9rem; }
.tag-form { display: flex; gap: .4rem; margin-left: auto; }
.tag-form .search { min-width: 150px; }
.chip { display: inline-flex; align-items: center; gap: .3rem; color: #fff; padding: .1rem .55rem; border-radius: 10px; font-size: .8rem; margin: 0 .3rem .2rem 0; }
.chip-x { border: 0; background: none; color: inherit; cursor: pointer; padding: 0 .1rem; font-size: 1rem; line-height: 1; opacity: .85; }
.chip-x:hover { opacity: 1; }
select.search { padding-right: .4rem; }
select.mini { height: 28px; border: 1px solid var(--line); border-radius: 3px; background: var(--input-bg); color: var(--fg); font: inherit; max-width: 170px; }
.page-head h3 { margin-right: auto; font-size: 1rem; }
.panel h3 { margin: 0 0 .5rem; font-size: 1rem; }
.setup-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem 1rem; margin-top: .75rem; }
.setup-grid label { display: grid; gap: .25rem; font-size: .85rem; color: var(--muted); }
.setup-grid input { padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 3px; background: var(--input-bg); color: var(--fg); font: inherit; }
.setup-actions { grid-column: 1 / -1; display: flex; gap: .5rem; }
.setup-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 1rem; }
.warnings { margin: .75rem 0 0; padding-left: 1.2rem; color: var(--danger); }
.warnings:empty { display: none; }
.copyrow { display: flex; align-items: flex-start; gap: .5rem; }
.copyrow code { min-width: 0; word-break: break-all; font-size: .8rem; }
#qr-canvas { display: block; max-width: 100%; height: auto; background: #fff; border: 8px solid #fff; border-radius: 4px; }
@media (max-width: 760px) { .setup-grid { grid-template-columns: 1fr; } }
.page-head.spaced { margin-top: 1.75rem; }
fieldset { border: 1px solid var(--line); border-radius: 4px; padding: .5rem .75rem; margin: 0; }
legend { font-size: .85rem; color: var(--muted); padding: 0 .3rem; }
.checks { display: grid; gap: .35rem; max-height: 160px; overflow-y: auto; }
.strategy-status { margin-left: .5rem; font-size: .8rem; }
.strategy-status.applied { color: var(--ok); }
.strategy-status.pending { color: var(--muted); }
dialog.wide { width: min(640px, calc(100vw - 32px)); }
#strategy-options { max-height: 52vh; overflow-y: auto; padding-right: .4rem; border-top: 1px solid var(--line); }
#strategy-options h4 { margin: 1rem 0 .4rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.opt-row { display: grid; grid-template-columns: 1fr 190px; gap: .15rem .75rem; align-items: center; padding: .3rem 0; }
.opt-row .opt-help { grid-column: 1 / -1; margin-top: -.1rem; }
.opt-row select, .opt-row input { height: 30px; padding: 0 .5rem; border: 1px solid var(--line); border-radius: 3px; background: var(--input-bg); color: var(--fg); font: inherit; width: 100%; }
@media (max-width: 760px) { .opt-row { grid-template-columns: 1fr; } }

dialog { border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--fg); padding: 1.25rem; width: min(420px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(0,0,0,.45); }
dialog form { display: grid; gap: .8rem; }
dialog label { display: grid; gap: .25rem; color: var(--muted); font-size: .85rem; }
dialog label.inline { display: flex; align-items: center; gap: .5rem; }
dialog input:not([type=checkbox]) { padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 3px; background: var(--input-bg); color: var(--fg); font: inherit; }
.dialog-actions { display: flex; justify-content: flex-end; gap: .5rem; }

@media (max-width: 760px) {
  .sidebar { position: fixed; top: 56px; bottom: 0; left: 0; z-index: 9; transform: translateX(-100%); transition: transform .18s; box-shadow: 4px 0 16px rgba(0,0,0,.2); }
  .sidebar.open { transform: none; }
  .content { padding: 14px 16px; }
  .kv { grid-template-columns: 1fr; } .kv dt { text-align: left; }
}