:root {
  color-scheme: dark;
  --bg: #0d0f13;
  --panel: #171a21;
  --panel-2: #20242d;
  --line: #343946;
  --text: #f3f6fb;
  --muted: #9aa3b4;
  --accent: #30e7d0;
  --danger: #ff6b6b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr) 320px;
  min-height: 100vh;
}

.sidebar,
.inspector {
  background: #11141a;
  border-color: var(--line);
  padding: 18px;
}

.sidebar {
  border-right: 1px solid var(--line);
}

.inspector {
  border-left: 1px solid var(--line);
  overflow: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: var(--accent);
  color: #071012;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small,
.topbar p,
.output-strip small {
  color: var(--muted);
}

.mode-tabs {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.mode-tab,
.preset,
.language,
.ghost,
.secondary,
.primary,
.wide {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
}

.mode-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  text-align: left;
}

.mode-tab.is-active,
.preset.is-active,
.language.is-active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
}

.panel {
  margin-bottom: 18px;
}

.panel h2 {
  margin: 0 0 10px;
  color: #c9d1df;
  font-size: 13px;
  font-weight: 700;
}

.preset-list {
  display: grid;
  gap: 7px;
}

.preset {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 10px;
  color: #d7deeb;
}

.preset small {
  color: var(--muted);
}

.language-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.language {
  min-height: 32px;
  font-size: 13px;
}

.ai-layout-button {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 18%, var(--panel));
  color: #f8fffd;
  font-weight: 800;
}

.layout-options {
  display: grid;
  gap: 7px;
  margin-top: 8px;
}

.layout-option {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: #d7deeb;
  padding: 0 10px;
  text-align: left;
}

.layout-option.is-active {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
}

.workspace {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}

.topbar h1 {
  margin: 0;
  font-size: 22px;
}

.topbar p {
  margin: 4px 0 0;
}

.actions {
  display: flex;
  gap: 8px;
}

.ghost {
  width: 42px;
  font-size: 18px;
}

.primary {
  padding: 0 14px;
  background: var(--accent);
  color: #071012;
  border-color: transparent;
  font-weight: 700;
}

.secondary {
  padding: 0 12px;
  background: var(--panel-2);
  color: #d7deeb;
  font-weight: 700;
}

.stage-wrap {
  position: relative;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow: auto;
  background:
    linear-gradient(45deg, #151820 25%, transparent 25%),
    linear-gradient(-45deg, #151820 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #151820 75%),
    linear-gradient(-45deg, transparent 75%, #151820 75%);
  background-color: #101219;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  background-size: 24px 24px;
}

.canvas-text-editor {
  position: absolute;
  z-index: 5;
  display: none;
  margin: 0;
  border: 2px solid var(--accent);
  border-radius: 4px;
  background: rgba(16, 19, 25, 0.92);
  color: #ffffff;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  resize: none;
  overflow: hidden;
}

canvas {
  max-width: 100%;
  max-height: calc(100vh - 188px);
  background: #101319;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.38);
  cursor: default;
  touch-action: none;
  user-select: none;
}

.output-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  background: #11141a;
}

.output-strip div {
  padding: 14px 20px;
  border-right: 1px solid var(--line);
}

.output-strip div:last-child {
  border-right: 0;
}

.metric {
  display: block;
  font-size: 20px;
  font-weight: 800;
}

label {
  display: grid;
  gap: 7px;
  margin-bottom: 12px;
  color: #c9d1df;
  font-size: 13px;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  padding: 10px;
  outline: none;
}

input[type="color"] {
  height: 40px;
  padding: 4px;
}

textarea {
  resize: vertical;
  line-height: 1.45;
}

.canvas-text-editor {
  box-sizing: border-box;
  width: auto;
  padding: 4px 6px;
  border-color: var(--accent);
  background: rgba(16, 19, 25, 0.92);
}

.check-row {
  grid-template-columns: 18px 1fr;
  align-items: center;
}

.check-row input {
  width: 18px;
}

.wide {
  width: 100%;
  background: var(--panel-2);
}

.wide.danger {
  margin-top: 10px;
  border-color: color-mix(in srgb, var(--danger) 45%, var(--line));
  color: #ffd6d6;
}

.file-control input {
  margin-top: 2px;
  padding: 8px;
}

.asset-library {
  display: grid;
  gap: 8px;
  margin: 8px 0 12px;
}

.asset-empty {
  border: 1px dashed var(--line);
  border-radius: 6px;
  color: var(--muted);
  padding: 10px;
  font-size: 12px;
  line-height: 1.4;
}

.asset-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  padding: 8px;
}

.asset-thumb {
  width: 44px;
  height: 44px;
  border-radius: 5px;
  object-fit: contain;
  background: #0d1016;
}

.asset-meta {
  min-width: 0;
}

.asset-name {
  overflow: hidden;
  color: #d7deeb;
  font-size: 12px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.asset-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-top: 6px;
}

.asset-actions button {
  min-height: 30px;
  padding: 0 8px;
  font-size: 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.tool-grid .wide {
  min-height: 36px;
  font-size: 12px;
}

.hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.selected-chip {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: #d7deeb;
  padding: 8px 10px;
  font-size: 13px;
}

.geometry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.geometry-grid label {
  margin: 0;
  gap: 5px;
  font-size: 12px;
}

.geometry-grid label:last-child {
  grid-column: 1 / -1;
}

.geometry-grid input:disabled {
  opacity: 0.45;
}

.template-status {
  margin-top: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(48, 231, 208, 0.08);
  color: #b8fff6;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.4;
}

@media (max-width: 1040px) {
  .shell {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .inspector {
    grid-column: 1 / -1;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 760px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .inspector {
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .topbar,
  .actions {
    align-items: stretch;
    flex-direction: column;
  }

  .output-strip {
    grid-template-columns: 1fr;
  }
}