:root{
  --bg:#f4f6f8;
  --surface:#ffffff;
  --surface-2:#eef2f6;
  --ink:#111827;
  --muted:#64748b;
  --line:#d9e1ea;
  --accent:#1d4ed8;
  --accent-2:#0f766e;
  --danger:#dc2626;
  --warn:#b45309;
  --good:#15803d;
  --shadow:0 22px 65px rgba(15,23,42,.10);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;background:radial-gradient(circle at top left,rgba(29,78,216,.10),transparent 360px),linear-gradient(180deg,var(--surface-2),var(--bg) 340px);color:var(--ink)}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
button{touch-action:manipulation}
hr{border:0;border-top:1px solid var(--line);margin:24px 0}
h1,h2,h3,h4{letter-spacing:-.035em;color:var(--ink)}
h1{font-size:clamp(2.1rem,4.8vw,4.7rem);line-height:.98;margin:10px 0 14px}
h2{font-size:1.45rem;margin:0 0 12px}
h3{margin:0 0 8px}.wrap{width:min(1260px,94vw);margin:0 auto}.section{padding:30px 0 54px}.hidden{display:none!important}.muted{color:var(--muted)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0;position:relative;z-index:10}.brand{display:inline-flex;align-items:center;gap:3px;font-weight:950;letter-spacing:-.055em;font-size:1.42rem}.brand:before{content:"";width:12px;height:28px;border-radius:999px;background:linear-gradient(180deg,var(--accent),var(--accent-2));display:inline-block;margin-right:7px}.brand span{color:var(--accent)}.nav{display:flex;gap:9px;align-items:center;flex-wrap:wrap}.nav a,.small-btn{color:var(--ink);border:1px solid var(--line);padding:9px 13px;border-radius:999px;background:color-mix(in srgb,var(--surface) 88%,transparent);cursor:pointer;box-shadow:0 4px 18px rgba(15,23,42,.04)}.nav a:hover,.small-btn:hover{border-color:var(--accent);color:var(--accent)}
.nav a.admin-entry{opacity:.56;font-size:.82rem;padding:7px 11px;background:transparent;box-shadow:none}
.nav a.admin-entry:hover{opacity:1;background:var(--surface)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff;border:1px solid transparent;border-radius:calc(var(--radius) - 5px);padding:11px 16px;font-weight:850;cursor:pointer;box-shadow:0 10px 22px color-mix(in srgb,var(--accent) 24%,transparent)}.btn:hover{filter:brightness(.96)}.btn.secondary{background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:none}.btn.danger{background:var(--surface);color:var(--danger);border-color:color-mix(in srgb,var(--danger) 35%,var(--line));box-shadow:none}.btn.warn{background:#f59e0b;color:#1f1300}.icon-btn{width:52px;height:52px;border:1px solid var(--line);background:var(--surface);border-radius:calc(var(--radius) - 2px);cursor:pointer;font-size:1.25rem;box-shadow:0 8px 22px rgba(15,23,42,.06)}
.card{background:color-mix(in srgb,var(--surface) 95%,transparent);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 34px rgba(15,23,42,.07);backdrop-filter:blur(12px)}.card.nested{box-shadow:none;background:var(--surface-2)}.auth-card{max-width:470px;margin:60px auto}.lead{color:var(--muted);font-size:1.08rem;line-height:1.62;max-width:780px}.eyebrow{display:inline-block;color:var(--accent);text-transform:uppercase;letter-spacing:.15em;font-size:.73rem;font-weight:950;margin-bottom:8px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.apart{justify-content:space-between}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}.field{display:flex;flex-direction:column;gap:7px;margin:12px 0}.field label{color:color-mix(in srgb,var(--ink) 72%,var(--muted));font-size:.9rem;font-weight:820}.field input,.field textarea,.field select,.home-code-row input{background:var(--surface);border:1px solid var(--line);color:var(--ink);padding:12px 13px;border-radius:calc(var(--radius) - 6px);width:100%;outline:none}.field input:focus,.field textarea:focus,.field select:focus,.home-code-row input:focus{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 13%,transparent)}.field textarea{min-height:110px;resize:vertical}.pill{display:inline-flex;align-items:center;width:max-content;background:color-mix(in srgb,var(--accent) 9%,var(--surface));border:1px solid color-mix(in srgb,var(--accent) 18%,var(--line));border-radius:999px;padding:5px 9px;color:color-mix(in srgb,var(--ink) 70%,var(--accent));font-size:.82rem;font-weight:780}.warn-pill{background:#fffbeb;border-color:#fde68a;color:var(--warn)}.good-pill{background:#ecfdf5;border-color:#bbf7d0;color:var(--good)}.notice{border-left:4px solid var(--accent);padding:12px 14px;background:var(--surface-2);border-radius:calc(var(--radius) - 6px);color:var(--muted)}
.choice{display:block;border:1px solid var(--line);border-radius:calc(var(--radius) - 4px);padding:14px 15px;margin:10px 0;background:var(--surface);cursor:pointer}.choice:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 4%,var(--surface))}.choice input{margin-right:10px}.choice.compact{padding:10px 12px;margin:10px 0}.switch{display:flex;align-items:center;gap:9px;color:var(--ink);font-weight:850}.footer{padding:26px 0 36px;color:var(--muted);font-size:.9rem}.description-block{margin:8px 0 10px}.description-text{white-space:pre-wrap;color:var(--muted);line-height:1.5;margin:0}.description-block.collapsed .description-text{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.description-toggle{margin-top:7px;background:transparent;border:0;color:var(--accent);font-weight:850;cursor:pointer;padding:0}.public-description{margin:12px 0 18px}
.home-command{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,.72fr);gap:24px;align-items:stretch;padding:54px 0 38px}.home-panel{min-height:560px;border:1px solid var(--line);border-radius:32px;padding:42px;background:linear-gradient(145deg,color-mix(in srgb,var(--surface) 96%,transparent),color-mix(in srgb,var(--surface-2) 80%,transparent));box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:center}.home-panel h1{max-width:820px}.home-code-card{width:min(650px,100%);margin-top:24px;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:0 12px 38px rgba(15,23,42,.07)}.home-code-row{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center}.home-action-stack{display:grid;grid-template-rows:1.15fr 1fr 1fr;gap:16px}.big-card{display:flex;flex-direction:column;justify-content:space-between;gap:22px;min-height:155px;padding:24px;border-radius:28px;background:var(--surface);border:1px solid var(--line);box-shadow:0 14px 36px rgba(15,23,42,.07);transition:.18s ease}.big-card:hover{transform:translateY(-2px);border-color:var(--accent)}.big-card.primary-action{background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 10%,var(--surface)),var(--surface))}.big-card b{font-size:1.5rem;letter-spacing:-.04em}.big-card p,.card p{color:var(--muted);line-height:1.5}.arrow{font-size:2rem;color:var(--accent)}
.section-heading,.workspace-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin:8px 0 20px}.workspace-heading h1,.section-heading h1{font-size:clamp(2rem,4vw,3.7rem)}.compact-heading{margin-top:0}.list-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;border:1px solid var(--line);background:var(--surface);border-radius:calc(var(--radius) - 2px);padding:16px;margin:10px 0}.list-item h3{margin:0 0 5px}.list-item p{margin:0;color:var(--muted)}
.admin-dashboard-shell{display:grid;grid-template-columns:270px minmax(0,1fr);gap:20px;align-items:start}.admin-rail{position:sticky;top:14px;padding:16px}.rail-head{padding:8px 8px 14px}.rail-head h2{margin:0}.rail-link{display:block;margin:8px 0;text-align:left}.tab-btn{display:flex;width:100%;justify-content:flex-start;margin:7px 0;border-radius:14px}.admin-stage{min-width:0}.admin-tab{margin:0}.split-section{display:grid;grid-template-columns:minmax(0,.92fr) minmax(360px,1.08fr);gap:18px;margin-top:24px}.builder-top{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.settings-drawer{display:none;border:1px solid var(--line);background:var(--surface-2);border-radius:24px;padding:18px;margin:16px 0}.settings-drawer.open{display:block}.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.settings-grid .full{grid-column:1/-1}.builder-shell{border:1px solid var(--line);border-radius:26px;background:var(--surface);overflow:hidden;box-shadow:0 12px 30px rgba(15,23,42,.05)}.builder-nav{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;gap:10px;border-bottom:1px solid var(--line);padding:14px;background:var(--surface-2)}.builder-nav select{width:100%;border:1px solid var(--line);border-radius:13px;padding:11px;background:var(--surface);color:var(--ink)}.question-slide-editor{padding:24px}.builder-question-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.builder-actions{border-top:1px solid var(--line);padding:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--surface-2)}.question-box,.option-row{border:1px solid var(--line);border-radius:16px;padding:14px;background:var(--surface);margin:12px 0}.option-row{display:grid;grid-template-columns:1fr minmax(180px,.4fr) auto;gap:10px;align-items:center}.option-row input,.option-row select{border:1px solid var(--line);border-radius:12px;padding:10px;background:var(--surface);color:var(--ink)}.scoring-group-row{display:grid;grid-template-columns:110px 1fr 64px auto;gap:10px;margin:10px 0;align-items:center}.scoring-group-row input{border:1px solid var(--line);border-radius:12px;padding:10px;background:var(--surface);color:var(--ink)}.scoring-group-row input[type=color]{height:44px;padding:4px}
.playground-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.analytics-output-panel{margin-top:16px;border:1px solid var(--line);border-radius:20px;background:var(--surface);padding:16px}.theme-workbench{display:grid;grid-template-columns:290px minmax(0,1fr);gap:18px;align-items:start}.theme-library{position:sticky;top:14px;background:var(--surface-2);border:1px solid var(--line);border-radius:22px;padding:16px}.theme-grid{display:grid;grid-template-columns:repeat(4,minmax(120px,1fr));gap:12px}.color-field input[type=color]{height:46px;padding:5px}.theme-preview{margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:18px;border:1px solid var(--line);border-radius:24px;padding:20px;background:linear-gradient(145deg,var(--surface),var(--surface-2))}
.analytics-layout{display:grid;grid-template-columns:285px minmax(0,1fr);gap:18px;align-items:start}.analytics-sidebar{position:sticky;top:14px;max-height:calc(100vh - 28px);overflow:auto}.analytics-main{min-width:0}.side-chip{display:flex;width:100%;flex-direction:column;align-items:flex-start;gap:4px;border:1px solid var(--line);background:var(--surface);border-radius:15px;padding:12px;margin:8px 0;cursor:pointer;color:var(--ink);text-align:left}.side-chip:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 4%,var(--surface))}.side-chip small{color:var(--muted)}.analytics-sticky{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--surface) 94%,transparent);border:1px solid var(--line);border-radius:16px;padding:10px;margin:0 0 12px;display:flex;gap:8px;flex-wrap:wrap;backdrop-filter:blur(12px)}.mini-chip{border:1px solid var(--line);border-radius:999px;padding:5px 9px;background:var(--surface);color:var(--accent);font-size:.82rem;font-weight:850}.analytics-filter-card{border:1px solid var(--line);background:var(--surface);border-radius:18px;padding:16px;margin:12px 0}.analytics-filter-card h3{margin-top:0}.analytics-filter-grid{display:grid;grid-template-columns:minmax(220px,1fr) minmax(180px,.75fr) auto;gap:12px;align-items:end}.filter-button-field{justify-content:flex-end}.analytics-results-list{display:grid;gap:12px}.analytics-card{border:1px solid var(--line);background:var(--surface);border-radius:18px;overflow:hidden}.analytics-card summary{cursor:pointer;list-style:none;padding:15px 16px}.analytics-card summary::-webkit-details-marker{display:none}.analytics-card summary span{display:flex;flex-direction:column;gap:6px}.analytics-card summary small{color:var(--muted);line-height:1.35}.analytics-card summary:hover{background:color-mix(in srgb,var(--accent) 4%,var(--surface))}.analytics-card-body{padding:0 16px 16px}.text-response-list{display:grid;gap:10px}.text-response{white-space:pre-wrap}.chart-row{margin:10px 0}.bar{height:28px;background:var(--surface-2);border-radius:999px;overflow:hidden;border:1px solid var(--line)}.bar span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));min-width:2px}.pageview-chart-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:18px;margin:14px 0;overflow-x:auto}.pageview-chart{width:100%;min-width:620px;height:260px}.pageview-chart .pv-grid{stroke:var(--line);stroke-width:1}.pageview-chart .pv-area{fill:color-mix(in srgb,var(--accent) 14%,transparent)}.pageview-chart .pv-line{fill:none;stroke:var(--accent);stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.pageview-chart circle{fill:var(--accent-2);stroke:var(--surface);stroke-width:2}.pageview-chart .pv-axis{fill:var(--muted);font-size:12px}.active-list-item{border-color:var(--accent);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 12%,transparent)}
.progress{height:9px;background:var(--surface-2);border-radius:99px;overflow:hidden;border:1px solid var(--line)}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2))}.slide-body{min-height:100dvh;overflow:auto;background:radial-gradient(circle at top left,color-mix(in srgb,var(--accent) 16%,transparent),transparent 420px),linear-gradient(135deg,var(--surface-2),var(--bg))}.slide-shell{min-height:100dvh;display:flex;flex-direction:column}.slide-top{padding:16px 24px;display:flex;justify-content:space-between;align-items:center;color:var(--muted);border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(14px);flex-shrink:0;position:sticky;top:0;z-index:10}.slide-main{flex:1;display:flex;align-items:center;justify-content:center;padding:30px;width:100%;overflow:auto}.slide-card{width:min(900px,92vw);max-height:calc(100dvh - 112px);overflow:auto;margin:auto;border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 97%,transparent);border-radius:32px;padding:38px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow)}.slide-card h1{font-size:clamp(2rem,4vw,3.8rem);line-height:1.08;margin-top:18px;letter-spacing:-.06em;text-align:center}.slide-card>div:first-child{width:100%}.slide-card .row{justify-content:center}.slide-card .field,.slide-card .choice,.slide-card .progress{max-width:760px;margin-left:auto;margin-right:auto}.slide-card textarea{min-height:170px}.slide-card .lead,.slide-card .muted{text-align:center}.slide-card .notice{text-align:left}
@media(max-width:1080px){.home-command,.admin-dashboard-shell,.analytics-layout,.theme-workbench,.split-section{grid-template-columns:1fr}.admin-rail,.analytics-sidebar,.theme-library{position:static;max-height:none}.playground-grid,.theme-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.wrap{width:min(100% - 24px,1260px)}.topbar{align-items:flex-start;gap:14px;flex-direction:column}.nav{width:100%}.nav a,.small-btn{flex:1;text-align:center}.home-command{padding:20px 0;gap:14px}.home-panel{min-height:0;padding:24px;border-radius:24px}.home-code-row{grid-template-columns:1fr}.home-action-stack{grid-template-rows:none}.settings-grid,.playground-grid,.analytics-filter-grid,.builder-nav,.option-row,.scoring-group-row,.theme-grid{grid-template-columns:1fr}.list-item{grid-template-columns:1fr}.section-heading,.workspace-heading{align-items:flex-start;flex-direction:column}.card{padding:16px}.slide-main{align-items:flex-start;padding:12px}.slide-card{width:100%;max-height:none;min-height:calc(100dvh - 92px);padding:20px;border-radius:22px}.slide-card h1{text-align:left;font-size:clamp(1.55rem,7vw,2.35rem)}.slide-card .lead,.slide-card .muted{text-align:left}.slide-card .row{justify-content:flex-start}.slide-card > .row:last-child{position:sticky;bottom:0;background:linear-gradient(180deg,transparent,var(--surface) 34%);border-top:1px solid var(--line);margin:0 -20px -20px;padding:12px 20px}.slide-card > .row:last-child .btn,.slide-card > .row:last-child a.btn{flex:1 1 130px;text-align:center}.analytics-sticky{top:0}.theme-preview{align-items:flex-start;flex-direction:column}}