/* Base: the prototype got these from the artifact page skeleton. */
[hidden]{display:none!important}
html,body{margin:0}
img,svg{max-width:100%}
/* Layout: a flat-lay "tray" on the left where the necklace sits at true relative scale; numbered build steps on the right; a fixed price bar along the bottom. */
:root{
  --bg:#F3F2F5; --surface:#FFFFFF; --tray:#ECE9EF; --tray2:#DEDAE3;
  --ink:#211E27; --muted:#6B6575; --line:#DEDAE4;
  --accent:#2E6A58; --accent-ink:#FFFFFF; --accent-soft:#E3EFEA;
  --warn:#9A4E17; --warn-soft:#F8EADF; --scrim:rgba(24,20,30,.45);
  --f-display:"Bodoni Moda","Didot","Bodoni 72",Georgia,serif;
  --f-body:"Jost","Avenir Next","Helvetica Neue",Arial,sans-serif;
  --f-mono:"DM Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#17151B; --surface:#211F27; --tray:#2B2832; --tray2:#1D1B22;
  --ink:#EDEAF2; --muted:#A39DAE; --line:#36323F;
  --accent:#7CC4A9; --accent-ink:#0F1F19; --accent-soft:#1F332C;
  --warn:#E3A06B; --warn-soft:#3A2A1E; --scrim:rgba(0,0,0,.6); color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#17151B; --surface:#211F27; --tray:#2B2832; --tray2:#1D1B22;
  --ink:#EDEAF2; --muted:#A39DAE; --line:#36323F;
  --accent:#7CC4A9; --accent-ink:#0F1F19; --accent-soft:#1F332C;
  --warn:#E3A06B; --warn-soft:#3A2A1E; --scrim:rgba(0,0,0,.6); color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.5;padding-bottom:104px}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1200px;margin:0 auto;padding-inline:16px}

/* header */
.top{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 24px;padding-block:20px 10px}
.brand h1{font-family:var(--f-display);font-style:italic;font-weight:500;font-size:clamp(28px,4vw,40px);line-height:1.05;margin:0;letter-spacing:-.01em;text-wrap:balance}
.brand p{margin:6px 0 0;color:var(--muted);font-size:13px}

/* design view */
.app{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:28px;align-items:start;padding-block:10px 24px}
.stage{position:sticky;top:calc(env(safe-area-inset-top,0px) + 12px);background:radial-gradient(120% 90% at 50% 42%,var(--tray) 0%,var(--tray2) 100%);border-radius:20px;overflow:hidden;display:flex;flex-direction:column}
.stage-head{display:flex;justify-content:space-between;gap:12px;padding:14px 18px 0;font-size:11px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
svg.neck{width:100%;height:auto;display:block;max-height:68vh}
.bead{cursor:pointer;transition:opacity .15s}
.bead:hover{opacity:.75}
.nk-thread{stroke:var(--muted)}
.nk-name{fill:var(--ink);font-family:var(--f-display);font-style:italic}
.nk-sub{fill:var(--muted);font-family:var(--f-mono);font-size:11px;letter-spacing:.04em}
.nk-scale{stroke:var(--muted)}
.nk-scale-t{fill:var(--muted);font-family:var(--f-mono);font-size:10px}
.brush{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;padding:8px 18px 16px;font-size:13px;color:var(--muted)}
.brush .lbl{font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.brush button.sw{width:28px;height:28px;border-radius:50%;border:0;cursor:pointer;box-shadow:0 1px 2px rgba(0,0,0,.25)}
.brush button.sw[aria-pressed="true"]{outline:2px solid var(--ink);outline-offset:2px}
.brush .tip{flex:1 1 180px;min-width:0}
.linkbtn{border:0;background:none;padding:0;color:var(--accent);text-decoration:underline;text-underline-offset:3px;cursor:pointer;font-size:13px}

.panel{display:flex;flex-direction:column;gap:12px;min-width:0}
.step{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:18px}
.step h2{display:flex;gap:10px;align-items:baseline;font-size:16px;font-weight:600;margin:0}
.num{font-family:var(--f-mono);font-size:12px;font-weight:500;color:var(--accent)}
.hint{color:var(--muted);font-size:13px;margin:2px 0 12px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:transparent;padding:6px 14px 6px 8px;border-radius:999px;font-weight:500;font-size:14px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.mini{display:inline-flex}
.mini i{width:14px;height:14px;border-radius:50%;margin-left:-4px;box-shadow:0 0 0 1.5px var(--surface)}
.mini i:first-child{margin-left:0}
.stones{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.stone{display:grid;grid-template-columns:30px minmax(0,1fr);gap:2px 10px;text-align:left;padding:10px;border:1px solid var(--line);border-radius:12px;background:transparent;cursor:pointer}
.stone .sw{grid-row:span 2;width:30px;height:30px;border-radius:50%;box-shadow:0 1px 2px rgba(0,0,0,.25)}
.stone b{font-weight:500;font-size:14px;line-height:1.25}
.stone small{color:var(--muted);font-size:12px;line-height:1.3}
.stone .meta{grid-column:1/-1;display:flex;justify-content:space-between;gap:6px;margin-top:6px;font-family:var(--f-mono);font-size:11px;color:var(--muted)}
.stone[aria-pressed="true"]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--accent-soft)}
.stone:disabled{opacity:.5;cursor:not-allowed}
.low{color:var(--warn)}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.seg button{border:0;border-left:1px solid var(--line);background:transparent;padding:9px 6px;cursor:pointer;font-size:14px;line-height:1.25}
.seg button:first-child{border-left:0}
.seg button small{display:block;color:var(--muted);font-size:11px}
.seg button[aria-pressed="true"]{background:var(--accent-soft);color:var(--accent);font-weight:600}
.seg button:disabled{opacity:.45;cursor:not-allowed}
.row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}
.field{display:flex;flex-direction:column;gap:6px;margin-top:14px}
.field>span{font-size:13px;color:var(--muted)}
.check{display:flex;align-items:center;gap:10px;cursor:pointer;margin-top:14px}
.check input{width:18px;height:18px;accent-color:var(--accent)}
.medals{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.medal{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 4px;border:1px solid var(--line);border-radius:12px;background:transparent;cursor:pointer;font-size:13px}
.medal svg{width:34px;height:34px}
.medal[aria-pressed="true"]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}
.medal .none{width:34px;height:34px;border-radius:50%;border:1.5px dashed var(--line)}
.tag{font-family:var(--f-mono);font-size:10px;letter-spacing:.04em;text-transform:uppercase}
.tag.ust{color:var(--accent)}
input[type="number"],input[type="text"]{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%}
input.letter{width:64px;text-align:center;font-family:var(--f-display);font-size:20px;padding:6px}
.sub-label{font-size:13px;color:var(--muted);margin:14px 0 6px}
dl.sum{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 16px;margin:0;font-size:14px}
dl.sum dt{color:var(--muted)}
dl.sum dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}
dl.sum .tot{border-top:1px solid var(--line);padding-top:8px;margin-top:4px;color:var(--ink);font-weight:600}
.note{font-size:12px;color:var(--muted);margin:10px 0 0}
.warnbox{background:var(--warn-soft);color:var(--warn);border-radius:10px;padding:10px 12px;font-size:13px;margin-top:12px}

/* bottom bar */
.bar{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:1px solid var(--line);padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px))}
.bar-in{max-width:1168px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px}
.bar-info{min-width:0}
.bar-info b{font-family:var(--f-display);font-style:italic;font-weight:500;font-size:18px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-info span{font-size:12px;color:var(--muted);font-family:var(--f-mono)}
.bar-right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.price{font-family:var(--f-display);font-size:26px;font-weight:500;font-variant-numeric:tabular-nums}
.btn{border:0;border-radius:999px;padding:12px 22px;font-weight:600;font-size:15px;cursor:pointer;background:var(--ink);color:var(--bg)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn.acc{background:var(--accent);color:var(--accent-ink)}
.btn.sm{padding:8px 14px;font-size:13px}

/* confirm sheet */
.sheet{position:fixed;inset:0;z-index:40;background:var(--scrim);display:grid;place-items:center;padding:16px}
.sheet-card{background:var(--surface);border-radius:20px;width:100%;max-width:560px;max-height:calc(100% - 32px);overflow:auto;padding:22px}
.sheet-card h3{font-family:var(--f-display);font-style:italic;font-weight:500;font-size:26px;margin:0 0 4px}
.sheet-grid{display:grid;grid-template-columns:150px minmax(0,1fr);gap:16px;align-items:center;margin:14px 0}
.sheet-grid .thumb{background:radial-gradient(120% 90% at 50% 42%,var(--tray) 0%,var(--tray2) 100%);border-radius:14px}
.sheet-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:18px}

.toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%);z-index:50;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:999px;font-size:14px;max-width:calc(100% - 32px);text-align:center;box-shadow:0 6px 20px rgba(0,0,0,.2)}

@media (max-width:880px){
  .app{grid-template-columns:minmax(0,1fr)}
  .app .stage{top:0;z-index:5;border-radius:0 0 18px 18px;margin-inline:-16px;box-shadow:0 8px 16px -12px rgba(0,0,0,.35)}
  .app svg.neck{max-height:34vh}
  .app .stage-head{display:none}
  .price{font-size:22px}
  .bar-info span{display:none}
}
@media (max-width:480px){
  .sheet-grid{grid-template-columns:minmax(0,1fr)}
  .sheet-grid .thumb{max-width:200px}
  .btn{padding:11px 16px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

.err{background:var(--warn-soft);color:var(--warn);border-radius:10px;padding:10px 12px;font-size:13px;margin-top:12px}
.btn[aria-busy="true"]{opacity:.6;cursor:progress}
.nk-name{font-size:inherit}
.stone .sw{background-size:cover!important}
.stone small.yok{color:var(--warn)}
textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;width:100%;resize:vertical}
dl.sum dd{max-width:60%;overflow-wrap:anywhere}

/* close-up viewer */
.stage{position:relative}
.zoom-open{position:absolute;top:10px;right:12px;z-index:2;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:6px 12px;font-size:13px;font-weight:500;cursor:pointer;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.zoom-open svg{width:16px;height:16px}
.app .stage-head{padding-right:140px}
.zoom{position:fixed;inset:0;z-index:45;background:radial-gradient(120% 90% at 50% 42%,var(--tray) 0%,var(--tray2) 100%);display:flex;flex-direction:column;padding:calc(env(safe-area-inset-top,0px) + 10px) 0 calc(env(safe-area-inset-bottom,0px) + 8px)}
.zoom-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;padding:0 16px 8px}
.zoom-bar b{font-family:var(--f-display);font-style:italic;font-weight:500;font-size:20px}
.zoom-ctl{display:flex;flex-wrap:wrap;gap:6px}
.zoom-ctl .btn.ghost{background:var(--surface)}
.zoom-view{flex:1;min-height:0;overflow:hidden;touch-action:none;cursor:grab;position:relative}
.zoom-view.dragging{cursor:grabbing}
.zoom-canvas{position:absolute;left:0;top:0;transform-origin:0 0;will-change:transform}
.zoom-canvas svg.neck{max-height:none;width:100%;height:100%}
.zoom-hint{margin:6px 16px 0;font-size:12px;color:var(--muted);text-align:center}
.zoom .brush{justify-content:center;padding:6px 16px 0}
@media (max-width:880px){.zoom-open{top:8px;right:8px;padding:5px 10px}}