.kn-lft-tool-wrap {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 20px 0;
  color: #222;
}

.kn-lft-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  width: 100%;
}

.kn-lft-sidebar {
  display: grid;
  gap: 12px;
  position: sticky;
  top: 90px;
  align-self: start;
  z-index: 2;
}

.kn-lft-stage {
  display: grid;
  gap: 12px;
  min-width: 0;
  width: 100%;
}

.kn-lft-group {
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

.kn-lft-group summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px 8px;
  font-weight: 600;
  font-size: 15px;
  background: #ffffff;
  position: relative;
  user-select: none;
}

.kn-lft-group summary::-webkit-details-marker {
  display: none;
}

.kn-lft-group summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: #666;
}

.kn-lft-group[open] summary::after {
  content: "–";
}

.kn-lft-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 0 16px 16px;
}

.kn-lft-controls label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
}

.kn-lft-controls select,
.kn-lft-controls input,
.kn-lft-controls button {
  font-size: 14px;
}

.kn-lft-viewer {
  position: relative;
  width: 100%;
  min-height: 620px;
  background: #dddddd;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.kn-lft-loader {
  position: absolute;
  left: 50%;
  bottom: 24px;
  z-index: 5;
  width: min(420px, calc(100% - 48px));
  transform: translateX(-50%);
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 12px;
  background: rgba(20, 22, 26, 0.86);
  color: #ffffff;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
  pointer-events: none;
}

.kn-lft-loader[hidden] {
  display: none;
}

.kn-lft-loader-label {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.kn-lft-loader-track {
  height: 9px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
}

.kn-lft-loader-track span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: #d8b56d;
  transition: width 160ms ease;
}

.kn-lft-loader-meta {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 12px;
  line-height: 1.3;
}

.kn-lft-bottom-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #ffffff;
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}

.kn-lft-preset-buttons,
.kn-lft-toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.kn-lft-preset-buttons button,
.kn-lft-export-button,
.kn-lft-reset-button {
  padding: 10px 14px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: #222;
  color: #fff;
  font-size: 14px;
}

.kn-lft-tool-wrap input[type="color"] {
  width: 100%;
  height: 38px;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

@media (max-width: 1000px) {
  .kn-lft-layout {
    grid-template-columns: 1fr;
  }

  .kn-lft-sidebar {
    position: static;
  }

  .kn-lft-viewer {
    min-height: 440px;
  }
}

.kn-lft-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

.kn-lft-header h2 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.1;
}

.kn-lft-header p {
  margin: 0;
  max-width: 72ch;
}

.kn-lft-tool-wrap .kn-lab-header {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

.kn-lft-tool-wrap .kn-lab-suite-kicker {
  display: inline-flex;
  margin-bottom: 0.25rem;
  color: rgb(229, 191, 95);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  line-height: 1.2;
  text-transform: uppercase;
}

.kn-lft-tool-wrap .kn-lab-title {
  margin: 0;
  color: #f7f3ea;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  font-weight: 800;
  line-height: 1.1;
}

.kn-lft-tool-wrap .kn-lab-subtitle {
  max-width: 76ch;
  margin: 0;
  color: #c8c0b2;
  font-size: 0.95rem;
  line-height: 1.45;
}

.kn-lab-shell .kn-lft-sidebar {
  gap: 14px;
}

@media (min-width: 1001px) {
  .kn-lab-shell .kn-lft-sidebar {
    max-height: min(720px, calc(100vh - 130px));
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-right: 4px;
    scrollbar-color: rgba(229, 191, 95, 0.7) rgba(255, 255, 255, 0.06);
    scrollbar-width: thin;
  }

  .kn-lab-shell .kn-lft-sidebar::-webkit-scrollbar {
    width: 8px;
  }

  .kn-lab-shell .kn-lft-sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 999px;
  }

  .kn-lab-shell .kn-lft-sidebar::-webkit-scrollbar-thumb {
    background: rgba(229, 191, 95, 0.7);
    border-radius: 999px;
  }
}

.kn-lab-shell .kn-lft-group,
.kn-lab-shell .kn-lft-bottom-toolbar {
  border: 1px solid var(--kn-border);
  border-radius: var(--kn-radius-md);
  background: var(--kn-bg-panel);
  color: var(--kn-text-main);
  box-shadow: var(--kn-shadow-panel);
}

.kn-lab-shell .kn-lft-group summary,
.kn-lab-shell .kn-lft-group-help,
.kn-lab-shell .kn-lft-controls label {
  color: var(--kn-text-muted);
}

.kn-lab-shell .kn-lft-group-help {
  margin: 0;
  padding: 0.65rem 1rem 0.55rem;
  font-size: 0.76rem;
  line-height: 1.42;
}

.kn-lab-shell .kn-lft-group summary {
  padding: 0.85rem 1rem;
  background: var(--kn-bg-panel-soft);
  color: var(--kn-text-main);
}

.kn-lab-shell .kn-lft-group[open] summary {
  border-bottom: 1px solid var(--kn-border);
}

.kn-lab-shell .kn-lft-group summary::after {
  color: var(--kn-accent);
}

.kn-lab-shell .kn-lft-controls select,
.kn-lab-shell .kn-lft-controls input:not([type="range"]) {
  border: 1px solid var(--kn-border);
  border-radius: var(--kn-radius-sm);
  background: var(--kn-bg-panel-soft);
  color: var(--kn-text-main);
  padding: 0.5rem 0.6rem;
}

.kn-lab-shell .kn-lft-viewer {
  border: 1px solid var(--kn-border);
  border-radius: var(--kn-radius-md);
  box-shadow: var(--kn-shadow-panel);
}

.kn-lab-shell .kn-lft-preset-buttons button,
.kn-lab-shell .kn-lft-export-button,
.kn-lab-shell .kn-lft-reset-button {
  border: 1px solid var(--kn-border);
  background: var(--kn-bg-panel-soft);
  color: var(--kn-text-main);
}

.kn-lab-shell .kn-lft-export-button {
  background: var(--kn-accent);
  color: var(--kn-text-dark);
  border-color: var(--kn-accent);
  font-weight: 700;
}

.kn-lft-tool-wrap .is-locked,
.kn-lft-tool-wrap button.is-locked,
.kn-lft-tool-wrap button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  filter: grayscale(0.65);
}

.kn-lft-tool-wrap .kn-lft-export-button.is-locked,
.kn-lft-tool-wrap .kn-lft-export-button:disabled {
  background: var(--kn-bg-panel-soft);
  color: var(--kn-text-muted);
  border-color: var(--kn-border);
}

.kn-lab-full-badge {
  display: none;
  margin-left: 0.35rem;
  padding: 0.12rem 0.35rem;
  border: 1px solid rgba(215,181,109,0.34);
  border-radius: 999px;
  color: var(--kn-accent);
  font-size: 0.62rem;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.kn-lft-tool-wrap .is-locked .kn-lab-full-badge,
.kn-lft-tool-wrap button:disabled .kn-lab-full-badge {
  display: inline-flex;
}