/* eStar 5-a-Day Science widget. Self-contained: every rule sits under .fad and uses its own
   colour tokens, so it looks the same on the white home page, 5-a-day.html and (with .fad-dark)
   the charcoal student portal. */
.fad{
  --fad-surface:#FFFFFF;--fad-sunk:#F1F2F2;--fad-foot:#F7F8F8;
  --fad-ink:#2B2F30;--fad-ink-2:#4B5152;--fad-muted:#6A7070;
  --fad-line:#E3E5E5;--fad-line-2:#CDD1D1;
  --fad-logo:#7A8080;--fad-accent:#2B2F30;--fad-on-accent:#FFFFFF;--fad-accent-hover:#454B4C;--fad-soft:#F1F2F2;
  --fad-done:#E3E6E6;--fad-focus:#E3E6E6;
  --fad-band:#6B7171;--fad-on-band:#FFFFFF;--fad-on-band-dim:rgba(255,255,255,0.86);
  --fad-display:'Inter Tight','Helvetica Neue',Arial,sans-serif;
  --fad-body:'Inter','Helvetica Neue',Arial,sans-serif;
  --fad-mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  position:relative;color:var(--fad-ink);font-family:var(--fad-body);font-size:16px;line-height:1.6;text-align:left
}
.fad.fad-dark{
  --fad-surface:#3E4344;--fad-sunk:#2B2F30;--fad-foot:#343839;
  --fad-ink:#FFFFFF;--fad-ink-2:rgba(255,255,255,0.82);--fad-muted:rgba(255,255,255,0.58);
  --fad-line:rgba(255,255,255,0.12);--fad-line-2:rgba(255,255,255,0.28);
  --fad-logo:#C9CDCD;--fad-accent:#C9CDCD;--fad-on-accent:#2B2F30;--fad-accent-hover:#E4E6E6;--fad-soft:#343839;
  --fad-done:#4B5152;--fad-focus:rgba(201,205,205,0.35);
  --fad-band:#C9CDCD;--fad-on-band:#2B2F30;--fad-on-band-dim:rgba(43,47,48,0.8)
}
.fad *,.fad *::before,.fad *::after{box-sizing:border-box}
.fad [hidden]{display:none!important}
.fad a{color:inherit}
.fad button{font:inherit;color:inherit;cursor:pointer;margin:0}
.fad h3,.fad p,.fad ol,.fad ul{margin:0;padding:0}
.fad :focus-visible{outline:2px solid var(--fad-accent);outline-offset:3px}
.fad-mono{font-family:var(--fad-mono);font-size:12px;font-weight:500;letter-spacing:0.12em;text-transform:uppercase}
.fad-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:8px;border:1px solid transparent;font-size:15px;font-weight:600;line-height:1.2;text-decoration:none;transition:background-color .18s,border-color .18s,color .18s}
.fad-btn-primary{background:var(--fad-accent);color:var(--fad-on-accent)}
.fad-btn-primary:hover{background:var(--fad-accent-hover)}
.fad-btn-ghost{background:var(--fad-surface);border-color:var(--fad-line-2);color:var(--fad-ink)}
.fad-btn-ghost:hover{border-color:var(--fad-ink)}

/* SUBJECTS */
.fad-subjects{display:flex;gap:12px;margin-bottom:24px}
.fad-subj-btn{min-width:150px;text-align:left;padding:14px 18px;border-radius:12px;border:1px solid var(--fad-line-2);background:var(--fad-surface);transition:border-color .18s,background-color .18s}
.fad-subj-btn:hover{border-color:var(--fad-ink-2)}
.fad-subj-btn b{display:block;font-family:var(--fad-display);font-size:18px;font-weight:600;letter-spacing:-0.01em}
.fad-subj-btn span{font-family:var(--fad-mono);font-size:12px;letter-spacing:0.06em;color:var(--fad-muted)}
.fad-subj-btn[aria-pressed="true"]{border-color:var(--fad-accent);background:var(--fad-soft);box-shadow:inset 0 0 0 1px var(--fad-accent)}
.fad-subj-btn[aria-pressed="true"] b{color:var(--fad-accent)}

/* LAYOUT */
.fad-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:clamp(24px,3vw,40px);align-items:start}
.fad-side{position:sticky;top:92px;display:grid;gap:16px}
.fad-side .fad-mono{color:var(--fad-muted)}
.fad-days{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-top:10px}
.fad-day-btn{position:relative;aspect-ratio:1;border-radius:8px;border:1px solid var(--fad-line-2);background:var(--fad-surface);font-family:var(--fad-mono);font-size:14px;font-weight:500;display:flex;align-items:center;justify-content:center;padding:0;transition:border-color .15s,background-color .15s}
.fad-day-btn:hover{border-color:var(--fad-ink-2)}
.fad-day-btn.done{background:var(--fad-done);border-color:transparent;color:var(--fad-ink)}
.fad-day-btn.done::after{content:'';position:absolute;top:4px;right:4px;width:5px;height:5px;border-radius:50%;background:var(--fad-logo)}
.fad-day-btn[aria-current="true"]{background:var(--fad-accent);border-color:var(--fad-accent);color:var(--fad-on-accent)}
.fad-panel{background:var(--fad-surface);border:1px solid var(--fad-line);border-radius:14px;padding:20px}
.fad-progress-top{display:flex;justify-content:space-between;align-items:baseline}
.fad-progress-top b{font-family:var(--fad-display);font-size:32px;font-weight:600;letter-spacing:-0.02em;font-variant-numeric:tabular-nums}
.fad-progress-top span{font-size:14px;color:var(--fad-muted)}
.fad-bar{height:6px;border-radius:6px;background:var(--fad-sunk);margin:12px 0 14px;overflow:hidden}
.fad-bar i{display:block;height:100%;width:0;background:var(--fad-logo);border-radius:6px;transition:width .3s}
.fad-panel p{font-size:14px;color:var(--fad-muted);line-height:1.5}
.fad-text-btn{background:none;border:none;padding:0;margin-top:12px;font-size:13.5px;color:var(--fad-ink-2);text-decoration:underline;text-underline-offset:3px}
.fad-text-btn:hover{color:var(--fad-ink)}
.fad-how{font-size:14px;color:var(--fad-ink-2);line-height:1.55}
.fad-how b{display:block;font-family:var(--fad-display);font-size:15px;font-weight:600;color:var(--fad-ink);margin-bottom:6px}
.fad-how ol{padding-left:18px;display:grid;gap:4px}

/* CARD */
.fad-card{background:var(--fad-surface);border:1px solid var(--fad-line);border-radius:16px;overflow:hidden}
.fad-card-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;padding:clamp(22px,3vw,34px);border-bottom:2px solid var(--fad-ink)}
.fad-card-head .fad-mono{color:var(--fad-muted);font-size:11.5px;letter-spacing:0.16em}
.fad-card-head h3{font-family:var(--fad-display);font-size:clamp(30px,3vw,38px);font-weight:600;letter-spacing:-0.03em;line-height:1.05;margin:8px 0 4px;color:var(--fad-ink)}
.fad-topics{color:var(--fad-ink-2);font-size:16px}
.fad-stats{display:flex;gap:26px;text-align:center}
.fad-stats b{display:block;font-family:var(--fad-display);font-size:30px;font-weight:600;line-height:1;font-variant-numeric:tabular-nums}
.fad-stats span{font-family:var(--fad-mono);font-size:10.5px;letter-spacing:0.14em;color:var(--fad-muted)}
.fad-questions{list-style:none;padding:0 clamp(22px,3vw,34px)}
.fad-q{display:grid;grid-template-columns:36px minmax(0,1fr);padding:28px 0;border-bottom:1px solid var(--fad-line)}
.fad-q:last-child{border-bottom:none}
.fad-q-n{font-family:var(--fad-mono);font-size:16px;color:var(--fad-logo);padding-top:2px}
.fad-q-text{font-size:18px;line-height:1.55;color:var(--fad-ink);max-width:700px}
.fad-q-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:10px}
.fad-q-marks{font-family:var(--fad-mono);font-size:14px;color:var(--fad-ink-2)}
.fad-q-topic{font-size:12.5px;padding:3px 10px;border:1px solid var(--fad-line-2);border-radius:100px;color:var(--fad-muted)}
.fad-q-actions{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-top:18px}
.fad-ms-btn{padding:10px 16px;border-radius:8px;border:1px solid var(--fad-line-2);background:var(--fad-surface);font-size:14.5px;font-weight:600}
.fad-ms-btn:hover{border-color:var(--fad-ink)}
.fad-ms-btn[aria-expanded="true"]{background:var(--fad-accent);border-color:var(--fad-accent);color:var(--fad-on-accent)}
.fad-score{display:flex;align-items:center;gap:6px}
.fad-score .fad-mono{font-size:11px;color:var(--fad-muted);margin-right:6px}
.fad-score button{width:36px;height:36px;border-radius:8px;border:1px solid var(--fad-line-2);background:var(--fad-surface);font-family:var(--fad-mono);font-size:14px;font-weight:500;padding:0}
.fad-score button:hover{border-color:var(--fad-ink)}
.fad-score button[aria-pressed="true"]{background:var(--fad-accent);border-color:var(--fad-accent);color:var(--fad-on-accent)}
.fad-ms{margin-top:16px;padding:16px 18px;border-radius:10px;background:var(--fad-soft);border-left:3px solid var(--fad-logo)}
.fad-ms-label{font-family:var(--fad-mono);font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:var(--fad-muted);margin-bottom:8px}
.fad-ms-note{font-size:14.5px;font-weight:600;margin-bottom:6px}
.fad-ms ul{padding-left:18px;display:grid;gap:4px;font-size:15px;color:var(--fad-ink)}
.fad-ms-extra{font-size:13.5px;color:var(--fad-ink-2);margin-top:8px}
.fad-card-foot{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:22px clamp(22px,3vw,34px);background:var(--fad-foot);border-top:1px solid var(--fad-line)}
.fad-total b{font-family:var(--fad-display);font-size:24px;font-weight:600;font-variant-numeric:tabular-nums}
.fad-total span{display:block;font-size:13.5px;color:var(--fad-muted)}
.fad-foot-actions{display:flex;flex-wrap:wrap;gap:10px}
.fad-tick-btn{background:var(--fad-accent);color:var(--fad-on-accent);border-color:var(--fad-accent)}
.fad-tick-btn:hover{filter:brightness(0.92)}
.fad-tick-btn.is-done{background:var(--fad-surface);color:var(--fad-accent);border-color:var(--fad-accent)}

/* BOOK A CALL BANNER */
.fad-cta{margin-top:24px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;padding:24px clamp(22px,3vw,34px);border-radius:16px;background:var(--fad-band);color:var(--fad-on-band)}
.fad-cta b{display:block;font-family:var(--fad-display);font-size:20px;font-weight:600;letter-spacing:-0.01em}
.fad-cta span{font-size:15px;color:var(--fad-on-band-dim)}
.fad-cta .fad-btn{background:var(--fad-on-band);color:var(--fad-band)}
.fad-cta .fad-btn:hover{filter:brightness(0.94)}

@media(max-width:900px){
  .fad-layout{grid-template-columns:1fr}
  .fad-side{position:static;grid-template-columns:1fr 1fr}
  .fad-side > :first-child{grid-column:1 / -1}
  .fad-how{display:none}
}
@media(max-width:600px){
  .fad-subjects{width:100%}
  .fad-subj-btn{flex:1;min-width:0}
  .fad-side{grid-template-columns:1fr}
  .fad-card-head{flex-direction:column;align-items:flex-start}
  .fad-q{grid-template-columns:28px minmax(0,1fr)}
  .fad-q-text{font-size:17px}
  .fad-foot-actions,.fad-foot-actions .fad-btn{width:100%}
}
@media (prefers-reduced-motion: reduce){.fad-bar i,.fad-btn,.fad-subj-btn,.fad-day-btn{transition:none}}