/* ============================================================
   KALYTERA — Control Surface
   A dark-first operations console. State (live / recording / alarm)
   is the only thing that lights up; the accent stays quiet.
   Dark is the committed default; light tokens exist for a future toggle.
   ============================================================ */
:root {
  /* Ground & surfaces */
  --k-bg: #0A0E15;
  --k-surface: #111826;
  --k-surface-2: #161F30;
  --k-surface-3: #1D2740;
  --k-raise: #202B44;
  --k-border: #232E45;
  --k-border-strong: #33425F;
  --k-line-soft: rgba(255,255,255,.05);

  /* Text */
  --k-text: #E8EEF7;
  --k-text-muted: #8A99B4;
  --k-text-subtle: #59688200; /* placeholder, set below */
  --k-text-subtle: #5C6B84;
  --k-text-faint: #46536C;

  /* Accent — quiet steel blue, interaction only */
  --k-primary: #3E5C86;
  --k-primary-hover: #4E7099;
  --k-primary-active: #35507A;
  --k-primary-bright: #7C9BC9;
  --k-primary-soft: rgba(90,130,180,.16);
  --k-primary-glow: rgba(80,112,153,.35);

  /* Semantic state — the vivid layer */
  --k-success: #34D6A4;   --k-success-bg: rgba(52,214,164,.14);  --k-success-fg: #4FE3B6;
  --k-warning: #F6B33D;   --k-warning-bg: rgba(246,179,61,.14);  --k-warning-fg: #F9C566;
  --k-danger:  #FF5D6B;   --k-danger-bg:  rgba(255,93,107,.14);  --k-danger-fg:  #FF838D;
  --k-info:    #6E8CC4;   --k-info-bg:    rgba(110,140,196,.16); --k-info-fg:    #9DB4DB;
  --k-neutral-bg: rgba(255,255,255,.05); --k-neutral-fg: #9DAAC1;

  /* Camera / stream status */
  --k-status-online: #34D6A4;
  --k-status-recording: #FF5D6B;
  --k-status-idle: #F6B33D;
  --k-status-error: #F6B33D;
  --k-status-offline: #5C6B84;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", "Segoe UI Mono", Consolas, Menlo, monospace;

  --k-radius-sm: 7px; --k-radius: 10px; --k-radius-lg: 16px; --k-radius-pill: 999px;
  --k-shadow-sm: 0 1px 2px rgba(0,0,0,.3);
  --k-shadow: 0 14px 40px rgba(0,0,0,.4);
  --k-shadow-lg: 0 22px 60px rgba(0,0,0,.5);

  --rail-w: 78px; --topbar-h: 54px;
  color-scheme: dark;
}

html { font-size: 15px; }
@media (min-width: 1500px) { html { font-size: 16px; } }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  background:
    radial-gradient(1100px 640px at 82% -10%, rgba(90,130,180,.09), transparent 60%),
    var(--k-bg);
  color: var(--k-text);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--k-primary-soft); }
* { scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.16) transparent; }
*::-webkit-scrollbar { width: 9px; height: 9px; }
*::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 6px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,.22); background-clip: content-box; }

.mono { font-family: var(--mono); }
.tabular, .num { font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--k-primary-bright); outline-offset: 2px; border-radius: 5px; }

a { color: var(--k-primary-bright); }
code { color: var(--k-primary-bright); background: var(--k-surface-2); padding: .08em .4em; border-radius: 5px; font-family: var(--mono); font-size: .86em; }

/* ============================================================
   Dark treatment for the Bootstrap-based pages
   ============================================================ */
.card { background: var(--k-surface); border: 1px solid var(--k-border); color: var(--k-text); border-radius: var(--k-radius-lg); }
.card-header, .card-footer { background: transparent; border-color: var(--k-border); }
.text-secondary { color: var(--k-text-muted) !important; }
.text-muted { color: var(--k-text-muted) !important; }
.text-body-secondary { color: var(--k-text-muted) !important; }
.border, .border-top, .border-bottom, .border-start, .border-end { border-color: var(--k-border) !important; }
hr, .dropdown-divider { border-color: var(--k-border); opacity: 1; }

.table { color: var(--k-text); --bs-table-bg: transparent; --bs-table-color: var(--k-text); border-color: var(--k-border); }
.table > :not(caption) > * > * { background: transparent; color: var(--k-text); border-color: var(--k-line-soft); box-shadow: none; }
.table > thead > tr > th { color: var(--k-text-muted); font-size: .74rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; border-color: var(--k-border); font-family: var(--mono); }
.table > tbody > tr { transition: background-color .12s ease; }
.table:not(.table-hover) > tbody > tr:hover > * { background-color: var(--k-surface-2); }
.table-secondary, .table-secondary > * { --bs-table-bg: var(--k-surface-2); color: var(--k-text-muted) !important; }

.form-control, .form-select {
  background-color: var(--k-surface-2); border: 1px solid var(--k-border); color: var(--k-text); border-radius: 9px;
}
.form-control::placeholder { color: var(--k-text-faint); }
.form-control:focus, .form-select:focus { background-color: var(--k-surface-2); border-color: var(--k-primary-bright); color: var(--k-text); box-shadow: 0 0 0 3px var(--k-primary-soft); }
.form-control:disabled, .form-select:disabled { background-color: var(--k-surface); color: var(--k-text-muted); }
.form-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%238A99B4' stroke-width='1.6' stroke-linecap='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E"); }
.form-label { color: var(--k-text-muted); font-size: .82rem; font-weight: 600; margin-bottom: .35rem; }
.form-text { color: var(--k-text-subtle); }
.form-check-input { background-color: var(--k-surface-2); border-color: var(--k-border-strong); }
.form-check-input:checked { background-color: var(--k-primary); border-color: var(--k-primary); }
.input-group-text { background: var(--k-surface); border-color: var(--k-border); color: var(--k-text-muted); }

.modal-content { background: var(--k-surface); border: 1px solid var(--k-border-strong); border-radius: var(--k-radius-lg); color: var(--k-text); box-shadow: var(--k-shadow-lg); }
.modal-header, .modal-footer { border-color: var(--k-border); }
.btn-close { filter: invert(1) grayscale(1) brightness(1.6); opacity: .6; }
.btn-close:hover { opacity: 1; }

.dropdown-menu { background: var(--k-surface-2); border: 1px solid var(--k-border-strong); border-radius: var(--k-radius); box-shadow: var(--k-shadow); padding: 5px; }
.dropdown-item { color: var(--k-text); border-radius: 7px; padding: 8px 12px; }
.dropdown-item:hover, .dropdown-item:focus { background: var(--k-surface-3); color: var(--k-text); }
.dropdown-item.text-danger { color: var(--k-danger-fg) !important; }
.dropdown-item.text-danger:hover { background: var(--k-danger-bg); }

.list-group-item { background: transparent; border-color: var(--k-border); color: var(--k-text); }

.alert { border-radius: var(--k-radius); border: 1px solid var(--k-border); }
.alert-info { background: var(--k-info-bg); border-color: rgba(110,140,196,.3); color: var(--k-info-fg); }
.alert-success { background: var(--k-success-bg); border-color: rgba(52,214,164,.3); color: var(--k-success-fg); }
.alert-warning { background: var(--k-warning-bg); border-color: rgba(246,179,61,.3); color: var(--k-warning-fg); }
.alert-danger { background: var(--k-danger-bg); border-color: rgba(255,93,107,.3); color: var(--k-danger-fg); }
.alert-light, .alert-secondary { background: var(--k-surface-2); color: var(--k-text-muted); }

.nav-tabs { border-color: var(--k-border); }
.nav-tabs .nav-link { color: var(--k-text-muted); border: 0; border-bottom: 2px solid transparent; }
.nav-tabs .nav-link.active { color: var(--k-text); background: transparent; border-bottom-color: var(--k-primary-bright); }

.progress { background: var(--k-surface-3); border-radius: 999px; }
.badge.text-bg-secondary { background: var(--k-neutral-bg) !important; color: var(--k-neutral-fg) !important; }
.badge.text-bg-light { background: var(--k-surface-2) !important; color: var(--k-text-muted) !important; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --bs-btn-font-weight: 600; --bs-btn-border-radius: 9px;
  transition: color .15s, background-color .15s, border-color .15s, box-shadow .15s, transform .04s;
}
.btn-sm { --bs-btn-border-radius: 8px; }
.btn:active { transform: translateY(.5px); }

.btn-primary {
  --bs-btn-bg: var(--k-primary); --bs-btn-border-color: var(--k-primary);
  --bs-btn-hover-bg: var(--k-primary-hover); --bs-btn-hover-border-color: var(--k-primary-hover);
  --bs-btn-active-bg: var(--k-primary-active); --bs-btn-active-border-color: var(--k-primary-active);
  --bs-btn-color: #fff; --bs-btn-hover-color: #fff;
  --bs-btn-disabled-bg: #2a3a55; --bs-btn-disabled-border-color: #2a3a55; --bs-btn-disabled-color: #8394ad;
  box-shadow: 0 4px 14px var(--k-primary-glow);
}
.btn-secondary {
  --bs-btn-bg: var(--k-surface-2); --bs-btn-border-color: var(--k-border-strong); --bs-btn-color: var(--k-text);
  --bs-btn-hover-bg: var(--k-surface-3); --bs-btn-hover-border-color: var(--k-border-strong); --bs-btn-hover-color: var(--k-text);
}
.btn-success { --bs-btn-bg: #1f9d78; --bs-btn-border-color: #1f9d78; --bs-btn-hover-bg: #1a8a69; --bs-btn-hover-border-color: #1a8a69; --bs-btn-color: #fff; }
.btn-danger { --bs-btn-bg: #d84656; --bs-btn-border-color: #d84656; --bs-btn-hover-bg: #c53b4a; --bs-btn-color: #fff; }
.btn-outline-primary { --bs-btn-color: var(--k-primary-bright); --bs-btn-border-color: var(--k-border-strong); --bs-btn-hover-bg: var(--k-primary); --bs-btn-hover-border-color: var(--k-primary); --bs-btn-hover-color: #fff; --bs-btn-active-bg: var(--k-primary-active); }
.btn-outline-secondary { --bs-btn-color: var(--k-text-muted); --bs-btn-border-color: var(--k-border-strong); --bs-btn-hover-bg: var(--k-surface-2); --bs-btn-hover-color: var(--k-text); --bs-btn-hover-border-color: var(--k-border-strong); --bs-btn-active-bg: var(--k-surface-3); --bs-btn-active-color: var(--k-text); }
.btn-outline-success { --bs-btn-color: var(--k-success-fg); --bs-btn-border-color: rgba(52,214,164,.35); --bs-btn-hover-bg: rgba(52,214,164,.14); --bs-btn-hover-color: var(--k-success-fg); --bs-btn-hover-border-color: var(--k-success); }
.btn-outline-danger { --bs-btn-color: var(--k-danger-fg); --bs-btn-border-color: rgba(255,93,107,.35); --bs-btn-hover-bg: rgba(255,93,107,.14); --bs-btn-hover-color: var(--k-danger-fg); --bs-btn-hover-border-color: var(--k-danger); }
.btn-outline-warning { --bs-btn-color: var(--k-warning-fg); --bs-btn-border-color: rgba(246,179,61,.35); --bs-btn-hover-bg: rgba(246,179,61,.14); --bs-btn-hover-color: var(--k-warning-fg); --bs-btn-hover-border-color: var(--k-warning); }
.btn-outline-light { --bs-btn-color: var(--k-text); --bs-btn-border-color: var(--k-border-strong); --bs-btn-hover-bg: var(--k-surface-2); --bs-btn-hover-color: var(--k-text); }
.btn-icon { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; }
.btn-icon.btn-square { padding-left: .5rem; padding-right: .5rem; }

/* ============================================================
   Icons
   ============================================================ */
.k-icon { flex: 0 0 auto; vertical-align: -.18em; }
.k-icon:not([width]) { width: 18px; height: 18px; }
.sidebar-icon { width: 21px; height: 21px; }

/* ============================================================
   Shell — icon rail + top command bar + canvas
   ============================================================ */
.app-shell {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas: "rail topbar" "rail canvas";
  height: 100dvh; overflow: hidden;
}
.rail {
  grid-area: rail; background: linear-gradient(180deg, #0C1119, #080C12);
  border-right: 1px solid var(--k-border); display: flex; flex-direction: column;
  align-items: center; padding: 13px 0 12px; gap: 3px; z-index: 20;
}
.rail-brand { width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; margin-bottom: 14px; flex: 0 0 auto;
  background: linear-gradient(145deg, #46618C, #33507A); box-shadow: 0 6px 18px var(--k-primary-glow); }
.rail-brand svg { width: 23px; height: 23px; stroke: #fff; fill: none; }
.rail-nav { display: flex; flex-direction: column; gap: 3px; align-items: center; flex: 1; width: 100%; }
.rail-link {
  width: 60px; padding: 9px 0 7px; border: 0; background: transparent; cursor: pointer; text-decoration: none;
  border-radius: var(--k-radius); display: flex; flex-direction: column; align-items: center; gap: 5px;
  color: var(--k-text-faint); transition: color .15s, background .15s; position: relative;
}
.rail-link svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.7; }
.rail-link span { font-size: 10px; font-weight: 600; }
.rail-link:hover { color: var(--k-text-muted); background: rgba(255,255,255,.03); }
.rail-link.active { color: var(--k-primary-bright); }
.rail-link.active::before { content: ""; position: absolute; left: -13px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 28px; border-radius: 0 3px 3px 0; background: var(--k-primary-bright); box-shadow: 0 0 12px var(--k-primary-glow); }
.rail-badge { position: absolute; top: 4px; right: 10px; min-width: 16px; height: 16px; padding: 0 4px; border-radius: 8px;
  background: var(--k-danger); color: #fff; font-size: 10px; font-weight: 700; display: grid; place-items: center; font-family: var(--mono); }
.rail-foot { display: flex; flex-direction: column; gap: 9px; align-items: center; }
.rail-foot .avatar { width: 36px; height: 36px; border-radius: 11px; background: var(--k-surface-2); border: 1px solid var(--k-border);
  display: grid; place-items: center; font-weight: 700; font-size: 13px; color: var(--k-primary-bright); cursor: pointer; }
.rail-foot form { margin: 0; }

.topbar {
  grid-area: topbar; border-bottom: 1px solid var(--k-border); display: flex; align-items: center; gap: 14px;
  padding: 0 16px; background: rgba(10,14,21,.7); backdrop-filter: blur(8px); z-index: 15;
}
.topbar .ws { display: flex; align-items: center; gap: 9px; min-width: 0; }
.topbar .ws-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--k-success); box-shadow: 0 0 8px var(--k-success); flex: 0 0 auto; }
.topbar .ws-name { font-weight: 650; font-size: 14px; }
.topbar .ws-sub { color: var(--k-text-faint); font-size: 11px; font-family: var(--mono); }
.topbar-search { flex: 1; max-width: 440px; display: flex; align-items: center; gap: 9px; height: 34px; padding: 0 12px;
  background: var(--k-surface); border: 1px solid var(--k-border); border-radius: 9px; color: var(--k-text-muted); }
.topbar-search svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.topbar-search input { flex: 1; border: 0; background: transparent; color: var(--k-text); font-size: 13px; outline: none; }
.status-strip { display: flex; align-items: center; gap: 7px; margin-left: auto; }
.stat-pill { display: flex; align-items: center; gap: 7px; height: 32px; padding: 0 11px; background: var(--k-surface); border: 1px solid var(--k-border); border-radius: 8px; }
.stat-pill .k { font-family: var(--mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--k-text-faint); }
.stat-pill .v { font-family: var(--mono); font-weight: 700; font-size: 13px; }
.dot { width: 7px; height: 7px; border-radius: 50%; flex: 0 0 auto; }
.dot.live, .dot.online { background: var(--k-status-online); box-shadow: 0 0 7px var(--k-status-online); }
.dot.rec { background: var(--k-status-recording); box-shadow: 0 0 7px var(--k-status-recording); animation: k-pulse 1.6s infinite; }
.dot.off { background: var(--k-status-offline); }
.dot.warn, .dot.idle { background: var(--k-status-idle); }
@keyframes k-pulse { 0%,100%{opacity:1} 50%{opacity:.35} }

.icon-btn { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--k-border); background: var(--k-surface);
  display: grid; place-items: center; cursor: pointer; color: var(--k-text-muted); position: relative; text-decoration: none; }
.icon-btn:hover { color: var(--k-text); border-color: var(--k-border-strong); }
.icon-btn svg { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.icon-btn .bump { position: absolute; top: -5px; right: -5px; min-width: 16px; height: 16px; padding: 0 4px; border-radius: 8px;
  background: var(--k-danger); color: #fff; font-size: 10px; font-weight: 700; display: grid; place-items: center; font-family: var(--mono); }

.canvas { grid-area: canvas; overflow: auto; position: relative; }
.canvas.no-scroll { overflow: hidden; }
.page { padding: 22px 26px 32px; }
.page-narrow { max-width: 1180px; }

/* ============================================================
   Page header + eyebrow
   ============================================================ */
.page-header { display: flex; flex-direction: column; gap: 14px; margin-bottom: 22px; }
@media (min-width: 768px) { .page-header { flex-direction: row; align-items: flex-end; justify-content: space-between; } }
.page-header-eyebrow, .eyebrow { color: var(--k-text-faint); font-family: var(--mono); font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 5px; }
.page-header-title { font-size: 20px; font-weight: 680; line-height: 1.15; margin: 0; letter-spacing: -.01em; color: var(--k-text); }
.page-header-subtitle { color: var(--k-text-muted); font-size: 13.5px; margin: 4px 0 0; max-width: 68ch; }
.page-header-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; flex: 0 0 auto; }

/* ============================================================
   Chips / badges
   ============================================================ */
.chip { display: inline-flex; align-items: center; gap: 6px; height: 22px; padding: 0 9px; border-radius: 999px; font-size: 11px; font-weight: 650; font-family: var(--mono); letter-spacing: .02em; white-space: nowrap; }
.chip svg { width: 12px; height: 12px; stroke: currentColor; fill: none; stroke-width: 2; }
.chip.live, .chip.online { background: var(--k-success-bg); color: var(--k-success-fg); }
.chip.rec, .chip.recording { background: var(--k-danger-bg); color: var(--k-danger-fg); }
.chip.warn, .chip.idle { background: var(--k-warning-bg); color: var(--k-warning-fg); }
.chip.off, .chip.offline, .chip.neutral { background: var(--k-neutral-bg); color: var(--k-neutral-fg); }
.chip.accent, .chip.info { background: var(--k-primary-soft); color: var(--k-primary-bright); }

.k-badge { display: inline-flex; align-items: center; gap: .35em; padding: .2rem .6rem; border-radius: 999px; font-size: .74rem; font-weight: 600; line-height: 1.4; white-space: nowrap; border: 1px solid transparent; }
.k-badge::before { content: ""; width: .5em; height: .5em; border-radius: 50%; background: currentColor; opacity: .95; flex: 0 0 auto; }
.k-badge--dotless::before { display: none; }
.k-badge--success, .k-badge--online   { background: var(--k-success-bg); color: var(--k-success-fg); }
.k-badge--danger,  .k-badge--recording{ background: var(--k-danger-bg);  color: var(--k-danger-fg); }
.k-badge--warning, .k-badge--error, .k-badge--idle { background: var(--k-warning-bg); color: var(--k-warning-fg); }
.k-badge--info     { background: var(--k-primary-soft); color: var(--k-primary-bright); }
.k-badge--offline, .k-badge--neutral  { background: var(--k-neutral-bg); color: var(--k-neutral-fg); }
.k-badge--recording::before { animation: k-pulse 1.4s ease-in-out infinite; }

/* ============================================================
   Panels / surfaces / empty states
   ============================================================ */
.panel, .portal-card { background: var(--k-surface); border: 1px solid var(--k-border); border-radius: var(--k-radius-lg); box-shadow: none; }
.portal-card.border-success { border-color: rgba(52,214,164,.4) !important; }
.empty-state { background: var(--k-surface-2); border: 1px dashed var(--k-border-strong); border-radius: var(--k-radius); color: var(--k-text-muted); padding: 2.25rem 2rem; text-align: center; }
.empty-state .k-icon { color: var(--k-text-faint); }

/* Stat card (legacy dashboard + reused) */
.stat-card { position: relative; overflow: hidden; }
.stat-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: linear-gradient(180deg, var(--k-primary-bright), var(--k-primary)); }
.stat-label { color: var(--k-text-muted); font-size: .8rem; font-weight: 600; letter-spacing: .03em; text-transform: uppercase; display: flex; align-items: center; gap: .4rem; }
.stat-value { font-size: 1.9rem; font-weight: 700; margin: .35rem 0; font-family: var(--mono); font-variant-numeric: tabular-nums; }
.storage-progress { height: .7rem; border-radius: 999px; background: var(--k-surface-3); }
.storage-progress .progress-bar { background: linear-gradient(90deg, var(--k-primary), var(--k-primary-bright)); }

/* KPI + sparkline (Insights) */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px,1fr)); gap: 12px; }
.kpi { border: 1px solid var(--k-border); border-radius: var(--k-radius-lg); background: var(--k-surface); padding: 16px; }
.kpi .eyebrow { display: flex; align-items: center; gap: 7px; margin-bottom: 10px; }
.kpi .eyebrow svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; }
.kpi .kpi-value { font-family: var(--mono); font-size: 26px; font-weight: 700; letter-spacing: -.01em; }
.kpi .kpi-sub { font-size: 11.5px; color: var(--k-text-faint); margin-top: 3px; }
.kpi .spark { height: 34px; margin-top: 10px; }

/* ============================================================
   Live events / alarms
   ============================================================ */
.ev { border: 1px solid var(--k-border); border-radius: var(--k-radius); padding: 11px 12px; background: var(--k-surface-2); border-left-width: 3px; display: flex; flex-direction: column; gap: 7px; }
.ev.crit, .ev.critical { border-left-color: var(--k-danger); }
.ev.warn, .ev.warning { border-left-color: var(--k-warning); }
.ev.info { border-left-color: var(--k-primary-bright); }
.ev-top { display: flex; align-items: center; gap: 8px; }
.ev-top .who { font-weight: 650; font-size: 13px; }
.ev-top .when { margin-left: auto; font-family: var(--mono); font-size: 10px; color: var(--k-text-faint); }
.ev-desc { font-size: 12.5px; color: var(--k-text-muted); line-height: 1.45; }
.ev-desc b { color: var(--k-text); font-weight: 600; }

/* Rule cards (plain-language) */
.rules-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 12px; }
.rule { border: 1px solid var(--k-border); border-radius: var(--k-radius-lg); background: var(--k-surface); padding: 15px 16px; display: flex; flex-direction: column; gap: 12px; }
.rule-head { display: flex; align-items: center; gap: 9px; }
.rule-head .nm { font-weight: 650; font-size: 14px; }
.sentence { font-size: 13.5px; line-height: 1.75; color: var(--k-text-muted); }
.sentence .t { color: var(--k-text); font-weight: 600; padding: 1px 7px; border-radius: 6px; background: var(--k-surface-2); border: 1px solid var(--k-border); white-space: nowrap; }
.sentence .t.obj { color: var(--k-primary-bright); border-color: var(--k-border-strong); background: var(--k-primary-soft); }
.sentence .t.act { color: var(--k-success-fg); border-color: rgba(52,214,164,.3); background: var(--k-success-bg); }
.toggle { width: 38px; height: 22px; border-radius: 999px; background: var(--k-success); position: relative; cursor: pointer; border: 0; flex: 0 0 auto; }
.toggle::after { content: ""; position: absolute; top: 2px; right: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: .15s; }
.toggle.off { background: var(--k-surface-3); border: 1px solid var(--k-border-strong); }
.toggle.off::after { right: auto; left: 2px; background: var(--k-text-faint); }

/* ============================================================
   Master–detail (Cameras) + tabs
   ============================================================ */
.master-detail { position: absolute; inset: 0; display: grid; grid-template-columns: 300px 1fr; }
.md-list { border-right: 1px solid var(--k-border); background: var(--k-surface); overflow: auto; }
.md-detail { overflow: auto; }
.md-row { display: flex; align-items: center; gap: 11px; padding: 12px 15px; border-bottom: 1px solid var(--k-line-soft); cursor: pointer; border-left: 3px solid transparent; text-decoration: none; color: var(--k-text); }
.md-row:hover { background: var(--k-surface-2); }
.md-row.active { background: var(--k-primary-soft); border-left-color: var(--k-primary-bright); }
.md-row .thumb { width: 46px; height: 30px; border-radius: 6px; background: radial-gradient(100% 100% at 30% 0, #223049, #0e141d); border: 1px solid var(--k-border); flex: 0 0 auto; }
.md-row .info { flex: 1; min-width: 0; } .md-row .info b { font-size: 13px; font-weight: 600; display: block; }
.md-row .info small { font-family: var(--mono); font-size: 10px; color: var(--k-text-faint); }

.detail-tabs { display: flex; gap: 2px; padding: 0 26px; border-bottom: 1px solid var(--k-border); background: var(--k-surface); overflow-x: auto; }
.detail-tab { border: 0; background: transparent; color: var(--k-text-muted); padding: 13px 15px; cursor: pointer; font-size: 13px; font-weight: 600; border-bottom: 2px solid transparent; margin-bottom: -1px; display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; text-decoration: none; }
.detail-tab svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.9; }
.detail-tab.active { color: var(--k-text); border-bottom-color: var(--k-primary-bright); }

.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px 22px; }
.pill-tabs { display: inline-flex; gap: 3px; padding: 4px; background: var(--k-surface); border: 1px solid var(--k-border); border-radius: 10px; }
.pill-tab { border: 0; background: transparent; color: var(--k-text-muted); padding: 7px 14px; border-radius: 7px; cursor: pointer; font-size: 13px; font-weight: 600; display: inline-flex; align-items: center; gap: 7px; }
.pill-tab.active { background: var(--k-primary-soft); color: var(--k-primary-bright); }

/* ============================================================
   Video wall (Live / Playback) — dark, retained structural names
   ============================================================ */
.camera-grid { background: #05070c; border-radius: var(--k-radius); display: grid; gap: 8px; min-height: 320px; padding: 8px; }
.playback-camera-grid .camera-cell, .camera-grid .camera-cell { max-height: 46vh; }
.playback-camera-grid.grid-3 .camera-cell, .playback-camera-grid.grid-4 .camera-cell,
.camera-grid.grid-3 .camera-cell, .camera-grid.grid-4 .camera-cell { max-height: 30vh; }
.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.grid-5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
.grid-6 { grid-template-columns: repeat(6, minmax(0,1fr)); }
.camera-cell { align-items: center; aspect-ratio: 16/9; border-radius: var(--k-radius-sm); display: flex; justify-content: center; overflow: hidden; position: relative; border: 1px solid var(--k-border);
  background: repeating-linear-gradient(115deg, rgba(255,255,255,.012) 0 2px, transparent 2px 5px), radial-gradient(120% 90% at 30% 10%, #16203200, #0a0e15 70%); }
.camera-cell.livecell, .camera-cell:has(.camera-video) { border-color: rgba(52,214,164,.22); }
.camera-cell.selected-cell { box-shadow: inset 0 0 0 2px var(--k-primary-bright); }
.camera-cell.fit-cover .camera-video, .camera-cell.fit-cover .cell-poster { object-fit: cover; }
.camera-cell.zoomed { cursor: grab; } .camera-cell.zoomed.panning { cursor: grabbing; }
.camera-video { height: 100%; object-fit: contain; width: 100%; }
.cell-label { background: linear-gradient(transparent, rgba(5,7,12,.85)); bottom: 0; color: #fff; font-size: .78rem; left: 0; overflow: hidden; padding: .5rem .7rem; position: absolute; right: 0; text-overflow: ellipsis; white-space: nowrap; }
.cell-status { border-radius: 999px; font-size: .62rem; font-weight: 700; padding: .2rem .5rem; position: absolute; right: .6rem; text-transform: uppercase; top: .6rem; font-family: var(--mono); letter-spacing: .05em; }
.status-live { background: var(--k-success-bg); color: var(--k-success-fg); }
.status-rec { background: var(--k-danger-bg); color: var(--k-danger-fg); }
.status-offline { background: var(--k-neutral-bg); color: var(--k-neutral-fg); }
.cell-transport { border-radius: 999px; font-size: .58rem; font-weight: 700; left: .6rem; letter-spacing: .04em; padding: .18rem .45rem; position: absolute; text-transform: uppercase; top: .6rem; z-index: 2; font-family: var(--mono); }
.transport-webrtc { background: var(--k-primary-soft); color: var(--k-primary-bright); }
.transport-hls { background: rgba(52,214,164,.14); color: var(--k-success-fg); }
.empty-cell { background: #0b111c; }
.cell-overlay { align-items: center; display: flex; height: 100%; justify-content: center; width: 100%; }
.camera-cell.empty-cell { border-style: dashed; border-color: var(--k-border); transition: border-color .15s, background .15s; }
.camera-cell.empty-cell:hover { background: #0f1726; border-color: var(--k-primary-bright); }
.camera-cell .cell-placeholder { font-weight: 500; color: var(--k-text-faint); }

/* Immersive full-height layout */
.immersive-header { display: flex; align-items: baseline; gap: .85rem; flex: 0 0 auto; margin-bottom: .55rem; }
.immersive-eyebrow { color: var(--k-text-faint); font-family: var(--mono); font-size: .64rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; flex: 0 0 auto; }
.immersive-title { font-size: 1.15rem; font-weight: 700; margin: 0; line-height: 1.1; }
.immersive-subtitle { color: var(--k-text-muted); font-size: .8rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.live-view-toolbar, .playback-toolbar { row-gap: .4rem; }
.live-view-toolbar .form-select-sm, .playback-toolbar .form-select-sm { background-color: var(--k-surface-2); }

@media (min-width: 992px) {
  .canvas.content-immersive { display: flex; flex-direction: column; height: calc(100dvh - var(--topbar-h)); max-height: calc(100dvh - var(--topbar-h)); padding: .85rem 1.15rem .95rem; overflow: hidden; }
  .content-immersive .live-view-layout { flex: 1 1 auto; min-height: 0; gap: .85rem; }
  .content-immersive .live-view-sidebar, .content-immersive .playback-sidebar { max-height: none; height: 100%; }
  .content-immersive .live-view-main, .content-immersive .playback-main { display: flex; flex-direction: column; flex: 1 1 auto; min-height: 0; }
  .content-immersive .live-view-toolbar, .content-immersive .playback-toolbar, .content-immersive #exportStatus, .content-immersive .playback-timeline-panel { flex: 0 0 auto; }
  .content-immersive .camera-grid { flex: 1 1 auto; min-height: 0; grid-auto-rows: 1fr; }
  .content-immersive .camera-grid .camera-cell { aspect-ratio: auto; max-height: none; height: 100%; min-height: 0; }
  .content-immersive #noStreams { display: none !important; }
}

/* ============================================================
   Auth (login) — dark
   ============================================================ */
.auth-page { align-items: center; background: radial-gradient(1000px 600px at 70% -10%, rgba(90,130,180,.12), transparent 60%), var(--k-bg); display: flex; min-height: 100dvh; }
.auth-card { border-radius: var(--k-radius-lg); background: var(--k-surface); border: 1px solid var(--k-border-strong); box-shadow: var(--k-shadow-lg); }

/* ============================================================
   Utilities
   ============================================================ */
.data-mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.hairline { border-top: 1px solid var(--k-border); }
.muted { color: var(--k-text-muted); }

@media (max-width: 991.98px) {
  .app-shell { grid-template-columns: 1fr; grid-template-areas: "topbar" "canvas"; }
  .rail { display: none; }
  .master-detail { grid-template-columns: 1fr; }
  .grid-4, .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 640px) {
  .status-strip .stat-pill { display: none; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}