/* ════════════════════════════════════
   MARKETING QUIZ — v3 (ultra-simple)
   ════════════════════════════════════ */
:root {
  --bg:#0d1117;  --bg2:#161b22;  --bg3:#21262d;  --card:#1c2129;
  --border:#30363d;
  --primary:#7c6dfa;  --primary-dim:rgba(124,109,250,.13);
  --green:#22c55e;    --green-dim:rgba(34,197,94,.13);
  --red:#ef4444;      --red-dim:rgba(239,68,68,.11);
  --yellow:#f59e0b;
  --text:#e6edf3;  --text2:#8b949e;  --text3:#484f58;
  --radius:14px;   --r2:10px;  --r3:8px;
  --ch6:#7c6dfa; --ch7:#06b6d4; --ch8:#10b981; --ch9:#f59e0b;
  --ch10:#ef4444; --ch11:#8b5cf6; --ch12:#ec4899; --ch13:#14b8a6; --ch14:#84cc16;
  --safe-b:env(safe-area-inset-bottom,0px);
  --nav-h:68px;
}
[data-theme="light"] {
  --bg:#f0f4f8; --bg2:#fff; --bg3:#e8edf2; --card:#fff;
  --border:#d1d9e0; --text:#1a1f2e; --text2:#52606d; --text3:#9aa5b4;
}
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { -webkit-text-size-adjust:100%; }
body {
  background:var(--bg); color:var(--text);
  font-family:-apple-system,'SF Pro Display','Segoe UI',system-ui,sans-serif;
  min-height:100vh; overflow-x:hidden; -webkit-font-smoothing:antialiased;
}
button { font-family:inherit; cursor:pointer; -webkit-tap-highlight-color:transparent; }

/* ── HEADER ── */
.app-header {
  position:sticky; top:0; z-index:100;
  background:var(--bg2); border-bottom:1px solid var(--border);
  padding:0 16px; height:52px;
  display:flex; align-items:center; gap:10px;
}
.hdr-logo { font-size:16px; font-weight:800;
  background:linear-gradient(135deg,var(--primary),#38bdf8);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
.hdr-spacer { flex:1; }
.hdr-pill { background:var(--bg3); border:1px solid var(--border);
  border-radius:20px; padding:4px 11px; font-size:12px; color:var(--text2); }
.hdr-pill strong { color:var(--primary); }
.hdr-btn { background:var(--bg3); border:1px solid var(--border); border-radius:8px;
  width:36px; height:36px; display:flex; align-items:center; justify-content:center;
  font-size:16px; flex-shrink:0; }

/* ── VIEWS ── */
.view { display:none; }
.view.active { display:block; animation:fu .2s ease; }
@keyframes fu { from{opacity:0;transform:translateY(7px)} to{opacity:1;transform:none} }

/* ════════════════════════════════════
   HOME
   ════════════════════════════════════ */
.home-wrap { max-width:600px; margin:0 auto; padding:20px 16px 80px; }

/* progress bar */
.prog-row {
  display:flex; align-items:center; gap:10px; margin-bottom:20px;
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--r2); padding:12px 14px;
}
.prog-label { font-size:13px; color:var(--text2); flex:1; }
.prog-label strong { color:var(--text); }
.prog-track { width:80px; height:5px; background:var(--bg3); border-radius:3px; overflow:hidden; }
.prog-fill  { height:100%; border-radius:3px; background:var(--primary); transition:.4s; }

/* random section card */
.home-card {
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); padding:20px; margin-bottom:12px;
}
.home-card-title {
  font-size:15px; font-weight:700; margin-bottom:14px; display:flex; align-items:center; gap:8px;
}
/* count pills */
.count-row { display:flex; gap:8px; flex-wrap:wrap; margin-bottom:16px; }
.cp {
  flex:1; min-width:44px; padding:10px 4px; text-align:center;
  background:var(--bg3); border:1.5px solid var(--border);
  border-radius:var(--r2); font-size:15px; font-weight:700; color:var(--text2);
  transition:border-color .12s, background .12s, color .12s;
}
.cp.sel {
  background:var(--primary-dim); border-color:var(--primary); color:var(--primary);
}
.cp:active { transform:scale(.94); }

.start-btn {
  width:100%; padding:15px; border:none; border-radius:var(--r2);
  background:var(--primary); color:#fff; font-size:15px; font-weight:700;
  box-shadow:0 4px 18px rgba(124,109,250,.4); transition:transform .12s,opacity .12s;
}
.start-btn:active { transform:scale(.97); opacity:.9; }

/* divider */
.divider {
  display:flex; align-items:center; gap:10px; margin:4px 0 12px;
  font-size:12px; color:var(--text3);
}
.divider::before,.divider::after { content:''; flex:1; height:1px; background:var(--border); }

/* all-80 button */
.all80-btn {
  width:100%; padding:16px 18px; border:none; border-radius:var(--radius);
  background:linear-gradient(135deg,#10b981,#059669);
  color:#fff; font-size:15px; font-weight:700;
  display:flex; align-items:center; gap:12px;
  box-shadow:0 4px 16px rgba(16,185,129,.35); transition:transform .12s,opacity .12s;
}
.all80-btn:active { transform:scale(.97); opacity:.9; }
.all80-txt { flex:1; text-align:left; }
.all80-sub { font-size:12px; opacity:.75; font-weight:500; margin-top:2px; }

/* ════════════════════════════════════
   LEARN VIEW
   ════════════════════════════════════ */
.q-progress { height:3px; background:var(--bg3); }
.q-progress-fill { height:100%; transition:.3s; }

.q-wrap { max-width:600px; margin:0 auto; padding:14px 16px calc(var(--nav-h) + var(--safe-b) + 14px); }

/* top bar */
.q-topbar { display:flex; align-items:center; gap:8px; margin-bottom:14px; }
.back-lnk {
  background:var(--bg3); border:1px solid var(--border); border-radius:8px;
  padding:7px 10px; color:var(--text2); font-size:13px; white-space:nowrap;
}
.back-lnk:active { opacity:.7; }
.ch-badge {
  border-radius:20px; padding:4px 10px; font-size:11px; font-weight:700;
  border:1px solid; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:160px;
}
.topbar-spacer { flex:1; }
.finish-btn {
  background:var(--bg3); border:1px solid var(--border); border-radius:8px;
  padding:7px 11px; color:var(--text2); font-size:13px; white-space:nowrap;
}
.finish-btn:active { opacity:.7; }

/* question card */
.q-card {
  background:var(--card); border:1px solid var(--border);
  border-radius:var(--radius); padding:20px 18px; margin-bottom:12px;
}
.q-meta { font-size:11px; font-weight:700; color:var(--text3);
  text-transform:uppercase; letter-spacing:.05em; margin-bottom:10px; }
.q-text { font-size:16px; font-weight:600; line-height:1.6; }
@media(min-width:480px){ .q-text { font-size:17px; } }

/* options */
.options { display:flex; flex-direction:column; gap:9px; }
.opt {
  background:var(--bg3); border:1.5px solid var(--border);
  border-radius:var(--r2); padding:14px; cursor:pointer;
  display:flex; gap:12px; align-items:flex-start; min-height:52px;
  transition:border-color .1s, background .1s;
}
.opt:not(.locked):active { transform:scale(.98); }
.opt:not(.locked):hover  { border-color:var(--primary); background:var(--primary-dim); }
.opt-letter {
  width:28px; height:28px; border-radius:7px; background:var(--bg2);
  border:1px solid var(--border); display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:13px; flex-shrink:0; margin-top:1px;
}
.opt-text  { font-size:14px; line-height:1.5; flex:1; padding-top:3px; }
.opt.correct { border-color:var(--green); background:var(--green-dim); }
.opt.correct .opt-letter { background:rgba(34,197,94,.2); border-color:var(--green); color:var(--green); }
.opt.wrong   { border-color:var(--red); background:var(--red-dim); }
.opt.wrong   .opt-letter { background:rgba(239,68,68,.15); border-color:var(--red); color:var(--red); }
.opt.dimmed  { opacity:.32; }
.opt.locked  { cursor:default; }

/* ── BOTTOM NAV ── */
.bottom-nav {
  position:fixed; bottom:0; left:0; right:0; z-index:200;
  background:var(--bg2); border-top:1px solid var(--border);
  padding:10px 16px calc(10px + var(--safe-b));
  display:flex; align-items:center; gap:8px;
}
.bnav-prev, .bnav-next {
  border:none; border-radius:var(--r2); height:50px; padding:0 16px;
  font-weight:700; font-size:15px; display:flex; align-items:center; gap:6px;
  transition:opacity .12s, transform .12s; flex-shrink:0;
}
.bnav-prev:active,.bnav-next:active { transform:scale(.94); }
.bnav-prev { background:var(--bg3); border:1px solid var(--border); color:var(--text2); min-width:50px; justify-content:center; }
.bnav-prev:disabled { opacity:.22; cursor:default; }
.bnav-counter { flex:1; text-align:center; font-size:14px; font-weight:700; color:var(--text2); }
.bnav-next { background:var(--bg3); border:1px solid var(--border); color:var(--text2); min-width:50px; justify-content:center; }
.bnav-next.active-next {
  background:var(--primary); color:#fff; border-color:transparent;
  box-shadow:0 4px 16px rgba(124,109,250,.45); flex:1; font-size:15px;
}

/* ════════════════════════════════════
   RESULTS
   ════════════════════════════════════ */
.res-wrap { max-width:600px; margin:0 auto; padding:24px 16px 80px; }
.score-ring { width:130px; height:130px; margin:0 auto 16px; position:relative; }
.score-ring svg { width:100%; height:100%; transform:rotate(-90deg); }
.ring-bg   { fill:none; stroke:var(--bg3); stroke-width:8; }
.ring-fill { fill:none; stroke-width:8; stroke-linecap:round;
  transition:stroke-dashoffset .8s cubic-bezier(.4,0,.2,1); }
.score-center { position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); text-align:center; }
.score-pct { font-size:28px; font-weight:800; }
.score-lbl { font-size:12px; color:var(--text3); }
.res-title { text-align:center; font-size:20px; font-weight:800; margin-bottom:4px; }
.res-sub   { text-align:center; font-size:14px; color:var(--text2); margin-bottom:20px; }
.ch-rows { display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
.ch-row {
  background:var(--card); border:1px solid var(--border); border-radius:var(--r2);
  padding:12px 14px; display:flex; align-items:center; gap:10px;
}
.ch-row-ico  { font-size:20px; flex-shrink:0; }
.ch-row-name { flex:1; font-size:13px; font-weight:600; }
.ch-row-bar  { width:56px; height:5px; background:var(--bg3); border-radius:3px; overflow:hidden; flex-shrink:0; }
.ch-row-fill { height:100%; border-radius:3px; }
.ch-row-pct  { font-size:13px; font-weight:700; min-width:34px; text-align:right; }
.res-btns { display:flex; flex-direction:column; gap:8px; }
.res-btn { padding:14px; border:none; border-radius:var(--r2); font-size:15px; font-weight:700; }

/* ── section label ── */
.section-label {
  font-size:11px; font-weight:700; color:var(--text3); text-transform:uppercase;
  letter-spacing:.07em; margin:16px 0 10px; display:flex; align-items:center; gap:8px;
}
.section-label::after { content:''; flex:1; height:1px; background:var(--border); }

/* ── chapter grid ── */
.ch-grid { display:grid; grid-template-columns:1fr 1fr; gap:9px; margin-bottom:8px; }
@media(min-width:480px){ .ch-grid { grid-template-columns:repeat(3,1fr); } }

.ch-card {
  background:var(--card); border:1px solid var(--border); border-radius:var(--radius);
  padding:14px 12px; cursor:pointer; border-top:3px solid var(--clr,var(--primary));
  transition:transform .12s;
}
.ch-card:active { transform:scale(.95); }
.ch-card .ce { font-size:22px; display:block; margin-bottom:6px; }
.ch-card .ct { font-size:10px; font-weight:800; color:var(--clr,var(--primary));
  text-transform:uppercase; letter-spacing:.04em; margin-bottom:3px; }
.ch-card .cs { font-size:12px; font-weight:600; color:var(--text); line-height:1.3; margin-bottom:8px; }
.ch-pbar  { height:3px; background:var(--bg3); border-radius:2px; }
.ch-pfill { height:100%; border-radius:2px; background:var(--clr,var(--primary)); transition:.4s; }
.ch-meta  { font-size:11px; color:var(--text3); margin-top:5px; }

/* ── misc ── */
::-webkit-scrollbar { width:3px; }
::-webkit-scrollbar-thumb { background:var(--bg3); border-radius:2px; }
@media(max-width:360px){ .q-text { font-size:15px; } .cp { min-width:36px; font-size:14px; } }