:root{
  --bg:#faf9f7; --card:#ffffff; --ink:#1f1b24; --muted:#6b6470;
  --accent:#e8437a; --accent-dark:#c22f60; --line:#e7e2e6; --pool:#f1eef2;
}
*{box-sizing:border-box;}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);}
.top-bar{position:fixed;top:0;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);padding:12px 20px;display:flex;justify-content:space-between;align-items:center;z-index:10;}
#resultsToggle{margin-left:auto;}
.brand-mark{font-weight:700;font-size:.95rem;color:var(--accent);}
.wrap{max-width:1400px;margin:0 auto;padding:64px 48px 96px;}
.back-btn{display:block;margin:0 0 16px;}
h1{font-size:1.5rem;margin:0 0 4px;}
.sub{color:var(--muted);margin:0 0 20px;font-size:.95rem;max-width:780px;}
.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:18px;max-width:880px;}
.instructions{font-size:.95rem;line-height:1.5;border:1px solid color-mix(in srgb, var(--accent) 25%, white);border-radius:10px;padding:14px 16px;margin-bottom:18px;max-width:880px;}

.details-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:24px;}
.results-head{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:20px;}
.time-badge{background:color-mix(in srgb, var(--accent) 8%, white);border:1px solid color-mix(in srgb, var(--accent) 25%, white);border-radius:20px;padding:8px 16px;font-size:.8rem;font-weight:700;color:var(--muted);white-space:nowrap;}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0 auto 22px;}
.step{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 18px;text-align:center;}
.step-icon{width:44px;height:44px;border-radius:10px;background:var(--pool);margin:0 auto 14px;display:flex;align-items:center;justify-content:center;}
.step-icon-bars{display:flex;gap:3px;}
.step-icon-bars i{display:block;font-style:normal;width:8px;height:22px;border-radius:2px;background:var(--line);}
.step-icon-bars i:first-child{background:var(--accent);}
.step-icon-pair{display:flex;gap:4px;}
.step-icon-pair i{display:block;font-style:normal;width:16px;height:22px;border-radius:3px;background:var(--accent);}
.step-icon-tag{display:block;width:26px;height:18px;border-radius:3px;background:var(--accent);position:relative;}
.step-icon-tag::after{content:'';position:absolute;bottom:-8px;left:2px;right:2px;height:2px;background:var(--accent);}
.step-num{font-size:.7rem;font-weight:700;color:var(--muted);letter-spacing:.03em;margin-bottom:4px;}
.step-label{font-size:.86rem;font-weight:600;color:var(--ink);}

.welcome{max-width:620px;padding-top:6vh;}
.welcome-title{font-size:2.25rem;font-weight:700;line-height:1.15;margin:0 0 16px;}
.welcome-lead{font-size:1.2rem;line-height:1.45;color:var(--ink);margin:0 0 24px;}
.welcome-body{font-size:1rem;line-height:1.55;color:var(--muted);margin:0 0 12px;}
button.btn.welcome-start{padding:13px 24px;font-size:.95rem;}
.welcome-fineprint{font-size:1rem;line-height:1.55;color:var(--muted);margin:0 0 32px;}
@media (max-width:720px){
  .welcome{padding-top:8px;}
  .welcome-title{font-size:1.75rem;}
  .welcome-lead{font-size:1.08rem;}
  button.btn.welcome-start{width:100%;}
}
#detailsScreen .panel{max-width:420px;}
#exportBtnMobile{display:none;}

@media (max-width:720px){
  .steps{grid-template-columns:1fr;}
  #detailsScreen .panel{max-width:none;}
  #exportBtn{display:none;}
  #exportBtnMobile{display:inline-block;}
}
dialog{border:none;border-radius:14px;padding:24px;max-width:560px;width:90%;box-shadow:0 12px 40px rgba(0,0,0,.18);}
dialog::backdrop{background:rgba(0,0,0,.45);}
label{font-size:.85rem;font-weight:600;color:var(--muted);display:block;margin-bottom:6px;}
input[type=text],input[type=password]{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:.95rem;}
.question-num{font-size:.7rem;font-weight:700;color:var(--muted);letter-spacing:.03em;margin-bottom:6px;}
.question-optional{font-weight:600;letter-spacing:0;}
.question-text{font-size:1rem;font-weight:600;color:var(--ink);margin-bottom:12px;}
.choice-question{border:none;margin:0;padding:0;min-width:0;}
.choice-question legend{padding:0;}
.choice-hint{margin:-6px 0 10px;font-size:.8rem;color:var(--muted);}
.choice-option{display:flex;align-items:center;gap:10px;margin:0 0 8px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font-size:.95rem;font-weight:500;color:var(--ink);cursor:pointer;}
.choice-option:last-child{margin-bottom:0;}
.choice-option:has(input:checked){border-color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, white);}
.choice-option input{margin:0;width:16px;height:16px;accent-color:var(--accent);}
.choice-bars{display:flex;flex-direction:column;gap:8px;margin:0 0 8px;max-width:520px;}
.choice-bar-row{display:flex;align-items:center;gap:12px;font-size:.85rem;}
.choice-bar-label{flex:0 0 70px;color:var(--ink);}
.choice-bar-track{flex:1;height:10px;border-radius:5px;background:var(--line);overflow:hidden;}
.choice-bar-fill{display:block;height:100%;background:var(--accent);}
.choice-bar-value{flex:0 0 64px;color:var(--muted);font-size:.8rem;}
textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-size:.95rem;font-family:inherit;resize:vertical;box-sizing:border-box;}
/* --- sort workspace: vertical pool on the left, open group canvas on the right --- */
.workspace{display:flex;gap:16px;align-items:flex-start;margin-bottom:18px;}
.pool-panel{flex:0 0 300px;position:sticky;top:16px;margin-bottom:0;}
.canvas{flex:1 1 auto;min-width:0;background:color-mix(in srgb, var(--accent) 8%, white);border:1px solid color-mix(in srgb, var(--accent) 25%, white);border-radius:14px;padding:16px;}
.canvas-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;}
#addGroupBtn{display:none;}

.pool{display:flex;flex-direction:column;flex-wrap:nowrap;gap:8px;min-height:44px;max-height:calc(100dvh - 380px);overflow-y:auto;background:color-mix(in srgb, var(--accent) 8%, white);border-radius:10px;padding:12px;}
#poolRevealControls{display:flex;flex-direction:column;align-items:stretch;gap:8px;margin-top:10px;}
#poolRevealControls button.btn{width:100%;}
#poolRevealControls .top-link{text-align:center;}
.card-chip{background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:9px 13px;font-size:.88rem;cursor:grab;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:manipulation;transition:.15s;text-align:left;}
.card-chip:hover{border-color:var(--accent);}
.card-chip.selected{background:var(--accent);color:#fff;border-color:var(--accent-dark);}
.card-chip.dragging{opacity:.4;cursor:grabbing;}
.touch-ghost{position:fixed;z-index:1000;pointer-events:none;opacity:.92;box-shadow:0 8px 20px rgba(0,0,0,.22);transform:scale(1.03);}

.groups{display:flex;flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:12px;}
.group{flex:0 1 calc((100% - 24px)/3);max-width:calc((100% - 24px)/3);border:1.5px dashed var(--line);border-radius:12px;padding:12px;background:#fff;}
.group.target{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, white);}
.group.dragging{opacity:.5;}
.group.group-drag-over{border-color:var(--accent);outline:2px dashed var(--accent);outline-offset:2px;}
.pool.drag-over, .group-cards.drag-over{outline:2px dashed var(--accent);outline-offset:2px;background:color-mix(in srgb, var(--accent) 8%, white);}
.group-head{display:flex;gap:8px;align-items:center;margin-bottom:10px;}
.group-head input{flex:1;min-width:0;font-weight:700;}
.group-head input::placeholder{font-weight:400;}
.group-drag-handle{display:flex;align-items:center;justify-content:center;color:var(--muted);cursor:grab;flex-shrink:0;padding:8px 6px;margin:-8px -6px -8px 0;-webkit-touch-callout:none;touch-action:manipulation;user-select:none;-webkit-user-select:none;}
.group-drag-handle:active{cursor:grabbing;}
.collapse-toggle{background:none;border:none;color:var(--muted);cursor:pointer;padding:2px 4px;flex-shrink:0;display:flex;align-items:center;}
.collapse-toggle:hover{color:var(--accent);}
.collapse-toggle svg{display:block;transition:transform .15s;}
.collapse-toggle.collapsed svg{transform:rotate(180deg);}
.remove-group{background:none;border:none;color:var(--muted);cursor:pointer;font-size:1.1rem;padding:2px 8px;}
.group-cards{display:flex;flex-direction:column;flex-wrap:nowrap;gap:6px;min-height:40px;}
.group.collapsed .group-cards .card-chip{display:none;}
.group.collapsed .collapse-toggle svg{transform:rotate(180deg);}
.add-group-tile{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:120px;background:transparent;border-color:var(--muted);color:var(--muted);font-weight:600;font-size:.9rem;cursor:pointer;transition:.15s;}
.add-group-tile:hover{border-color:var(--accent);color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, white);}
.add-group-icon{font-size:1.8rem;line-height:1;}

@media (max-width:720px){
  .wrap{padding:64px 24px 96px;}
  /* keep pool + canvas side by side as two narrow columns instead of stacking */
  .workspace{gap:0px;margin:0;}
  /* panel and canvas share the same max-height cap; each has a fixed header and a scrolling
     inner list (.pool / .groups) that fills whatever space is left within that cap */
  .pool{max-height:calc(100dvh - 200px);}
  .pool-panel{flex:0 0 42%;width:auto;position:static;display:flex;flex-direction:column;max-height:calc(100dvh - 200px);}
  .pool-panel label{flex-shrink:0;font-size:.78rem;flex-wrap:wrap;gap:4px;}
  .panel{border:none;border-radius: 0px 0px 0px 0px;padding: 16px;}
  #poolRevealControls{flex-shrink:0;}
  .canvas{width:auto;padding:16px;display:flex;flex-direction:column;max-height:calc(100dvh - 200px);border:none;border-radius:0px 0px 0px 0px;}
  .canvas-head{margin-bottom:18px;flex-shrink:0;}
  .canvas-head label{font-size:.78rem;}
  .pool{flex:1 1 auto;flex-direction:column;flex-wrap:nowrap;overflow-y:auto;padding:8px;gap:6px;}
  .groups{flex:1 1 auto;overflow-y:auto;}
  .card-chip{padding:8px 10px;font-size:.82rem;}
  .group{flex-basis:100%;max-width:none;padding:8px;}
  .group-head{gap:4px;}
  .group-head input{font-size:.82rem;padding:6px 8px;}
  .canvas .row{display:none;}
  body.sort-active{overflow:hidden;}
  body.sort-active .wrap{padding-left:0;padding-right:0;}
}
button.btn{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:11px 18px;font-size:.9rem;font-weight:600;cursor:pointer;}
button.btn:hover{background:var(--accent-dark);}
button.btn.secondary{background:#fff;color:var(--accent);border:1.5px solid var(--accent);}
button.btn.ghost{background:none;color:var(--muted);border:1px solid var(--line);}
button.btn:disabled{opacity:.6;cursor:not-allowed;}
@media (max-width:720px){
  button.btn{font-size:.82rem;}
}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px;}
.hint{font-size:.82rem;color:var(--muted);margin-top:6px;}
.footer-nav{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);padding:12px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;}
.footer-slot{display:flex;align-items:center;gap:10px;}
.top-link{font-size:.82rem;color:var(--muted);text-decoration:underline;cursor:pointer;}

.tabs-bar{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:12px;margin:22px 0 18px;border-bottom:1px solid var(--line);}
.tabs{display:flex;gap:22px;flex-wrap:wrap;}
.tab{background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-1px;padding:10px 2px;font-size:.88rem;font-weight:600;color:var(--muted);cursor:pointer;}
.tab:hover{color:var(--ink);}
.tab.active{color:var(--accent);border-bottom-color:var(--accent);}
.tab-panel{max-width:none;width:100%;}

.results-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px;}
.results-toolbar input[type=text]{width:auto;flex:1 1 200px;}
.results-toolbar select{flex:0 0 auto;}

.response-list{display:flex;flex-direction:column;gap:8px;}
.response-row{border:1px solid var(--line);border-radius:10px;overflow:hidden;}
.response-head{display:flex;align-items:center;gap:14px;padding:10px 14px;cursor:pointer;background:var(--card);flex-wrap:wrap;}
.response-head:hover{background:color-mix(in srgb, var(--accent) 6%, white);}
.response-chevron{display:inline-flex;flex-shrink:0;color:var(--muted);transition:transform .15s;}
.response-row.expanded .response-chevron{transform:rotate(180deg);}
.response-cell{flex:1 1 120px;min-width:0;font-size:.85rem;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.response-id{flex:0 0 50px;color:var(--muted);font-family:ui-monospace,Menlo,monospace;font-size:.8rem;}
.response-name{flex:0 0 140px;font-weight:600;}
.response-count{flex:0 0 auto;margin-left:auto;}
.response-body{display:none;padding:16px;border-top:1px solid var(--line);background:color-mix(in srgb, var(--accent) 4%, white);}
.response-row.expanded .response-body{display:block;}
.response-body .group.collapsed .group-cards{min-height:0;}
.response-section-title{font-size:.75rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin:0 0 10px;}
.response-section-divider{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);}
.response-feedback{display:flex;flex-direction:column;gap:10px;}
.response-qa{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;}
.response-qa .question-num{margin-bottom:4px;}
.response-qa-question{font-size:.85rem;font-weight:600;color:var(--muted);margin-bottom:8px;}
.response-qa-answer{font-size:.95rem;color:var(--ink);white-space:pre-wrap;line-height:1.45;}
.response-qa-answer .empty{padding:0;}
.response-row.excluded{opacity:.55;}

.empty-state{display:flex;flex-direction:column;align-items:center;text-align:center;padding:48px 16px;}
.empty-state-icon{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;margin-bottom:16px;background:color-mix(in srgb, var(--accent) 10%, white);color:var(--accent);}
.empty-state-title{margin:0 0 6px;font-size:1rem;color:var(--ink);}
.empty-state-text{margin:0;max-width:360px;font-size:.88rem;color:var(--muted);}

.q-result{border:1px solid var(--line);border-radius:10px;padding:20px;margin-bottom:18px;}
.q-result:last-child{margin-bottom:0;}
.q-result-title{margin:0 0 18px;font-size:1rem;}
.q-result-meta{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:.8rem;color:var(--muted);}
.q-result-text{margin:2px 0 18px;font-size:.9rem;}
.q-search{max-width:240px;}
.q-table-scroll{margin-top:14px;overflow-y:auto;border-bottom:1px solid var(--line);}
.q-table{margin-top:0;}
.q-table thead th{position:sticky;top:0;z-index:1;background:var(--card);box-shadow:inset 0 -1px 0 var(--line);}
.q-table tbody tr:last-child td{border-bottom:none;}
.q-table th,.q-table td{padding:14px 9px;vertical-align:top;}
.q-col-participant{width:200px;}
.q-sort{display:inline-flex;align-items:center;gap:8px;background:none;border:none;padding:0;font:inherit;font-weight:600;color:var(--ink);cursor:pointer;}
.q-sort svg{color:var(--muted);}
.q-sort.active svg{color:var(--accent);}
.q-participant{background:none;border:none;padding:0;font:inherit;color:var(--accent);cursor:pointer;text-align:left;}
.q-participant:hover{text-decoration:underline;}
.q-answer{white-space:pre-wrap;color:var(--ink);}
.q-table td .empty{padding:0;}
@media (max-width:720px){
  .q-result{padding:14px;}
  .q-col-participant{width:110px;}
  .q-search{max-width:none;}
}
.exclude-switch{display:flex;align-items:center;gap:8px;flex:0 0 auto;margin:0;cursor:pointer;font-size:.75rem;font-weight:600;color:var(--muted);user-select:none;}
.exclude-switch input{position:absolute;opacity:0;width:0;height:0;}
.exclude-switch-track{position:relative;flex-shrink:0;width:34px;height:20px;background:var(--line);border-radius:20px;transition:background .15s;}
.exclude-switch-thumb{position:absolute;top:2px;left:2px;width:16px;height:16px;background:#fff;border-radius:50%;box-shadow:0 1px 2px rgba(0,0,0,.25);transition:transform .15s;}
.exclude-switch input:checked + .exclude-switch-track{background:var(--accent);}
.exclude-switch input:checked + .exclude-switch-track .exclude-switch-thumb{transform:translateX(14px);}
.exclude-switch input:focus-visible + .exclude-switch-track{outline:2px solid var(--accent);outline-offset:2px;}

.count-badge{display:inline-block;flex:0 0 auto;background:color-mix(in srgb, var(--accent) 12%, white);color:var(--accent-dark);font-weight:700;font-size:.75rem;padding:3px 10px;border-radius:20px;white-space:nowrap;}
.response-group-name{flex:1;min-width:0;font-weight:700;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.card-chip.static{cursor:default;}
.card-chip.static:hover{border-color:var(--line);}

@media (max-width:720px){
  .results-toolbar{gap:8px;}
  .results-toolbar input[type=text]{flex:1 1 140px;}
  .response-list{gap:6px;}
  .response-head{gap:6px;padding:8px 10px;}
  .response-cell{flex:1 1 70px;font-size:.78rem;}
  .response-id{flex:0 0 28px;font-size:.7rem;}
  .response-name{flex:0 0 90px;}
  .response-body{padding:10px;}
  .count-badge{font-size:.7rem;padding:2px 8px;}
  .exclude-switch{font-size:.7rem;gap:6px;}
  .exclude-switch-track{width:30px;height:18px;}
  .exclude-switch-thumb{width:14px;height:14px;}
  .exclude-switch input:checked + .exclude-switch-track .exclude-switch-thumb{transform:translateX(12px);}
}
table{width:100%;border-collapse:collapse;font-size:.85rem;margin-top:10px;}
th,td{text-align:left;padding:7px 9px;border-bottom:1px solid var(--line);}
th{color:var(--muted);font-weight:600;}
.demo-cols{display:flex;gap:32px;flex-wrap:wrap;}
.demo-cols>div{flex:1 1 240px;min-width:200px;}
.pie-block{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.pie-block svg{flex-shrink:0;}
.pie-legend{display:flex;flex-direction:column;gap:6px;}
.legend-row{display:flex;align-items:center;gap:8px;font-size:.85rem;}
.legend-swatch{width:11px;height:11px;border-radius:3px;flex-shrink:0;}
.legend-label{color:var(--ink);}
.legend-value{color:var(--muted);font-size:.8rem;}
.matrix-wrap{overflow-x:auto;margin-top:8px;font-size:.78rem;}
.matrix-row{display:flex;align-items:center;gap:2px;padding:1px 6px;border-radius:4px;white-space:nowrap;}
.matrix-row.highlight{background:color-mix(in srgb, var(--accent) 14%, white);}
.matrix-cell{flex:0 0 34px;width:34px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:3px;color:var(--ink);cursor:default;}
.matrix-label{margin-left:10px;color:var(--ink);}
.dendro-wrap{overflow-x:auto;margin-top:8px;}
.dendro-line{fill:none;stroke:var(--muted);stroke-width:1.4;}
.chart-tooltip{position:fixed;display:none;background:#1a1a1a;color:#fff;font-size:.75rem;font-weight:600;padding:5px 9px;border-radius:6px;pointer-events:none;z-index:3000;white-space:nowrap;transform:translate(-50%,-135%);}
select{padding:7px 36px 7px 10px;border:1px solid var(--line);border-radius:8px;font-size:.85rem;background-color:#fff;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%236b6470' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;background-size:12px 8px;}
#confirmScreen{display:none;text-align:center;padding:60px 20px;}
#gate{display:none;}
.empty{color:var(--muted);font-size:.85rem;font-style:italic;padding: 4px 0 4px 8px;}
.error{color:#d32f2f;}

.snackbar{display:none;}
@media (max-width:720px){
  .snackbar{
    display:flex;align-items:center;gap:12px;
    position:fixed;left:16px;right:16px;bottom:76px;
    background:#fff;border:1px solid #e3e3e3;border-radius:4px;
    box-shadow:4px 4px 10px rgba(19,19,19,.2);
    padding:12px 16px;
    z-index:2000;
    opacity:0;
    transform:translateY(calc(100% + 96px));
    transition:transform .3s ease, opacity .3s ease;
    pointer-events:none;
  }
  .snackbar.show{opacity:1;transform:translateY(0);pointer-events:auto;}
  .snackbar-icon{flex-shrink:0;}
  .snackbar-message{flex:1;font-size:.875rem;line-height:1.4;color:#d32f2f;}
  .snackbar-close{flex-shrink:0;background:none;border:none;padding:0;font-size:1rem;line-height:1;color:#121212;cursor:pointer;}
}