/* SEA & CSEC Study Hub — shared styles. Branch palette, per CLAUDE.md. */
:root{
  --bg:#07131f; --bg2:#0d2137; --card:#163553; --card2:#1b3d61;
  --gold:#efc24b; --gold2:#c9942c; --text:#edf4fb; --muted:#a9bbcf;
  --line:rgba(255,255,255,.08); --teal:#00CFEA; --teal2:#00A8C5;
  --good:#4ade80; --warn:#efc24b; --bad:#f87171;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'DM Sans',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%,rgba(0,207,234,.08),transparent),
    linear-gradient(180deg,var(--bg) 0%,var(--bg2) 50%,var(--bg) 100%);
  background-attachment:fixed;
}
a{color:inherit}
h1,h2,h3,h4{font-family:'Montserrat',system-ui,sans-serif;line-height:1.2}

.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.narrow{max-width:640px}

/* ---- masthead. The mark is logo-mark.png and nothing else. ---- */
.mark{border-radius:13px;overflow:hidden;background:#07131f;display:grid;place-items:center}
.mark img{width:100%;height:100%;display:block}
header.top{
  position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);
  background:rgba(7,19,31,.86);border-bottom:1px solid var(--line);
}
.topbar{display:flex;align-items:center;gap:14px;padding:12px 0}
.topbar .mark{width:42px;height:42px;flex:none}
.brandtext{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brandtext b{font-family:'Montserrat',sans-serif;font-weight:800;font-size:.98rem;letter-spacing:.2px}
.brandtext span{font-size:.72rem;color:var(--muted);letter-spacing:.4px;text-transform:uppercase}
.topnav{margin-left:auto;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.topnav a{
  font-size:.82rem;color:var(--muted);text-decoration:none;padding:7px 11px;border-radius:9px;
  border:1px solid transparent;white-space:nowrap;
}
.topnav a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.topnav a.on{color:var(--bg);background:linear-gradient(135deg,var(--gold),var(--gold2));font-weight:700}

/* ---- page furniture ---- */
.page{padding:30px 0 70px}
.pagehead{margin-bottom:22px}
.pagehead h1{font-size:clamp(1.5rem,3.6vw,2.15rem);font-weight:800}
.pagehead p{color:var(--muted);margin-top:6px;max-width:62ch;font-size:.95rem}
.eyebrow{
  font-size:.7rem;letter-spacing:1.6px;text-transform:uppercase;color:var(--teal);
  font-weight:700;margin-bottom:7px;
}
.section-label{
  font-family:'Montserrat',sans-serif;font-size:.74rem;letter-spacing:1.5px;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin:30px 0 12px;
}

/* ---- cards ---- */
.card{
  background:linear-gradient(160deg,var(--card),var(--card2));
  border:1px solid var(--line);border-radius:16px;padding:20px;
}
.card h3{font-size:1.02rem;font-weight:700;margin-bottom:5px}
.card p.sub{color:var(--muted);font-size:.87rem;line-height:1.55}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(178px,1fr))}

/* ---- buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:'Montserrat',sans-serif;font-weight:700;font-size:.88rem;
  padding:11px 20px;border-radius:11px;border:none;cursor:pointer;text-decoration:none;
  background:linear-gradient(135deg,var(--gold),var(--gold2));color:#07131f;
  transition:transform .15s ease,box-shadow .15s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(239,194,75,.24)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn.ghost:hover{background:rgba(255,255,255,.06);box-shadow:none}
.btn.teal{background:linear-gradient(135deg,var(--teal),var(--teal2));color:#07131f}
.btn.sm{padding:8px 14px;font-size:.8rem}
.btn.wide{width:100%}

/* ---- forms ---- */
label.fl{display:block;font-size:.78rem;color:var(--muted);margin:0 0 6px;font-weight:600;letter-spacing:.3px}
input.fi,select.fi,textarea.fi{
  width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line);
  background:rgba(0,0,0,.24);color:var(--text);font-family:inherit;font-size:.93rem;
}
input.fi:focus,select.fi:focus,textarea.fi:focus{outline:2px solid var(--teal);outline-offset:1px}
select.fi option{background:var(--card)}
.field{margin-bottom:14px}
.err{color:var(--bad);font-size:.85rem;margin-top:8px;min-height:1.1em}
.ok{color:var(--good);font-size:.85rem;margin-top:8px}

/* ---- stat tiles ---- */
.tile{
  background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center;
}
.tile .big{font-family:'Montserrat',sans-serif;font-size:1.75rem;font-weight:800;color:var(--gold);line-height:1.1}
.tile .lab{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-top:5px}
.tile.teal .big{color:var(--teal)}

/* ---- mastery ring ---- */
.ring{display:block;margin:0 auto}
.subj-card{
  background:linear-gradient(160deg,var(--card),var(--card2));border:1px solid var(--line);
  border-radius:16px;padding:16px;text-align:center;text-decoration:none;color:inherit;display:block;
  transition:transform .15s ease,border-color .15s ease;
}
.subj-card:hover{transform:translateY(-2px);border-color:rgba(239,194,75,.4)}
.subj-card .ico{font-size:1.5rem}
.subj-card .nm{font-family:'Montserrat',sans-serif;font-weight:700;font-size:.88rem;margin:8px 0 2px}
.subj-card .meta{font-size:.72rem;color:var(--muted)}

/* ---- progress bar ---- */
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.09);overflow:hidden}
.bar>i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--teal),var(--gold))}
.bar.good>i{background:var(--good)} .bar.warn>i{background:var(--warn)} .bar.bad>i{background:var(--bad)}

/* ---- streak grid ---- */
.streak-grid{display:grid;grid-template-columns:repeat(14,1fr);gap:5px;max-width:340px}
.streak-grid .sq{aspect-ratio:1;border-radius:4px;background:rgba(255,255,255,.07)}
.streak-grid .sq.on{background:linear-gradient(135deg,var(--gold),var(--gold2))}

/* ---- rows ---- */
.rows{display:flex;flex-direction:column;gap:9px}
.row{
  display:flex;align-items:center;gap:13px;padding:13px 15px;border-radius:12px;
  background:rgba(0,0,0,.2);border:1px solid var(--line);text-decoration:none;color:inherit;
  transition:background .15s ease,border-color .15s ease;
}
a.row:hover{background:rgba(255,255,255,.055);border-color:rgba(239,194,75,.35)}
.row .r-ico{font-size:1.2rem;flex:none;width:26px;text-align:center}
/* standalone so it works in .row, .kpirow and anywhere else a stacked label is used */
.r-text{display:flex;flex-direction:column;min-width:0;flex:1;gap:2px}
.r-text b{font-size:.9rem;font-weight:700}
.r-text span{font-size:.78rem;color:var(--muted);line-height:1.45}
.row .r-arrow{color:var(--gold);font-size:1.05rem;flex:none}

/* ---- pills ---- */
.pill{
  display:inline-block;padding:3px 10px;border-radius:99px;font-size:.7rem;font-weight:700;
  letter-spacing:.4px;background:rgba(0,207,234,.14);color:var(--teal);border:1px solid rgba(0,207,234,.3);
}
.pill.gold{background:rgba(239,194,75,.14);color:var(--gold);border-color:rgba(239,194,75,.32)}
.pill.good{background:rgba(74,222,128,.14);color:var(--good);border-color:rgba(74,222,128,.3)}
.pill.bad{background:rgba(248,113,113,.14);color:var(--bad);border-color:rgba(248,113,113,.3)}
.pill.mute{background:rgba(255,255,255,.06);color:var(--muted);border-color:var(--line)}

/* ---- practice ---- */
.qcard{background:linear-gradient(160deg,var(--card),var(--card2));border:1px solid var(--line);border-radius:18px;padding:24px}
.qstem{font-size:1.08rem;line-height:1.6;font-weight:500;margin:14px 0 20px}
.opts{display:flex;flex-direction:column;gap:10px}
.opt{
  display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:12px;cursor:pointer;
  background:rgba(0,0,0,.24);border:1px solid var(--line);color:var(--text);text-align:left;
  font-family:inherit;font-size:.94rem;line-height:1.5;width:100%;transition:all .15s ease;
}
.opt:hover:not(:disabled){border-color:var(--teal);background:rgba(0,207,234,.07)}
.opt .k{
  flex:none;width:25px;height:25px;border-radius:7px;background:rgba(255,255,255,.09);
  display:grid;place-items:center;font-weight:700;font-size:.8rem;font-family:'Montserrat',sans-serif;
}
.opt.right{border-color:var(--good);background:rgba(74,222,128,.13)}
.opt.right .k{background:var(--good);color:#07131f}
.opt.wrong{border-color:var(--bad);background:rgba(248,113,113,.13)}
.opt.wrong .k{background:var(--bad);color:#07131f}
.opt:disabled{cursor:default}
.feedback{margin-top:18px;padding:16px;border-radius:12px;background:rgba(0,0,0,.28);border-left:3px solid var(--teal)}
.feedback h4{font-size:.75rem;text-transform:uppercase;letter-spacing:1.2px;color:var(--teal);margin-bottom:6px}
.feedback p{font-size:.9rem;line-height:1.62;color:var(--text)}
.feedback .tech{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}
.feedback .tech h4{color:var(--gold)}
.qmeta{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:.75rem;color:var(--muted)}

/* ---- misc ---- */
.note{
  background:rgba(0,207,234,.07);border:1px solid rgba(0,207,234,.22);border-radius:12px;
  padding:14px 16px;font-size:.86rem;line-height:1.6;color:var(--muted);
}
.note b{color:var(--text)}
.note.gold{background:rgba(239,194,75,.07);border-color:rgba(239,194,75,.24)}
.empty{text-align:center;padding:44px 20px;color:var(--muted)}
.empty .ico{font-size:2.4rem;opacity:.5;margin-bottom:12px}
footer.foot{border-top:1px solid var(--line);padding:26px 0;text-align:center;color:var(--muted);font-size:.8rem}
footer.foot a{color:var(--gold);text-decoration:none}
.hidden{display:none !important}
table.tbl{width:100%;border-collapse:collapse;font-size:.87rem}
table.tbl th,table.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line)}
table.tbl th{font-family:'Montserrat',sans-serif;font-size:.72rem;text-transform:uppercase;letter-spacing:.9px;color:var(--muted)}
.scrollx{overflow-x:auto}
@media (max-width:640px){
  .topnav a{padding:6px 9px;font-size:.76rem}
  .brandtext span{display:none}
  .card{padding:16px}
}