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

:root {
  --mono: 'Courier New', 'Lucida Console', monospace;
  --bg:       #f0efe8;
  --tint:     #e8ece6;
  --surface:  #fafaf7;
  --surface2: #e4e3da;
  --border:   rgba(0,0,0,0.14);
  --border2:  rgba(0,0,0,0.07);
  --text:     #1a1a16;
  --text2:    #5a5a52;
  --text3:    #9a9a90;
  --accent:   #2a8f5c;
  --hue-thumb: #2a8f5c;
  --r: 0px;
  --rs: 0px;
}
body.app-dark {
  --bg:       #0e0e0c;
  --tint:     #141612;
  --surface:  #141412;
  --surface2: #1e1e1a;
  --border:   rgba(255,255,255,0.1);
  --border2:  rgba(255,255,255,0.05);
  --text:     #e8e8e0;
  --text2:    #a0a098;
  --text3:    #6a6a62;
}

body {
  font-family: var(--mono);
  background: var(--tint);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
  font-size: 1rem;
  line-height: 1.5;
  transition: background 0.4s ease, color 0.4s ease;
}

.app { display:flex; flex-direction:column; height:100vh; }

.topbar {
  display:flex; align-items:center; justify-content:space-between;
  padding: 0 16px; height:40px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink:0; z-index:10;
  transition: background 0.4s ease, border-color 0.4s ease;
}
.logo { font-family:var(--mono); font-size:0.875rem; font-weight:700; letter-spacing:.02em; }
.logo em { color:var(--accent); font-style:normal; }
.logo small { font-size:0.8125rem; color:var(--text3); font-weight:400; margin-left:8px; }

.main { display:flex; flex:1; overflow:hidden; }

.sidebar {
  width:240px; flex-shrink:0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y:auto;
  padding: 0;
  display:flex; flex-direction:column;
  transition: background 0.4s ease, border-color 0.4s ease;
}

.sidebar-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border2);
  transition: border-color 0.4s ease;
}

.content {
  flex:1; overflow-y:auto;
  padding: 16px;
  display:flex; flex-direction:column; gap:16px;
  background: var(--tint);
  transition: background 0.4s ease;
}

.ctrl-group { display:flex; flex-direction:column; gap:6px; }
.ctrl-label {
  font-size:0.75rem; font-weight:700;
  letter-spacing:.12em; text-transform:uppercase;
  color:var(--text3); font-family:var(--mono);
  margin-bottom: 2px;
}

.hue-slider, .full-track {
  -webkit-appearance:none; appearance:none;
  width:100%; height:18px;
  border: 1px solid var(--border);
  cursor:pointer; outline:none;
}
.hue-slider {
  background: linear-gradient(to right,
    #ff4444 0%, #ff9900 10%, #ffee00 20%, #aaff00 30%,
    #00ff88 40%, #00ffff 50%, #0088ff 60%,
    #8800ff 70%, #ff00cc 80%, #ff0055 90%, #ff4444 100%);
}
.full-track { background: var(--surface2); }
.hue-slider::-webkit-slider-thumb {
  -webkit-appearance:none;
  width:16px; height:16px;
  background: #2a8f5c;
  border: 2px solid white;
  box-shadow: 0 0 0 1px rgba(0,0,0,.3);
  cursor:pointer;
}
.full-track::-webkit-slider-thumb {
  -webkit-appearance:none;
  width:14px; height:14px;
  background: var(--surface);
  border: 2px solid white;
  box-shadow: 0 0 0 1px rgba(0,0,0,.3);
  cursor:pointer;
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 0;
}
.slider-label {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--text2);
  width: 20px;
  flex-shrink: 0;
  padding-right: 8px;
  text-align: right;
}
.slider-track-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}
.slider-track-wrap input[type=range] { width: 100%; }
.slider-ext-val {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text2);
  width: 38px;
  flex-shrink: 0;
  text-align: center;
  padding: 2px 4px;
  margin-left: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  outline: none;
  cursor: text;
  transition: border-color 0.1s, color 0.1s;
}
.slider-ext-val:hover { color: var(--text); border-color: var(--text3); }
.slider-ext-val:focus { color: var(--text); border-color: var(--accent); }
.track-val {
  position: absolute;
  right: 6px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text3);
  pointer-events: none;
  letter-spacing: .02em;
}

.row { display:flex; align-items:center; gap:8px; }
.row label { font-size:0.8125rem; color:var(--text2); width:56px; flex-shrink:0; font-family:var(--mono); }
.row input[type=range] {
  -webkit-appearance:none; appearance:none;
  flex:1; height:18px;
  border: 1px solid var(--border);
  cursor:pointer; outline:none; background: var(--surface2);
}
.row input[type=range]::-webkit-slider-thumb {
  -webkit-appearance:none;
  width:14px; height:14px;
  background: var(--surface);
  border: 2px solid white;
  box-shadow: 0 0 0 1px rgba(0,0,0,.3);
  cursor:pointer;
}
.row .val {
  font-family:var(--mono);
  font-size:0.75rem; color:var(--text2);
  width:30px; text-align:right;
}

.swatch {
  width:100%; height:28px;
  border: 1px solid var(--border);
  display:flex; align-items:center; padding:0 8px;
  transition:background .15s;
}
.swatch code { font-family:var(--mono); font-size:0.75rem; opacity:.7; }

.sec-opts { display:flex; flex-direction:column; gap:2px; }
.sec-opt {
  display:flex; align-items:center; gap:8px;
  padding:5px 7px;
  border: 1px solid transparent;
  cursor:pointer;
  transition:all .1s;
}
.sec-opt:hover { background: var(--surface2); }
.sec-opt.on { border-color: var(--accent); background: var(--tint); }
.sec-dot { width:10px; height:10px; flex-shrink:0; }
.sec-info { flex:1; }
.sec-name { font-size:0.8125rem; color:var(--text); font-family:var(--mono); }
.sec-desc { font-size:0.75rem; color:var(--text3); font-family:var(--mono); }
.sec-radio {
  width:8px; height:8px;
  border: 1px solid var(--border); flex-shrink:0;
}
.sec-opt.on .sec-radio { background:var(--accent); border-color:var(--accent); }

.seg { display:flex; border:1px solid var(--border); overflow:hidden; background:var(--surface); }
.seg button {
  flex:1; padding:5px 2px; text-align:center; font-size:0.8125rem;
  color:var(--text2); cursor:pointer; border:none; border-right:1px solid var(--border);
  background:none; font-family:var(--mono); transition:all .1s; letter-spacing:.03em;
}
.seg button:last-child { border-right:none; }
.seg button.on { background:var(--accent); color:white; }

.pills { display:flex; gap:0; border:1px solid var(--border); overflow:hidden; }
.pill {
  background:var(--surface); border:none; border-right:1px solid var(--border);
  padding:4px 10px;
  font-size:10px; color:var(--text2); cursor:pointer;
  font-family:var(--mono); transition:all .1s; letter-spacing:.03em;
}
.pill:last-child { border-right:none; }
.pill:hover { color:var(--text); background:var(--surface2); }
.pill.on { background:var(--text); color:var(--bg); }

.sec-head {
  font-size:0.75rem; font-weight:700;
  letter-spacing:.12em; text-transform:uppercase;
  color:var(--text3); margin-bottom:6px;
  font-family:var(--mono);
}

.strip { display:flex; gap:1px; overflow:hidden; }
.chip {
  flex:1; display:flex; align-items:flex-end; justify-content:center;
  padding-bottom:2px; cursor:pointer;
  transition:flex .1s;
}
.chip:hover { flex:1.6; }
.chip span {
  font-family:var(--mono); font-size:0.625rem; opacity:.45;
}

.sem-grid { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.sem-strip { display:flex; gap:1px; overflow:hidden; }
.sem-chip { flex:1; cursor:pointer; border-radius:0; }

.preview-card { border:1px solid var(--border); overflow:hidden; }
.preview-top {
  display:flex; align-items:center; gap:8px;
  padding:5px 10px; border-bottom:1px solid var(--border);
  background:var(--surface);
}
.preview-top span { font-size:0.6875rem; color:var(--text3); font-family:var(--mono); letter-spacing:.05em; }
.preview-body { overflow:auto; max-height:500px; }

#uiFrame { font-family:var(--mono); }
#uiFrame.mob { max-width:390px; margin:0 auto; border-left:1px solid var(--border); border-right:1px solid var(--border); }

hr { border:none; border-top:1px solid var(--border); }

#oklchModal, #exportModal {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(2px);
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }

#modalBox {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 8px 8px 0 rgba(0,0,0,0.2);
  width: min(680px, 92vw);
  max-height: 82vh;
  display: flex; flex-direction: column;
  transition: background 0.4s ease;
}

#modalHeader {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
#modalTitle {
  font-family: var(--mono); font-size: 0.75rem;
  font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent);
}
#modalClose {
  font-family: var(--mono); font-size: 0.75rem;
  color: var(--text3); background: none; border: none;
  cursor: pointer; letter-spacing: .04em;
  padding: 2px 6px;
}
#modalClose:hover { color: var(--text); }

#modalBody {
  overflow-y: auto;
  padding: 20px 20px 28px;
  display: flex; flex-direction: column; gap: 24px;
}

.m-section { display: flex; flex-direction: column; gap: 8px; }

.m-label {
  font-family: var(--mono); font-size: 0.75rem;
  font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--text3);
  margin-bottom: 2px;
}

.m-text {
  font-family: var(--mono); font-size: 0.8125rem;
  color: var(--text2); line-height: 1.7;
}
.m-text code {
  color: var(--accent); font-family: var(--mono);
}

.m-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 12px; margin-top: 4px;
}
.m-axis {
  border: 1px solid var(--border);
  padding: 12px; display: flex; flex-direction: column; gap: 6px;
}
.m-axis-head {
  font-family: var(--mono); font-size: 0.8125rem;
  font-weight: 700; color: var(--accent);
}

.modal-tab-bar {
  display: flex;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-tab {
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 8px 12px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text3);
  cursor: pointer;
  letter-spacing: .03em;
  margin-bottom: -1px;
  transition: color .1s, border-color .1s;
}
.modal-tab:hover { color: var(--text2); }
.modal-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.modal-panel { display: none; flex-direction: column; gap: 24px; }
.modal-panel.active { display: flex; }

.export-opt {
  width: 100%;
  text-align: left;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 12px 14px;
  cursor: pointer;
  font-family: var(--mono);
  transition: all .1s;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.export-opt:hover { background: var(--tint); border-color: var(--accent); }
.export-opt-multi { cursor: default; }
.export-opt-multi:hover { background: var(--surface2); border-color: var(--border); }
.export-opt-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}
.export-opt-actions button {
  font-family: var(--mono);
  font-size: 0.75rem;
  padding: 4px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text2);
  cursor: pointer;
  letter-spacing: .03em;
  transition: all .1s;
}
.export-opt-actions button:hover { background: var(--tint); border-color: var(--accent); color: var(--accent); }
.export-opt-head {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text);
  font-family: var(--mono);
}
.export-opt-desc {
  font-size: 0.75rem;
  color: var(--text2);
  font-family: var(--mono);
  line-height: 1.6;
}
.export-opt-desc code {
  color: var(--accent);
  font-family: var(--mono);
}
.seg-btn-solo {
  font-family: var(--mono);
  font-size: 0.8125rem;
  padding: 5px 12px;
  color: var(--text2);
  background: var(--surface2);
  border: 1px solid var(--border);
  cursor: pointer;
  letter-spacing: .03em;
  transition: all .1s;
}
.seg-btn-solo:hover { color: var(--text); background: var(--surface); }

.dl-btn {
  font-family: var(--mono);
  font-size: 0.8125rem;
  padding: 5px 12px;
  background: var(--text);
  color: var(--bg);
  border: none;
  cursor: pointer;
  letter-spacing: .04em;
}
.dl-btn:hover { opacity: .85; }

.dl-menu {
  display: none;
  position: absolute;
  right: 0; top: calc(100% + 4px);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: 4px 4px 0 rgba(0,0,0,.12);
  z-index: 100;
  min-width: 200px;
  flex-direction: column;
}
.dl-menu.open { display: flex; }
.dl-menu button {
  font-family: var(--mono);
  font-size: 0.8125rem;
  padding: 8px 14px;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border2);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  letter-spacing: .02em;
}
.dl-menu button:last-child { border-bottom: none; }
.dl-menu button:hover { background: var(--surface2); }

#colorTip {
  position: fixed; z-index: 999;
  pointer-events: none; opacity: 0;
  transition: opacity .1s;
  background: var(--text);
  color: var(--bg);
  padding: 10px 12px;
  min-width: 160px;
  box-shadow: 4px 4px 0 rgba(0,0,0,.15);
  font-family: var(--mono);
  font-size: 0.8125rem; line-height: 1.6;
  border: 1px solid var(--border);
}
#colorTip.show { opacity: 1; }
#colorTip .tip-swatch {
  width: 100%; height: 24px;
  margin-bottom: 8px;
  border: 1px solid rgba(255,255,255,.15);
}
#colorTip .tip-label {
  font-size: 0.75rem; letter-spacing: .1em;
  text-transform: uppercase; opacity: .5; margin-bottom: 4px;
}
#colorTip .tip-row { font-size: 0.8125rem; opacity: .85; }
#colorTip .tip-hex-row {
  display: flex; align-items: center;
  justify-content: space-between; margin-top: 6px;
  padding-top: 6px; border-top: 1px solid rgba(255,255,255,.15);
}
#colorTip .tip-hex { font-size: 0.9375rem; font-weight: 700; }
#colorTip .tip-hint { font-size: 0.75rem; opacity: .45; }
#colorTip.copied-flash .tip-hint { opacity: 1; color: #7effc0; }

.chip { cursor: pointer !important; }
.sem-chip { cursor: pointer; }

.hex-anchor-badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.6875rem; color: var(--text3); font-family: var(--mono);
  margin-top: 2px; letter-spacing: .02em;
}
.hex-anchor-dot {
  width: 6px; height: 6px;
  border: 1px solid var(--text3); flex-shrink: 0;
}
.hex-anchor-dot.exact { background: var(--accent); border-color: var(--accent); }