:root {
  --bg: #0d0d0d;
  --panel: #121212;
  --panel-2: #181818;
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.3);
  --text: #f3efe7;
  --muted: rgba(243, 239, 231, 0.62);
  --accent: #d25f32;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: #070707;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

body {
  min-height: 100vh;
  overflow: hidden;
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: 360px 1fr;
  height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0)),
    var(--panel);
  padding: 18px;
  overflow-y: auto;
  min-height: 0;
}

.brandbar,
.panel,
.workspace__topbar,
.canvas-frame {
  border: 1px solid var(--line);
  border-radius: 0;
}

.brandbar {
  padding: 14px;
  margin-bottom: 16px;
  background: var(--panel-2);
}

.brandbar__title {
  font-size: 22px;
  letter-spacing: 0;
  font-weight: 700;
}

.brandbar__meta {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.panel {
  padding: 14px;
  margin-bottom: 16px;
  background: rgba(255, 255, 255, 0.02);
}

.panel__title {
  margin-bottom: 12px;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.preset-grid,
.toggle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.stack-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.stack-actions--small {
  margin-top: 12px;
  margin-bottom: 0;
}

.preset-btn,
.action-btn {
  border: 1px solid var(--line-strong);
  background: #141414;
  color: var(--text);
  min-height: 40px;
  cursor: pointer;
}

.preset-btn:hover,
.action-btn:hover {
  background: #1d1d1d;
}

.preset-btn.active,
.action-btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: rgba(255,255,255,0.24);
}

.preset-btn.active:hover,
.action-btn--primary:hover {
  background: var(--accent);
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.field span {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
}

.field input[type="text"] {
  width: 100%;
  background: #101010;
  border: 1px solid var(--line);
  color: var(--text);
  min-height: 40px;
  padding: 0 10px;
  border-radius: 0;
}

.field select,
.field textarea,
.field input[type="number"],
.field input[type="color"] {
  width: 100%;
  background: #101010;
  border: 1px solid var(--line);
  color: var(--text);
  min-height: 40px;
  padding: 8px 10px;
  border-radius: 0;
}

.field textarea {
  resize: vertical;
  min-height: 78px;
}

.field--range {
  margin-bottom: 10px;
}

.field input[type="range"] {
  width: 100%;
}

.upload-box {
  display: grid;
  place-items: center;
  min-height: 96px;
  border: 1px dashed var(--line-strong);
  background: #101010;
  cursor: pointer;
  text-align: center;
  margin-bottom: 12px;
}

.upload-box input {
  display: none;
}

.hidden-file-input {
  display: none;
}

.inline-toggle,
.toggle-grid {
  font-size: 13px;
  color: var(--muted);
}

.analyze-stats {
  min-height: 40px;
  border: 1px solid var(--line);
  padding: 10px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(255,255,255,0.02);
}

.inline-toggle {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.toggle-grid label,
.inline-toggle label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.detected-colors {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.color-chip {
  min-height: 40px;
  border: 1px solid var(--line);
  background: #111;
  cursor: pointer;
}

.color-chip.active {
  outline: 2px solid rgba(255,255,255,0.7);
  outline-offset: 0;
}

.panel--actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.workspace {
  position: sticky;
  top: 0;
  padding: 18px;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    #090909;
  background-size: 32px 32px;
  align-self: start;
  height: 100vh;
  overflow: hidden;
}

.workspace__topbar {
  min-height: 52px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: 13px;
}

.canvas-frame {
  position: relative;
  height: calc(100vh - 88px);
  min-height: 0;
  display: grid;
  place-items: center;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0)),
    #111;
  overflow: hidden;
}

canvas {
  width: min(100%, calc((100vh - 152px) * 1080 / 1350), 860px);
  max-height: calc(100vh - 152px);
  height: auto;
  aspect-ratio: 1080 / 1350;
  border: 1px solid rgba(255,255,255,0.08);
  image-rendering: auto;
  cursor: crosshair;
}

@media (max-width: 1080px) {
  body {
    overflow: auto;
  }

  .app-shell {
    grid-template-columns: 1fr;
    height: auto;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    min-height: auto;
  }

  .workspace {
    position: static;
    height: auto;
    overflow: visible;
  }

  .canvas-frame {
    height: auto;
    min-height: 0;
    padding: 18px 0;
  }
}