:root {
  --bg: #111827;
  --surface: #1f2937;
  --surface-alt: #374151;
  --border: #4b5563;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --radius: 6px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SF Mono', 'Menlo', 'Consolas', monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}
button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  border-radius: var(--radius);
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s;
}
button:disabled { opacity: 0.4; cursor: not-allowed; }

/* Top Bar */
#top-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
#conn-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
}
#conn-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--error);
  transition: background 0.3s;
}
#conn-dot.connected { background: var(--success); }
.btn-connect {
  background: var(--primary);
  color: white;
}
.btn-connect:hover:not(:disabled) { background: var(--primary-hover); }
.btn-disconnect {
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-disconnect:hover:not(:disabled) { background: var(--border); }
#device-info {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--mono);
  display: flex;
  gap: 16px;
}
#device-info span { white-space: nowrap; }

/* Main Layout */
#main-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  overflow: hidden;
}

/* Sidebar */
#sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
#test-controls {
  padding: 10px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}
#test-controls button { flex: 1; font-size: 12px; padding: 8px; }
.btn-run-all { background: var(--success); color: white; }
.btn-run-all:hover:not(:disabled) { background: #059669; }
.btn-stop { background: var(--error); color: white; }
.btn-stop:hover:not(:disabled) { background: #dc2626; }
#test-tree {
  flex: 1;
  overflow-y: auto;
  padding: 6px 0;
}
.cat-item {
  border-bottom: 1px solid var(--border);
}
.cat-header {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  font-weight: 600;
  gap: 6px;
}
.cat-header:hover { background: var(--surface-alt); }
.cat-arrow {
  font-size: 10px;
  transition: transform 0.2s;
  color: var(--text-muted);
  width: 14px;
  text-align: center;
}
.cat-item.open .cat-arrow { transform: rotate(90deg); }
.cat-name { flex: 1; }
.cat-count {
  font-size: 11px;
  color: var(--text-dim);
  font-weight: 400;
}
.cat-run-btn {
  background: var(--surface-alt);
  color: var(--text-muted);
  padding: 2px 8px;
  font-size: 11px;
  border: 1px solid var(--border);
}
.cat-run-btn:hover:not(:disabled) { background: var(--border); color: var(--text); }
.cat-tests { display: none; }
.cat-item.open .cat-tests { display: block; }
.test-item {
  display: flex;
  align-items: center;
  padding: 5px 10px 5px 30px;
  font-size: 12px;
  gap: 6px;
  cursor: pointer;
}
.test-item:hover { background: rgba(255,255,255,0.03); }
.test-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
}
.test-icon.passed { border-color: var(--success); background: var(--success); color: white; }
.test-icon.failed { border-color: var(--error); background: var(--error); color: white; }
.test-icon.skipped { border-color: var(--warning); background: var(--warning); color: #111; }
.test-icon.running { border-color: var(--primary); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.4; } }
.test-name { flex: 1; color: var(--text-muted); }
.test-item.passed .test-name { color: var(--success); }
.test-item.failed .test-name { color: var(--error); }
.test-item.running .test-name { color: var(--primary); }
.test-duration { font-family: var(--mono); font-size: 11px; color: var(--text-dim); }

/* Content Area */
#content {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
#tab-bar {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding: 0 12px;
}
.tab-btn {
  background: none;
  color: var(--text-muted);
  padding: 10px 16px;
  border-radius: 0;
  font-size: 13px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-panel { display: none; flex: 1; overflow-y: auto; padding: 16px; }
.tab-panel.active { display: block; }

/* Dashboard Panel */
#dashboard-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
#dashboard-controls label { font-size: 13px; color: var(--text-muted); }
#dashboard-controls input[type=checkbox] { accent-color: var(--primary); }
#poll-interval { font-family: var(--mono); font-size: 12px; color: var(--text-dim); }
.btn-poll { background: var(--surface-alt); color: var(--text); border: 1px solid var(--border); font-size: 12px; padding: 4px 12px; }
.btn-poll:hover:not(:disabled) { background: var(--border); }
#dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.dash-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.dash-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.dash-value {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--mono);
}
.dash-value.off { color: var(--text-dim); }
.dash-value.on { color: var(--success); }
.dash-value.eco { color: var(--warning); }
.dash-value.boost { color: var(--error); }
.dash-value.error { color: var(--error); }
.dash-sub {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
  font-family: var(--mono);
}

/* Filter Section */
.dash-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 20px 0 10px 0;
}
#filter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.filter-mode-card .dash-value.duct-out { color: var(--text-dim); }
.filter-mode-card .dash-value.carbon { color: var(--primary); }
.filter-mode-card .dash-value.integrated { color: #a78bfa; }
.ctrl-btn.unsupported {
  opacity: 0.35;
  text-decoration: line-through;
}
.supported-filters-edit {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.supported-filters-edit label {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.supported-filters-edit input[type="checkbox"] {
  accent-color: var(--primary);
}
.supported-filters-edit .btn-send {
  padding: 3px 10px;
  font-size: 11px;
}
.filter-bar-track {
  margin-top: 8px;
  height: 4px;
  background: var(--surface-alt);
  border-radius: 2px;
  overflow: hidden;
}
.filter-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--success);
  transition: width 0.5s, background 0.5s;
}
.filter-bar-fill.warning { background: var(--warning); }
.filter-bar-fill.expired { background: var(--error); }
#d-secondary-card.hidden { display: none; }

/* Device Controls */
.ctrl-group {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.ctrl-btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  min-width: 48px;
  text-align: center;
}
.ctrl-btn:hover:not(:disabled) { background: var(--surface-alt); }
.ctrl-btn.ctrl-on { color: var(--success); border-color: var(--success); }
.ctrl-btn.ctrl-on:hover:not(:disabled) { background: rgba(16,185,129,0.15); }
.ctrl-btn.ctrl-off { color: var(--error); border-color: var(--error); }
.ctrl-btn.ctrl-off:hover:not(:disabled) { background: rgba(239,68,68,0.15); }
.ctrl-btn.ctrl-eco { color: var(--warning); border-color: var(--warning); }
.ctrl-btn.ctrl-eco:hover:not(:disabled) { background: rgba(245,158,11,0.15); }
.ctrl-btn.ctrl-toggle { color: var(--primary); border-color: var(--primary); }
.ctrl-btn.ctrl-toggle:hover:not(:disabled) { background: rgba(59,130,246,0.15); }
.ctrl-btn.ctrl-inc { color: var(--success); font-size: 18px; font-weight: 700; padding: 6px 14px; }
.ctrl-btn.ctrl-dec { color: var(--error); font-size: 18px; font-weight: 700; padding: 6px 14px; }
.ctrl-btn.ctrl-set { color: var(--primary); border-color: var(--primary); }
.ctrl-btn.flash-ok { background: rgba(16,185,129,0.25); border-color: var(--success); transition: none; }
.ctrl-btn.flash-err { background: rgba(239,68,68,0.25); border-color: var(--error); transition: none; }
.ctrl-slider-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 120px;
  max-width: 260px;
}
.ctrl-slider {
  flex: 1;
  accent-color: var(--primary);
  cursor: pointer;
}
.ctrl-slider:disabled { opacity: 0.4; cursor: not-allowed; }
.ctrl-slider-val {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-muted);
  min-width: 36px;
  text-align: right;
}

/* Results Panel */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}
.result-card.passed { border-left: 3px solid var(--success); }
.result-card.failed { border-left: 3px solid var(--error); }
.result-card.skipped { border-left: 3px solid var(--warning); }
.result-card.running { border-left: 3px solid var(--primary); }
.result-status {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  width: 60px;
  flex-shrink: 0;
}
.result-card.passed .result-status { color: var(--success); }
.result-card.failed .result-status { color: var(--error); }
.result-card.skipped .result-status { color: var(--warning); }
.result-card.running .result-status { color: var(--primary); }
.result-name { flex: 1; }
.result-msg { color: var(--text-muted); font-size: 12px; font-family: var(--mono); max-width: 400px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Log Panel */
#log-content {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-muted);
}
.log-tx { color: #60a5fa; }
.log-rx { color: #34d399; }
.log-err { color: #f87171; }
.log-warn { color: #fbbf24; }
.log-info { color: var(--text-muted); }
.log-test { color: #a78bfa; }

/* Bottom Bar */
#bottom-bar {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 12px;
}
.stat { display: flex; align-items: center; gap: 5px; }
.stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.stat-dot.total { background: var(--text-muted); }
.stat-dot.passed { background: var(--success); }
.stat-dot.failed { background: var(--error); }
.stat-dot.skipped { background: var(--warning); }
.stat-dot.running { background: var(--primary); }
#bottom-bar .spacer { flex: 1; }
.btn-export {
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 12px;
}
.btn-export:hover:not(:disabled) { background: var(--border); }

/* Feature visibility: hidden by default, shown when body has matching class */
.feature-tower,
.feature-keylock,
.feature-filterModes,
.feature-integrated,
.feature-light,
.feature-airQuality,
.feature-automode,
.feature-recirculation,
.feature-boostConfig {
  display: none !important;
}
body.has-tower          .feature-tower          { display: block !important; }
body.has-keylock        .feature-keylock        { display: block !important; }
body.has-filterModes    .feature-filterModes    { display: block !important; }
body.has-integrated     .feature-integrated     { display: block !important; }
body.has-light          .feature-light          { display: block !important; }
body.has-airQuality     .feature-airQuality     { display: block !important; }
body.has-automode       .feature-automode       { display: block !important; }
body.has-recirculation  .feature-recirculation  { display: block !important; }
body.has-boostConfig    .feature-boostConfig    { display: block !important; }

/* Air Quality section */
#airquality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.dash-value.warning { color: var(--warning); }

/* Manual Command Panel */
#manual-cmd {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
#manual-cmd input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 13px;
}
#manual-cmd input::placeholder { color: var(--text-dim); }
.btn-send { background: var(--primary); color: white; }

/* Modal */
#modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
#modal-overlay.visible { display: flex; }
#modal-dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  max-width: 480px;
  width: 90%;
  text-align: center;
}
#modal-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
#modal-message {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}
#modal-timer {
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--mono);
  margin-bottom: 20px;
}
#modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.btn-modal-confirm {
  background: var(--success);
  color: white;
  padding: 10px 32px;
  font-size: 15px;
  animation: gentle-pulse 2s infinite;
}
.btn-modal-confirm:hover { background: #059669; }
.btn-modal-skip {
  background: var(--surface-alt);
  color: var(--text-muted);
  padding: 10px 24px;
  border: 1px solid var(--border);
}
@keyframes gentle-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(16,185,129,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(16,185,129,0); }
}