:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --line: #e4e6ea;
  --line-strong: #c8ccd4;
  --text: #111318;
  --muted: #5c5f66;
  --ok: #0d7b47;
  --ok-bg: #e9f9ef;
  --down: #b42318;
  --down-bg: #feecea;
  --warn: #b54708;
  --warn-bg: #fff4e8;
  --accent: #1d4ed8;
}

body[data-theme="dark"] {
  --bg: #1c1d21;
  --panel: #242529;
  --line: #35363b;
  --line-strong: #46474d;
  --text: #e1e2e5;
  --muted: #9b9ca1;
  --ok: #64d69f;
  --ok-bg: #1a3028;
  --down: #ff8a7a;
  --down-bg: #3a2422;
  --warn: #ffbb6a;
  --warn-bg: #352c1e;
  --accent: #7aa2ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Geist", "Avenir Next", "PingFang SC", "Segoe UI", sans-serif;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, rgba(120, 130, 220, 0.06), transparent),
    radial-gradient(ellipse 50% 60% at 75% 70%, rgba(60, 180, 170, 0.05), transparent),
    radial-gradient(ellipse 40% 40% at 60% 10%, rgba(180, 120, 220, 0.04), transparent);
}

body[data-theme="dark"]::before {
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, rgba(120, 130, 220, 0.04), transparent),
    radial-gradient(ellipse 50% 60% at 75% 70%, rgba(60, 180, 170, 0.03), transparent),
    radial-gradient(ellipse 40% 40% at 60% 10%, rgba(180, 120, 220, 0.03), transparent);
}

.shell-head,
.shell-main {
  max-width: 1240px;
  margin: 0 auto;
  padding-left: 18px;
  padding-right: 18px;
  position: relative;
  z-index: 1;
}

.shell-head {
  padding-top: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
  align-self: center;
}

h1 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--muted);
  margin-left: 2px;
}

.auth {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-icon {
  cursor: pointer;
  color: var(--muted);
  transition: color 120ms ease;
}
.theme-icon:hover { color: var(--text); }

.auth-label {
  font-size: 0.82rem;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  transition: color 120ms ease;
}
.auth-label:hover { color: var(--text); }

.toolbar input[type="text"] {
  min-height: 34px;
  padding: 0 10px;
  border-radius: 9px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--text);
}

.toolbar input[type="text"]:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 30%, transparent);
  outline-offset: 0;
}

.btn {
  min-height: 34px;
  padding: 0 11px;
  border-radius: 9px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font: inherit;
}

.btn:hover {
  border-color: var(--accent);
}

.btn-primary {
  background: var(--text);
  border-color: var(--text);
  color: var(--panel);
}

.btn-danger {
  background: var(--down);
  border-color: var(--down);
  color: #fff;
}

.btn-danger:hover {
  opacity: 0.85;
}

.auth-state {
  min-width: 62px;
  text-align: right;
  color: var(--muted);
  font-size: 0.84rem;
}

.shell-main {
  padding-top: 12px;
  padding-bottom: 28px;
  display: grid;
  gap: 12px;
}

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
}

#searchInput {
  min-width: 240px;
}

.checkbox-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.checkbox-wrap input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 13px;
  height: 13px;
  min-height: 0;
  margin: 0;
  padding: 0;
  border: 1.5px solid var(--line-strong);
  border-radius: 3px;
  background: var(--panel);
  box-sizing: border-box;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}

.checkbox-wrap input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-wrap input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 2.5px;
  top: 0px;
  width: 4px;
  height: 7.5px;
  border: solid #fff;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

.stats-inline {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

.stat-chip {
  background: transparent;
  font-size: 0.79rem;
  color: var(--muted);
}

.stat-chip b {
  color: var(--text);
  margin-left: 4px;
}

.stat-chip.online b {
  color: var(--ok);
}

.stat-chip.offline b {
  color: var(--down);
}

.content-area {
  display: block;
}

.agents-list {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  overflow: hidden;
}

/* ---- row grid ---- */
.row {
  display: grid;
  grid-template-columns: minmax(140px, 1.5fr) repeat(3, 100px) 180px 150px 72px;
  align-items: center;
  gap: 0 16px;
  padding: 14px 16px 18px;
  min-height: 56px;
  border-bottom: 1px solid var(--line);
  transition: background 120ms ease;
}

.row:last-child { border-bottom: none; }

.row-header {
  min-height: 42px;
  padding-top: 10px;
  padding-bottom: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: color-mix(in srgb, var(--bg) 50%, var(--panel));
}

.row.clickable { cursor: pointer; }
.row.clickable:hover { background: color-mix(in srgb, var(--accent) 4%, var(--panel)); }
.row.selected { background: color-mix(in srgb, var(--accent) 6%, var(--panel)); padding-bottom: 20px; }

.list-empty {
  padding: 32px 16px;
  text-align: center;
  color: var(--muted);
}

/* ---- columns ---- */
.col-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.84rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--muted);
}

.dot.status-up { background: var(--ok); }
.dot.status-down { background: var(--down); }
.dot.status-deleted { background: var(--warn); }

.col-metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.mini-label {
  display: none;
  font-weight: 600;
  color: var(--muted);
  margin-right: 4px;
}

.mini-val {
  font-size: 0.82rem;
  font-weight: 620;
  font-variant-numeric: tabular-nums;
}

.mini-bar {
  height: 3px;
  background: color-mix(in srgb, var(--line) 60%, transparent);
  border-radius: 2px;
  overflow: hidden;
}

.mini-bar > span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 300ms ease;
}

.col-net {
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  white-space: nowrap;
}

.col-time {
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.col-action {
  text-align: right;
}

.action-btn {
  min-height: 24px;
  padding: 0 8px;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.72rem;
}

.action-btn:hover {
  border-color: var(--down);
  color: var(--down);
}

/* ---- inline detail (24h charts) ---- */
.inline-detail {
  grid-column: 1 / -1;
  padding: 20px 0 0;
  margin-top: 8px;
}

.inline-detail .chart-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.chart-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
}

.chart-card h4 {
  margin: 0 0 4px;
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 600;
}

.chart-headline {
  font-size: 0.86rem;
  margin-bottom: 6px;
  font-weight: 620;
}

.detail-footer {
  display: flex;
  gap: 20px;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--muted);
}

.sparkline {
  width: 100%;
  height: 84px;
}

.chart-empty {
  font-size: 0.86rem;
  color: var(--muted);
  min-height: 84px;
  display: flex;
  align-items: center;
}

@media (max-width: 1120px) {
  .inline-detail .chart-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .shell-head {
    flex-wrap: wrap;
    gap: 10px;
  }

  .auth {
    margin-left: 0;
    flex-wrap: wrap;
  }

  .toolbar {
    flex-wrap: wrap;
  }

  .stats-inline {
    width: 100%;
    margin-left: 0;
  }

  .row-header { display: none; }
  .mini-label { display: inline; }

  .row {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px 12px;
    padding: 12px 16px;
    min-height: auto;
  }

  .col-name { grid-column: 1 / -1; }
  .col-net { display: none; }
  .col-time { grid-column: 1 / 3; }
  .col-action { grid-column: 3; }

  .inline-detail .chart-grid {
    grid-template-columns: 1fr;
  }
}

/* ---- login overlay ---- */
.hidden {
  display: none !important;
}

.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
}

.login-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 32px;
  width: 340px;
  max-width: 90vw;
  display: grid;
  gap: 14px;
}

.login-card h2 {
  margin: 0;
  font-size: 1.15rem;
}

.login-card input {
  min-height: 38px;
  padding: 0 12px;
  border-radius: 9px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.login-card input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 30%, transparent);
  outline-offset: 0;
}

.login-error {
  color: var(--down);
  font-size: 0.84rem;
  min-height: 1.2em;
}

.login-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}