:root{--primary:#5b4bdb;--primary-dark:#4537b8;--bg:#f4f5fb;--card:#fff;--text:#1f2233;--muted:#6b7086;--line:#e4e6f0;--ok:#16a34a;--bad:#dc2626;--side:#1e1b4b}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--primary);text-decoration:none}
h1,h2,h3{margin:0 0 .4rem}
.muted{color:var(--muted)}.small{font-size:.85rem}.center{text-align:center}
.layout{display:flex;min-height:100vh}
.sidebar{width:260px;background:var(--side);color:#e5e7ff;padding:20px;display:flex;flex-direction:column;gap:14px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:#fff}
.logo{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--primary);color:#fff;font-weight:800;font-size:.85rem}
.brand.big{font-size:1.4rem;justify-content:center;color:var(--text)}
.brand.big .logo{width:44px;height:44px}
.points-pill{background:#8b7cf6;color:#fff;border-radius:999px;padding:10px 16px;text-align:center;font-weight:700}
.label{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:#a5a3d6;margin-top:8px}
.quick{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.qa{background:rgba(255,255,255,.08);color:#fff;text-align:center;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,.12)}
.qa.on{background:#fff;color:var(--side)}
nav{display:flex;flex-direction:column;gap:4px}
.nav-item{display:block;padding:10px;border-radius:10px;color:#e5e7ff}
.nav-item:hover{background:rgba(255,255,255,.08)}
.nav-item.on{background:rgba(255,255,255,.14)}
.nav-item strong{display:block;color:#fff}
.nav-item small{color:#b7b5e6}
.user-box{margin-top:auto;background:rgba(255,255,255,.07);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:6px}
.user-box span{font-size:.8rem;color:#b7b5e6;overflow:hidden;text-overflow:ellipsis}
.user-box .btn-outline{color:#fff;border-color:rgba(255,255,255,.4)}
.main{flex:1;min-width:0}
.topbar{background:#fff;padding:18px 28px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}
.topbar h1{font-size:1.4rem;margin:0}
.content{padding:24px 28px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;margin-bottom:20px}
.card.highlight{border-color:var(--primary)}
.card.success{border-color:var(--ok)}
.card h3{margin-bottom:8px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:20px}
.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.stat span{color:var(--muted);font-size:.9rem}
.stat strong{display:block;font-size:1.9rem;margin-top:6px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.btn{display:inline-block;border:1px solid var(--line);background:#fff;color:var(--text);padding:10px 16px;border-radius:10px;font-weight:600;cursor:pointer;font-size:.95rem;text-align:center;font-family:inherit}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--primary-dark)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.stack{display:flex;flex-direction:column;gap:14px}
.stack .btn-primary,.auth-card .btn-primary{width:100%}
label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.92rem}
label.check{flex-direction:row;align-items:center;font-weight:400}
input,select,textarea{font:inherit;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:transparent}
input:disabled{background:#f3f4f8}
textarea{width:100%}
.err{color:var(--bad);min-height:1em;margin:0;font-size:.9rem}
.ok{color:var(--ok);margin:0}
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;width:100%;max-width:420px;display:flex;flex-direction:column;gap:14px}
.auth-card h2{text-align:center;margin:0}
.auth-card p.muted{margin:0;text-align:center}
.survey-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.pts{background:#ede9fe;color:var(--primary);font-weight:700;padding:4px 10px;border-radius:999px;font-size:.85rem}
.survey.locked{opacity:.7}
.survey p{margin:6px 0 16px}
.question{border:none;padding:0;margin:0 0 22px;min-width:0}
legend{font-weight:700;margin-bottom:10px}
.req{color:var(--bad)}
.options{display:flex;flex-direction:column;gap:8px}
.option{display:flex;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-weight:400;cursor:pointer}
.option:has(input:checked){border-color:var(--primary);background:#f5f3ff}
.actions{display:flex;gap:10px;justify-content:flex-end;margin-top:10px}
.result{text-align:center;padding:40px}
.reward{display:flex;flex-direction:column;gap:10px;text-align:center;padding:0;overflow:hidden}
.reward-head{background:#eef0ff;padding:18px}
.reward-head h3{margin:0;font-size:1.1rem}
.reward-logo{height:110px;display:grid;place-items:center;font-size:3.5rem;font-weight:800;color:var(--primary)}
.reward p{margin:0 16px}
.reward .btn{margin:6px 16px 16px}
.tx{list-style:none;padding:0;margin:0}
.tx li{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line)}
.tx small{display:block;color:var(--muted)}
.pos{color:var(--ok);font-weight:700}
.neg{color:var(--bad);font-weight:700}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line);font-size:.92rem}
.badge{padding:3px 10px;border-radius:999px;font-size:.8rem;background:#fef3c7;color:#92400e}
.badge.paid{background:#dcfce7;color:#166534}
.badge.rejected{background:#fee2e2;color:#991b1b}
.profile-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin:0}
dt{color:var(--muted);font-size:.85rem}
dd{margin:0;font-weight:600}
.overlay{position:fixed;inset:0;background:rgba(15,15,40,.5);display:grid;place-items:center;padding:20px;z-index:50}
.modal{background:#fff;border-radius:18px;padding:26px;width:100%;max-width:440px;display:flex;flex-direction:column;gap:12px}
.modal h2{margin:0}
.toast{position:fixed;bottom:24px;right:24px;background:var(--text);color:#fff;padding:12px 18px;border-radius:12px;z-index:60;max-width:360px}
.toast.error{background:var(--bad)}
@media (max-width:860px){
  .layout{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static}
  .content{padding:16px}
  .grid-2{grid-template-columns:1fr}
  .profile-list{grid-template-columns:1fr}
}

/* account settings */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px 20px;margin-bottom:18px}
.narrow{max-width:420px}
.field{display:flex;flex-direction:column;gap:6px}
.field-label{font-weight:600;font-size:.92rem}
.radio-row{display:flex;gap:18px;align-items:center;min-height:44px}
.radio-row label{flex-direction:row;align-items:center;font-weight:400;gap:6px}
.radio-row input{width:auto}

/* one question per page */
.survey-page{max-width:720px;margin:0 auto}
.progress-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:.92rem;margin-bottom:10px}
.progress{height:8px;background:var(--line);border-radius:999px;overflow:hidden;margin-bottom:24px}
.progress div{height:100%;background:var(--primary);transition:width .3s}
.survey-page legend{font-size:1.1rem;line-height:1.4;margin-bottom:16px}