:root{
  --bg:#F6F8F7;
  --surface:#FFFFFF;
  --ink:#22303A;
  --ink-soft:#6B7B84;
  --line:#E4EAE8;

  --green:#3FBF7F;
  --green-dark:#2E9C67;
  --green-bg:#E1F7EC;

  --blue:#1CA7E0;
  --blue-dark:#1487B8;
  --blue-bg:#E1F4FC;

  --red:#F0563F;
  --red-dark:#D63F2A;
  --red-bg:#FDE7E3;

  --gold:#F5A623;
  --gold-dark:#CE8A16;
  --gold-bg:#FDF0DA;

  --purple:#8C6BE0;
  --purple-dark:#6E4FC0;

  --accent-grad:linear-gradient(135deg, var(--blue), var(--green));
  --shadow-sm:0 1px 2px rgba(20,35,45,.05), 0 2px 8px rgba(20,35,45,.06);
  --shadow-md:0 6px 20px rgba(20,35,45,.10);
  --shadow-btn:0 10px 22px rgba(28,167,224,.28);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#101619; --surface:#1A2226; --ink:#EEF3F2; --ink-soft:#9CACB2; --line:#2A3438;
    --green-bg:#12321F; --blue-bg:#0E2A38; --red-bg:#3A1A14; --gold-bg:#332A10;
    --shadow-sm:0 1px 2px rgba(0,0,0,.3); --shadow-md:0 6px 20px rgba(0,0,0,.35); --shadow-btn:0 10px 22px rgba(0,0,0,.4);
  }
}
:root[data-theme="dark"]{
  --bg:#101619; --surface:#1A2226; --ink:#EEF3F2; --ink-soft:#9CACB2; --line:#2A3438;
  --green-bg:#12321F; --blue-bg:#0E2A38; --red-bg:#3A1A14; --gold-bg:#332A10;
  --shadow-sm:0 1px 2px rgba(0,0,0,.3); --shadow-md:0 6px 20px rgba(0,0,0,.35); --shadow-btn:0 10px 22px rgba(0,0,0,.4);
}

*{box-sizing:border-box;}
html{color-scheme:light dark; overscroll-behavior-y:contain;}
html.font-large .wrap{zoom:1.18;}
html.font-xlarge .wrap{zoom:1.36;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Nunito", "Segoe UI", Verdana, sans-serif;
  padding-inline:20px;
  padding-block:28px;
  min-height:100vh;
}
.wrap{max-width:640px; margin:0 auto; display:flex; flex-direction:column; gap:20px;}
h1,h2,h3{text-wrap:balance; margin:0; font-family:inherit;}

/* ---------- top bar ---------- */
.topbar{
  display:flex; align-items:center; gap:12px;
  position:sticky; top:0; z-index:10;
  background:var(--bg); padding-block:10px; margin-inline:-20px; padding-inline:20px;
}
.progress-track{
  flex:1; height:14px; background:var(--line); border-radius:999px; overflow:hidden;
}
.progress-fill{
  height:100%; background:var(--accent-grad); border-radius:999px;
  transition:width .35s ease;
}
.settings-link{
  width:34px; height:34px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  font-size:16px; color:var(--ink-soft);
  background:var(--surface); border:1.5px solid var(--line); border-radius:11px;
  cursor:pointer; box-shadow:var(--shadow-sm);
  transition:transform .12s ease, color .15s ease;
}
.settings-link:hover{color:var(--blue-dark); transform:rotate(-25deg);}

/* ---------- brand / hero ---------- */
.brand-row{display:flex; align-items:center; gap:10px;}
.font-size-control{margin-left:auto; display:flex; gap:4px; flex-shrink:0;}
.font-size-control button{
  font-family:inherit; cursor:pointer; border:1.5px solid var(--line);
  background:var(--surface); color:var(--ink-soft); border-radius:10px;
  width:34px; height:30px; font-weight:800;
  box-shadow:var(--shadow-sm);
  transition:transform .1s ease;
}
.font-size-control button[data-size="large"]{font-size:16px;}
.font-size-control button[data-size="xlarge"]{font-size:19px;}
.font-size-control button.active{background:var(--blue-bg); border-color:var(--blue); color:var(--blue-dark);}
.font-size-control button:active{transform:scale(.92);}
.brand-mark{
  width:44px; height:auto; flex-shrink:0;
}
.brand-name{font-weight:800; font-size:15px; letter-spacing:.02em;}
.brand-sub{font-size:12px; color:var(--ink-soft); font-weight:700; text-transform:uppercase; letter-spacing:.08em;}

header{
  background:var(--surface);
  border:1.5px solid var(--line);
  border-radius:22px;
  padding:24px 24px 26px;
  display:flex; flex-direction:column; gap:18px;
  box-shadow:var(--shadow-sm);
}
h1{font-size:clamp(24px,5vw,32px); font-weight:800; line-height:1.15; color:var(--ink);}
.lede{color:var(--ink-soft); font-size:15px; line-height:1.55; font-weight:600;}

.field{display:flex; flex-direction:column; gap:10px;}
.field-label{
  font-size:12px; font-weight:800; letter-spacing:.08em; text-transform:uppercase; color:var(--ink-soft);
}
.choice-row{display:flex; gap:8px; flex-wrap:wrap;}
.choice-btn{
  font-family:inherit; cursor:pointer;
  border:1.5px solid var(--line);
  background:var(--surface); color:var(--ink);
  border-radius:999px; padding:9px 18px;
  font-size:14px; font-weight:800;
  box-shadow:var(--shadow-sm);
  transition:transform .1s ease, background .15s ease;
}
.choice-btn.active{background:var(--blue-bg); border-color:var(--blue); color:var(--blue-dark);}
.choice-btn:active{transform:scale(.96);}
.choice-btn:focus-visible{outline:3px solid var(--blue); outline-offset:2px;}

.mode-cards{display:flex; gap:12px; flex-wrap:wrap;}
.mode-card{
  flex:1 1 220px; text-align:left; cursor:pointer;
  border:1.5px solid var(--line);
  background:var(--surface);
  border-radius:16px; padding:14px 16px;
  display:flex; flex-direction:column; gap:5px;
  font-family:inherit;
  box-shadow:var(--shadow-sm);
  transition:transform .1s ease, border-color .15s ease;
}
.mode-card:active{transform:scale(.98);}
.mode-card.active{background:var(--green-bg); border-color:var(--green);}
.mode-card b{font-size:15px; font-weight:800;}
.mode-card span{font-size:12.5px; color:var(--ink-soft); line-height:1.4; font-weight:600;}
.mode-card:focus-visible{outline:3px solid var(--green); outline-offset:2px;}

.cta-row{display:flex; gap:10px; flex-wrap:wrap;}

/* ---------- buttons ---------- */
button.btn{
  font-family:inherit; cursor:pointer;
  border:none;
  background:var(--accent-grad); color:#fff;
  padding:14px 26px; border-radius:14px;
  font-weight:800; font-size:14.5px; letter-spacing:.01em;
  box-shadow:var(--shadow-btn);
  transition:transform .12s ease, box-shadow .12s ease;
}
button.btn:hover{transform:translateY(-1px);}
button.btn:active{transform:translateY(1px) scale(.98); box-shadow:var(--shadow-sm);}
button.btn:focus-visible{outline:3px solid var(--gold); outline-offset:2px;}
button.btn:disabled{opacity:.4; cursor:not-allowed; box-shadow:none;}
button.btn.secondary{
  background:var(--surface); color:var(--blue-dark);
  border:1.5px solid var(--line); box-shadow:var(--shadow-sm);
}

/* ---------- lesson (education) cards ---------- */
.lesson-card{
  background:var(--surface); border:1.5px solid var(--line); border-radius:22px;
  padding:28px 24px; display:flex; flex-direction:column; gap:14px; align-items:flex-start;
  box-shadow:var(--shadow-md);
  animation:pop .3s cubic-bezier(.3,1.4,.5,1);
}
@keyframes pop{ from{opacity:0; transform:scale(.94);} to{opacity:1; transform:scale(1);} }
@media (prefers-reduced-motion: reduce){ .lesson-card{animation:none;} }
.lesson-icon{
  width:64px; height:64px; border-radius:18px;
  background:var(--gold-bg); display:flex; align-items:center; justify-content:center;
  font-size:32px;
}
.lesson-title{font-size:22px; font-weight:800;}
.lesson-body{font-size:15px; line-height:1.6; color:var(--ink-soft); font-weight:600;}
.lesson-nav{display:flex; justify-content:space-between; gap:10px;}

/* ---------- progress dots (quiz) ---------- */
.tabs{display:flex; gap:6px;}
.tab-dot{
  flex:1; height:9px; border-radius:99px; background:var(--line);
}
.tab-dot.current{background:var(--blue);}
.tab-dot.done-safe{background:var(--green);}
.tab-dot.done-risk{background:var(--red);}
.tab-dot.done-neutral{background:var(--ink-soft); opacity:.5;}

/* ---------- scenario card ---------- */
.case-card{
  background:var(--surface); border:1.5px solid var(--line); border-radius:22px;
  padding:22px; display:flex; flex-direction:column; gap:18px;
  box-shadow:var(--shadow-md);
  animation:pop .3s cubic-bezier(.3,1.4,.5,1);
}
@media (prefers-reduced-motion: reduce){ .case-card{animation:none;} }

.case-meta{
  font-size:12px; font-weight:800; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-soft);
}

.phone{
  background:var(--bg); border:1.5px solid var(--line); border-radius:16px;
  padding:14px 14px 16px; display:flex; flex-direction:column; gap:10px;
}
.phone-head{
  display:flex; align-items:center; gap:9px; font-size:13px; font-weight:800; color:var(--ink-soft);
  padding-bottom:10px; border-bottom:1.5px solid var(--line);
}
.avatar{
  width:30px; height:30px; border-radius:50%; flex-shrink:0;
  background:linear-gradient(135deg, var(--purple), var(--blue));
}
.phone-head .who{display:flex; flex-direction:column; gap:1px;}
.phone-head .who b{color:var(--ink); font-size:14px;}
.phone-head .who span{font-size:11.5px; font-weight:700; color:var(--ink-soft);}

.unknown-banner{
  display:flex; align-items:flex-start; gap:8px;
  background:var(--purple); color:#fff;
  border-radius:12px; padding:10px 12px; font-size:12.5px; line-height:1.4; font-weight:700;
}
.unknown-banner svg{flex-shrink:0; margin-top:1px; opacity:.9;}

.bubble{
  background:var(--surface); border:1.5px solid var(--line);
  border-radius:4px 16px 16px 16px;
  padding:11px 14px 9px; font-size:14px; line-height:1.5;
  max-width:88%; align-self:flex-start;
  display:flex; flex-direction:column; gap:4px;
  white-space:pre-line; font-weight:600;
  box-shadow:var(--shadow-sm);
}
.bubble .msg-time{align-self:flex-end; font-size:10.5px; color:var(--ink-soft); font-weight:700;}

.prompt-q{font-size:17px; font-weight:800;}

.options{display:flex; flex-direction:column; gap:10px;}
.opt{
  font-family:inherit; cursor:pointer; text-align:left;
  border:1.5px solid var(--line);
  background:var(--surface);
  border-radius:14px; padding:13px 14px;
  font-size:14.5px; font-weight:700; color:var(--ink);
  display:flex; align-items:center; gap:10px;
  box-shadow:var(--shadow-sm);
  transition:transform .1s ease, border-color .15s ease, box-shadow .15s ease;
}
.opt:hover:not(:disabled){border-color:var(--blue); box-shadow:var(--shadow-md);}
.opt:active:not(:disabled){transform:scale(.98);}
.opt:disabled{cursor:default;}
.opt .tag{
  font-size:12px; font-weight:800;
  border:1.5px solid var(--line); border-radius:8px; padding:3px 8px;
  color:var(--ink-soft); flex-shrink:0;
}
.opt.picked-safe{background:var(--green-bg); border-color:var(--green); color:var(--green-dark);}
.opt.picked-safe .tag{border-color:var(--green); color:var(--green-dark);}
.opt.picked-risk{background:var(--red-bg); border-color:var(--red); color:var(--red-dark);}
.opt.picked-risk .tag{border-color:var(--red); color:var(--red-dark);}
.opt.reveal-safe:not(.picked-safe):not(.picked-risk){border-color:var(--green); border-style:dashed;}
.opt.picked-neutral{background:var(--blue-bg); border-color:var(--blue);}

/* ---------- feedback banner ---------- */
.feedback-banner{
  border-radius:16px; padding:16px 18px;
  display:flex; flex-direction:column; gap:10px;
  animation:slideup .25s ease;
}
@keyframes slideup{ from{opacity:0; transform:translateY(10px);} to{opacity:1; transform:none;} }
.feedback-banner.safe{background:var(--green-bg);}
.feedback-banner.risk{background:var(--red-bg);}
.feedback-banner.neutral{background:var(--blue-bg);}
.feedback-head{display:flex; align-items:center; gap:10px; font-size:16px; font-weight:800;}
.feedback-banner.safe .feedback-head{color:var(--green-dark);}
.feedback-banner.risk .feedback-head{color:var(--red-dark);}
.feedback-banner.neutral .feedback-head{color:var(--blue-dark);}
.feedback-head .feedback-icon{
  width:30px; height:30px; border-radius:50%; flex-shrink:0;
  display:flex; align-items:center; justify-content:center; font-size:16px; color:#fff;
}
.feedback-banner.safe .feedback-icon{background:var(--green);}
.feedback-banner.risk .feedback-icon{background:var(--red);}
.feedback-banner.neutral .feedback-icon{background:var(--blue);}
.category-pill{
  display:inline-block; font-size:11px; font-weight:800; letter-spacing:.05em; text-transform:uppercase;
  border-radius:999px; padding:4px 10px; background:rgba(255,255,255,.65); color:var(--ink); align-self:flex-start;
}
.explain{font-size:14px; line-height:1.55; color:var(--ink); font-weight:600;}
.explain b{font-weight:800;}
.recorded-note{font-size:13.5px; color:var(--blue-dark); font-weight:700;}

.next-row{display:flex; justify-content:flex-end;}
.next-row button.btn{
  background:var(--blue); box-shadow:0 10px 22px rgba(28,167,224,.3);
}

/* ---------- results ---------- */
.results{display:flex; flex-direction:column; gap:16px; align-items:center; text-align:center;}
.badge{
  width:104px; height:104px; border-radius:50%; border:none;
  display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:26px;
  background:var(--gold-bg); color:var(--gold-dark);
  box-shadow:var(--shadow-md);
  animation:pop .35s cubic-bezier(.3,1.4,.5,1);
}
.recap{width:100%; display:flex; flex-direction:column; gap:10px; text-align:left;}
.recap-row{
  display:flex; flex-direction:column; gap:6px;
  font-size:13.5px; padding:12px 14px; border-radius:14px;
  border:1.5px solid var(--line); background:var(--surface);
  box-shadow:var(--shadow-sm);
}
.recap-row .recap-head{display:flex; align-items:center; gap:8px; font-weight:800;}
.recap-row .recap-explain{color:var(--ink-soft); font-size:13px; line-height:1.5; font-weight:600;}
.recap-row.risk{border-color:var(--red); background:var(--red-bg);}
.recap-row.safe{border-color:var(--green); background:var(--green-bg);}

.disclaimer-note{
  font-size:13px; line-height:1.55; color:var(--ink-soft); font-weight:600;
  background:var(--gold-bg); border-radius:14px; padding:12px 14px; max-width:56ch;
}
.sources-note{font-size:11.5px; line-height:1.5; color:var(--ink-soft); font-weight:600; text-align:center;}

.share-card{
  width:100%; display:flex; flex-direction:column; gap:10px; align-items:center;
  background:var(--bg); border:1.5px solid var(--line); border-radius:18px; padding:18px;
}
.share-card h3{font-size:16px; font-weight:800;}
#share-canvas{width:100%; max-width:340px; aspect-ratio:1/1; border-radius:16px; box-shadow:var(--shadow-md);}

.crosslink{text-align:center; font-size:13px; font-weight:700; color:var(--blue-dark);}
.crosslink a{color:inherit;}

footer{text-align:center; font-size:12px; color:var(--ink-soft); padding-block:6px; font-weight:600;}

@media (max-width:420px){
  header{padding:20px 18px;}
  .lesson-card{padding:22px 18px;}
}

[hidden]{display:none !important;}