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

[hidden] {
  display: none !important;
}

:root {
  --bg: #1a1a1e;
  --surface: #25252b;
  --surface2: #2e2e36;
  --border: #3a3a46;
  --text: #e0e0e8;
  --text-dim: #888898;
  --accent: #5d9cf5;
  --accent-dim: #3a6bbf;
  --warning: #e3b289;
  --warning-bg: rgba(92, 56, 40, 0.28);
  --font: "Segoe UI", system-ui, sans-serif;
  --mono: "Consolas", "Fira Code", monospace;
  --sidebar-w: 320px;
}

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font);
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.brand h1 {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
}

.brand p {
  margin-top: 2px;
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.load-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.url-group {
  display: flex;
  gap: 4px;
}

.status-strip {
  margin-left: auto;
  color: var(--text-dim);
  font-size: 12px;
  font-family: var(--mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 420px;
}

.main-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.main-layout.sidebar-collapsed {
  grid-template-columns: 0 minmax(0, 1fr);
}

.sidebar {
  min-height: 0;
  overflow-y: auto;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: opacity 160ms ease, transform 160ms ease;
}

.main-layout.sidebar-collapsed .sidebar {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-12px);
  overflow: hidden;
}

.panel {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-footer {
  margin-top: auto;
  border-bottom: none;
  border-top: 1px solid var(--border);
}

.sidebar-footer button {
  width: 100%;
}

.panel h2,
.warnings-panel h2 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.toolbar-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 8px;
  align-items: center;
}

.toolbar-grid label {
  display: flex;
  gap: 5px;
  align-items: center;
  cursor: pointer;
  font-size: 12px;
}

.toolbar-grid label:has(select),
.toolbar-grid label:has(input[type="color"]) {
  justify-content: space-between;
}

.toolbar-grid button {
  grid-column: 1 / -1;
}

.kv-list {
  margin-top: 8px;
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 8px;
  row-gap: 3px;
  font-size: 12px;
}

.kv-list dt {
  color: var(--text-dim);
  white-space: nowrap;
}

.kv-list dd {
  margin: 0;
  min-width: 0;
  word-break: break-word;
}

.list-block {
  margin-top: 8px;
  display: grid;
  gap: 6px;
  font-size: 12px;
}

.list-item {
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface2);
  padding: 8px 10px;
}

.list-item strong {
  display: block;
  margin-bottom: 2px;
}

.warning-item {
  border-color: rgba(227, 178, 137, 0.34);
  background: var(--warning-bg);
  color: var(--warning);
}

.empty-state {
  color: var(--text-dim);
}

.viewport-panel {
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #0a0a10;
}

.viewport {
  flex: 1;
  min-height: 0;
  position: relative;
  overflow: hidden;
  background: #0a0a10;
  cursor: grab;
}

.viewport:active {
  cursor: grabbing;
}

.viewport canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.warnings-panel {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 10px 12px 12px;
}

.main-layout.sidebar-collapsed .warnings-panel {
  display: none;
}

.truck-select {
  width: 100%;
  margin-top: 6px;
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 8px;
  font-size: 12px;
  font-family: var(--font);
}

.truck-title {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: 4px 10px;
  color: var(--text);
  font-size: 11px;
  font-family: var(--mono);
  pointer-events: none;
  white-space: nowrap;
  max-width: calc(100% - 32px);
  overflow: hidden;
  text-overflow: ellipsis;
  display: none;
}

.truck-title:not(:empty) {
  display: block;
}

.viewport-watermark {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  color: rgba(120, 120, 130, 0.55);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  pointer-events: none;
  white-space: nowrap;
}

button {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font);
  white-space: nowrap;
}

button:hover {
  background: var(--border);
}

button.quiet {
  color: var(--text-dim);
  font-size: 11px;
}

button:disabled,
input:disabled,
select:disabled {
  opacity: 0.6;
  cursor: wait;
}

input[type="url"] {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 8px;
  font-size: 12px;
  font-family: var(--mono);
  width: 240px;
}

select,
input[type="color"] {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font);
}

select {
  padding: 5px 8px;
}

input[type="color"] {
  width: 40px;
  height: 26px;
  padding: 2px;
}

input[type="url"]:focus,
select:focus,
input[type="color"]:focus,
button:focus-visible {
  outline: none;
  border-color: var(--accent-dim);
}

input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

code {
  font-family: var(--mono);
  font-size: 0.94em;
}

@media (max-width: 1080px) {
  .status-strip {
    width: 100%;
    margin-left: 0;
    max-width: none;
  }
}

@media (max-width: 720px) {
  .topbar,
  .load-controls,
  .url-group {
    align-items: stretch;
  }

  .url-group {
    flex-direction: column;
  }

  .main-layout,
  .main-layout.sidebar-collapsed {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar,
  .main-layout.sidebar-collapsed .sidebar {
    display: none;
  }

  .toolbar-grid {
    grid-template-columns: 1fr;
  }

  input[type="url"] {
    width: 100%;
  }
}