:root{
  --jdt-navy:#0d2440;
  --jdt-blue:#1b64d1;
  --jdt-teal:#12a89d;
  --jdt-yellow:#ffc233;
  --jdt-ink:#12233b;
}
html{scroll-behavior:smooth;}
body{
  color:var(--jdt-ink);
  background:#f4f7fb;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
section[id]{scroll-margin-top:80px;}

/* NAV */
.jdt-nav{background:var(--jdt-navy);box-shadow:0 2px 14px rgba(0,0,0,.15);}
.jdt-brand-accent{color:var(--jdt-yellow);}
.jdt-nav .nav-link{border-radius:.6rem;padding-inline:.85rem;transition:.15s;}
.jdt-nav .nav-link:hover{background:rgba(255,255,255,.1);}
.jdt-nav .nav-link.active{background:var(--jdt-yellow);color:var(--jdt-navy)!important;font-weight:600;}

/* HERO */
.jdt-hero{
  background:
    radial-gradient(1100px 400px at 85% -10%,rgba(18,168,157,.35),transparent),
    linear-gradient(105deg,rgba(13,36,64,.94) 0%,rgba(18,58,107,.88) 42%,rgba(27,100,209,.55) 100%),
    url('../assets/img/hero-construction.jpg') center 32% / cover no-repeat;
  position:relative;overflow:hidden;
}
.jdt-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(255,194,51,.06) 0 18px,transparent 18px 36px);
  pointer-events:none;
}
.jdt-hero .container{position:relative;z-index:1;}
.jdt-pill{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);font-size:.9rem;padding:.5rem .9rem;border-radius:2rem;}
.jdt-progress-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(6px);color:#fff;}
.jdt-progress{height:26px;border-radius:2rem;background:rgba(255,255,255,.2);}
.jdt-progress .progress-bar{border-radius:2rem;transition:width .5s ease;}

/* FACTS */
.jdt-facts{margin-top:-2.2rem;position:relative;z-index:2;}
.jdt-fact{background:#fff;box-shadow:0 6px 20px rgba(13,36,64,.08);transition:.18s;}
.jdt-fact:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(13,36,64,.15);}

/* CATEGORY CHOOSER */
.jdt-chooser{background:#fff;border-radius:1rem;padding:1.1rem 1.25rem;box-shadow:0 6px 20px rgba(13,36,64,.07);}
.jdt-chip-btn{background:#eef3fb;color:var(--jdt-navy);font-weight:600;border:2px solid transparent;border-radius:2rem;padding:.55rem 1.1rem;}
.jdt-chip-btn:hover{background:var(--jdt-navy);color:#fff;}
.jdt-chip-btn .badge{background:var(--jdt-yellow);color:var(--jdt-navy);margin-left:.15rem;}
.jdt-chip-btn:hover .badge{background:var(--jdt-yellow);}

/* CATEGORY */
.jdt-cat-icon{font-size:2.4rem;line-height:1;}

/* VIDEO CARDS */
.jdt-card{border:none;border-radius:1rem;overflow:hidden;background:#fff;box-shadow:0 8px 24px rgba(13,36,64,.09);transition:.2s;}
.jdt-card:hover{transform:translateY(-5px);box-shadow:0 16px 36px rgba(13,36,64,.16);}
.jdt-card.watched{outline:3px solid var(--jdt-teal);}
.jdt-ratio{position:relative;padding-top:56.25%;background:#0d2440;}
.jdt-ratio iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.jdt-thumb{position:absolute;inset:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:.4rem;color:#fff;text-align:center;text-decoration:none;padding:1rem;
  background:linear-gradient(135deg,#123a6b,#12a89d);}
.jdt-thumb:hover{color:#fff;filter:brightness(1.06);}
.jdt-thumb .play{font-size:3rem;}
.jdt-num{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:50%;
  background:var(--jdt-yellow);color:var(--jdt-navy);font-weight:800;flex:0 0 auto;}
.jdt-chip{font-size:.72rem;font-weight:600;padding:.2rem .6rem;border-radius:2rem;}
.chip-time{background:#eef3fb;color:#1b64d1;}
.chip-src{background:#e9faf7;color:#0e857c;}
.chip-ext{background:#fff3d6;color:#a9791b;}
.jdt-learn-list{font-size:.92rem;padding-left:1.1rem;margin:0;}
.jdt-learn-list li{margin-bottom:.15rem;}
.btn-watched{--bs-btn-bg:var(--jdt-teal);--bs-btn-border-color:var(--jdt-teal);--bs-btn-hover-bg:#0e857c;--bs-btn-hover-border-color:#0e857c;--bs-btn-color:#fff;--bs-btn-hover-color:#fff;}

/* KEY TAKEAWAYS + QUICK CHECK */
.jdt-takeaways{background:linear-gradient(160deg,#0d2440,#12345f);color:#fff;box-shadow:0 8px 24px rgba(13,36,64,.12);}
.jdt-take-list{list-style:none;padding:0;margin:0;}
.jdt-take-list li{position:relative;padding-left:1.9rem;margin-bottom:.7rem;line-height:1.35;}
.jdt-take-list li::before{content:"✔";position:absolute;left:0;top:0;color:var(--jdt-yellow);font-weight:800;}
.jdt-take-list li:last-child{margin-bottom:0;}
.jdt-quick{background:#fff;border:1px solid #e6ecf4;box-shadow:0 8px 24px rgba(13,36,64,.06);}
.jdt-quick .q-card{background:#f7fafd;}

/* GOLDEN RULE */
.jdt-golden{background:linear-gradient(135deg,#c0392b,#e74c3c);}
.jdt-step{background:rgba(0,0,0,.18);border-radius:.7rem;padding:.65rem .9rem;height:100%;}
.jdt-stop-sign{
  width:150px;height:150px;background:#c0392b;color:#fff;font-weight:900;font-size:2.1rem;
  display:flex;align-items:center;justify-content:center;
  clip-path:polygon(30% 0,70% 0,100% 30%,100% 70%,70% 100%,30% 100%,0 70%,0 30%);
  border:6px solid #fff;box-shadow:0 8px 20px rgba(0,0,0,.3);
}

/* GLOSSARY FLIP CARDS */
.flip{background:transparent;height:150px;perspective:1000px;cursor:pointer;}
.flip-inner{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d;}
.flip.flipped .flip-inner{transform:rotateY(180deg);}
.flip-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:1rem;padding:1rem;
  display:flex;flex-direction:column;justify-content:center;box-shadow:0 6px 18px rgba(13,36,64,.1);}
.flip-front{background:#fff;}
.flip-front .term{font-weight:800;font-size:1.15rem;color:var(--jdt-blue);}
.flip-back{background:var(--jdt-navy);color:#fff;transform:rotateY(180deg);font-size:.95rem;}
.flip .tap{font-size:.75rem;color:#8a99ad;margin-top:.4rem;}

/* QUIZ */
.jdt-quiz{background:#fff;}
.q-card{border:1px solid #e6ecf4;border-radius:1rem;padding:1.1rem 1.25rem;margin-bottom:1rem;background:#fbfdff;}
.q-opt{display:block;width:100%;text-align:left;border:2px solid #e2e9f2;background:#fff;border-radius:.7rem;
  padding:.7rem 1rem;margin-bottom:.5rem;transition:.12s;font-weight:500;cursor:pointer;}
.q-opt:hover{border-color:var(--jdt-blue);}
.q-opt.correct{border-color:var(--jdt-teal);background:#e9faf7;}
.q-opt.wrong{border-color:#e74c3c;background:#fdecea;}
.q-opt:disabled{cursor:default;opacity:1;}
.q-feedback{font-size:.9rem;margin-top:.3rem;font-weight:600;}

/* BACK TO TOP */
.jdt-top{position:fixed;bottom:1.2rem;right:1.2rem;width:48px;height:48px;font-size:1.4rem;font-weight:800;
  color:var(--jdt-navy);display:none;align-items:center;justify-content:center;padding:0;z-index:60;}
.jdt-top.show{display:flex;}

/* FOOTER */
.jdt-footer{background:var(--jdt-navy);}

/* ============ BOOKING PAGE ============ */
.bk-card{background:#fff;border:1px solid #e6ecf4;border-radius:1.1rem;box-shadow:0 10px 30px rgba(13,36,64,.08);}
.bk-step{display:flex;gap:1rem;padding:1.4rem 0;border-top:1px solid #eef2f7;}
.bk-step:first-child{border-top:0;padding-top:0;}
.bk-step-no{flex:0 0 auto;width:2rem;height:2rem;border-radius:50%;background:var(--jdt-navy);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;}
/* course chips */
.bk-course input{position:absolute;opacity:0;}
.bk-course>span{display:flex;flex-direction:column;align-items:center;gap:.25rem;text-align:center;font-weight:600;font-size:.92rem;
  border:2px solid #e2e9f2;border-radius:.8rem;padding:.8rem .4rem;cursor:pointer;transition:.15s;height:100%;}
.bk-course .bk-emoji{font-size:1.6rem;}
.bk-course>span:hover{border-color:var(--jdt-blue);}
.bk-course input:checked+span{border-color:var(--jdt-blue);background:#eef4ff;box-shadow:0 4px 12px rgba(27,100,209,.16);}
.bk-course input:focus-visible+span{outline:2px solid var(--jdt-blue);outline-offset:2px;}
/* slots */
.bk-slots{display:flex;gap:.6rem;flex-wrap:wrap;}
.bk-slot{flex:1 1 0;min-width:140px;position:relative;}
.bk-slot input{position:absolute;opacity:0;}
.bk-slot>span{display:flex;flex-direction:column;border:2px solid #e2e9f2;border-radius:.7rem;padding:.6rem .8rem;cursor:pointer;transition:.15s;}
.bk-slot>span b{font-size:.98rem;}
.bk-slot>span small{color:#6b7a88;}
.bk-slot>span:hover{border-color:var(--jdt-blue);}
.bk-slot input:checked+span{border-color:var(--jdt-blue);background:#eef4ff;}
.bk-slot.taken>span{opacity:.5;cursor:not-allowed;background:#f4f5f7;border-style:dashed;}
.bk-taken{position:absolute;top:.4rem;right:.5rem;background:#e74c3c;color:#fff;font-size:.65rem;font-weight:700;padding:.1rem .45rem;border-radius:2rem;text-transform:uppercase;}
/* honeypot */
.bk-hp{position:absolute;left:-9999px;height:0;overflow:hidden;}
/* sidebar */
.bk-side{background:#fff;border:1px solid #e6ecf4;box-shadow:0 8px 24px rgba(13,36,64,.06);}
.bk-info li{display:flex;gap:.7rem;align-items:flex-start;padding:.55rem 0;border-top:1px solid #f0f3f7;}
.bk-info li:first-child{border-top:0;padding-top:0;}
.bk-info li span{font-size:1.3rem;}
.bk-side-dark{background:linear-gradient(160deg,#0d2440,#123a6b);color:#fff;}
/* success */
.bk-success{background:#eafaf3;border:1px solid #b7e6cf;}
.bk-summary{max-width:340px;background:#fff;border:1px solid #d8ece0;border-radius:.8rem;overflow:hidden;}
.bk-summary>div{display:flex;justify-content:space-between;gap:1rem;padding:.6rem .9rem;border-top:1px solid #eef4ef;}
.bk-summary>div:first-child{border-top:0;}
.bk-summary span{color:#6b7a88;}

/* ============ COURSE DETAILS (per-category) ============ */
.jdt-details-link{background:transparent;border:1.5px solid #cdd8e6;color:var(--jdt-navy);font-weight:600;
  border-radius:2rem;padding:.5rem 1.05rem;cursor:pointer;transition:.15s;font-size:.95rem;line-height:1;}
.jdt-details-link:hover{border-color:var(--jdt-blue);color:var(--jdt-blue);background:#f2f7ff;}
.jdt-details-link .jdt-det-ic{font-weight:800;margin-right:.15rem;}
.jdt-details-link.open{background:var(--jdt-navy);color:#fff;border-color:var(--jdt-navy);}
.jdt-details-inner{background:#fff;border:1px solid #e6ecf4;border-left:5px solid var(--jdt-blue);
  box-shadow:0 8px 24px rgba(13,36,64,.07);}
.jdt-details-intro{font-size:1.08rem;color:var(--jdt-ink);margin-bottom:1rem;line-height:1.5;}
.jdt-details-h{font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--jdt-teal);margin-bottom:.5rem;}
.jdt-details-list{margin:0;padding-left:1.1rem;}
.jdt-details-list li{margin-bottom:.45rem;color:#3c4a56;line-height:1.4;}

/* ============ CATEGORY BOOKING INFO ============ */
.jdt-cat-info{display:flex;flex-wrap:wrap;gap:.4rem;}
.jdt-info-chip{background:#eef3fb;color:var(--jdt-navy);font-weight:600;font-size:.82rem;padding:.32rem .75rem;border-radius:2rem;border:1px solid #dbe6f5;}
.jdt-info-cost{background:#e9faf7;color:#0e857c;border-color:#c3ede6;}
.jdt-info-off{background:#fdecea;color:#b23b2e;border-color:#f5cec9;}
.bk-course-meta{display:block;font-weight:500;font-size:.72rem;color:#6b7a88;margin-top:.2rem;line-height:1.25;}

/* ============ ONLINE TEST ============ */
.tst-card{background:#fff;border:1px solid #e6ecf4;border-radius:1.1rem;box-shadow:0 10px 30px rgba(13,36,64,.08);}
.tst-progress{height:12px;border-radius:2rem;background:#e9eef5;}
.tst-progress .progress-bar{border-radius:2rem;transition:width .4s ease;}
.tst-q{font-size:1.2rem;font-weight:700;color:var(--jdt-ink);line-height:1.4;}
.tst-opts .q-opt{font-size:1rem;}
.tst-img{max-width:100%;height:auto;border-radius:.8rem;border:1px solid #e6ecf4;display:block;max-height:340px;}
.tst-ref{border:1px solid #e6ecf4;border-radius:.8rem;padding:.8rem;background:#f8fafc;}
.tst-ref-title{font-weight:700;font-size:.9rem;color:var(--jdt-navy);margin-bottom:.5rem;}
.tst-feedback:empty{display:none;}
.tst-ok{background:#e9faf7;border:1px solid #b7e6d9;color:#0e6b5e;border-radius:.7rem;padding:.7rem 1rem;font-weight:600;}
.tst-no{background:#fdecea;border:1px solid #f5cec9;color:#b23b2e;border-radius:.7rem;padding:.7rem 1rem;font-weight:600;}
.tst-stat{background:#f5f8fc;border:1px solid #e6ecf4;border-radius:.9rem;padding:1rem .5rem;}
.tst-stat-n{font-size:1.7rem;font-weight:800;color:var(--jdt-navy);line-height:1;}
.tst-stat-l{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:#6b7a88;margin-top:.3rem;}

/* ============ STUDY GUIDE ============ */
.sg-hero{background:radial-gradient(900px 380px at 88% -10%,rgba(18,168,157,.4),transparent),linear-gradient(105deg,#0d2440 0%,#123a6b 60%,#1b64d1 100%);}
.sg-toc{position:sticky;top:84px;background:#fff;border:1px solid #e6ecf4;border-radius:1rem;padding:1.1rem;box-shadow:0 8px 24px rgba(13,36,64,.06);}
.sg-toc .nav-link{color:#4b5c6b;padding:.3rem .6rem;border-radius:.5rem;font-size:.92rem;font-weight:500;border-left:3px solid transparent;}
.sg-toc .nav-link:hover{background:#f2f7ff;color:var(--jdt-blue);}
.sg-toc .nav-link.active{background:#eef4ff;color:var(--jdt-blue);font-weight:700;border-left-color:var(--jdt-blue);}
.sg-toc .nav-link.studied::after{content:" ✓";color:var(--jdt-teal);font-weight:800;}
.sg-content{max-width:820px;}
.sg-mod{scroll-margin-top:84px;padding:1.4rem 0 1.6rem;border-bottom:1px solid #eef2f7;}
.sg-h{font-weight:800;color:var(--jdt-navy);font-size:clamp(1.4rem,2.6vw,1.9rem);margin-bottom:.8rem;}
.sg-key{background:#fff8e6;border:1px solid #ffe1a1;border-left:5px solid var(--jdt-yellow);border-radius:.7rem;padding:.9rem 1.1rem;color:#5c4a12;}
.sg-list{padding-left:1.1rem;} .sg-list li{margin-bottom:.4rem;}
.sg-chip{background:#eef3fb;border:1px solid #dbe6f5;border-radius:.6rem;padding:.55rem .7rem;text-align:center;font-weight:600;font-size:.9rem;height:100%;color:var(--jdt-navy);}
/* timeline */
.sg-timeline{border-left:3px solid #dbe6f5;padding-left:1.2rem;margin-left:.4rem;}
.sg-tl{position:relative;padding:.55rem 0;}
.sg-tl::before{content:"";position:absolute;left:-1.68rem;top:1rem;width:11px;height:11px;border-radius:50%;background:var(--jdt-blue);border:2px solid #fff;}
.sg-tl.sg-tl-alert::before{background:#e74c3c;}
.sg-yr{display:inline-block;font-weight:800;color:var(--jdt-blue);min-width:6.5rem;}
.sg-tl.sg-tl-alert .sg-yr{color:#e74c3c;}
/* type cards */
.sg-type{background:#fff;border:1px solid #e6ecf4;border-radius:1rem;overflow:hidden;box-shadow:0 8px 24px rgba(13,36,64,.07);height:100%;border-top:5px solid #ccc;}
.sg-type img{width:100%;height:150px;object-fit:cover;}
.sg-type-body{padding:.9rem 1rem;} .sg-type-body h3{font-weight:800;margin:.2rem 0;}
.sg-type-white{border-top-color:#cfd6dd;} .sg-type-brown{border-top-color:#9c6b3f;} .sg-type-blue{border-top-color:#2f6fd6;}
.sg-swatch{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding:.15rem .55rem;border-radius:2rem;color:#fff;}
.sg-type-white .sg-swatch{background:#8a97a3;} .sg-type-brown .sg-swatch{background:#9c6b3f;} .sg-type-blue .sg-swatch{background:#2f6fd6;}
/* friable forms */
.sg-form{border-radius:1rem;padding:1.1rem 1.2rem;height:100%;border:1px solid #e6ecf4;}
.sg-form h3{font-weight:800;} .sg-form-danger{background:#fdecea;border-color:#f5cec9;} .sg-form-ok{background:#e9faf7;border-color:#c3ede6;}
.sg-feature{display:flex;gap:1.2rem;align-items:center;background:#fff;border:1px solid #e6ecf4;border-radius:1rem;padding:1rem;box-shadow:0 8px 24px rgba(13,36,64,.06);}
.sg-feature img{width:190px;height:130px;object-fit:cover;border-radius:.7rem;flex:0 0 auto;}
.sg-wide{width:100%;border-radius:1rem;border:1px solid #e6ecf4;}
/* gallery */
.sg-gal{position:relative;height:170px;border-radius:.9rem;overflow:hidden;cursor:pointer;box-shadow:0 6px 18px rgba(13,36,64,.12);}
.sg-gal-img{position:absolute;inset:0;background-size:cover;background-position:center;}
.sg-gal-face{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:.6rem;transition:opacity .25s;}
.sg-gal-front{background:linear-gradient(0deg,rgba(13,36,64,.72),rgba(13,36,64,.35));color:#fff;}
.sg-gal-front span{font-weight:700;} .sg-gal-front small{opacity:.85;}
.sg-gal-back{background:rgba(13,36,64,.9);color:#fff;opacity:0;}
.sg-gal.revealed .sg-gal-front{opacity:0;} .sg-gal.revealed .sg-gal-back{opacity:1;}
.sg-gal-back span{font-weight:700;font-size:.9rem;line-height:1.25;} 
.sg-gal-tag{margin-top:.5rem;padding:.15rem .6rem;border-radius:2rem;font-weight:700;font-size:.72rem;}
.sg-tag-fri{background:#e74c3c;color:#fff;} .sg-tag-non{background:#12a89d;color:#fff;}
/* register / diseases / cards */
.sg-reg{border-radius:.7rem;overflow:hidden;}
.sg-disease{background:#fff;border:1px solid #e6ecf4;border-top:4px solid #e74c3c;border-radius:.9rem;padding:1rem;height:100%;box-shadow:0 6px 18px rgba(13,36,64,.06);}
.sg-disease h3{font-weight:800;font-size:1.05rem;color:var(--jdt-navy);}
.sg-card2{background:#f7fafd;border:1px solid #e6ecf4;border-radius:.8rem;padding:.9rem 1.1rem;}
/* SAFE + pyramid */
.sg-safe-step{background:var(--jdt-navy);color:#fff;border-radius:.7rem;padding:.7rem;text-align:center;font-weight:600;font-size:.9rem;height:100%;}
.sg-safe-step span{display:block;font-size:1.5rem;font-weight:800;color:var(--jdt-yellow);}
.sg-pyramid{display:flex;flex-direction:column;gap:.35rem;align-items:center;}
.sg-pyr{color:#fff;border-radius:.5rem;padding:.7rem 1rem;text-align:center;font-size:.92rem;}
.sg-pyr-1{width:60%;background:#0e857c;} .sg-pyr-2{width:74%;background:#1b64d1;} .sg-pyr-3{width:88%;background:#f0a51e;color:#3a2b00;} .sg-pyr-4{width:100%;background:#c0392b;}
@media(max-width:576px){.sg-pyr{width:100%!important;}}
/* stop / sign */
.sg-stop{counter-reset:s;} .sg-stop-step{background:#fff;border:1px solid #e6ecf4;border-left:5px solid #e74c3c;border-radius:.6rem;padding:.6rem .9rem;margin-bottom:.5rem;counter-increment:s;}
.sg-stop-step::before{content:counter(s);display:inline-flex;width:1.5rem;height:1.5rem;background:#e74c3c;color:#fff;border-radius:50%;align-items:center;justify-content:center;font-weight:800;margin-right:.6rem;font-size:.8rem;}
.sg-sign{max-width:230px;width:100%;border-radius:.6rem;border:1px solid #e6ecf4;}
.sg-ready{background:#eafaf3;border:1px solid #b7e6cf;}
/* done button */
.sg-done-row{margin-top:1.1rem;}
.sg-done-btn{background:#fff;border:1.5px solid #cdd8e6;color:var(--jdt-navy);font-weight:600;border-radius:2rem;padding:.45rem 1.1rem;cursor:pointer;transition:.15s;}
.sg-done-btn:hover{border-color:var(--jdt-teal);color:var(--jdt-teal);}
.sg-done-btn.done{background:var(--jdt-teal);border-color:var(--jdt-teal);color:#fff;}
.sg-why .sg-chip{display:flex;align-items:center;justify-content:center;}