/*           Design tokens                                                                                                                                                                    */
:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --border-hi: #484f58;
  --text: #c9d1d9;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-bg: rgba(88, 166, 255, 0.1);
  --green: #3fb950;
  --red: #f85149;
  --orange: #f0883e;
  --purple: #bc8cff;
}

/*           Reset                                                                                                                                                                                            */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 14px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/*           Header                                                                                                                                                                                         */
header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
header h1 {
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

/* Nav tabs */
#nav-tabs {
  display: flex;
  gap: 2px;
}
.tab {
  background: none;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 5px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition:
    color 0.15s,
    border-color 0.15s,
    background 0.15s;
}
.tab:hover {
  color: var(--text);
  border-color: var(--border);
}
.tab.active {
  color: var(--accent);
  background: var(--bg);
  border-color: var(--border);
}

.hdr-gap {
  flex: 1;
}

#room-config-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 5px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition:
    color 0.15s,
    border-color 0.15s;
}
#room-config-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

#row-scale-control,
#timing-mode-control {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

#row-scale-control label,
#timing-mode-control label {
  white-space: nowrap;
}

#row-scale-select,
#timing-mode-select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
  color-scheme: dark;
}

#row-scale-select:hover,
#row-scale-select:focus,
#timing-mode-select:hover,
#timing-mode-select:focus {
  border-color: var(--accent);
  outline: none;
}

#row-scale-select option,
#timing-mode-select option {
  background: var(--surface);
  color: var(--text);
}

#conn-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
#conn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  transition: background 0.3s;
}
#conn-dot.on {
  background: var(--green);
}

@media (max-width: 900px) {
  header {
    flex-wrap: wrap;
  }

  .hdr-gap {
    display: none;
  }

  #row-scale-control,
  #timing-mode-control {
    order: 4;
    justify-content: flex-start;
  }
}

/*           Workspace                                                                                                                                                                                */
#workspace {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/*           Views                                                                                                                                                                                               */
#views {
  flex: 1;
  position: relative;
  overflow: hidden;
}
.view {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.view.active {
  display: flex;
}

/*           Device grids                                                                                                                                                                          */
.device-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--border);
  overflow: auto;
}
#motion-grid {
  align-content: start;
}

/*           Panels                                                                                                                                                                                               */
.panel {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.panel-head {
  flex-shrink: 0;
  padding: 8px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}
.panel-ident {
  font-size: 14px;
  font-weight: 700;
  font-family: "Consolas", monospace;
}
.panel-meta {
  font-size: 11px;
  color: var(--muted);
  text-align: right;
  word-break: break-word;
}

.panel-subhead {
  flex-shrink: 0;
  padding: 6px 14px;
  background: #11161d;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.panel-body {
  flex: 1;
  min-height: 0;
  display: flex;
}
.panel-body canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Waterfall canvas: pixelated upscale */
.panel--wf .panel-body {
  flex-direction: column;
  min-height: 200px;
}
.wf-heatmap-wrap {
  flex: 1;
  min-height: 180px;
}
.wf-profile-wrap {
  flex: 0 0 64px;
  border-top: 1px solid var(--border);
  background: #020817;
}
.wf-velocity-wrap {
  flex: 0 0 60px;
  border-top: 1px solid var(--border);
  background: #030712;
}
.wf-heatmap-wrap canvas,
.wf-profile-wrap canvas,
.wf-velocity-wrap canvas {
  width: 100%;
  display: block;
}
.wf-heatmap-wrap canvas {
  height: 100%;
}
.wf-profile-wrap canvas {
  height: 64px;
}
.wf-velocity-wrap canvas {
  height: 60px;
}
.panel--wf .panel-body canvas {
  image-rendering: pixelated;
}
.panel--wf .wf-profile-wrap canvas,
.panel--wf .wf-velocity-wrap canvas {
  image-rendering: auto;
}

/* Radar panel: full-width at top of motion grid */
.panel--radar {
  grid-column: 1 / -1;
}
.panel--radar .panel-body {
  min-height: 300px;
  max-height: 420px;
}
.panel--radar .panel-body canvas {
  width: 100%;
  height: 100%;
  image-rendering: auto;
}
.radar-btn {
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  font-family: inherit;
  transition:
    border-color 0.15s,
    color 0.15s;
}
.radar-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}
.radar-btn.active {
  background: var(--purple);
  color: #fff;
  border-color: var(--purple);
}
.radar-btn.danger {
  color: var(--red);
}
.radar-btn.danger:hover {
  border-color: var(--red);
}

/* Motion canvas: smooth, auto height */
.panel--mo .panel-body {
  padding: 8px;
  align-items: center;
}
.panel--mo .panel-body canvas {
  width: 100%;
  height: auto;
  image-rendering: auto;
}

.panel-foot {
  flex-shrink: 0;
  padding: 6px 14px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}
.badge-tx {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
}
.badge-rx {
  background: rgba(63, 185, 80, 0.15);
  color: var(--green);
}

/*           3D Room view                                                                                                                                                                          */
#canvas-3d {
  flex: 1;
  width: 100%;
  display: block;
  cursor: grab;
}
#canvas-3d:active {
  cursor: grabbing;
}

#controls-3d {
  flex-shrink: 0;
  padding: 8px 20px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}
.ctrl {
  display: flex;
  align-items: center;
  gap: 6px;
}
.ctrl label {
  white-space: nowrap;
}
.ctrl input[type="range"] {
  width: 100px;
  accent-color: var(--accent);
}
.ctrl-val {
  min-width: 32px;
  font-family: monospace;
  text-align: right;
  color: var(--text);
}
.ctrl-btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition:
    border-color 0.15s,
    color 0.15s;
}
.ctrl-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/*           Log pane                                                                                                                                                                                      */
#log-pane {
  flex-shrink: 0;
  height: 220px;
  min-height: 40px;
  border-top: 2px solid var(--border);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  position: relative;
}
#log-pane.collapsed {
  height: 40px;
}

#log-resize {
  position: absolute;
  top: -4px;
  left: 0;
  right: 0;
  height: 8px;
  cursor: ns-resize;
  z-index: 5;
}
#log-resize:hover,
#log-resize.dragging {
  background: var(--accent);
  opacity: 0.35;
}

#log-header {
  flex-shrink: 0;
  height: 40px;
  padding: 0 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.log-hdr-gap {
  flex: 1;
}
.log-icon-btn {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  padding: 3px 5px;
  border-radius: 3px;
}
.log-icon-btn:hover {
  color: var(--text);
  background: var(--border);
}
#log-title {
  font-size: 13px;
  font-weight: 600;
}
#log-count {
  background: var(--border);
  color: var(--muted);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
}
.log-btn {
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  transition:
    border-color 0.15s,
    color 0.15s;
  white-space: nowrap;
}
.log-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}
.log-btn.paused {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
#log-filter {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 11px;
  cursor: pointer;
}
#log-filter:hover {
  border-color: var(--accent);
}

#log-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
  font-family: "Consolas", monospace;
  font-size: 11px;
}
#log-body::-webkit-scrollbar {
  width: 10px;
}
#log-body::-webkit-scrollbar-track {
  background: var(--bg);
}
#log-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 5px;
  border: 2px solid var(--bg);
}

.log-entry {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 6px;
  overflow: hidden;
}
.log-entry:hover {
  border-color: var(--border-hi);
}
.log-entry-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  cursor: pointer;
  user-select: none;
}
.log-arrow {
  color: var(--muted);
  font-size: 10px;
  transition: transform 0.15s;
  flex-shrink: 0;
}
.log-entry.open .log-arrow {
  transform: rotate(90deg);
}
.log-time {
  color: var(--muted);
  font-size: 10px;
  flex-shrink: 0;
}
.log-device {
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}
.log-type {
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 9px;
  padding: 1px 5px;
  border-radius: 3px;
  font-weight: 700;
  text-transform: uppercase;
  flex-shrink: 0;
}
.log-entry-gap {
  flex: 1;
}
.log-copy-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-family: inherit;
}
.log-copy-btn:hover {
  border-color: var(--border);
  color: var(--accent);
}
.log-entry-body {
  display: none;
  padding: 8px 10px;
  border-top: 1px solid var(--border);
  white-space: pre;
  overflow-x: auto;
  font-size: 10px;
  line-height: 1.5;
}
.log-entry.open .log-entry-body {
  display: block;
}
.log-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 8px;
  color: var(--muted);
}

/* JSON syntax */
.jk {
  color: #ff7b72;
}
.js {
  color: #a5d6ff;
}
.jn {
  color: #79c0ff;
}
.jb {
  color: #ffa657;
}
.jz {
  color: var(--muted);
}

/*           OTA FAB                                                                                                                                                                                         */
#ota-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 50px;
  height: 50px;
  background: #1f6feb;
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(31, 111, 235, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    background 0.2s;
}
#ota-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(31, 111, 235, 0.6);
}
#ota-fab.flashing {
  background: #2ea043;
  box-shadow: 0 4px 14px rgba(46, 160, 67, 0.4);
}

/*           OTA Modal                                                                                                                                                                                   */
#ota-overlay {
  position: fixed;
  inset: 0;
  background: rgba(1, 4, 9, 0.75);
  backdrop-filter: blur(4px);
  z-index: 60;
  display: none;
  align-items: center;
  justify-content: center;
}
#ota-overlay.open {
  display: flex;
}

#ota-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
  width: 90%;
  max-width: 540px;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.25s ease;
}
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ota-head {
  padding: 18px 24px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ota-head h2 {
  font-size: 16px;
  font-weight: 600;
}
.ota-x {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 22px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.ota-x:hover {
  color: var(--text);
}

.ota-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}
.ota-field {
  margin-bottom: 20px;
}
.ota-field:last-child {
  margin-bottom: 0;
}
.ota-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.ota-select {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 14px;
  cursor: pointer;
}
.ota-select:hover {
  border-color: var(--accent);
}
.ota-select:focus {
  outline: none;
  border-color: #1f6feb;
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.1);
}

#ota-devices {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 180px;
  overflow-y: auto;
  padding: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.ota-dev {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.15s;
  user-select: none;
}
.ota-dev:hover {
  border-color: var(--border-hi);
}
.ota-dev.sel {
  border-color: #1f6feb;
  background: rgba(31, 111, 235, 0.08);
}
.ota-chk {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition:
    background 0.15s,
    border-color 0.15s;
}
.ota-dev.sel .ota-chk {
  background: #1f6feb;
  border-color: #1f6feb;
}
.ota-chk::after {
  content: "   ";
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  display: none;
}
.ota-dev.sel .ota-chk::after {
  display: block;
}
.ota-dev-name {
  flex: 1;
  font-family: "Consolas", monospace;
  font-size: 13px;
  font-weight: 600;
}
.ota-dev-role {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 700;
  text-transform: uppercase;
}
.ota-dev-role.tx {
  background: rgba(88, 166, 255, 0.2);
  color: var(--accent);
}
.ota-dev-role.rx {
  background: rgba(63, 185, 80, 0.2);
  color: var(--green);
}

#ota-progress {
  padding: 10px 24px;
  background: rgba(31, 111, 235, 0.07);
  border-top: 1px solid var(--border);
  display: none;
}
#ota-progress.show {
  display: block;
}
#ota-prog-label {
  font-size: 12px;
  color: var(--text);
  margin-bottom: 7px;
}
.ota-bar {
  height: 5px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 4px;
}
.ota-fill {
  height: 100%;
  background: #1f6feb;
  border-radius: 3px;
  width: 0;
  transition: width 0.3s;
}
.ota-fill.ok {
  background: var(--green);
}
.ota-fill.err {
  background: var(--red);
}
#ota-prog-pct {
  font-size: 11px;
  color: var(--muted);
  font-family: monospace;
}

.ota-foot {
  padding: 16px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
}
.ota-action {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.15s,
    border-color 0.15s;
}
.ota-action:hover {
  background: var(--border);
}
.ota-action.primary {
  background: #1f6feb;
  color: #fff;
  border-color: #1f6feb;
}
.ota-action.primary:hover {
  background: #1a5cd7;
}
.ota-action:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.ota-action:disabled:hover {
  background: var(--surface);
  border-color: var(--border);
}