:root {
  --bg-primary: #09090b;
  --bg-surface: #121215;
  --bg-elevated: #18181b;
  --bg-hover: #202025;
  --border-color: #27272a;
  --border-subtle: #1c1c20;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent-green: #22c55e;
  --accent-green-bg: rgba(34, 197, 94, 0.1);
  --accent-amber: #f59e0b;
  --accent-amber-bg: rgba(245, 158, 11, 0.1);
  --accent-red: #ef4444;
  --accent-red-bg: rgba(239, 68, 68, 0.1);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent !important;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 24px 16px;
  overflow-x: hidden;
}

.app-container {
  width: 100%;
  max-width: 400px;
  margin: auto 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Base Buttons */
button {
  -webkit-tap-highlight-color: transparent !important;
  outline: none !important;
  border: none;
  font-family: inherit;
  overflow: hidden !important;
  position: relative;
}

/* Header - Unboxed, sits directly on body */
.app-header {
  background: transparent;
  border: none;
  padding: 2px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-identity {
  display: flex;
  align-items: center;
  gap: 12px;
}

.device-icon-wrap {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.device-icon {
  width: 18px;
  height: 18px;
  stroke: var(--text-secondary);
}

.device-meta {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.device-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent-green);
  font-weight: 500;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
}

.status-indicator.offline {
  color: var(--accent-red);
}
.status-indicator.offline .status-dot {
  background: var(--accent-red);
}

.btn-refresh {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.btn-refresh svg {
  width: 14px;
  height: 14px;
  stroke: var(--text-muted);
}

.btn-refresh:hover {
  background: var(--bg-hover);
  border-color: var(--border-color);
}
.btn-refresh:hover svg {
  stroke: var(--text-primary);
}
.btn-refresh:active {
  transform: scale(0.96);
}

/* System Statusbar (Network + Battery) - Flat on body */
.system-statusbar {
  background: transparent;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  border-left: none;
  border-right: none;
  border-radius: 0;
  padding: 10px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.network-badge {
  display: flex;
  align-items: center;
  gap: 8px;
}

.network-icon {
  width: 16px;
  height: 16px;
  stroke: var(--text-secondary);
  color: var(--text-secondary);
}

.network-info {
  display: flex;
  align-items: center;
  gap: 6px;
}

.network-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.network-type {
  font-size: 10px;
  font-family: var(--font-mono);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--text-muted);
}

/* Battery Box UI */
.battery-card {
  display: flex;
  align-items: center;
  gap: 8px;
}

.battery-gauge {
  display: flex;
  align-items: center;
}

.battery-fill-wrap {
  width: 26px;
  height: 14px;
  border: 1.5px solid var(--text-secondary);
  border-radius: 3px;
  padding: 1px;
  position: relative;
  display: flex;
  align-items: center;
}

.battery-fill {
  height: 100%;
  border-radius: 1px;
  background: var(--accent-green);
  transition: width 0.3s ease, background 0.3s ease;
}

.battery-fill.amber {
  background: var(--accent-amber);
}

.battery-fill.red {
  background: var(--accent-red);
}

.battery-terminal {
  width: 2px;
  height: 6px;
  background: var(--text-secondary);
  border-radius: 0 1px 1px 0;
  margin-left: 1px;
}

.battery-lightning {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  fill: #ffffff;
}

.battery-percent-text {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
}

/* Telemetry Section - Borderless, sits directly on body */
.section-card {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding-left: 2px;
}

.metrics-row-group {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.metric-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.metric-top {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.metric-icon-wrap {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
}

.metric-icon {
  width: 12px;
  height: 12px;
  stroke: var(--text-secondary);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.metric-value.uptime-text {
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.meter-bar {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  background: var(--accent-green);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.meter-fill.amber {
  background: var(--accent-amber);
}

.meter-fill.red {
  background: var(--accent-red);
}

.metric-sub {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Controls List */
.controls-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-control {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
  width: 100%;
  text-align: left;
}

.btn-control:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-color);
}

.btn-control:active:not(:disabled) {
  transform: scale(0.99);
}

.control-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.control-icon {
  width: 18px;
  height: 18px;
  stroke: var(--text-secondary);
}

.control-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.control-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

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

.control-arrow {
  width: 14px;
  height: 14px;
  stroke: var(--text-muted);
}

/* Danger Button (Shut Down) */
.btn-control.danger {
  border-color: rgba(239, 68, 68, 0.15);
}
.btn-control.danger:hover:not(:disabled) {
  background: var(--accent-red-bg);
  border-color: rgba(239, 68, 68, 0.3);
}
.btn-control.danger .control-icon {
  stroke: var(--accent-red);
}
.btn-control.danger .control-name {
  color: var(--accent-red);
}

/* Locked State */
.btn-control.is-locked {
  background: rgba(24, 24, 27, 0.6) !important;
  border-color: var(--border-subtle) !important;
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-control.is-locked .control-icon {
  stroke: var(--accent-green);
}

.btn-control.is-locked .control-name {
  color: var(--text-secondary);
}

.locked-badge {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--accent-green-bg);
  color: var(--accent-green);
  border: 1px solid rgba(34, 197, 94, 0.25);
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 500;
}

/* PIN Screen: Flat directly on body canvas */
.pin-view {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 16px 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: 100%;
}

.connection-bridge-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 4px 0 8px 0;
  width: 100%;
  max-width: 240px;
}

.bridge-node {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.bridge-node svg {
  width: 18px;
  height: 18px;
  stroke: var(--text-secondary);
}

.bridge-line {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 2px;
}

.bridge-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-color);
}

.bridge-dot.active {
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

.pin-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.pin-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 240px;
  line-height: 1.4;
}

.pin-dots {
  display: flex;
  gap: 10px;
  margin: 4px 0;
}

.pin-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid var(--border-color);
  transition: all 0.15s ease;
}

.pin-dot.filled {
  background: var(--text-primary);
  border-color: var(--text-primary);
}

.pin-keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
  max-width: 240px;
}

.keypad-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 20px;
  font-family: var(--font-mono);
  font-weight: 500;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.1s ease, border-color 0.1s ease, transform 0.08s ease;
}

.keypad-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-color);
}

.keypad-btn:active {
  background: #27272a;
  transform: scale(0.96);
}

.keypad-btn.action {
  font-size: 12px;
  color: var(--text-muted);
}

.pin-error {
  color: var(--accent-red);
  font-size: 12px;
  min-height: 16px;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 340px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-header {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

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

.modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn-modal {
  flex: 1;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: inherit;
  transition: background 0.15s ease;
}

.btn-modal:hover {
  background: var(--bg-hover);
}

.btn-modal.confirm-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--text-primary);
  font-weight: 500;
}

.btn-modal.confirm-primary:hover {
  background: #e4e4e7;
  border-color: #e4e4e7;
}

.btn-modal.confirm-danger {
  background: var(--accent-red);
  color: #fff;
  border: 1px solid var(--accent-red);
  font-weight: 500;
}

.btn-modal.confirm-danger:hover {
  background: #dc2626;
  border-color: #dc2626;
}

.btn-modal.btn-cancel {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.btn-modal.btn-cancel:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* State View (Sleep / Restart / Shutdown Feedback) - Flat on body canvas */
.state-view {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 24px 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
}

.state-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
}

.state-icon-wrap svg {
  width: 24px;
  height: 24px;
  stroke: var(--text-secondary);
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.state-icon-wrap.is-sleeping svg {
  stroke: #a1a1aa;
}

.state-icon-wrap.is-restarting svg {
  stroke: var(--text-primary);
  animation: spinReboot 1.8s linear infinite;
}

.state-icon-wrap.is-off svg {
  stroke: var(--accent-red);
}

@keyframes spinReboot {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.state-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.state-desc {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 290px;
  line-height: 1.5;
}

.state-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  padding: 3px 9px;
  border-radius: 5px;
  color: var(--text-secondary);
  font-weight: 500;
}

.state-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}

.state-badge-dot.pulse {
  background: var(--accent-green);
  box-shadow: 0 0 6px var(--accent-green);
}

.state-footer {
  margin-top: 8px;
  width: 100%;
  max-width: 230px;
}

.btn-state-action {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-state-action:hover {
  background: var(--bg-hover);
  border-color: #3f3f46;
}

.btn-state-action:active {
  transform: scale(0.98);
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-primary);
  display: none;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
  z-index: 200;
}

.toast-container.active {
  display: flex;
}