:root {
  --bg: #0f1419;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #3b82f6;
  --ok: #3fb950;
  --err: #f85149;
  --warn: #d29922;
  font-family: "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); background: var(--panel);
  position: sticky; top: 0; z-index: 100;
}
.brand { font-weight: 700; color: var(--text); font-size: 1.1rem; flex: 1; min-width: 0; }
.user {
  color: var(--muted); font-size: 0.9rem; display: flex; gap: 0.65rem; align-items: center;
  margin-left: auto; flex-shrink: 0;
}
.user-name { display: none; }
@media (min-width: 640px) {
  .user-name { display: inline; }
}

/* Hamburger */
.isk-nav-toggle {
  flex: 0 0 auto; width: 2.4rem; height: 2.4rem; margin: 0; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; color: var(--text);
}
.isk-nav-toggle:hover { border-color: var(--muted); }
.isk-nav-toggle-bars,
.isk-nav-toggle-bars::before,
.isk-nav-toggle-bars::after {
  display: block; width: 1.1rem; height: 2px; background: currentColor; border-radius: 1px;
  position: relative; transition: transform 0.2s, opacity 0.2s;
}
.isk-nav-toggle-bars::before,
.isk-nav-toggle-bars::after {
  content: ""; position: absolute; left: 0;
}
.isk-nav-toggle-bars::before { top: -6px; }
.isk-nav-toggle-bars::after { top: 6px; }
body.isk-nav-open .isk-nav-toggle-bars { background: transparent; }
body.isk-nav-open .isk-nav-toggle-bars::before { top: 0; transform: rotate(45deg); }
body.isk-nav-open .isk-nav-toggle-bars::after { top: 0; transform: rotate(-45deg); }

/* Backdrop + drawer */
.isk-nav-backdrop {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0; transition: opacity 0.2s ease;
  pointer-events: none;
}
.isk-nav-backdrop.show { opacity: 1; pointer-events: auto; }
.isk-nav-drawer {
  position: fixed !important; top: 0; left: 0; bottom: 0; z-index: 2010;
  width: min(18.5rem, 88vw); max-width: 90vw;
  margin: 0; padding: 0;
  background: var(--panel); border-right: 1px solid var(--border);
  display: flex !important; flex-direction: column;
  transform: translate3d(-110%, 0, 0);
  transition: transform 0.22s ease;
  box-shadow: none;
  visibility: hidden;
  pointer-events: none;
}
.isk-nav-drawer.open {
  transform: translate3d(0, 0, 0);
  visibility: visible;
  pointer-events: auto;
  box-shadow: 8px 0 24px rgba(0, 0, 0, 0.35);
}
.isk-nav-drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}
.isk-nav-drawer-title { font-weight: 700; font-size: 1rem; }
.isk-nav-links {
  flex: 1; overflow-y: auto; padding: 0.5rem 0.65rem 1rem;
  display: flex; flex-direction: column; gap: 0.15rem;
}
.isk-nav-links a {
  display: block; padding: 0.7rem 0.85rem; border-radius: 6px;
  color: var(--muted); font-size: 0.98rem;
}
.isk-nav-links a:hover { background: var(--bg); color: var(--text); text-decoration: none; }
.isk-nav-links a.on {
  background: #1f2a3a; color: var(--text); font-weight: 600;
}
.isk-nav-section {
  margin: 0.85rem 0.5rem 0.25rem; padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--muted);
}
.isk-nav-drawer-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
  padding: 0.85rem 1rem; border-top: 1px solid var(--border);
  color: var(--muted); font-size: 0.85rem;
}
body.isk-nav-open { overflow: hidden; }
.wrap { max-width: 1200px; margin: 1.25rem auto; padding: 0 1rem 2rem; }
.wrap:has(#tagsTable),
.wrap:has(#devicesTable) { max-width: min(1500px, 100%); }
.foot {
  text-align: center; color: var(--muted); font-size: 0.8rem; padding: 1.5rem;
  line-height: 1.45; border-top: 1px solid var(--border); margin-top: 0.5rem;
}
.foot-app { font-weight: 600; color: var(--text); opacity: 0.9; }
.foot-copy { margin-top: 0.2rem; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 1rem 1.15rem; margin: 1rem 0;
}
.isk-table-card { overflow: hidden; }
.isk-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}
.isk-table-wrap > table { margin: 0; }
.isk-tags-table th,
.isk-tags-table td { vertical-align: top; }
.isk-tags-name,
.isk-tags-device { min-width: 8rem; max-width: 16rem; }
.isk-tags-name-main { display: block; word-break: break-word; }
.isk-tags-meta { display: block; font-size: 0.78rem; line-height: 1.25; margin-top: 0.15rem; }
.isk-tags-num { white-space: nowrap; }
.isk-tags-check { width: 2.5rem; text-align: center; }
.isk-tags-table .table-actions { flex-wrap: wrap; }
h1 { font-size: 1.35rem; margin: 0 0 0.5rem; }
h1.isk-page-title-center { text-align: center; }
h2 { font-size: 1.1rem; margin: 0 0 0.75rem; }
.muted { color: var(--muted); }
.flash { padding: 0.65rem 0.85rem; border-radius: 6px; margin-bottom: 1rem; }
.flash.ok { background: #12261a; color: var(--ok); border: 1px solid #1a3d28; }
.flash.err { background: #2d1215; color: var(--err); border: 1px solid #5c1f24; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.45rem 0.5rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
label { display: block; font-size: 0.8rem; color: var(--muted); margin-top: 0.65rem; }
input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):not([type="submit"]):not([type="button"]):not([type="image"]),
select, textarea {
  width: 100%; max-width: 28rem; margin-top: 0.2rem; padding: 0.45rem 0.55rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text);
}
input[type="checkbox"],
input[type="radio"] {
  width: auto;
  max-width: none;
  margin: 0;
  padding: 0;
  vertical-align: middle;
  accent-color: var(--accent);
}
label:has(> input[type="checkbox"]),
label:has(> input[type="radio"]),
.isk-check-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  width: auto;
  max-width: none;
  color: var(--text);
  cursor: pointer;
  font-size: 0.9rem;
}
button, .btn {
  display: inline-block; margin-top: 0.85rem; margin-right: 0.4rem;
  background: var(--accent); color: #fff; border: none; border-radius: 6px;
  padding: 0.45rem 0.9rem; font-weight: 500; cursor: pointer; text-decoration: none;
}
a.btn { color: #fff; text-decoration: none; }
a.btn:hover { color: #fff; text-decoration: none; opacity: 0.92; }
button.secondary, .btn.secondary { background: #21262d; border: 1px solid var(--border); color: var(--text); }
button.danger, .btn.danger { background: #8b1e26; }
button.btn-sm, .btn.btn-sm, a.btn.btn-sm {
  margin-top: 0; padding: 0.25rem 0.55rem; font-size: 0.82rem; line-height: 1.3;
}
td .table-actions {
  display: inline-flex; flex-direction: row; flex-wrap: nowrap; align-items: center;
  gap: 0.35rem; max-width: none;
}
td .table-actions .btn,
td .table-actions button {
  margin: 0; flex: 0 0 auto; display: inline-flex; align-items: center;
}
.ping-status {
  display: inline-block; min-width: 2rem; text-align: center;
  font-size: 0.82rem; font-weight: 600; flex: 0 0 auto;
}
.ping-status.ok { color: var(--ok); }
.ping-status.err { color: var(--err); }
.ping-status.wait { color: var(--muted); }
th.col-actions, td.col-actions { width: 1%; white-space: nowrap; vertical-align: middle; }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; }
.row > div { flex: 1; min-width: 10rem; }
.login-box { max-width: 22rem; margin: 4rem auto; }
.stat { font-size: 1.4rem; font-weight: 600; }
.quality-ok { color: var(--ok); }
.quality-error, .quality-timeout { color: var(--err); }
.badge { display: inline-block; padding: 0.15rem 0.45rem; border-radius: 4px; font-size: 0.75rem; }
.badge.critical { background: #5c1f24; color: var(--err); }
.badge.warning { background: #3d2e0a; color: var(--warn); }
.badge.info { background: #1a2d4a; color: #58a6ff; }
.filter-bar select { max-width: 20rem; margin-top: 0.2rem; }
.filter-bar .btn-sm { margin-top: 0; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.isk-hidden-form { display: none; }
.isk-inline-toggle { display: inline; margin: 0; }
.isk-inline-toggle button { margin: 0; min-width: 3.2rem; }
button.toggle-on, .btn.toggle-on {
  background: #1a3d28; color: var(--ok); border: 1px solid #2ea043;
}
button.toggle-off, .btn.toggle-off {
  background: #2d1215; color: var(--err); border: 1px solid #8b1e26;
}
.page-head {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.75rem; margin-bottom: 0.5rem;
}
.page-head h1 { margin: 0; }
.page-head .btn { margin: 0; }
.page-head-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.page-head-actions .btn { margin: 0; }
.isk-modal {
  border: none; padding: 0; background: transparent;
  max-width: 36rem; width: calc(100% - 2rem);
}
.isk-modal.isk-modal-wide { max-width: min(52rem, calc(100% - 2rem)); }
.isk-modal::backdrop { background: rgba(0, 0, 0, 0.55); }
.isk-modal-panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 1rem 1.15rem 1.15rem; color: var(--text);
  max-height: min(90vh, 40rem); overflow: auto;
}
.isk-modal-head {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
  margin-bottom: 0.35rem;
}
.isk-modal-head h2 { margin: 0; }
.isk-modal-actions {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem;
}
.isk-modal-actions button { margin: 0; }
.isk-modal .row > div input,
.isk-modal .row > div select,
.isk-modal textarea { max-width: none; }

.isk-stats-grid { margin-bottom: 0.25rem; }
.isk-overview-toolbar { margin-top: 0.5rem; }
.isk-overview-toolbar-inner {
  display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 0.75rem;
}
.isk-overview-status {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; font-size: 0.9rem;
}
.isk-overview { display: flex; flex-direction: column; gap: 1rem; margin: 1rem 0; }
.isk-object-card {
  background: var(--panel); border: 2px solid var(--border); border-radius: 10px;
  padding: 1rem 1.1rem 1.15rem;
}
.isk-object-card.isk-object-empty { opacity: 0.45; }
.isk-object-head {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
  margin: 0 0 0.85rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border);
}
.isk-object-title {
  margin: 0; font-size: 1.15rem; font-weight: 700;
}
.isk-object-alarms {
  margin: 0; flex: 0 0 auto;
  background: #21262d; border: 1px solid var(--border); color: var(--muted);
  border-radius: 6px; padding: 0.3rem 0.65rem; font-size: 0.85rem; font-weight: 600;
  cursor: default;
}
.isk-object-alarms.has-alarms {
  background: #2d1215; border-color: #8b1e26; color: var(--err); cursor: pointer;
}
.isk-object-alarms.has-alarms:hover { opacity: 0.92; }
.isk-object-alarms:disabled { opacity: 0.55; cursor: default; }
.isk-object-alarms-count {
  display: inline-block; min-width: 1.1rem; text-align: center;
  font-variant-numeric: tabular-nums;
}
.isk-alarm-table { width: 100%; margin-top: 0.5rem; }
.isk-alarm-table th, .isk-alarm-table td { font-size: 0.88rem; }
.isk-tech-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 0.75rem;
  align-items: start;
}
.isk-tech-card {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 0.65rem 0.75rem 0.75rem;
}
.isk-tech-card.isk-tech-wide {
  grid-column: span 2;
}
.isk-tech-card.isk-tech-wide .isk-tag-list {
  display: grid; grid-template-columns: 1fr 1fr; column-gap: 1rem;
}
.isk-tech-card.isk-tech-empty { opacity: 0.5; }
.isk-tech-title {
  margin: 0 0 0.55rem; font-size: 0.82rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.03em; color: var(--muted);
}
.isk-tag-list { list-style: none; margin: 0; padding: 0; }
@media (max-width: 640px) {
  .isk-tech-card.isk-tech-wide { grid-column: span 1; }
  .isk-tech-card.isk-tech-wide .isk-tag-list { grid-template-columns: 1fr; }
}
.isk-tag-row {
  display: grid; grid-template-columns: 1fr auto auto; gap: 0.35rem 0.5rem;
  align-items: center; padding: 0.35rem 0; border-top: 1px solid var(--border);
}
.isk-tag-row:first-child { border-top: none; padding-top: 0; }
.isk-tag-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.92rem; }
.isk-tag-value {
  font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; min-width: 3.5rem;
}
.isk-tag-unit { color: var(--muted); font-size: 0.85rem; min-width: 2rem; }
.isk-inline-check { display: inline; margin: 0; }
.isk-inline-check .isk-check-label { display: inline-flex; margin: 0; cursor: pointer; }
.isk-inline-check input[type="checkbox"] {
  width: auto; max-width: none; margin: 0; cursor: pointer;
}
td .isk-inline-check button { margin: 0; }

.isk-readings-nav {
  display: flex; align-items: center; justify-content: center; gap: 1rem; text-align: center;
}
.isk-readings-nav .btn { margin: 0; }
.isk-readings-year-form { margin: 0; }
.isk-readings-year-label {
  display: inline-flex; align-items: center; gap: 0.5rem; margin: 0; font-weight: 600;
}
.isk-readings-year-label select { width: auto; min-width: 5.5rem; margin: 0; }
.isk-readings-view-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1rem;
}
.isk-readings-view-toggle { display: inline-flex; gap: 0.35rem; }
.isk-readings-view-toggle .btn { margin: 0; }
.isk-readings-object h2 { margin-top: 0; }
.isk-readings-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.isk-readings-months { width: 100%; min-width: 56rem; table-layout: auto; }
table.isk-readings-months th,
table.isk-readings-months td { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.isk-readings-months th:first-child,
table.isk-readings-months td:first-child { text-align: left; white-space: normal; }
table.isk-readings-months th:last-child,
table.isk-readings-months td.isk-readings-sum { font-weight: 600; }
.isk-readings-baseline { color: var(--muted); }
.isk-readings-tag { min-width: 8rem; }
.isk-readings-tag-name { display: block; }
.isk-readings-unit,
.isk-readings-tech { display: block; font-size: 0.8rem; }
.isk-readings-num.empty { color: var(--muted); }
.isk-readings-month-cell {
  cursor: pointer; border-radius: 4px;
}
.isk-readings-month-cell:hover,
.isk-readings-month-cell:focus {
  outline: none;
  background: rgba(59, 130, 246, 0.18);
}
.isk-readings-chart-wrap {
  position: relative;
  width: 100%; min-height: 220px; margin-top: 0.5rem;
  background: var(--bg); border-radius: 6px; padding: 0.35rem 0.25rem;
}
#readingsDayChart { width: 100%; height: 220px; display: block; cursor: crosshair; }
.isk-readings-chart-tip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  background: #21262d;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}
.isk-object-pick {
  display: inline-flex; align-items: center; gap: 0.35rem; margin: 0; font-size: 0.9rem; color: var(--text); cursor: pointer;
}
.isk-object-pick input { width: auto; max-width: none; margin: 0; }
.isk-object-fieldset {
  border: 1px solid var(--border); border-radius: 8px; padding: 0.65rem 0.75rem; margin: 0.5rem 0 0;
}
.isk-object-fieldset legend { color: var(--muted); font-size: 0.85rem; padding: 0 0.35rem; }
.isk-login-status {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem; margin-top: 1rem;
  padding-top: 0.85rem; border-top: 1px solid var(--border); font-size: 0.9rem;
}
.isk-login-status > div { display: flex; align-items: center; gap: 0.45rem; }
.isk-dnd-handle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.75rem; height: 1.75rem; cursor: grab; user-select: none;
  color: var(--muted); font-size: 1rem; letter-spacing: -0.12em;
  border-radius: 4px; border: 1px solid transparent;
}
.isk-dnd-handle:hover { color: var(--text); border-color: var(--border); background: var(--bg); }
.isk-dnd-handle:active { cursor: grabbing; }
tr.isk-dnd-dragging { opacity: 0.55; background: rgba(59, 130, 246, 0.12); }
tr.isk-dnd-over { box-shadow: inset 0 2px 0 var(--accent); }
tbody.isk-dnd-saving { opacity: 0.7; pointer-events: none; }
th.isk-dnd-col, td.isk-dnd-col { width: 2.5rem; text-align: center; vertical-align: middle; }