:root {
  --bg: #fcfbfa;
  --surface: #fff;
  --surface2: #e8f0fb;
  --ink: #1a1714;
  --ink2: #353535;
  --ink3: #353535;
  --accent: #c8502a;
  --accent2: #4a7fa5;
  --accent-light: #f0e8e3;
  --border: var(--bs-border-color);
  --radius: 12px;
  --shadow: 0 2px 16px rgba(26,23,20,0.08), 0 1px 3px rgba(26,23,20,0.06);
}

.layout {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.cubic-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card-title {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 14px;
  font-weight: 500;
}

.canvas-outer {
  display: flex;
  justify-content: center;
}

.canvas-wrap {
  position: relative;
  display: inline-block;
  overflow: visible;
  line-height: 0;
}

#bezierCanvas {
  display: block;
  border-radius: 8px;
  touch-action: none;
  user-select: none;
}

.curve-handle {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: grab;
  touch-action: none;
  z-index: 10;
  box-shadow: 0 0 0 3px white, 0 2px 6px rgba(0,0,0,0.25);
  transition: box-shadow 0.15s;
}

.curve-handle:active {
  cursor: grabbing;
  box-shadow: 0 0 0 4px white, 0 3px 10px rgba(0,0,0,0.3);
}

.handle-p1 {
  background: #d20423;
}

.handle-p2 {
  background: #1840dc;
}

.legend {
  display: flex;
  gap: 14px;
  margin-top: 10px;
  font-size: 0.62rem;
  color: var(--ink3);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 4px;
  vertical-align: middle;
}

.p1-dot {
  background: #d20423;
}

.p2-dot {
  background: #1840dc;
}

.coords {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}

.coord-group label {
  display: block;
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink3);
  margin-bottom: 4px;
}

.coord-row {
  display: flex;
  gap: 6px;
}

.coord-row input {
  width: 100%;
  padding: 6px 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}

.coord-row input:focus {
  border-color: var(--accent2);
}

.css-output {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}

.css-output code {
  flex: 1;
  font-family: 'DM Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  word-break: break-all;
}

.icon-btn {
  flex-shrink: 0;
  border: none;
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 0.65rem;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: opacity 0.2s;
}

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

.icon-btn.secondary {
  background: #3653e2;
  color: white;
  border: 1px solid var(--border);
}

.icon-btn:hover {
  opacity: 0.8;
}

.action-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.action-row .icon-btn {
  flex: 1;
  padding: 8px 6px;
  font-size: 0.85em;
}

.cubic-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.duration-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.duration-row input[type=range] {
  flex: 1;
  -webkit-appearance: none;
  height: 3px;
  background: var(--surface2);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.duration-row input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent2);
  cursor: pointer;
}

.duration-val {
  font-size: 0.75rem;
  color: var(--ink2);
  min-width: 40px;
  text-align: right;
}

.mode-tabs {
  display: flex;
  gap: 4px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
}

.mode-tab {
  flex: 1;
  padding: 5px 0;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink3);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.mode-tab.active {
  background: var(--surface);
  color: var(--accent2);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.preview-row-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0 5px;
}

.row-tag {
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 500;
  flex-shrink: 0;
}

.compare-tag, .custom-tag {
  background: #e8f0f7;
  color: var(--accent2);
}

.row-easing {
  font-size: 0.7rem;
  color: var(--ink3);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-area {
  height: 62px;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.preview-object {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--accent);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  left: 14px;
}

.preview-object.compare-obj {
  background: var(--accent2);
}

.preview-btn {
  width: 100%;
  margin-top: 10px;
  padding: 9px;
  background: var(--ink);
  color: var(--bg);
  border: none;
  border-radius: 8px;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.2s;
}

.preview-btn:hover {
  opacity: 0.8;
}

.compare-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.compare-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface2);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.compare-item:hover {
  border-color: var(--accent2);
  background: #f0f5fa;
}

.compare-item.active {
  border-width: 2px;
  border-color: var(--accent2);
  background: #e8f0f7;
}

.compare-mini {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.compare-info {
  flex: 1;
}

.compare-name {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ink);
  display: block;
}

.compare-val {
  font-size: 0.6rem;
  color: var(--ink3);
  margin-top: 1px;
  display: block;
}

.presets-section {
  max-width: 1100px;
  margin: 20px auto 0;
}

.preset-group-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink3);
  font-weight: 500;
  margin: 22px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.preset-group-label:first-child {
  margin-top: 0;
}

.preset-group-count {
  background: var(--surface2);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 0.65rem;
  color: var(--ink);
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 10px;
}

.preset-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 8px 8px;
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
  box-shadow: 0 1px 4px rgba(26,23,20,0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  position: relative;
}

.preset-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.preset-card.custom-preset:hover {
  border-color: var(--accent);
}

.preset-card-name {
  font-size: 0.59rem;
  color: var(--ink2);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  text-align: center;
  line-height: 1.3;
}

.preset-delete {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ff4c4d;
  border: none;
  cursor: pointer;
  font-size: 8px;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.15s;
}

.preset-card canvas, .compare-mini, .modal-preview canvas {
  border: 1px solid var(--border);
  border-radius: 5px;
}

.preset-card:hover .preset-delete {
  opacity: 1;
}

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(26,23,20,0.45);
  z-index: 100;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
}

.modal-backdrop.open {
  display: flex;
}

.cubic-modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  width: min(340px, 90vw);
  box-shadow: 0 12px 40px rgba(0,0,0,0.18);
  animation: modalIn 0.2s cubic-bezier(0.34,1.56,0.64,1);
}

@keyframes modalIn {
  from {
    transform: scale(0.92);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.cubic-modal h3 {
  font-family: 'Fraunces', serif;
  font-weight: 300;
  font-size: 1.2rem;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.cubic-modal label {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink3);
  display: block;
  margin-bottom: 6px;
}

.cubic-modal input[type=text] {
  width: 100%;
  padding: 9px 12px;
  background: var(--surface2);
  border: 1px solid var(--accent2);
  border-radius: 8px;
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
  margin-bottom: 16px;
}

.cubic-modal input[type=text]:focus {
  border-color: var(--accent2);
}

.modal-preview {
  background: var(--surface2);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
}

.modal-curve-val {
  font-size: 0.63rem;
  color: var(--ink3);
  line-height: 1.5;
}

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

.modal-actions .icon-btn {
  flex: 1;
  padding: 9px 8px;
  font-size: 0.68rem;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: var(--ink);
  color: var(--bg);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 10px 20px;
  border-radius: 8px;
  z-index: 200;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s;
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}