:root{
  --bg: #0b101a;
  --panel: #111827;
  --panel-2: #151f32;
  --panel-3: #1b2740;
  --text: #eef2ff;
  --muted: #9fb0ca;
  --line: #24324a;
  --accent: #73b2ff;
  --accent-ink: #0b101a;
  --accent-soft: rgba(115,178,255,.16);
  --accent-border: rgba(115,178,255,.42);
  --viewer-bg: #05080f;
  --chrome: rgba(8,12,20,.76);
  --chart-grid: rgba(255,255,255,.07);
  --chart-axis: rgba(255,255,255,.2);
  --chart-muted-bar: #364055;
  --danger: #ff8a7a;
  --shadow: 0 18px 44px rgba(5,10,20,.5);
  --radius: 16px;
}

body[data-theme="light"]{
  --bg: #f4f6fb;
  --panel: #ffffff;
  --panel-2: #eef2f8;
  --panel-3: #e3e9f3;
  --text: #1b2333;
  --muted: #51607a;
  --line: #d6deeb;
  --accent: #3f6ff5;
  --accent-ink: #ffffff;
  --accent-soft: rgba(63,111,245,.12);
  --accent-border: rgba(63,111,245,.38);
  --viewer-bg: #dde3ec;
  --chrome: rgba(255,255,255,.86);
  --chart-grid: rgba(20,30,50,.08);
  --chart-axis: rgba(20,30,50,.25);
  --chart-muted-bar: #c9d0dc;
  --danger: #c2412d;
  --shadow: 0 10px 28px rgba(18,25,38,.12);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  height:100vh;
  height:100dvh;
  display:flex;
  flex-direction:column;
  overflow:hidden;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size:13px;
  color:var(--text);
  background:
    radial-gradient(1100px 520px at 12% -12%, rgba(115,178,255,.16), transparent 55%),
    radial-gradient(900px 560px at 96% 8%, rgba(77,211,167,.1), transparent 60%),
    var(--bg);
}
body[data-theme="light"]{
  background:
    radial-gradient(1100px 520px at 10% -12%, rgba(63,111,245,.1), transparent 55%),
    radial-gradient(900px 560px at 96% 8%, rgba(77,211,167,.12), transparent 60%),
    var(--bg);
}

/* The shared header, a little tighter so the tool gets the height. */
.site-header--demo{ margin-bottom:0; flex:none; }
.site-header--demo .site-header__inner{ padding-top:.55rem; padding-bottom:.55rem; }

h1,h2,h3,p{ margin:0; }
button,select,input{ font:inherit; color:inherit; }
output{ font-variant-numeric: tabular-nums; }

.hint,
.helper{
  font-size:11.5px;
  color:var(--muted);
  line-height:1.4;
}

/* ── App frame ─────────────────────────────────────────────────────────── */
.app{
  flex:1;
  min-height:0;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:10px 14px 12px;
}

.app-bar{
  flex:none;
  display:flex;
  align-items:center;
  gap:16px;
  min-width:0;
}
.app-bar__title{ min-width:0; flex:0 1 auto; }
.app-bar__title h1{ font-size:18px; line-height:1.2; letter-spacing:.01em; }
.app-bar__title p{
  font-size:12px;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.app-bar__stats{
  display:flex;
  gap:6px;
  margin:0 0 0 auto;
  min-width:0;
}
.stat{
  padding:4px 10px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--panel);
  min-width:0;
}
.stat dt{
  font-size:9.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--muted);
}
.stat dd{
  margin:0;
  font-weight:600;
  font-size:12.5px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  max-width:170px;
}
.app-bar__actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}

/* ── Buttons & controls ────────────────────────────────────────────────── */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  border-radius:999px;
  border:1px solid var(--accent-border);
  background:transparent;
  padding:6px 13px;
  font-size:12px;
  line-height:1.2;
  cursor:pointer;
  transition: background .15s ease, border-color .15s ease, opacity .15s ease;
  white-space:nowrap;
}
.btn:hover{ background:var(--accent-soft); }
.btn:disabled{ opacity:.5; cursor:not-allowed; }
.btn:disabled:hover{ background:transparent; }
.btn--primary,
.btn--accent{
  background:var(--accent);
  border-color:transparent;
  color:var(--accent-ink);
  font-weight:600;
}
.btn--primary:hover,
.btn--accent:hover{ background:var(--accent); filter:brightness(1.08); }
.btn--primary:disabled:hover{ background:var(--accent); filter:none; }
.btn--ghost{ border-color:var(--line); }
.btn--small{ padding:3px 10px; font-size:11.5px; }
.btn--icon{ width:30px; height:30px; padding:0; font-size:16px; flex:none; }
.btn--file{ position:relative; overflow:hidden; flex:1; }
.btn--file input{
  position:absolute;
  inset:0;
  opacity:0;
  cursor:pointer;
  font-size:0;
}
.btn--file:has(input:focus-visible){ outline:2px solid var(--accent); outline-offset:2px; }

:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }

.switch{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:12px;
  cursor:pointer;
  white-space:nowrap;
}
.switch input{ width:15px; height:15px; margin:0; accent-color:var(--accent); }

.control{
  display:flex;
  flex-direction:column;
  gap:3px;
  min-width:0;
}
.control__label{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:8px;
  font-size:12px;
}
.control__label output{ color:var(--muted); }
.control__label > span{ display:inline-flex; align-items:baseline; gap:2px; color:var(--muted); }
.control select{
  width:100%;
  min-width:0;
  padding:5px 8px;
  border-radius:9px;
  border:1px solid var(--line);
  background:var(--panel);
}
.control--inline{
  display:grid;
  grid-template-columns:78px minmax(0, 1fr);
  align-items:center;
  gap:8px;
}
.control input[type="range"]{
  width:100%;
  margin:0;
  accent-color:var(--accent);
}
.control-reset{
  border:none;
  background:none;
  padding:0 0 0 8px;
  color:var(--accent);
  font-size:11px;
  cursor:pointer;
}

.row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
}
.row .switch{ margin-right:auto; }
.row--split{ display:grid; grid-template-columns:1fr 1fr; }

/* ── Workspace ─────────────────────────────────────────────────────────── */
.workspace{
  flex:1;
  min-height:0;
  display:grid;
  grid-template-columns:clamp(256px, 20vw, 350px) minmax(0, 1fr) clamp(224px, 21vw, 430px);
  gap:12px;
}

.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  min-width:0;
}

/* Sidebar: tabs over a panel that fits without scrolling at laptop sizes
   (it only scrolls on unusually short windows). */
.sidebar{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:10px;
  min-height:0;
}
.tabs{
  flex:none;
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:3px;
  padding:3px;
  border-radius:11px;
  background:var(--panel-2);
}
.tab{
  border:none;
  border-radius:8px;
  background:transparent;
  padding:6px 4px;
  font-size:12px;
  color:var(--muted);
  cursor:pointer;
}
.tab:hover{ color:var(--text); }
.tab[aria-selected="true"]{
  background:var(--panel);
  color:var(--text);
  font-weight:600;
  box-shadow:0 1px 3px rgba(0,0,0,.25);
}
.tab-panel{
  flex:1;
  min-height:0;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.tab-panel[hidden]{ display:none; }

.group{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:9px 10px 10px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--panel-2);
}
.group__title{
  font-size:10px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}

/* Example library */
.library{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:8px 7px;
}
.tile{
  display:flex;
  flex-direction:column;
  gap:3px;
  padding:0;
  border:none;
  background:none;
  text-align:left;
  cursor:pointer;
  min-width:0;
}
.tile img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:16 / 10;
  object-fit:cover;
  border-radius:8px;
  border:2px solid transparent;
  background:var(--panel-3);
  transition:border-color .15s ease, transform .15s ease;
}
.tile:hover img{ border-color:var(--accent-border); }
.tile[aria-current="true"] img{ border-color:var(--accent); }
.tile span{
  font-size:11px;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.tile[aria-current="true"] span{ color:var(--text); font-weight:600; }

.story{
  display:flex;
  flex-direction:column;
  gap:3px;
  padding:9px 11px 10px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--panel-2);
}
.story__tag{
  font-size:10px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.story__title{ font-size:14px; }
.story__text{
  font-size:12px;
  line-height:1.45;
  color:var(--muted);
  display:-webkit-box;
  -webkit-line-clamp:6;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.story__try{ align-self:flex-start; margin-top:5px; white-space:normal; text-align:left; }

.own-images{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.own-images__row{ display:flex; gap:6px; }
.file-switcher{
  display:flex;
  align-items:center;
  gap:6px;
}
.file-switcher[hidden]{ display:none; }
.file-switcher select{
  flex:1;
  min-width:0;
  padding:5px 8px;
  border-radius:9px;
  border:1px solid var(--line);
  background:var(--panel-2);
}

/* ── Stage: viewer over histogram ──────────────────────────────────────── */
.stage{
  display:flex;
  flex-direction:column;
  gap:12px;
  min-height:0;
  min-width:0;
}
.viewer-card{
  flex:1 1 auto;
  min-height:0;
  overflow:hidden;
  position:relative;
}
.viewer{
  position:absolute;
  inset:0;
  background:var(--viewer-bg);
  cursor:crosshair;
  touch-action:manipulation;
}
.viewer__canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
}
.viewer__canvas--base{ transition:filter .2s ease; }
.viewer.has-selection .viewer__canvas--base{ filter:brightness(.55) saturate(.4); }
body[data-theme="light"] .viewer.has-selection .viewer__canvas--base{ filter:brightness(1.12) saturate(.3) opacity(.75); }
/* "Original image underlay" means the photo at full strength: no dimming. */
.viewer.show-original .viewer__canvas--base,
body[data-theme="light"] .viewer.show-original .viewer__canvas--base{ filter:none; }
.viewer__label{
  position:absolute;
  top:10px;
  left:10px;
  display:flex;
  align-items:baseline;
  gap:8px;
  max-width:calc(100% - 20px);
  padding:5px 11px;
  border-radius:999px;
  background:var(--chrome);
  border:1px solid var(--line);
  pointer-events:none;
  backdrop-filter:blur(6px);
}
.viewer__title{ font-weight:600; font-size:12px; white-space:nowrap; }
.viewer__hint{
  font-size:11.5px;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.probe{
  position:absolute;
  display:flex;
  align-items:center;
  gap:7px;
  padding:4px 9px;
  border-radius:8px;
  background:var(--chrome);
  border:1px solid var(--line);
  font-size:12px;
  pointer-events:none;
  transform:translate(14px, -50%);
  white-space:nowrap;
  backdrop-filter:blur(6px);
}
.probe[hidden]{ display:none; }
.probe__key{ width:14px; height:3px; border-radius:2px; }
.probe__value{ font-weight:600; font-variant-numeric:tabular-nums; }
.viewer__drop{
  position:absolute;
  inset:10px;
  display:grid;
  place-items:center;
  border-radius:12px;
  border:2px dashed var(--accent);
  background:rgba(8,14,26,.72);
  color:#fff;
  font-size:15px;
  font-weight:600;
  pointer-events:none;
}
.viewer__drop[hidden],
.viewer__message[hidden]{ display:none; }
.viewer__toggle{
  position:absolute;
  left:10px;
  bottom:10px;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 11px 5px 9px;
  border-radius:999px;
  background:var(--chrome);
  border:1px solid var(--line);
  font-size:12px;
  cursor:pointer;
  user-select:none;
  backdrop-filter:blur(6px);
}
.viewer__toggle:hover{ border-color:var(--accent-border); }
.viewer__toggle input{ width:14px; height:14px; margin:0; accent-color:var(--accent); cursor:pointer; }
.viewer__toggle:has(input:focus-visible){ outline:2px solid var(--accent); outline-offset:2px; }
.viewer__toggle input:focus-visible{ outline:none; }
.viewer__message{
  position:absolute;
  left:50%;
  bottom:52px;
  transform:translateX(-50%);
  padding:6px 12px;
  border-radius:999px;
  background:var(--chrome);
  border:1px solid var(--danger);
  color:var(--text);
  font-size:12px;
}

.histogram-card{
  flex:none;
  height:clamp(168px, 27vh, 250px);
  display:flex;
  flex-direction:column;
  padding:8px 12px 6px;
}
.histogram-head{
  flex:none;
  display:flex;
  align-items:center;
  gap:10px;
  min-height:26px;
  min-width:0;
}
.histogram-head h2{ font-size:13px; white-space:nowrap; flex:none; }
.histogram-head .hint{
  flex:1;
  min-width:0;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.selection{
  display:flex;
  align-items:center;
  gap:6px;
  flex:0 1 auto;
  min-width:0;
  margin-left:auto;
  font-size:12px;
}
.selection[hidden]{ display:none; }
/* With a selection showing, its readout takes the hint's place; long
   multi-range labels truncate before the buttons ever do. */
.histogram-head:has(.selection:not([hidden])) .hint{ display:none; }
.selection__text{
  min-width:0;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  font-variant-numeric:tabular-nums;
}
.selection .btn{ flex:none; }
.selection__text b{ font-weight:600; }
.chart{
  flex:1;
  min-height:0;
  position:relative;
}
.chart canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  display:block;
  touch-action:none;
  border-radius:8px;
}
.chart-tooltip{
  position:absolute;
  pointer-events:none;
  padding:6px 9px;
  border-radius:9px;
  background:var(--panel-2);
  border:1px solid var(--line);
  box-shadow:0 6px 18px rgba(0,0,0,.25);
  font-size:12px;
  white-space:nowrap;
  opacity:0;
  transform:translate(-50%, calc(-100% - 10px));
  transition:opacity .12s ease;
}
.chart-tooltip.is-visible{ opacity:1; }
.chart-tooltip strong{ font-size:13px; font-variant-numeric:tabular-nums; }
.chart-tooltip .tip-row{ display:flex; align-items:center; gap:6px; }
.chart-tooltip .tip-key{ width:12px; height:3px; border-radius:2px; }
.chart-tooltip .tip-sub{ color:var(--muted); font-size:11px; }

/* ── Insights column ───────────────────────────────────────────────────── */
.insights{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:12px;
  min-height:0;
  overflow-y:auto;
}
.insights h2{ font-size:13px; }
.insights__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:8px;
}
.rose{
  flex:1 1 auto;
  min-height:150px;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.rose__wrap{
  flex:1;
  min-height:0;
  position:relative;
}
.rose__wrap canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  display:block;
  cursor:crosshair;
  touch-action:none;
  border-radius:8px;
}
.metrics{
  flex:none;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:7px;
  margin:0;
}
.metric{
  padding:7px 10px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--panel-2);
  min-width:0;
}
.metric dt{ font-size:11px; color:var(--muted); }
.metric dd{ margin:2px 0 0; font-size:16px; font-weight:600; }

.peaks{ flex:none; display:flex; flex-direction:column; gap:6px; }
.peak-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.peak{
  width:100%;
  display:grid;
  grid-template-columns:14px 52px minmax(0,1fr) 40px;
  align-items:center;
  gap:8px;
  padding:5px 8px;
  border-radius:9px;
  border:1px solid transparent;
  background:var(--panel-2);
  cursor:pointer;
  text-align:left;
  font-size:12px;
}
.peak:hover{ border-color:var(--accent-border); }
.peak[aria-pressed="true"]{ border-color:var(--accent); background:var(--accent-soft); }
.peak__key{
  width:14px;
  height:14px;
  border-radius:4px;
  display:grid;
  place-items:center;
  font-size:10px;
  font-weight:700;
  line-height:1;
  color:#0b101a;
}
.peak[aria-pressed="true"] .peak__key::after{ content:"✓"; }
.peak__angle{ font-weight:600; font-variant-numeric:tabular-nums; }
.peak__bar{
  height:4px;
  border-radius:2px;
  background:var(--line);
  overflow:hidden;
}
.peak__bar i{ display:block; height:100%; border-radius:2px; background:var(--muted); }
.peak__share{ text-align:right; color:var(--muted); font-variant-numeric:tabular-nums; }
.peak-empty{ font-size:12px; color:var(--muted); padding:4px 2px; }

/* ── Export menu ───────────────────────────────────────────────────────── */
.menu{ position:relative; }
.menu__list{
  position:absolute;
  right:0;
  top:calc(100% + 6px);
  z-index:20;
  min-width:190px;
  display:flex;
  flex-direction:column;
  padding:5px;
  border-radius:12px;
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.menu__list[hidden]{ display:none; }
.menu__item{
  border:none;
  background:none;
  padding:7px 10px;
  border-radius:8px;
  text-align:left;
  font-size:12.5px;
  cursor:pointer;
}
.menu__item:hover,
.menu__item:focus-visible{ background:var(--accent-soft); outline:none; }

/* ── Smaller laptops ───────────────────────────────────────────────────── */
@media (max-width: 1280px){
  .app-bar__title p{ display:none; }
  .stat dd{ max-width:130px; }
}
@media (max-width: 1100px){
  .workspace{ grid-template-columns:250px minmax(0,1fr) 220px; gap:10px; }
  .stat:nth-child(4){ display:none; }
}
@media (max-height: 700px) and (min-width: 981px){
  .story__text{ -webkit-line-clamp:5; }
  .histogram-card{ height:clamp(150px, 25vh, 250px); }
}
/* Short windows (a 768px laptop screen once the browser and taskbar take
   their share): tighten the chrome so the panels still fit unscrolled. */
@media (max-height: 660px) and (min-width: 981px){
  .site-header--demo .site-header__inner{ padding-top:.35rem; padding-bottom:.35rem; }
  .app{ gap:8px; padding-top:7px; padding-bottom:9px; }
  .workspace{ gap:10px; }
  .stage{ gap:10px; }
  .sidebar{ padding:8px; gap:8px; }
  .tab-panel{ gap:8px; }
  .group{ gap:6px; padding:8px 10px; }
  .story__text{ -webkit-line-clamp:4; }
  .own-images .helper{ display:none; }
  .histogram-card{ height:clamp(140px, 25vh, 250px); }
}

/* ── Tablets and phones: stack and let the page scroll ─────────────────── */
@media (max-width: 980px){
  html,body{ height:auto; }
  body{ height:auto; min-height:100vh; overflow:auto; }
  .app{ flex:none; }
  .app-bar{ flex-wrap:wrap; }
  .app-bar__stats{ order:3; width:100%; margin:0; flex-wrap:wrap; }
  .stat{ flex:1 1 120px; }
  .stat:nth-child(4){ display:block; }
  .stat dd{ max-width:none; }
  .app-bar__actions{ margin-left:auto; }
  .workspace{ grid-template-columns:1fr; }
  .stage{ order:1; }
  .sidebar{ order:2; }
  .insights{ order:3; overflow:visible; }
  .viewer-card{ flex:none; aspect-ratio:3 / 2; }
  .histogram-card{ height:230px; }
  .tab-panel{ overflow:visible; }
  .rose{ flex:none; height:280px; }
  .library{ grid-template-columns:repeat(9, minmax(0, 1fr)); }
}
@media (max-width: 700px){
  .library{ grid-template-columns:repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 560px){
  .app{ padding:8px 10px 12px; }
  .histogram-head{ flex-wrap:wrap; }
  .selection{ margin-left:0; width:100%; }
  .histogram-head .hint{ display:none; }
  .viewer__hint{ display:none; }
}