:root {
  color-scheme: light dark;

  &:has(> head > meta[name="color-scheme"][content="dark"]) {
    color-scheme: dark;
  }
  &:has(> head > meta[name="color-scheme"][content="light"]) {
    color-scheme: light;
  }

  --bg-page: light-dark(#f4f6f9, #0d1117);
  --bg-card: light-dark(#ffffff, #161b22);
  --bg-subtle: light-dark(#eef2f7, #21262d);
  --bg-canvas: #000000;
  --text-main: light-dark(#1a202c, #e6edf3);
  --text-muted: light-dark(#57606a, #8b949e);
  --border-color: light-dark(#d0d7de, #30363d);
  --accent: light-dark(#0969da, #2f81f7);
  --accent-hover: light-dark(#0550ae, #58a6ff);
  --accent-subtle: light-dark(#ddf4ff, #1f2d3d);
  --success: light-dark(#1a7f37, #3fb950);
  --warning: light-dark(#9a6700, #d29922);
  --shadow-sm: light-dark(0 1px 3px rgba(15, 23, 42, 0.07), 0 1px 4px rgba(0, 0, 0, 0.4));
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.4;
}

/* Header / Topbar Base */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.5rem, 1vw, 0.85rem);
  padding: 0.5rem clamp(0.75rem, 1.5vw, 1.25rem);
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  flex-wrap: nowrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0 !important;
  min-width: max-content;
  z-index: 1;
}

.brand-badge {
  background-color: var(--accent-subtle);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.25rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.brand h1 {
  font-size: 1.15rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
}

.version-badge {
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 0.1rem 0.45rem;
  margin-left: 0.35rem;
  letter-spacing: 0.02em;
  line-height: 1.25;
  vertical-align: middle;
}

.subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: min(280px, 18vw);
}

.telemetry-strip {
  display: flex;
  align-items: center;
  gap: clamp(0.6rem, 1vw, 1.25rem);
  background-color: var(--bg-subtle);
  padding: 0.35rem clamp(0.5rem, 0.75vw, 0.9rem);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  flex-shrink: 1;
  min-width: 0;
}

.metric {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  white-space: nowrap;
}

.metric-value {
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.metric-value.highlight {
  color: var(--accent);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
  white-space: nowrap;
}

/* Responsive Topbar Adaptations */

/* 1. Laptops & iPads im Querformat (1041px bis 1300px, z. B. iPad Air 11" & mini) */
@media (max-width: 1300px) {
  .topbar {
    padding: 0.42rem 0.75rem;
    gap: 0.5rem;
  }
  .subtitle {
    display: none;
  }
  .hide-compact {
    display: none;
  }
  .telemetry-strip {
    gap: 0.65rem;
    padding: 0.28rem 0.6rem;
  }
  .metric-label {
    font-size: 0.62rem;
  }
  .metric-value {
    font-size: 0.82rem;
  }
  .topbar-actions {
    gap: 0.35rem;
  }
  .topbar-actions .btn {
    padding: 0.35rem 0.52rem;
    font-size: 0.76rem;
  }
}

/* 2. Tablets im Hochformat & Split-View (<= 1040px, z. B. iPad Pro 13", iPad Pro 11", iPad Air, iPad mini in Portrait) */
@media (max-width: 1040px) {
  .topbar {
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.45rem;
    padding: 0.45rem 0.75rem;
  }
  .brand {
    order: 1;
  }
  .topbar-actions {
    order: 2;
    margin-left: auto;
  }
  .telemetry-strip {
    order: 3;
    width: 100%;
    justify-content: space-around;
    margin-top: 0.2rem;
    padding: 0.3rem 0.6rem;
  }
}

/* 3. Smartphones & extrem schmale Fenster (<= 580px, z. B. iPhone) */
@media (max-width: 580px) {
  .topbar-actions .btn {
    padding: 0.35rem 0.45rem;
    font-size: 0.76rem;
  }
  .brand-badge {
    font-size: 0.7rem;
    padding: 0.2rem 0.4rem;
  }
  .brand h1 {
    font-size: 1.02rem;
  }
  .version-badge {
    font-size: 0.58rem;
    padding: 0.08rem 0.35rem;
  }
  .telemetry-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.3rem 0.6rem;
    text-align: center;
  }
  .telemetry-strip .metric {
    align-items: center;
  }
}

.theme-switcher {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 2px;
  gap: 2px;
  flex-shrink: 0;
}

.theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.88rem;
  width: 29px;
  height: 27px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.15s ease;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.theme-btn:hover {
  color: var(--text-main);
  background-color: rgba(128, 128, 128, 0.12);
}

.theme-btn.active {
  background-color: var(--bg-card);
  color: var(--text-main);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
}

/* Main Workspace Layout */
.workspace {
  display: grid;
  grid-template-columns: clamp(250px, 23vw, 320px) minmax(0, 1fr) clamp(250px, 23vw, 320px);
  grid-template-areas: "left stage right";
  gap: clamp(0.5rem, 1.1vw, 1rem);
  padding: clamp(0.5rem, 1.1vw, 1rem);
  flex: 1;
  align-items: start;
  min-width: 0;
}

.panel-left {
  grid-area: left;
  min-width: 0;
}

.canvas-stage {
  grid-area: stage;
  min-width: 0;
}

.panel-right {
  grid-area: right;
  min-width: 0;
}

/* Tablet Portrait Mode (iPad im Hochformat: 680px bis 1023px) */
@media (max-width: 1023px) {
  .workspace {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "stage stage"
      "left right";
  }
}

/* Narrow / Compact Split-View (< 680px) */
@media (max-width: 679px) {
  .workspace {
    grid-template-columns: 1fr;
    grid-template-areas:
      "stage"
      "left"
      "right";
  }
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: clamp(0.65rem, 1vw, 0.85rem) clamp(0.75rem, 1.2vw, 1rem);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-width: 0;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-header h2 {
  font-size: 0.9rem;
  font-weight: 600;
}

.status-pill {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background-color: var(--accent-subtle);
  color: var(--accent);
}

.status-pill.paused {
  color: var(--warning);
}

.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: 7px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  color: var(--text-main);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.btn:hover {
  border-color: var(--accent);
}

.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-accent {
  background-color: var(--accent-subtle);
  color: var(--accent);
  border-color: var(--accent);
}

.btn-small {
  padding: 0.25rem 0.55rem;
  font-size: 0.76rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
  color: var(--text-main);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.btn-small:hover {
  border-color: var(--accent);
}

kbd {
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  background-color: rgba(0, 0, 0, 0.15);
}

.field-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
}

.select-input,
.text-input {
  width: 100%;
  padding: 0.42rem 0.6rem;
  font-size: 0.82rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-page);
  color: var(--text-main);
}

.select-inline {
  padding: 0.25rem 0.45rem;
  font-size: 0.78rem;
  border-radius: 5px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-page);
  color: var(--text-main);
}

.hint,
.preset-caption {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Segmented Toggle (Quad vs Hex) */
.segmented {
  display: inline-flex;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 2px;
}

.seg-btn {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.22rem 0.55rem;
  border-radius: 4px;
  cursor: pointer;
}

.seg-btn.active {
  background-color: var(--accent);
  color: #ffffff;
}

/* Sliders & Parameter Rows */
.slider-group,
.param-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.slider-header,
.param-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
}

.param-header label {
  font-weight: 600;
}

.param-num-input {
  width: clamp(68px, 18vw, 86px);
  font-family: "SF Mono", ui-monospace, monospace;
  font-size: 0.78rem;
  padding: 0.15rem 0.35rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-page);
  color: var(--text-main);
  text-align: right;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
  touch-action: manipulation;
}

.params-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  cursor: pointer;
}

/* Center Canvas Stage */
.canvas-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.canvas-frame {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
}

#quiltCanvas {
  display: block;
  max-width: min(100%, 70dvh);
  max-height: 70dvh;
  width: auto;
  height: auto;
  aspect-ratio: 1 / 1;
  background-color: transparent;
  border-radius: 0;
}

@media (max-width: 1023px) {
  #quiltCanvas {
    max-height: 48dvh;
    max-width: min(100%, 48dvh);
  }
}

.canvas-Quickbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  width: 100%;
  max-width: 780px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 0.85rem;
}

.quick-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
}

.quick-actions {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

/* Palette Strip & List */
.palette-strip {
  width: 100%;
  height: 20px;
  border-radius: 5px;
  border: 1px solid var(--border-color);
}

.palette-list {
  max-height: 290px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-right: 0.2rem;
}

.pal-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-page);
  cursor: pointer;
  font-size: 0.78rem;
}

.pal-item:hover,
.pal-item.active {
  border-color: var(--accent);
  background-color: var(--accent-subtle);
}

.pal-item-name {
  font-family: "SF Mono", ui-monospace, monospace;
  font-weight: 600;
  min-width: 82px;
}

.pal-item-gradient {
  flex: 1;
  height: 12px;
  border-radius: 3px;
  border: 1px solid rgba(128, 128, 128, 0.3);
}

.badge-subtle {
  font-family: "SF Mono", ui-monospace, monospace;
  font-size: 0.74rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background-color: var(--bg-subtle);
}

/* Native <dialog> Modals (following modern-web-guidance) */
dialog {
  margin: auto;
  width: min(760px, 94vw);
  max-height: 90dvh;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background-color: var(--bg-card);
  color: var(--text-main);
  padding: 0;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

dialog:modal {
  overscroll-behavior: contain;
}

dialog::backdrop {
  overflow: hidden;
  overscroll-behavior: contain;
  background-color: rgba(0, 0, 0, 0.55);
}

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.dialog-header h2 {
  font-size: 1.05rem;
}

.dialog-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  width: 30px;
  height: 30px;
  cursor: pointer;
  color: var(--text-main);
}

.dialog-body {
  padding: 1.15rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dialog-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
}

/* Benchmark Arena bars */
.bench-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.bench-results {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  background-color: var(--bg-page);
  padding: 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.bench-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.bench-row-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
}

.bench-bar-track {
  height: 18px;
  background-color: var(--bg-subtle);
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.bench-bar-fill {
  height: 100%;
  background-color: var(--accent);
  transition: width 0.25s ease;
}

.native-comparison-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  background-color: var(--bg-subtle);
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.native-comparison-note h3 {
  font-size: 0.82rem;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

/* 16x16 Palette Editor */
.pal-editor-layout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 680px) {
  .pal-editor-layout {
    grid-template-columns: 1fr;
  }
}

#palGridCanvas {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: crosshair;
}

.pal-inspector {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pal-selected-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
}

.color-swatch-large {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 2px solid var(--border-color);
}

.pal-action-grid {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 0.25rem;
}

/* 5K / Dual-5K Wallpaper Studio Modal */
#dialogWallpaper {
  width: min(880px, 95vw);
}

.wp-studio-body {
  gap: 1.1rem;
}

.wp-preview-box {
  background-color: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.wp-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
}

.wp-canvas-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #000000;
  border-radius: 6px;
  padding: 6px;
  border: 1px solid var(--border-color);
}

#wpPreviewCanvas {
  max-width: 100%;
  max-height: 220px;
  width: auto;
  height: auto;
  border-radius: 3px;
}

.wp-controls-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 720px) {
  .wp-controls-grid {
    grid-template-columns: 1fr;
  }
}

.wp-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.wp-progress-area {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.wp-progress-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 600;
}

.wp-footer {
  justify-content: space-between;
  gap: 0.75rem;
}