:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --border-highlight: #388bfd;
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --text-dim: #6e7681;
  --accent-blue: #58a6ff;
  --accent-cyan: #39c5bb;
  --accent-green: #3fb950;
  --accent-yellow: #d29922;
  --accent-orange: #f0883e;
  --accent-red: #f85149;
  --accent-purple: #bc8cff;
  --card-radius: 12px;
  --transition: all 0.2s ease-in-out;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Feather Icons Helper */
.feather {
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  stroke: currentColor;
  vertical-align: middle;
  flex-shrink: 0;
}

/* Header */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.brand-link:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.45));
  transition: filter 0.2s ease, transform 0.2s ease;
  flex-shrink: 0;
}

.brand-link:hover .brand-logo-img {
  filter: drop-shadow(0 3px 14px rgba(236, 72, 153, 0.7));
  transform: scale(1.06);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text-main);
  transition: color 0.15s ease;
}

.brand-link:hover .logo-title {
  color: #fff;
}

.logo-sub {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color 0.15s ease;
}

.brand-link:hover .logo-sub {
  color: var(--accent-blue);
}

.channel-selector {
  display: flex;
  gap: 8px;
  margin-left: 12px;
}

.channel-selector-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 4px 10px;
}

.channel-dropdown-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
}

.channel-dropdown {
  background: transparent;
  border: none;
  color: var(--accent-blue);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  padding: 2px 4px;
}

.channel-dropdown option {
  background-color: var(--bg-secondary);
  color: var(--text-main);
  font-size: 13px;
}

/* Status indicator */
.conn-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.conn-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.conn-badge .dot.green {
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

.conn-badge .dot.yellow {
  background-color: var(--accent-yellow);
  box-shadow: 0 0 8px var(--accent-yellow);
}

.conn-badge .dot.red {
  background-color: var(--accent-red);
  box-shadow: 0 0 8px var(--accent-red);
}

/* User Pill & Auth */
.user-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(63, 185, 80, 0.12);
  border: 1px solid rgba(63, 185, 80, 0.3);
  padding: 4px 10px;
  border-radius: 20px;
}

.user-name {
  color: var(--accent-green);
  font-weight: 600;
  font-size: 12px;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-logout {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  border-radius: 50%;
  transition: var(--transition);
}

.btn-logout:hover {
  color: var(--accent-red);
  background-color: rgba(248, 81, 73, 0.2);
}

/* General Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  user-select: none;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed !important;
  pointer-events: none;
}

.btn-primary {
  background-color: #238636;
  color: #fff;
  border-color: rgba(240, 246, 252, 0.1);
}

.btn-primary:hover:not(:disabled) {
  background-color: #2ea043;
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: #2d333b;
  border-color: #444c56;
}

.btn-danger {
  background-color: #da3633;
  color: #fff;
  border-color: rgba(240, 246, 252, 0.1);
}

.btn-danger:hover:not(:disabled) {
  background-color: #f85149;
}

.btn-start {
  background-color: #238636;
  color: #fff;
  border: 1px solid rgba(240, 246, 252, 0.1);
  padding: 8px 18px;
}

.btn-start:hover:not(:disabled) {
  background-color: #2ea043;
}

.btn-stop {
  background-color: #da3633;
  color: #fff;
  border: 1px solid rgba(240, 246, 252, 0.1);
  padding: 8px 18px;
}

.btn-stop:hover:not(:disabled) {
  background-color: #f85149;
}

.btn-outline {
  background-color: transparent;
  color: var(--accent-blue);
  border-color: rgba(88, 166, 255, 0.4);
}

.btn-outline:hover:not(:disabled) {
  background-color: rgba(88, 166, 255, 0.1);
  border-color: var(--accent-blue);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
  border-radius: 6px;
}

/* Container */
.app-container {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex: 1;
}

/* Control Panel */
.control-panel {
  display: grid;
  grid-template-columns: 1.4fr 1.6fr;
  gap: 16px;
}

.card-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.record-card, .actuators-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Experiment Active Meta */
.active-study-meta {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.study-title-display {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.study-desc-display {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.study-op-display {
  font-size: 11px;
  color: var(--accent-blue);
  font-weight: 600;
}

.study-op-display .meta-label {
  color: var(--text-dim);
}

.record-actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.record-btn-group {
  display: flex;
  gap: 8px;
}

.record-info-pill {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 12px;
}

.rec-status-line {
  display: flex;
  align-items: center;
  gap: 6px;
}

.rec-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-dim);
}

.rec-dot.active {
  background-color: var(--accent-red);
  animation: pulse-red 1s infinite;
}

@keyframes pulse-red {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.rec-status {
  font-weight: 600;
  font-size: 12px;
  color: var(--text-main);
}

.rec-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
}

/* Actuators Grid */
.actuators-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.relay-box {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.relay-box.active-heater {
  border-color: var(--accent-orange);
  background-color: rgba(240, 136, 62, 0.1);
  box-shadow: 0 0 10px rgba(240, 136, 62, 0.15);
}

.relay-box.active-motor {
  border-color: var(--accent-cyan);
  background-color: rgba(57, 197, 187, 0.1);
  box-shadow: 0 0 10px rgba(57, 197, 187, 0.15);
}

.relay-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.relay-icon-box {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.active-heater .relay-icon-box {
  color: var(--accent-orange);
}

.active-motor .relay-icon-box {
  color: var(--accent-cyan);
}

.relay-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}

.relay-state-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
}

.active-heater .relay-state-label {
  color: var(--accent-orange);
}

.active-motor .relay-state-label {
  color: var(--accent-cyan);
}

/* Toggle Switch Button */
.toggle-btn {
  width: 44px;
  height: 24px;
  background-color: #30363d;
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  border: none;
  outline: none;
  transition: background-color 0.25s ease;
  flex-shrink: 0;
}

.toggle-btn .slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background-color: #f0f6fc;
  border-radius: 50%;
  transition: transform 0.25s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.toggle-btn.on {
  background-color: var(--accent-green);
}

.toggle-btn.on .slider {
  transform: translateX(20px);
}

.toggle-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Live Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 16px;
}

.metric-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
}

.metric-card.highlight-metric {
  border-color: rgba(57, 197, 187, 0.4);
  background: linear-gradient(180deg, rgba(57, 197, 187, 0.08) 0%, var(--bg-secondary) 100%);
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.metric-name {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: rgba(63, 185, 80, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.metric-badge.offline {
  background-color: rgba(139, 148, 158, 0.15);
  color: var(--text-dim);
  border-color: var(--border-color);
}

.temp-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
}

.temp-badge.t1 {
  background-color: rgba(240, 136, 62, 0.15);
  color: var(--accent-orange);
  border: 1px solid rgba(240, 136, 62, 0.3);
}

.temp-badge.t2 {
  background-color: rgba(210, 153, 34, 0.15);
  color: var(--accent-yellow);
  border: 1px solid rgba(210, 153, 34, 0.3);
}

.temp-badge.t3 {
  background-color: rgba(63, 185, 80, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.metric-value-box {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 10px 0;
}

.metric-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
}

.highlight-metric .metric-num {
  color: #56d4c8;
}

.metric-unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-dim);
}

.metric-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-dim);
  border-top: 1px solid rgba(48, 54, 61, 0.5);
  padding-top: 8px;
}

.sub-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-muted);
}

/* Raw Packet Monitor in Micrometer Card */
.raw-packet-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 5px 8px;
  margin: 8px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  gap: 8px;
}

.raw-packet-info {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
}

.raw-hex-label {
  color: var(--text-dim);
  font-weight: 700;
  font-size: 10px;
}

.raw-hex-code {
  color: var(--accent-cyan);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

.raw-packet-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.raw-rate-badge {
  background-color: rgba(56, 139, 253, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 139, 253, 0.3);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
}

.raw-btn-badge {
  background-color: rgba(63, 185, 80, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(63, 185, 80, 0.3);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
}

.raw-btn-badge.pressed {
  background-color: rgba(248, 81, 73, 0.2);
  color: var(--accent-red);
  border-color: var(--accent-red);
}

/* Main Interactive Chart */
.chart-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.chart-title-group h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.chart-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.archive-mode-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(90deg, rgba(56, 139, 253, 0.15) 0%, rgba(33, 38, 45, 0.8) 100%);
  border: 1px solid var(--accent-blue);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 12px;
  gap: 12px;
  animation: banner-pulse 3s infinite alternate;
}

@keyframes banner-pulse {
  from { border-color: rgba(56, 139, 253, 0.5); }
  to { border-color: rgba(56, 139, 253, 0.9); }
}

.archive-banner-info {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-blue);
}

.archive-banner-texts {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.archive-banner-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

.archive-banner-live-status {
  font-size: 11px;
  color: var(--text-muted);
}

.chart-canvas-wrapper {
  position: relative;
  height: 380px;
  width: 100%;
}

/* Event Log / Terminal Section */
.events-log-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.events-log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.events-log-title-group h2 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}

.events-log-subtitle {
  font-size: 12px;
  color: var(--text-muted);
}

.events-log-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.auto-scroll-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.auto-scroll-toggle input[type="checkbox"] {
  accent-color: var(--accent-blue);
  cursor: pointer;
}

.terminal-container {
  background-color: #05070a;
  border: 1px solid #252b35;
  border-radius: 8px;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  max-height: 240px;
  min-height: 120px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scroll-behavior: smooth;
}

.terminal-placeholder {
  color: var(--text-dim);
  font-style: italic;
}

.terminal-line {
  display: flex;
  align-items: baseline;
  gap: 10px;
  word-break: break-all;
}

.terminal-time {
  color: var(--text-dim);
  font-size: 11px;
  flex-shrink: 0;
}

.terminal-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.badge-evt-startup   { background: rgba(56, 139, 253, 0.2); color: var(--accent-blue); border: 1px solid rgba(56, 139, 253, 0.4); }
.badge-evt-serial    { background: rgba(63, 185, 80, 0.2); color: var(--accent-green); border: 1px solid rgba(63, 185, 80, 0.4); }
.badge-evt-val       { background: rgba(57, 197, 187, 0.2); color: var(--accent-cyan); border: 1px solid rgba(57, 197, 187, 0.4); }
.badge-evt-button    { background: rgba(240, 136, 62, 0.2); color: var(--accent-orange); border: 1px solid rgba(240, 136, 62, 0.4); }
.badge-evt-power     { background: rgba(188, 140, 255, 0.2); color: var(--accent-purple); border: 1px solid rgba(188, 140, 255, 0.4); }
.badge-evt-heartbeat { background: rgba(139, 148, 158, 0.15); color: var(--text-muted); border: 1px solid rgba(139, 148, 158, 0.3); }
.badge-evt-error     { background: rgba(248, 81, 73, 0.2); color: var(--accent-red); border: 1px solid rgba(248, 81, 73, 0.4); }
.badge-evt-log       { background: rgba(210, 153, 34, 0.2); color: var(--accent-yellow); border: 1px solid rgba(210, 153, 34, 0.4); }

.terminal-msg {
  color: var(--text-main);
  flex-grow: 1;
}

.terminal-hex {
  color: var(--text-dim);
  font-size: 11px;
  margin-left: 8px;
}

/* Archive Recordings Table */
.archive-section {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 20px;
}

.archive-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.archive-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.table-responsive {
  overflow-x: auto;
}

.archive-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.archive-table th {
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.archive-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  vertical-align: top;
}

.archive-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

.loading-td {
  text-align: center;
  color: var(--text-dim);
  padding: 24px !important;
}

.actions-col {
  text-align: right;
  min-width: 180px;
}

.table-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  width: 100%;
  max-width: 480px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  animation: modal-appear 0.2s ease-out;
}

@keyframes modal-appear {
  from { opacity: 0; transform: scale(0.95) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}

.modal-body {
  padding: 20px;
}

.modal-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.alert-box {
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 14px;
}

.alert-box.error {
  background-color: rgba(248, 81, 73, 0.15);
  border: 1px solid var(--accent-red);
  color: var(--accent-red);
}

.alert-box.hidden {
  display: none;
}

.form-group {
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input, .form-group textarea {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 13px;
  outline: none;
  font-family: var(--font-family);
  transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
  border-color: var(--border-highlight);
  box-shadow: 0 0 0 2px rgba(56, 139, 253, 0.2);
}

.input-readonly {
  background-color: var(--bg-tertiary) !important;
  color: var(--accent-blue) !important;
  cursor: not-allowed;
  font-weight: 600;
}

.field-hint {
  font-size: 11px;
  color: var(--text-dim);
  font-style: italic;
  margin-top: 2px;
}

.form-actions-row {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.register-link {
  font-size: 12px;
  color: var(--accent-blue);
  text-align: center;
  text-decoration: none;
}

.register-link:hover {
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

/* Responsive adjustments */
@media (max-width: 1080px) {
  .control-panel {
    grid-template-columns: 1fr;
  }
  .metrics-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .app-header {
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .app-container {
    padding: 14px;
    gap: 14px;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .actuators-grid {
    grid-template-columns: 1fr;
  }
  .chart-canvas-wrapper {
    height: 280px;
  }
}