:root {
  color-scheme: dark;
  --bg: #101114;
  --panel: #191b20;
  --panel-2: #20232a;
  --line: #353a44;
  --text: #eff2f6;
  --muted: #9da7b5;
  --accent: #39b980;
  --accent-2: #f1c40f;
  --danger: #e05f5f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
}

button,
input,
select {
  font: inherit;
}

.app {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  min-height: calc(100vh - 38px);
}

.panel {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: calc(100vh - 38px);
  overflow: hidden;
}

.brand h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.brand p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 13px;
}

.tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.tab-button {
  min-height: 34px;
  padding: 6px 8px;
  font-size: 13px;
}

.tab-button.active {
  color: #07110c;
  background: var(--accent);
  border-color: var(--accent);
}

.tab-panel {
  display: none;
  min-height: 0;
  overflow: auto;
}

.tab-panel.active {
  display: grid;
  gap: 10px;
}

.compact-card {
  margin: 0;
}

.control-group {
  display: grid;
  gap: 8px;
}

label {
  color: var(--muted);
  font-size: 13px;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

input[type="file"],
select,
button {
  width: 100%;
  min-height: 38px;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
}

button {
  cursor: pointer;
}

button:hover,
select:hover {
  border-color: var(--accent);
}

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

.profile-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.profile-card h2,
.editor-card h2 {
  margin: 0 0 12px;
  font-size: 15px;
}

.editor-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.editor-head h2 {
  margin: 0;
}

.editor-actions {
  display: flex;
  gap: 6px;
}

.editor-actions button {
  width: auto;
  min-width: 66px;
  min-height: 32px;
  padding: 5px 9px;
}

.curve-canvas-wrap {
  position: relative;
}

#curveCanvas {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: crosshair;
  touch-action: none;
}

#curveCanvas.dragging-curve {
  cursor: grabbing;
}

.curve-point-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.curve-point-handle {
  position: absolute;
  width: 18px;
  height: 18px;
  min-width: 18px;
  min-height: 18px;
  padding: 0;
  border: 2px solid rgba(15, 17, 21, 0.9);
  border-radius: 50%;
  background: #f1c40f;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.28);
  cursor: grab;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.curve-point-handle:active {
  cursor: grabbing;
}

.curve-controls {
  display: grid;
  gap: 8px;
  max-height: calc(100vh - 478px);
  min-height: 210px;
  overflow: auto;
  padding-right: 4px;
}

.curve-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 42px;
  align-items: center;
  gap: 8px;
}

.curve-row label,
.curve-row output {
  color: var(--muted);
  font-size: 12px;
}

.curve-row output {
  text-align: right;
}

dl {
  display: grid;
  gap: 8px;
  margin: 0;
}

dl div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
  text-align: right;
}

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

.toolbar {
  min-height: 58px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
}

.toolbar span {
  color: var(--muted);
  margin-left: 8px;
}

.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toolbar-actions select {
  width: auto;
  min-width: 118px;
}

.toolbar button {
  width: auto;
  min-width: 150px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.drop-zone {
  min-height: 0;
  padding: 18px;
  overflow: auto;
}

.drop-zone.dragging {
  outline: 2px solid var(--accent);
  outline-offset: -8px;
}

.viewer {
  position: relative;
  width: 100%;
  min-height: calc(100vh - 132px);
}

.split-view {
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(45deg, #17191e 25%, transparent 25%),
    linear-gradient(-45deg, #17191e 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #17191e 75%),
    linear-gradient(-45deg, transparent 75%, #17191e 75%);
  background-size: 26px 26px;
  background-position: 0 0, 0 13px, 13px -13px, -13px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: ew-resize;
  user-select: none;
  touch-action: none;
}

canvas {
  max-width: 100%;
  max-height: calc(100vh - 168px);
  object-fit: contain;
  image-rendering: auto;
}

.split-view canvas {
  grid-area: 1 / 1;
}

#appliedCanvas {
  clip-path: inset(0 0 0 50%);
}

.split-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 0;
  min-height: 100%;
  padding: 0;
  border: 0;
  background: var(--accent-2);
  cursor: ew-resize;
  transform: translateX(-1px);
}

.split-line::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--accent-2);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35);
}

.split-line::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 1px;
  width: 34px;
  height: 46px;
  border: 1px solid rgba(0, 0, 0, 0.45);
  border-radius: 18px;
  background: var(--accent-2);
  transform: translate(-50%, -50%);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.dragging-split .split-line::after,
.split-line:focus-visible::after {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.label {
  position: absolute;
  top: 14px;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.62);
  color: var(--text);
  font-size: 13px;
}

.label.original {
  left: 14px;
}

.label.profiled {
  right: 14px;
}

.side-view {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

figure {
  margin: 0;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
}

figcaption {
  color: var(--muted);
}

figure canvas {
  width: 100%;
  align-self: start;
}

.empty-state {
  min-height: calc(100vh - 132px);
  display: grid;
  place-items: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 8px;
}

.site-bar {
  min-height: 38px;
  border-top: 1px solid var(--line);
  background: #15171b;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 7px 16px;
  font-size: 12px;
  line-height: 1.2;
}

.site-bar span,
.site-bar a {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-bar span:first-child {
  color: var(--text);
  font-weight: 600;
}

.site-bar a {
  color: var(--accent);
  text-decoration: none;
}

.site-bar a.visitor-counter {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.site-bar a.visitor-counter img {
  display: block;
  height: 20px;
}

.site-bar a:hover {
  text-decoration: underline;
}

.hidden {
  display: none;
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
  }

  .panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .side-view {
    grid-template-columns: 1fr;
  }

  .toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar button {
    width: 100%;
  }

  .toolbar-actions {
    width: 100%;
  }

  .toolbar-actions select {
    min-width: 110px;
  }

  .toolbar-actions button {
    min-width: 0;
  }

  .site-bar {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .site-bar span,
  .site-bar a {
    white-space: normal;
  }
}