:root {
  --bg: #0a0d13; --panel: #11161f; --panel-2: #161c27; --border: #1e2531; --border-2: #2a3342;
  --text: #d9dee7; --muted: #7c8698; --strong: #f3f5f9;
  --up: #1fbf75; --up-bg: rgba(31,191,117,.12); --down: #f0476a; --down-bg: rgba(240,71,106,.12);
  --accent: #4c8dff; --accent-bg: rgba(76,141,255,.14); --warn: #f5a524; --warn-bg: rgba(245,165,36,.14);
  --grid: #161c26; --shadow: 0 8px 24px rgba(0,0,0,.4);
  --radius: 10px; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #f4f6fa; --panel: #ffffff; --panel-2: #f1f4f9; --border: #e3e8ef; --border-2: #d3dae4;
  --text: #1d2433; --muted: #66718a; --strong: #0b1220;
  --up: #0f9d63; --up-bg: rgba(15,157,99,.1); --down: #d93556; --down-bg: rgba(217,53,86,.1);
  --accent: #2f6fe4; --accent-bg: rgba(47,111,228,.1); --warn: #c77d00; --warn-bg: rgba(199,125,0,.12);
  --grid: #eef1f6; --shadow: 0 8px 24px rgba(20,30,50,.12);
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 13px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
body { min-height: 100vh; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
input, select, textarea { background: var(--panel-2); border: 1px solid var(--border); border-radius: 7px; padding: 7px 9px; outline: none; width: 100%; }
textarea { resize: vertical; min-height: 70px; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
input[type=checkbox], input[type=radio] { width: auto; accent-color: var(--accent); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 12px; background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }
h1, h2, h3, h4 { margin: 0; color: var(--strong); }
[hidden] { display: none !important; }
.up { color: var(--up); } .down { color: var(--down); } .muted { color: var(--muted); } .warn-t { color: var(--warn); }
.num, td, .kv b, .stat-v { font-variant-numeric: tabular-nums; }
.spacer { flex: 1; }
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 10px; }
.small { font-size: 12px; } .tiny { font-size: 11px; }

/* ---------------- header */
.header { position: sticky; top: 0; z-index: 20; background: var(--panel); border-bottom: 1px solid var(--border); }
.hdr-top { display: flex; align-items: center; gap: 10px; padding: 10px 18px 6px; flex-wrap: wrap; }
.hdr-title { display: flex; align-items: baseline; gap: 10px; margin-right: auto; }
.hdr-title h1 { font-size: 17px; letter-spacing: .1px; display: flex; align-items: center; gap: 9px; }
.hdr-title .logo { width: 20px; height: 20px; border-radius: 6px; background: linear-gradient(135deg, var(--accent), #8a5cff); display: inline-block; }
.hdr-title .sub { color: var(--muted); font-size: 13px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 99px; border: 1px solid var(--border-2); background: var(--panel-2); font-size: 12px; white-space: nowrap; }
.pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.pill.ok i { background: var(--up); } .pill.bad i { background: var(--down); } .pill.wait i { background: var(--warn); }
button.pill:hover { border-color: var(--muted); }
.pill.mode { font-weight: 700; letter-spacing: .5px; }
.pill.mode.paper { color: var(--warn); background: var(--warn-bg); border-color: rgba(245,165,36,.45); }
.pill.mode.testnet { color: var(--accent); background: var(--accent-bg); border-color: rgba(76,141,255,.45); }
.pill.off { color: var(--down); }
.nav { display: flex; gap: 2px; padding: 0 12px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { padding: 8px 12px 10px; color: var(--muted); border-radius: 7px 7px 0 0; white-space: nowrap; font-weight: 500; position: relative; }
.nav a:hover { color: var(--text); text-decoration: none; }
.nav a.active { color: var(--strong); background: var(--panel-2); }
.nav a.active::after { content: ''; position: absolute; left: 10px; right: 10px; bottom: 0; height: 2px; background: var(--accent); border-radius: 2px; }
.nav a .badge-n { margin-left: 5px; font-size: 10px; background: var(--accent); color: #fff; border-radius: 99px; padding: 0 5px; }
.user-menu { position: relative; }
.avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--accent-bg); color: var(--accent); display: grid; place-items: center; font-weight: 700; overflow: hidden; }
.avatar img { width: 100%; height: 100%; }
.dropdown { position: absolute; right: 0; top: 36px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); min-width: 220px; padding: 6px; z-index: 40; }
.dropdown button, .dropdown .dd-item { display: block; width: 100%; text-align: left; padding: 8px 10px; border-radius: 6px; }
.dropdown button:hover { background: var(--panel-2); }

/* ---------------- page */
.page { padding: 16px 18px 40px; max-width: 1600px; margin: 0 auto; }
.page.full { max-width: none; padding: 6px; }
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.page-head h2 { font-size: 18px; }
.page-head p { margin: 0; color: var(--muted); }
.grid { display: grid; gap: 12px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.g-main { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; min-width: 0; }
.card.flush { padding: 0; overflow: hidden; }
.card-h { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.card-h h3 { font-size: 14px; }
.card-h .spacer + * { margin-left: auto; }
.card.flush .card-h { padding: 12px 14px 0; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-l { color: var(--muted); font-size: 12px; }
.stat-v { font-size: 22px; font-weight: 700; color: var(--strong); }
.stat-s { font-size: 12px; }
.kv { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); padding: 2px 0; }
.kv b { color: var(--text); font-weight: 500; text-align: right; }
.kv b.up, .kv .up { color: var(--up); } .kv b.down, .kv .down { color: var(--down); }
.divider { height: 1px; background: var(--border); margin: 10px 0; }
.empty { color: var(--muted); padding: 24px; text-align: center; }
.list { display: flex; flex-direction: column; }
.list > .li { padding: 9px 0; border-top: 1px solid var(--border); display: flex; gap: 10px; align-items: flex-start; }
.list > .li:first-child { border-top: 0; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--border-2); border-radius: 7px; padding: 7px 13px; background: var(--panel-2); color: var(--text); font-weight: 500; white-space: nowrap; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.good { background: var(--up); border-color: var(--up); color: #04140c; }
.btn.danger { background: var(--down); border-color: var(--down); color: #fff; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 4px 9px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }
.link { color: var(--accent); padding: 2px 6px; }
.link.danger { color: var(--down); }
.seg { display: inline-flex; background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 2px; }
.seg button { padding: 5px 12px; border-radius: 6px; color: var(--muted); }
.seg button.active { background: var(--border); color: var(--strong); }
:root[data-theme="light"] .seg button.active { background: var(--panel); box-shadow: 0 1px 3px rgba(0,0,0,.1); }

/* tables */
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th { position: sticky; top: 0; background: var(--panel); color: var(--muted); font-weight: 500; font-size: 11px; text-align: left; padding: 8px 10px; white-space: nowrap; border-bottom: 1px solid var(--border); }
td { padding: 8px 10px; border-top: 1px solid var(--border); white-space: nowrap; }
tbody tr:first-child td { border-top: 0; }
tr:hover td { background: var(--panel-2); }
td.wrap { white-space: normal; }
.tag { display: inline-block; padding: 1px 7px; border-radius: 4px; font-size: 11px; font-weight: 600; background: var(--panel-2); color: var(--muted); }
.tag.up { background: var(--up-bg); color: var(--up); } .tag.down { background: var(--down-bg); color: var(--down); }
.tag.warn { background: var(--warn-bg); color: var(--warn); } .tag.acc { background: var(--accent-bg); color: var(--accent); }
.pill.up { background: var(--up-bg); } .pill.down { background: var(--down-bg); }

/* forms */
.field { display: flex; flex-direction: column; gap: 4px; }
.field > label, .lbl { color: var(--muted); font-size: 12px; }
.field small, .help { color: var(--muted); font-size: 11px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 12px; }
.form-grid .span2 { grid-column: span 2; }
.chk { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); cursor: pointer; }
.inp-group { display: flex; gap: 4px; }
.inp-group input { flex: 1; min-width: 0; }
.switch { position: relative; width: 36px; height: 20px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span { position: absolute; inset: 0; background: var(--border-2); border-radius: 20px; transition: .2s; cursor: pointer; }
.switch span::before { content: ''; position: absolute; width: 14px; height: 14px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: .2s; }
.switch input:checked + span { background: var(--up); }
.switch input:checked + span::before { transform: translateX(16px); }

/* control center */
.ctrl { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel-2); }
.ctrl .ctrl-t { font-weight: 600; color: var(--strong); }
.ctrl .ctrl-s { color: var(--muted); font-size: 12px; }
.big-state { font-size: 12px; font-weight: 700; letter-spacing: .5px; padding: 3px 9px; border-radius: 6px; }
.big-state.on { background: var(--up-bg); color: var(--up); } .big-state.off { background: var(--down-bg); color: var(--down); }

/* heatmap */
.heat { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; }
.tile { border-radius: 8px; padding: 10px; min-height: 76px; color: #fff; cursor: pointer; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid rgba(0,0,0,.05); }
.tile b { font-size: 13px; } .tile .tv { font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; }
.tile small { opacity: .85; font-size: 11px; }
.tile.sel { outline: 2px solid var(--accent); outline-offset: 1px; }

/* news */
.news-item { display: flex; gap: 10px; padding: 9px 0; border-top: 1px solid var(--border); }
.news-item:first-child { border-top: 0; }
.imp { flex: none; width: 26px; height: 26px; border-radius: 6px; display: grid; place-items: center; font-weight: 700; font-size: 12px; background: var(--panel-2); color: var(--muted); }
.imp.i5, .imp.i4 { background: var(--down-bg); color: var(--down); }
.imp.i3 { background: var(--warn-bg); color: var(--warn); }
.news-item a { color: var(--text); font-weight: 500; }
.news-item .meta { color: var(--muted); font-size: 11px; margin-top: 2px; }

/* chat */
.chat { display: flex; flex-direction: column; height: calc(100vh - 190px); min-height: 420px; }
.chat-log { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; padding: 4px 4px 12px; }
.msg { max-width: 820px; padding: 10px 13px; border-radius: 12px; white-space: pre-wrap; line-height: 1.5; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg.assistant { align-self: flex-start; background: var(--panel); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg .meta { font-size: 10px; opacity: .65; margin-top: 4px; }
.chat-in { display: flex; gap: 8px; padding-top: 10px; border-top: 1px solid var(--border); }
.chat-in textarea { min-height: 44px; max-height: 160px; }
.suggest { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.suggest button { border: 1px solid var(--border-2); border-radius: 99px; padding: 4px 10px; font-size: 12px; color: var(--muted); }
.suggest button:hover { color: var(--text); border-color: var(--muted); }

/* activity */
.act { display: grid; grid-template-columns: 150px 74px 1fr; gap: 10px; padding: 6px 10px; border-top: 1px solid var(--border); font-size: 12.5px; align-items: baseline; }
.act:first-child { border-top: 0; }
.act .t { color: var(--muted); font-variant-numeric: tabular-nums; }
.act.error { background: var(--down-bg); } .act.warn .m { color: var(--warn); } .act.success .m { color: var(--up); }

/* misc */
.bar { height: 6px; background: var(--panel-2); border-radius: 3px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); }
.prob { display: flex; height: 8px; border-radius: 4px; overflow: hidden; }
.prob i { display: block; height: 100%; }
.skeleton { height: 12px; border-radius: 4px; background: linear-gradient(90deg, var(--panel-2), var(--border), var(--panel-2)); background-size: 200% 100%; animation: sh 1.2s infinite; margin: 6px 0; }
@keyframes sh { to { background-position: -200% 0; } }
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { padding: 2px 8px; border-radius: 4px; font-size: 12px; border: 1px solid var(--border); font-variant-numeric: tabular-nums; }
.callout { padding: 10px 12px; border-radius: 8px; background: var(--panel-2); border: 1px solid var(--border); }
.callout.warn { background: var(--warn-bg); border-color: rgba(245,165,36,.35); }
.callout.bad { background: var(--down-bg); border-color: rgba(240,71,106,.35); }
.callout.good { background: var(--up-bg); border-color: rgba(31,191,117,.35); }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: s; position: relative; padding: 0 0 12px 34px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 22px; height: 22px; border-radius: 50%; background: var(--accent-bg); color: var(--accent); display: grid; place-items: center; font-weight: 700; font-size: 12px; }
.steps li.done::before { content: '✓'; background: var(--up-bg); color: var(--up); }
.mini-chart { height: 220px; }

/* modal & toasts */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: grid; place-items: center; z-index: 100; padding: 16px; }
.modal-card { width: min(460px, 100%); max-height: calc(100vh - 32px); overflow-y: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 18px; box-shadow: var(--shadow); }
.modal-card h3 { margin: 0 0 12px; font-size: 15px; }
#modalBody { display: flex; flex-direction: column; gap: 8px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 120; }
.toast { background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--accent); padding: 10px 14px; border-radius: 8px; max-width: 380px; box-shadow: var(--shadow); animation: tin .2s ease; }
.toast.ok { border-left-color: var(--up); } .toast.err { border-left-color: var(--down); } .toast.warn { border-left-color: var(--warn); }
@keyframes tin { from { transform: translateY(8px); opacity: 0; } }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 4px; }

@media (max-width: 1100px) {
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g3, .g-main { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .g2, .g4, .form-grid { grid-template-columns: 1fr; }
  .form-grid .span2 { grid-column: auto; }
  .page { padding: 12px 10px 30px; }
  .hdr-top { padding: 8px 10px 4px; }
  .hdr-title .sub { display: none; }
  .act { grid-template-columns: 1fr; gap: 2px; }
}