:root {
  --bg: #0b1220;
  --bg-2: #111a2b;
  --panel: #151f33;
  --panel-2: #1a2540;
  --line: rgba(148, 163, 184, 0.16);
  --text: #e8eef9;
  --muted: #93a0b8;
  --accent: #00d4aa;
  --accent-2: #3aa0ff;
  --warn: #f0b429;
  --danger: #ff6b7a;
  --online: #00d4aa;
  --offline: #6b7280;
  --sans: "DM Sans", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  font-family: var(--sans);
  background:
    radial-gradient(900px 500px at 0% 0%, rgba(0, 212, 170, 0.08), transparent 50%),
    radial-gradient(700px 480px at 100% 0%, rgba(58, 160, 255, 0.08), transparent 45%),
    var(--bg);
}

.shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--bg-2);
  border-right: 1px solid var(--line);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand-block {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 4px 8px;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 700;
  background: linear-gradient(145deg, #00d4aa, #0f8f7a);
  color: #041510;
}
.brand-name { font-weight: 700; letter-spacing: -0.02em; }
.brand-sub { color: var(--muted); font-size: 0.78rem; }

.conn-box {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.18);
}
.conn-box .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--offline);
  flex: 0 0 auto;
}
.conn-box.live .dot {
  background: var(--online);
  box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.2);
}
.conn-box.down .dot { background: var(--danger); }
.conn-title { font-size: 0.82rem; font-weight: 650; }
.conn-sub { font-size: 0.68rem; color: var(--muted); word-break: break-all; }

.nav { display: flex; flex-direction: column; gap: 6px; }
.nav-item {
  border: 0;
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 11px 12px;
  border-radius: 10px;
  font: inherit;
  cursor: pointer;
  display: flex;
  gap: 10px;
  align-items: center;
}
.nav-item:hover { background: rgba(255,255,255,0.04); color: var(--text); }
.nav-item.active {
  background: rgba(0, 212, 170, 0.12);
  color: var(--accent);
}
.nav-ico { width: 1.2rem; opacity: 0.85; }
.sidebar-foot { margin-top: auto; padding: 8px; display: grid; gap: 8px; }

.main { padding: 22px 24px 36px; min-width: 0; }
.view { display: none; }
.view.active { display: block; }

.page-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.page-head h1 {
  margin: 0;
  font-size: 1.7rem;
  letter-spacing: -0.03em;
}
.lede { margin: 6px 0 0; color: var(--muted); }
.head-actions { display: flex; gap: 8px; flex-wrap: wrap; }

input[type="search"], select, .btn {
  font: inherit;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 10px 12px;
}
input[type="search"] { min-width: 220px; }
.btn { cursor: pointer; }
.btn:hover { border-color: rgba(0, 212, 170, 0.35); }
.btn.primary {
  background: var(--accent);
  color: #042019;
  border-color: transparent;
  font-weight: 650;
}

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.stat .label { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.stat .value { margin-top: 6px; font-size: 1.55rem; font-weight: 700; font-family: var(--mono); }

.split {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 12px;
  min-height: 620px;
}
.manage-split {
  grid-template-columns: 1fr 1.2fr;
  min-height: auto;
}
.form-block {
  display: grid;
  gap: 12px;
  padding: 14px;
}
.form-block label {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}
.field {
  font: inherit;
  font-family: var(--mono);
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  padding: 10px 12px;
  width: 100%;
}
.table-wrap { overflow: auto; max-height: 70vh; }
.btn.danger {
  background: rgba(255, 107, 122, 0.15);
  color: var(--danger);
  border-color: rgba(255, 107, 122, 0.35);
}
.btn.small { padding: 7px 10px; font-size: 0.8rem; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.login-mask {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(8, 12, 20, 0.72);
  display: grid; place-items: center;
}
.login-mask.hidden { display: none; }
.login-card {
  width: min(360px, 92vw);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  display: grid;
  gap: 10px;
}
.login-card h2 { margin: 0; }
.login-err { color: var(--danger); min-height: 1.2em; font-size: 0.9rem; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.panel-head h2 { margin: 0; font-size: 0.92rem; }

.device-list { max-height: calc(100vh - 280px); overflow: auto; }
.device-row {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: inherit;
  text-align: left;
  padding: 12px 14px;
  cursor: pointer;
  font: inherit;
  display: grid;
  gap: 4px;
}
.device-row:hover { background: rgba(255,255,255,0.03); }
.device-row.selected { background: rgba(0, 212, 170, 0.08); }
.device-row .top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
}
.device-row .name { font-weight: 600; }
.device-row .id { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); }
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
  background: var(--offline);
}
.dot.on {
  background: var(--online);
  box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.18);
}

.device-detail { padding: 0; }
.device-detail > #detailBody { padding: 16px; }
.empty, .hidden { padding: 28px; color: var(--muted); }
.hidden { display: none !important; }

.detail-hero {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.detail-title-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.detail-title-row h2 { margin: 0; font-size: 1.25rem; }
.detail-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.action-feedback {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #0a101c;
  overflow: hidden;
}
.action-feedback.ok { border-color: rgba(0, 212, 170, 0.35); }
.action-feedback.bad { border-color: rgba(255, 107, 122, 0.4); }
.action-feedback.wait { border-color: rgba(240, 180, 41, 0.35); }
.af-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px 0;
  flex-wrap: wrap;
}
.af-label {
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.af-title {
  margin-top: 4px;
  font-weight: 700;
  font-size: 1rem;
}
.af-meta { color: var(--muted); font-size: 0.75rem; }
.af-summary {
  padding: 8px 14px 0;
  color: #cfe7ff;
  font-size: 0.88rem;
}
.af-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 10px;
  border-top: 1px solid var(--line);
}
.af-col {
  min-width: 0;
  padding: 12px 14px 14px;
}
.af-col + .af-col {
  border-left: 1px solid var(--line);
}
.af-col-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 8px;
  font-weight: 700;
}
.af-col:first-child .af-col-title { color: #7eb6ff; }
.af-col:last-child .af-col-title { color: #7de2c4; }
.af-body {
  margin: 0;
  padding: 0;
  max-height: 280px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.74rem;
  line-height: 1.5;
  white-space: pre-wrap;
  color: #d7e3f7;
  background: transparent;
}
@media (max-width: 900px) {
  .af-split { grid-template-columns: 1fr; }
  .af-col + .af-col { border-left: 0; border-top: 1px solid var(--line); }
}

.status-chip {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(107, 114, 128, 0.25);
  color: #cbd5e1;
}
.status-chip.online { background: rgba(0, 212, 170, 0.15); color: var(--online); }
.status-chip.active { background: rgba(58, 160, 255, 0.15); color: var(--accent-2); }
.status-chip.alt.inactive { background: rgba(255, 107, 122, 0.12); color: var(--danger); }

.state-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
  max-width: 520px;
}
.state-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  background: var(--panel-2);
}
.state-card .state-label {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.state-card .state-value {
  margin-top: 6px;
  font-size: 1.15rem;
  font-weight: 750;
  font-family: var(--mono);
}
.state-card .state-help {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.75rem;
}
.state-card.is-online { border-color: rgba(0, 212, 170, 0.45); }
.state-card.is-online .state-value { color: var(--online); }
.state-card.is-offline .state-value { color: #9aa3b5; }
.state-card.is-enabled { border-color: rgba(58, 160, 255, 0.45); }
.state-card.is-enabled .state-value { color: var(--accent-2); }
.state-card.is-disabled { border-color: rgba(255, 107, 122, 0.45); }
.state-card.is-disabled .state-value { color: var(--danger); }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.metric {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}
.metric .k { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; }
.metric .v { margin-top: 6px; font-family: var(--mono); font-size: 1.02rem; font-weight: 600; }

.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}
.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 10px 12px;
  cursor: pointer;
  font: inherit;
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.info-grid {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 8px 12px;
  font-size: 0.92rem;
}
.info-grid dt { color: var(--muted); }
.info-grid dd { margin: 0; font-family: var(--mono); font-size: 0.82rem; word-break: break-all; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.data-table th, .data-table td {
  text-align: left;
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.data-table th {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.tiny { font-size: 0.75rem; }

.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}
.badge.acked { background: rgba(0,212,170,.15); color: var(--online); }
.badge.sent, .badge.queued { background: rgba(240,180,41,.14); color: var(--warn); }
.badge.failed, .badge.expired { background: rgba(255,107,122,.14); color: var(--danger); }

.code {
  margin: 0;
  padding: 12px;
  background: #0a101c;
  color: #d7e3f7;
  border-radius: 12px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.5;
  white-space: pre-wrap;
}
.code.log { min-height: 220px; max-height: 320px; }
.code .ok { color: #7de2c4; }
.code .bad { color: #ff8b97; }
.code .chg { color: #f0b429; }

.pill-mini {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  background: rgba(0,212,170,.1);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 650;
}

.api-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.api-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}
.api-card h3 { margin: 0 0 4px; font-size: 1rem; }
.api-card .method { font-family: var(--mono); font-size: 0.74rem; color: var(--accent-2); }
.api-card .desc { color: var(--muted); font-size: 0.86rem; margin: 8px 0; }
.api-card .feedback {
  margin-top: 10px;
  background: #0a101c;
  border-radius: 10px;
  padding: 10px;
  font-family: var(--mono);
  font-size: 0.74rem;
  white-space: pre-wrap;
  min-height: 64px;
  color: #d7e3f7;
}

@media (max-width: 1100px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .split, .stats-strip, .metric-grid, .api-grid { grid-template-columns: 1fr; }
}