:root {
  --bg: oklch(17% 0.018 245);
  --surface: oklch(22% 0.02 245);
  --surface-2: oklch(26% 0.024 245);
  --fg: oklch(94% 0.01 230);
  --muted: oklch(70% 0.02 235);
  --border: oklch(34% 0.024 245);
  --accent: oklch(72% 0.13 205);
  --accent-2: oklch(76% 0.12 82);
  --good: oklch(72% 0.14 155);
  --warn: oklch(78% 0.13 80);
  --bad: oklch(67% 0.17 28);
  --shadow: 0 24px 80px color-mix(in oklch, var(--bg) 72%, transparent);
  --font-display: "Iowan Old Style", "Charter", "Songti SC", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, monospace;
  --radius: 12px;
  --radius-lg: 18px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 72% 8%, color-mix(in oklch, var(--accent) 18%, transparent), transparent 32rem),
    radial-gradient(circle at 8% 88%, color-mix(in oklch, var(--accent-2) 11%, transparent), transparent 30rem),
    var(--bg);
  color: var(--fg);
  font: 14px/1.5 var(--font-body);
  display: grid;
  grid-template-columns: 256px minmax(0, 1fr);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.auth-page {
  display: grid;
  grid-template-columns: 1fr;
  place-items: center;
  padding: 40px;
}

a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .58; }
h1, h2, h3 { margin: 0; font-family: var(--font-display); text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font: 700 12px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; }

.login-shell {
  width: min(1120px, 100%);
  display: grid;
  grid-template-columns: minmax(360px, 460px) 1fr;
  gap: 24px;
}

.login-panel,
.login-visual,
.panel,
.kpi-card,
.modal-card,
.video-tile {
  background: color-mix(in oklch, var(--surface) 90%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 86%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.login-panel {
  border-radius: 28px;
  padding: 34px;
}

.login-visual {
  border-radius: 28px;
  min-height: 560px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--fg);
}

.brand-lockup.compact {
  padding: 16px 14px 22px;
}

.brand-lockup strong { display: block; letter-spacing: -.02em; }
.brand-lockup span:not(.brand-mark) { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--bg);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font: 800 12px/1 var(--font-mono);
  letter-spacing: .08em;
}

.login-copy { margin: 56px 0 28px; }
.login-copy h1 { font-size: clamp(36px, 5vw, 58px); line-height: 1.05; margin-bottom: 16px; }
.login-copy p:last-child { color: var(--muted); font-size: 16px; max-width: 32rem; }
.entry-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}

.form-grid { display: grid; gap: 16px; }
.field, .search-field, .select-field { display: grid; gap: 7px; color: var(--muted); font-size: 12px; }
.field input, .search-field input, .select-field select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  background: color-mix(in oklch, var(--surface-2) 88%, transparent);
  padding: 10px 12px;
  outline: none;
}
.field input:focus, .search-field input:focus, .select-field select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 20%, transparent);
}
.field input:focus-visible,
.search-field input:focus-visible,
.select-field select:focus-visible,
.inline-input:focus-visible,
.inline-select:focus-visible {
  outline: 2px solid color-mix(in oklch, var(--accent) 80%, var(--fg));
  outline-offset: 2px;
}

.form-error { min-height: 18px; color: var(--bad); font-size: 13px; }
.hint { margin-top: 18px; color: var(--muted); font-size: 12px; }

.btn {
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 9px 15px;
  color: var(--fg);
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform .12s ease, border-color .16s ease, background .16s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible,
.icon-btn:focus-visible,
.link-btn:focus-visible,
.side-nav a:focus-visible,
.brand-lockup:focus-visible,
.segmented button:focus-visible {
  outline: 2px solid color-mix(in oklch, var(--accent) 82%, var(--fg));
  outline-offset: 3px;
}
.btn.primary { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 700; }
.btn.secondary { border-color: var(--border); background: color-mix(in oklch, var(--surface-2) 78%, transparent); }
.btn.ghost { color: var(--muted); border-color: transparent; }
.btn.full { width: 100%; }
.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: color-mix(in oklch, var(--surface-2) 80%, transparent);
  color: var(--fg);
}
.icon-btn:hover,
.link-btn:hover {
  color: var(--fg);
  background: color-mix(in oklch, var(--accent) 12%, transparent);
}

.glass-map {
  width: min(460px, 80%);
  min-height: 420px;
  border-radius: 28px;
  border: 1px solid color-mix(in oklch, var(--accent) 28%, var(--border));
  background:
    linear-gradient(140deg, color-mix(in oklch, var(--surface-2) 84%, transparent), color-mix(in oklch, var(--bg) 70%, transparent)),
    repeating-linear-gradient(90deg, transparent 0 48px, color-mix(in oklch, var(--fg) 4%, transparent) 49px 50px);
  padding: 24px;
  position: relative;
}
.map-header { display: flex; justify-content: space-between; color: var(--muted); }
.map-header strong { color: var(--fg); }
.map-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 48px 0; }
.node {
  aspect-ratio: 1;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: color-mix(in oklch, var(--surface) 70%, transparent);
}
.node.active { background: color-mix(in oklch, var(--good) 26%, var(--surface)); border-color: color-mix(in oklch, var(--good) 42%, var(--border)); }
.node.warn { background: color-mix(in oklch, var(--warn) 22%, var(--surface)); border-color: color-mix(in oklch, var(--warn) 42%, var(--border)); }
.signal-card {
  position: absolute;
  right: 24px;
  bottom: 24px;
  padding: 16px;
  border-radius: 18px;
  background: color-mix(in oklch, var(--surface) 88%, transparent);
  border: 1px solid var(--border);
}
.signal-card span { color: var(--muted); font-size: 12px; display: block; }
.signal-card strong { display: block; font-size: 30px; margin-top: 4px; }

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 14px;
  border-right: 1px solid var(--border);
  background: color-mix(in oklch, var(--surface) 76%, transparent);
  backdrop-filter: blur(16px);
}
.side-nav { display: grid; gap: 6px; margin-top: 12px; }
.side-nav a {
  border-radius: 12px;
  padding: 11px 12px;
  color: var(--muted);
}
.side-nav a:hover, .side-nav a.active {
  color: var(--fg);
  background: color-mix(in oklch, var(--accent) 14%, transparent);
}
.side-nav a:active { background: color-mix(in oklch, var(--accent) 20%, transparent); }
.sidebar #logoutBtn, .sidebar .logout-form { position: absolute; left: 14px; right: 14px; bottom: 16px; }

.app-main {
  min-width: 0;
  padding: 30px clamp(22px, 4vw, 48px) 56px;
}
.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}
.topbar h1 { font-size: clamp(30px, 4vw, 48px); line-height: 1.06; }
.topbar-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.sync-stamp { color: var(--muted); font: 12px var(--font-mono); }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}
.kpi-grid.compact .kpi-card {
  padding: 16px;
}
.kpi-grid.compact .kpi-card strong {
  font-size: clamp(28px, 3vw, 42px);
}
.kpi-card {
  border-radius: var(--radius-lg);
  padding: 20px;
}
.kpi-card span { color: var(--muted); font-size: 13px; }
.kpi-card strong { display: block; margin-top: 12px; font-size: clamp(34px, 4vw, 54px); line-height: 1; }
.kpi-card small { display: block; margin-top: 10px; color: var(--muted); }

.dashboard-grid {
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 16px;
}
.panel {
  border-radius: var(--radius-lg);
  padding: 20px;
  min-width: 0;
}
.panel.wide { grid-column: span 2; }
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}
.panel-head h2 { font-size: 24px; }
.panel-head p { color: var(--muted); margin-top: 4px; }
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font: 12px var(--font-mono);
  white-space: nowrap;
}
.status-pill.good { color: var(--good); border-color: color-mix(in oklch, var(--good) 44%, var(--border)); }
.status-pill.bad { color: var(--bad); border-color: color-mix(in oklch, var(--bad) 44%, var(--border)); }
.status-pill.warn { color: var(--warn); border-color: color-mix(in oklch, var(--warn) 44%, var(--border)); }

.bar-stack { display: grid; gap: 12px; }
.bar-row { display: grid; grid-template-columns: 120px 1fr 70px; align-items: center; gap: 12px; color: var(--muted); }
.bar-track { height: 14px; border-radius: 999px; background: color-mix(in oklch, var(--surface-2) 80%, var(--bg)); overflow: hidden; }
.bar-fill { height: 100%; border-radius: inherit; background: var(--accent); }
.bar-fill.good { background: var(--good); }
.bar-fill.bad { background: var(--bad); }
.bar-fill.warn { background: var(--warn); }

.school-load-list, .event-list, .check-list { display: grid; gap: 10px; }
.load-item, .event-item, .check-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: color-mix(in oklch, var(--surface-2) 62%, transparent);
}
.event-item { align-items: flex-start; }
.event-item small, .load-item small { color: var(--muted); display: block; margin-top: 2px; }

.table-toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 180px;
  gap: 12px;
  margin-bottom: 14px;
}
.table-toolbar.single { grid-template-columns: 1fr; }
.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 860px;
}
.data-table th,
.data-table td {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
}
.data-table th {
  color: var(--muted);
  font: 700 11px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.data-table tbody tr:hover { background: color-mix(in oklch, var(--fg) 5%, transparent); }
.row-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.link-btn {
  border: 0;
  min-height: 32px;
  border-radius: 8px;
  padding: 4px 6px;
  color: var(--accent);
  background: transparent;
}
.danger { color: var(--bad); }
.drag-handle {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--muted);
  cursor: grab;
  user-select: none;
}
.drag-handle:focus-visible,
.check-item:focus-within {
  outline: 2px solid color-mix(in oklch, var(--accent) 82%, var(--fg));
  outline-offset: 3px;
}
tr.dragging { opacity: .5; }
.school-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 16px;
  align-items: start;
}
.school-impact-panel {
  position: sticky;
  top: 24px;
}
.inline-input, .inline-select {
  min-height: 36px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: color-mix(in oklch, var(--surface-2) 84%, transparent);
  color: var(--fg);
  padding: 7px 9px;
  width: 100%;
}
.url-cell {
  max-width: 240px;
  color: var(--muted);
  font: 12px var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.modal {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--fg);
}
.modal::backdrop { background: color-mix(in oklch, var(--bg) 86%, transparent); backdrop-filter: blur(8px); }
.modal-card {
  width: min(520px, calc(100vw - 32px));
  display: grid;
  gap: 16px;
  border-radius: 22px;
  padding: 22px;
}
.modal-card.danger-card {
  border-color: color-mix(in oklch, var(--bad) 44%, var(--border));
}
.modal-head, .modal-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.modal-actions { justify-content: flex-end; }
.modal-player-card {
  max-width: calc(100vw - 32px);
  max-height: calc(100vh - 32px);
  overflow: hidden;
}
.modal-player-container {
  width: 100%;
  max-height: calc(100vh - 180px);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-player-controls {
  opacity: 1;
  pointer-events: auto;
  z-index: 10;
}
.modal-copy {
  color: var(--muted);
  padding: 12px;
  border: 1px solid color-mix(in oklch, var(--bad) 34%, var(--border));
  border-radius: 12px;
  background: color-mix(in oklch, var(--bad) 10%, transparent);
}
.danger-action {
  background: var(--bad) !important;
  border-color: var(--bad) !important;
  color: var(--fg) !important;
}

.wall-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 16px;
}
.camera-picker { align-self: start; }
.check-item { justify-content: flex-start; }
.check-item input { width: 18px; height: 18px; accent-color: var(--accent); }
.check-item span { color: var(--muted); font-size: 12px; display: block; }
.player-grid {
  display: grid;
  gap: 12px;
  min-height: calc(100vh - 150px);
}
.player-grid.grid-1x { grid-template-columns: 1fr; }
.player-grid.grid-4x { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.player-grid.grid-9x { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.video-tile {
  min-height: 220px;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}
.video-frame {
  flex: 1;
  min-height: 160px;
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--accent) 14%, transparent), transparent 40%),
    repeating-linear-gradient(0deg, color-mix(in oklch, var(--fg) 5%, transparent) 0 1px, transparent 1px 24px),
    color-mix(in oklch, var(--bg) 88%, var(--surface));
  display: grid;
  place-items: center;
  color: var(--muted);
  font: 12px var(--font-mono);
}
.video-tile.paused .video-frame { filter: saturate(.55); }
.video-meta {
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.video-meta strong { display: block; }
.video-meta span { color: var(--muted); font-size: 12px; }
.segmented {
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in oklch, var(--surface-2) 78%, transparent);
}
.segmented button {
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  padding: 8px 12px;
}
.segmented button.active {
  color: var(--bg);
  background: var(--accent);
}
.segmented button:not(.active):hover {
  color: var(--fg);
  background: color-mix(in oklch, var(--fg) 6%, transparent);
}
.empty-state {
  min-height: 240px;
  border: 1px dashed var(--border);
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  padding: 24px;
}
.empty-state.compact {
  min-height: 92px;
}
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 30;
  max-width: min(360px, calc(100vw - 48px));
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid color-mix(in oklch, var(--good) 38%, var(--border));
  background: color-mix(in oklch, var(--surface) 92%, transparent);
  color: var(--fg);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* ASP.NET validation & pagination helpers */
.text-danger, .validation-summary-errors { color: var(--bad); font-size: 13px; }
.field-validation-error { color: var(--bad); font-size: 12px; }
.input-validation-error { border-color: var(--bad) !important; }

.pagination {
  display: flex;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  min-height: 34px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: color-mix(in oklch, var(--surface-2) 70%, transparent);
  color: var(--fg);
  padding: 0 10px;
  font-size: 13px;
}
.pagination a:hover { background: color-mix(in oklch, var(--accent) 14%, transparent); }
.pagination .active span {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}
.pagination .disabled span { opacity: .5; cursor: not-allowed; }

@media (max-width: 1100px) {
  body { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; display: grid; grid-template-columns: 1fr; }
  .sidebar #logoutBtn, .sidebar .logout-form { position: static; margin-top: 12px; }
  .side-nav { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dashboard-grid, .panel.wide, .wall-layout, .school-workspace { grid-template-columns: 1fr; grid-column: auto; }
  .school-impact-panel { position: static; }
}

@media (max-width: 720px) {
  body.auth-page { padding: 18px; }
  .login-shell { grid-template-columns: 1fr; }
  .login-panel { padding: 24px; }
  .login-visual { min-height: 360px; }
  .entry-actions { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; }
  .kpi-grid, .table-toolbar, .player-grid.grid-4x, .player-grid.grid-9x { grid-template-columns: 1fr; }
  .side-nav { grid-template-columns: 1fr 1fr; }
  .bar-row { grid-template-columns: 1fr; }
}

.monitor-page {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 120px);
}

.monitor-wall {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.camera-tree {
  max-height: calc(100vh - 180px);
  overflow-y: auto;
}

.tree-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.tree-channel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: color-mix(in oklch, var(--surface-2) 62%, transparent);
  border: 1px solid var(--border);
  cursor: grab;
  color: var(--fg);
}
.tree-channel:hover { background: color-mix(in oklch, var(--fg) 8%, transparent); }
.tree-channel.dragging { opacity: .6; cursor: grabbing; }
.tree-channel.offline { opacity: .7; }

.channel-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.channel-status.online { background: var(--good); box-shadow: 0 0 6px var(--good); }
.channel-status.offline { background: color-mix(in oklch, var(--muted) 60%, transparent); }
.channel-status-text { font-size: 11px; color: var(--muted); }
.channel-status-text.text-online { color: var(--good); }

.player-stage {
  min-height: calc(100vh - 180px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drag-grid-container {
  flex: 1;
  display: grid;
  gap: 12px;
  min-height: 0;
}

.drag-grid-container.layout-1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.drag-grid-container.layout-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(2, minmax(0, 1fr)); }
.drag-grid-container.layout-6 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(3, minmax(0, 1fr)); }
.drag-grid-container.layout-6 .drag-grid-slot:nth-child(1) { grid-column: 1 / 3; grid-row: 1 / 3; }
.drag-grid-container.layout-6 .drag-grid-slot:nth-child(2) { grid-column: 3; grid-row: 1; }
.drag-grid-container.layout-6 .drag-grid-slot:nth-child(3) { grid-column: 3; grid-row: 2; }
.drag-grid-container.layout-6 .drag-grid-slot:nth-child(4) { grid-column: 1; grid-row: 3; }
.drag-grid-container.layout-6 .drag-grid-slot:nth-child(5) { grid-column: 2; grid-row: 3; }
.drag-grid-container.layout-6 .drag-grid-slot:nth-child(6) { grid-column: 3; grid-row: 3; }
.drag-grid-container.layout-9 { grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-rows: repeat(3, minmax(0, 1fr)); }

.drag-grid-slot {
  min-height: 180px;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  background: color-mix(in oklch, var(--surface) 90%, transparent);
  border: 1px solid color-mix(in oklch, var(--border) 86%, transparent);
  box-shadow: var(--shadow);
}
.drag-grid-slot.drag-over {
  border-color: var(--accent);
  background: color-mix(in oklch, var(--accent) 12%, transparent);
}
.drag-slot-video {
  flex: 1;
  min-height: 0;
  width: 100%;
  background:
    linear-gradient(135deg, color-mix(in oklch, var(--accent) 14%, transparent), transparent 40%),
    repeating-linear-gradient(0deg, color-mix(in oklch, var(--fg) 5%, transparent) 0 1px, transparent 1px 24px),
    color-mix(in oklch, var(--bg) 88%, var(--surface));
  object-fit: contain;
}
.drag-slot-status {
  position: absolute;
  bottom: 12px;
  left: 14px;
  color: var(--muted);
  font: 12px var(--font-mono);
  pointer-events: none;
}

.slot-controls {
  position: absolute;
  top: 10px;
  right: 10px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity .18s ease;
  pointer-events: none;
  z-index: 10;
}
.drag-grid-slot:hover .slot-controls,
.fullscreen-slot .slot-controls {
  opacity: 1;
  pointer-events: auto;
}
.slot-btn {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in oklch, var(--surface-2) 86%, transparent);
  color: var(--fg);
  font-size: 12px;
  padding: 5px 10px;
  cursor: pointer;
}
.slot-btn:hover { background: color-mix(in oklch, var(--accent) 18%, transparent); }

.fullscreen-slot {
  position: fixed !important;
  top: 0;
  left: 0;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 9999;
  border-radius: 0 !important;
}

@media (max-width: 1100px) {
  .monitor-wall { grid-template-columns: 1fr; }
  .camera-tree { max-height: 320px; }
  .player-stage { min-height: 520px; }
}

@media (max-width: 720px) {
  .drag-grid-container.layout-4,
  .drag-grid-container.layout-6,
  .drag-grid-container.layout-9 { grid-template-columns: 1fr; grid-template-rows: none; }
  .drag-grid-container.layout-6 .drag-grid-slot:nth-child(n) { grid-column: auto; grid-row: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }

  .btn:hover,
  .toast {
    transform: none;
  }
}