:root{
  --bg:#f5f5f7; --card:#fff; --ink:#1d1d1f; --sub:#6e6e73;
  --line:#e2e4ea; --blue:#0071e3; --blue-d:#0058b9;
  --radius:16px; --shadow:0 2px 18px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",Roboto,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:720px;margin:0 auto;padding:24px 16px 80px}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:28px;margin-bottom:18px}
h1{font-size:28px;margin:.2em 0 .4em;letter-spacing:-.02em}
h2{font-size:19px;margin:.2em 0 .8em;letter-spacing:-.01em}
.lead{color:var(--sub);font-size:16px}
.hint{color:var(--sub);font-size:14px;margin:.2em 0 1em}
.kicker{color:var(--blue);font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;margin:0}

/* home */
.hero{text-align:center}
.quadrant-preview{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0}
.q-cell{background:var(--bg);border-radius:12px;padding:14px}
.q-cell b{display:block;font-size:17px;margin-top:4px}
.q-cell small{color:var(--sub)}
.q-tag{font-size:11px;color:var(--blue);font-weight:600}
.meta-row{display:flex;gap:18px;justify-content:center;color:var(--sub);font-size:13px;flex-wrap:wrap;margin-bottom:18px}
.preface{background:#f0f7ff;border-radius:12px;padding:16px;text-align:left;font-size:14px;color:#334;margin-bottom:22px}
.disclaimer{color:var(--sub);font-size:12px;margin-top:20px;text-align:left;line-height:1.5}

/* buttons */
.btn-primary{display:inline-block;background:var(--blue);color:#fff;border:none;
  padding:14px 32px;border-radius:980px;font-size:16px;font-weight:500;cursor:pointer;
  text-decoration:none;transition:.2s}
.btn-primary:hover{background:var(--blue-d)}
.btn-primary:disabled{opacity:.5;cursor:default}
.btn-secondary{display:inline-block;background:var(--bg);color:var(--ink);
  padding:12px 28px;border-radius:980px;text-decoration:none;font-size:15px}

/* form fields */
.field{display:block;margin-bottom:16px}
.field>span{display:block;font-size:14px;margin-bottom:6px;font-weight:500}
input[type=text],textarea{width:100%;padding:11px 13px;border:1px solid var(--line);
  border-radius:10px;font-size:15px;font-family:inherit;background:#fafafa}
textarea{resize:vertical}
.opt-row{display:flex;gap:10px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:5px;background:var(--bg);
  padding:8px 16px;border-radius:980px;cursor:pointer;font-size:14px;border:1px solid transparent}
.chip:has(input:checked){background:#e3f0ff;border-color:var(--blue);color:var(--blue-d)}

/* trade-off questions */
.q-block{padding:18px 0;border-top:1px solid var(--line)}
.q-block:first-of-type{border-top:none}
.q-axes{font-size:14px;color:var(--sub);margin:0 0 6px}
.badge{background:#eef;color:#55c;padding:2px 10px;border-radius:980px;font-size:12px}
.q-scenario{font-size:15px;margin:0 0 14px;color:#222}
.spectrum-ends{display:flex;gap:12px;margin-bottom:12px}
.end{flex:1;background:var(--bg);border-radius:10px;padding:12px;font-size:13px;line-height:1.5}
.end-a{border-left:3px solid var(--blue)}
.end-b{border-left:3px solid #ff9500}
.spectrum-opts{display:flex;gap:6px;justify-content:space-between}
.spectrum-opts label{flex:1;text-align:center;cursor:pointer}
.spectrum-opts input{display:none}
.spectrum-opts span{display:block;padding:9px 4px;background:var(--bg);border-radius:9px;
  font-size:12px;border:1.5px solid transparent;transition:.15s}
.spectrum-opts input:checked+span{background:#e3f0ff;border-color:var(--blue);color:var(--blue-d);font-weight:600}

/* likert */
.likert .q-text{font-size:15px;margin:0 0 10px}
.likert-opts{display:flex;gap:8px}
.likert-opts label{flex:1;text-align:center;cursor:pointer}
.likert-opts input{display:none}
.likert-opts span{display:block;padding:10px 0;background:var(--bg);border-radius:9px;
  font-size:15px;border:1.5px solid transparent;transition:.15s}
.likert-opts input:checked+span{background:var(--blue);color:#fff;border-color:var(--blue);font-weight:600}

/* time allocation */
.time-grid{display:flex;flex-direction:column;gap:10px}
.time-row{display:flex;align-items:center;gap:12px}
.time-label{flex:1}
.time-label b{display:block;font-size:14px}
.time-label small{color:var(--sub);font-size:12px}
.time-input{display:flex;align-items:center;gap:4px;color:var(--sub)}
.pct{width:64px;padding:9px;border:1px solid var(--line);border-radius:9px;text-align:center;font-size:15px}
.time-total{margin-top:14px;font-weight:600;text-align:right}
.ok{color:#34c759}.warn{color:#ff9500;font-size:13px;font-weight:400}

/* submit */
.submit-bar{text-align:center;margin-top:24px}
.err{color:#ff3b30;font-size:14px;margin-top:10px}

/* report */
.report-head{text-align:center}
#radar{margin:10px 0}
.legend{display:flex;gap:16px;justify-content:center;font-size:13px}
.lg{display:inline-flex;align-items:center;gap:5px}
.lg::before{content:'';width:12px;height:12px;border-radius:3px;display:inline-block}
.lg-skill::before{background:#0071e3}.lg-incl::before{background:#ff9500}.lg-time::before{background:#34c759}
.bar-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.bar-label{width:90px;font-size:14px;flex-shrink:0}
.bar-label small{color:var(--sub);font-size:11px}
.bar-track{flex:1;background:var(--bg);border-radius:980px;height:12px;overflow:hidden}
.bar-fill{height:100%;background:var(--blue);border-radius:980px}
.bar-fill.time{background:#34c759}.bar-fill.team{background:#a0a0a8}.bar-fill.noise{background:#ff9500}
.bar-val{width:48px;text-align:right;font-size:14px;font-variant-numeric:tabular-nums}
.bar-row.muted{opacity:.7}
.dim-desc{padding:12px 0;border-top:1px solid var(--line)}
.dim-desc:first-child{border-top:none}
.dim-desc b{font-size:15px}
.dim-desc p{margin:4px 0 0;font-size:14px;color:#444}
.highlight{background:#fffbf0;border:1px solid #ffe7b0}
.mismatch{font-size:14px;margin:8px 0;color:#333}

/* admin */
.data-table{width:100%;border-collapse:collapse;font-size:13px}
.data-table th,.data-table td{padding:8px 6px;border-bottom:1px solid var(--line);text-align:left}
.data-table th{color:var(--sub);font-weight:500}
.data-table .fb{max-width:160px;color:#555;font-size:12px}