/* HCA COURSE ENGINE v2 — navy #16263F, gold #C9A24B, Cairo, RTL-aware */
:root{--hca-navy:#16263F;--hca-gold:#C9A24B;--hca-cream:#FAF7F0;--hca-line:#E5E0D5;--hca-grey:#6B7280}
*{box-sizing:border-box}
body{margin:0;font-family:'Cairo','Segoe UI',sans-serif;background:var(--hca-cream);color:var(--hca-navy)}
#hca-app{min-height:100vh}

/* shell */
.hca2-shell{display:flex;min-height:100vh}
.hca2-side{width:300px;flex:0 0 300px;background:var(--hca-navy);color:#fff;padding:22px 18px;display:flex;flex-direction:column;gap:12px}
.hca2-side h1{font-size:19px;margin:4px 0 0;color:var(--hca-gold)}
.hca2-sub{font-size:12px;color:#c8d2e6;margin:0}
.hca2-back{color:#c8d2e6;font-size:12px;text-decoration:none}
.hca2-back:hover{color:var(--hca-gold)}
.hca2-main{flex:1;padding:34px clamp(18px,5vw,60px);overflow-y:auto}

/* progress */
.hca2-progress-label{font-size:12px;color:#c8d2e6;margin-bottom:4px}
.hca2-bar{height:8px;background:#0e1930;border-radius:99px;overflow:hidden}
.hca2-bar-fill{height:100%;background:var(--hca-gold);border-radius:99px;transition:width .4s}

/* nav */
.hca2-nav{display:flex;align-items:center;gap:10px;width:100%;text-align:start;background:transparent;border:1px solid #33456b;color:#e8edf7;border-radius:10px;padding:10px 12px;margin:3px 0;font-family:inherit;font-size:13px;cursor:pointer}
.hca2-nav:hover:not(:disabled){border-color:var(--hca-gold)}
.hca2-nav-n{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:#0e1930;color:var(--hca-gold);font-size:12px;flex:0 0 24px}
.hca2-done .hca2-nav-n{background:var(--hca-gold);color:var(--hca-navy)}
.hca2-locked{opacity:.45}
button.hca2-locked{cursor:not-allowed}
.hca2-exam{margin-top:10px;border-style:dashed}
div.hca2-locked{background:#fff;border:1px dashed var(--hca-line);border-radius:12px;padding:40px;text-align:center;color:var(--hca-grey);font-size:15px}

/* lesson */
.hca2-lesson{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--hca-line);border-radius:14px;padding:30px clamp(18px,4vw,42px)}
.hca2-lesson h2{margin-top:0;color:var(--hca-navy);border-bottom:2px solid var(--hca-gold);padding-bottom:10px}
.hca2-lesson p{line-height:1.9;font-size:15px}
.hca2-lesson ul{line-height:1.9;font-size:15px;padding-inline-start:22px}
.hca2-tip{background:var(--hca-cream);border-inline-start:4px solid var(--hca-gold);border-radius:8px;padding:12px 16px;margin:14px 0}
.hca2-warn{background:#fdf3f2;border-inline-start:4px solid #c0392b;border-radius:8px;padding:12px 16px;margin:14px 0}
.hca2-example{background:#f4f7fb;border:1px solid #dfe7f2;border-radius:10px;padding:14px 18px;margin:14px 0}
.hca2-example h4{margin:0 0 6px;color:#3a5686}
.hca2-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}
.hca2-table th{background:var(--hca-navy);color:var(--hca-gold);padding:9px 12px;text-align:start}
.hca2-table td{border:1px solid var(--hca-line);padding:8px 12px}
.hca2-table tr:nth-child(even) td{background:var(--hca-cream)}

/* image */
.hca2-fig{margin:16px 0;text-align:center}
.hca2-fig img{max-width:100%;border:1px solid var(--hca-line);border-radius:10px;box-shadow:0 3px 12px rgba(22,38,63,.08)}
.hca2-fig figcaption{font-size:12.5px;color:var(--hca-grey);margin-top:6px}

/* flashcards */
.hca2-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin:16px 0}
.hca2-card{perspective:800px;cursor:pointer;min-height:120px;outline-color:var(--hca-gold)}
.hca2-card-inner{position:relative;width:100%;height:100%;min-height:120px;transition:transform .5s;transform-style:preserve-3d}
.hca2-flipped .hca2-card-inner{transform:rotateY(180deg)}
.hca2-card-front,.hca2-card-back{position:absolute;inset:0;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;border-radius:12px;padding:14px;font-size:14px}
.hca2-card-front{background:var(--hca-navy);color:#fff}
.hca2-card-front small{color:var(--hca-gold);font-size:10px;margin-top:8px}
.hca2-card-back{background:var(--hca-gold);color:var(--hca-navy);transform:rotateY(180deg);font-weight:600}

/* quiz */
.hca2-quiz{margin-top:26px;border-top:1px dashed var(--hca-line);padding-top:18px}
.hca2-quiz h3{color:var(--hca-navy)}
.hca2-q{border:1px solid var(--hca-line);border-radius:10px;margin:12px 0;padding:12px 16px}
.hca2-q legend{font-weight:700;font-size:14px;padding:0 6px}
.hca2-q label{display:block;padding:6px 4px;font-size:14px;cursor:pointer}
.hca2-right{border-color:#2e8b57;background:#f0faf4}
.hca2-wrong{border-color:#c0392b;background:#fdf3f2}
.hca2-pass{background:#f0faf4;border:1px solid #2e8b57;color:#1e6b40;border-radius:10px;padding:12px 16px;margin:12px 0;font-weight:700}
.hca2-fail{background:#fdf3f2;border:1px solid #c0392b;color:#8c2b20;border-radius:10px;padding:12px 16px;margin:12px 0}

/* buttons */
.hca2-btn{display:inline-block;background:var(--hca-gold);color:var(--hca-navy);border:0;border-radius:10px;padding:11px 26px;font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;text-decoration:none;margin:6px 4px 0 0}
.hca2-btn:hover{filter:brightness(1.06)}
.hca2-btn-wa{background:#25D366;color:#fff}

/* gate */
.hca2-gate{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.hca2-gate-card{background:#fff;border:1px solid var(--hca-line);border-radius:16px;padding:38px;max-width:440px;width:100%;text-align:center}
.hca2-gate-card h1{font-size:20px;margin:6px 0}
.hca2-gate-card h2{font-size:15px;color:var(--hca-gold);margin:14px 0 4px}
.hca2-gate-card p{color:var(--hca-grey);font-size:13px}
.hca2-gate-card input{width:100%;border:1px solid var(--hca-line);border-radius:10px;padding:11px;font-family:inherit;font-size:15px;text-align:center;letter-spacing:1px;margin:8px 0}
.hca2-err{color:#c0392b;font-size:13px;min-height:18px}
.hca2-bell{font-size:34px}

/* certificate form */
.hca2-certform{margin-top:14px}
.hca2-certform label{display:block;font-size:13px;color:var(--hca-grey);margin-bottom:6px}
.hca2-certform input{border:1px solid var(--hca-line);border-radius:10px;padding:10px 14px;font-family:inherit;font-size:16px;width:min(360px,100%)}

/* certificate */
.hca2-cert-wrap{max-width:820px;margin:0 auto;text-align:center}
.hca2-cert{background:#fff;border-radius:6px;padding:16px;box-shadow:0 6px 24px rgba(22,38,63,.12)}
.hca2-cert-border{border:3px double var(--hca-gold);border-radius:4px;padding:44px 30px}
.hca2-cert-academy{letter-spacing:3px;font-size:12px;color:var(--hca-grey);text-transform:uppercase}
.hca2-cert h2{color:var(--hca-navy);font-size:26px;margin:12px 0 4px}
.hca2-cert p{color:var(--hca-grey);margin:8px 0}
.hca2-cert-name{font-size:30px;font-weight:800;color:var(--hca-navy);border-bottom:2px solid var(--hca-gold);display:inline-block;padding:0 26px 6px;margin:8px 0}
.hca2-cert-course{font-size:19px;font-weight:700;color:var(--hca-gold);margin:6px 0 14px}
.hca2-cert-meta{font-size:13px;color:var(--hca-grey)}

/* language switch */
.hca2-lang{margin-top:auto;display:flex;gap:6px;justify-content:center;padding-top:14px}
.hca2-lang button{background:transparent;border:1px solid #33456b;color:#c8d2e6;border-radius:8px;padding:6px 14px;font-family:inherit;font-size:12px;cursor:pointer}
.hca2-gate-card .hca2-lang button{border-color:var(--hca-line);color:var(--hca-grey)}
.hca2-lang-on{border-color:var(--hca-gold)!important;color:var(--hca-gold)!important}

/* mobile */
@media(max-width:820px){
  .hca2-shell{flex-direction:column}
  .hca2-side{width:100%;max-height:min(48vh,420px);flex:0 0 auto;padding:14px 16px;overflow:hidden}
  .hca2-side nav{flex:1;min-height:132px;overflow-y:auto;overscroll-behavior:contain;padding-inline-end:4px}
  .hca2-side h1{font-size:17px}
  .hca2-lang{margin-top:0;padding-top:6px}
  .hca2-main{padding:20px 14px}
}

/* print: certificate only */
@media print{
  body *{visibility:hidden}
  .hca2-cert,.hca2-cert *{visibility:visible}
  .hca2-cert{position:fixed;inset:0;box-shadow:none}
}

/* ===== v2.1 interactions ===== */
.hca2-lesson-kicker{font-size:12px;letter-spacing:0;color:var(--hca-gold);font-weight:700;text-transform:uppercase}
.hca2-lesson > *{animation:hca2in .35s ease both}
@keyframes hca2in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* lightbox */
.hca2-zoom{border:0;padding:0;background:none;cursor:zoom-in;max-width:100%}
.hca2-lightbox{position:fixed;inset:0;background:rgba(14,25,48,.92);z-index:99999;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.hca2-lightbox img{max-width:95vw;max-height:82vh;border-radius:8px;box-shadow:0 12px 50px rgba(0,0,0,.5)}
.hca2-lightbox-cap{color:#e8edf7;font-size:14px;margin-top:12px;text-align:center;max-width:80ch}
.hca2-lightbox-x{position:absolute;top:16px;inset-inline-end:20px;background:var(--hca-gold);color:var(--hca-navy);border:0;border-radius:50%;width:38px;height:38px;font-size:16px;cursor:pointer}

/* tables on mobile */
.hca2-tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:14px 0}
.hca2-tablewrap .hca2-table{margin:0;min-width:480px}

/* steps */
.hca2-steps{background:#fff;border:1px solid var(--hca-line);border-radius:12px;padding:18px 20px;margin:16px 0;box-shadow:0 2px 10px rgba(22,38,63,.05)}
.hca2-steps h4{margin:0 0 10px;color:var(--hca-navy)}
.hca2-steps-dots{display:flex;gap:6px;margin-bottom:12px}
.hca2-dot{width:26px;height:6px;border:0;padding:0;border-radius:99px;background:var(--hca-line);cursor:pointer;transition:background .25s}
.hca2-dot-on{background:var(--hca-gold)}
.hca2-step-n{font-size:11px;color:var(--hca-grey);letter-spacing:0;text-transform:uppercase}
.hca2-step h5{margin:4px 0 6px;font-size:16px;color:var(--hca-navy)}
.hca2-steps-nav{display:flex;justify-content:space-between;margin-top:12px}
.hca2-btn-min{padding:8px 18px;font-size:13px}
.hca2-btn:disabled{opacity:.4;cursor:not-allowed}

/* match game */
.hca2-match{background:#fff;border:1px solid var(--hca-line);border-radius:12px;padding:18px 20px;margin:16px 0}
.hca2-match h4{margin:0 0 12px;color:var(--hca-navy)}
.hca2-match-cols{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.hca2-match-col{display:flex;flex-direction:column;gap:8px}
.hca2-chip{border:1.5px solid var(--hca-line);background:var(--hca-cream);border-radius:10px;padding:10px 12px;font-family:inherit;font-size:13.5px;cursor:pointer;text-align:start;transition:all .15s}
.hca2-chip:hover:not(.hca2-chip-ok){border-color:var(--hca-gold)}
.hca2-chip-sel{border-color:var(--hca-gold);background:#fff;box-shadow:0 0 0 2px rgba(201,162,75,.25)}
.hca2-chip-ok{border-color:#2e8b57;background:#f0faf4;color:#1e6b40;cursor:default}
.hca2-chip-bad{border-color:#c0392b;background:#fdf3f2;animation:hca2shake .3s}
@keyframes hca2shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.hca2-match-msg{margin-top:8px}

/* quiz explanations */
.hca2-explain{margin-top:8px;background:var(--hca-cream);border-inline-start:3px solid var(--hca-gold);border-radius:8px;padding:8px 12px;font-size:13px;color:var(--hca-navy)}

@media(prefers-reduced-motion:reduce){
  .hca2-lesson > *,.hca2-chip-bad{animation:none}
}

/* free-choice pool */
.hca2-poolused{background:var(--hca-cream);border:1px solid var(--hca-gold);border-radius:10px;padding:12px 16px;margin-bottom:14px;font-size:13.5px;line-height:1.8}
.hca2-poolused span{color:var(--hca-gold);font-weight:700}
.hca2-poolused small{color:var(--hca-grey)}

.hca2-cert-verify{font-size:11px;color:var(--hca-grey);margin-top:8px;letter-spacing:.3px}
@media print{.hca2-cert-verify{color:#888}}

/* ===== learner dashboard (mobile-first) ===== */
.hcad{max-width:820px;margin:0 auto;padding:8px 0}
.hcad-h{color:var(--hca-navy);font-size:22px;margin:0 0 16px}
.hcad-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px}
.hcad-stat{background:var(--hca-navy);color:#fff;border-radius:14px;padding:16px 10px;text-align:center}
.hcad-stat b{display:block;font-size:28px;color:var(--hca-gold);line-height:1}
.hcad-stat span{display:block;font-size:11.5px;margin-top:6px;opacity:.85;line-height:1.3}
.hcad-list{display:flex;flex-direction:column;gap:12px}
.hcad-card{display:block;background:#fff;border:1px solid var(--hca-line);border-radius:14px;padding:16px;text-decoration:none;color:var(--hca-ink);position:relative;transition:transform .15s,box-shadow .15s}
.hcad-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(22,38,63,.12)}
.hcad-card-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}
.hcad-card h3{font-size:16px;color:var(--hca-navy);margin:0 0 10px;line-height:1.4}
.hcad-bar{height:8px;background:var(--hca-line);border-radius:99px;overflow:hidden;margin:2px 0 10px}
.hcad-bar>div{height:100%;background:var(--hca-gold);border-radius:99px;transition:width .4s}
.hcad-done .hcad-bar>div{background:#2e8b57}
.hcad-card-foot{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.hcad-status{font-size:12px;font-weight:700;border-radius:6px;padding:2px 10px}
.hcad-st-done{background:#f0faf4;color:#1e6b40}
.hcad-st-prog{background:#fff6e6;color:#8a6d1f}
.hcad-st-open,.hcad-st-idle{background:var(--hca-cream);color:var(--hca-grey)}
.hcad-mini{font-size:12px;color:var(--hca-grey)}
.hcad-cert{margin-top:10px;font-size:12.5px;color:var(--hca-navy);background:var(--hca-cream);border-radius:8px;padding:8px 12px}
.hcad-cert b{letter-spacing:.4px}
.hcad-cert a{color:var(--hca-gold);font-weight:700;text-decoration:none;margin-inline-start:6px}
.hcad-freetag{flex:0 0 auto;font-size:11px;background:#f0faf4;color:#1e6b40;border-radius:6px;padding:2px 8px;font-weight:700}
.hcad-go{position:absolute;inset-inline-end:16px;bottom:16px;color:var(--hca-gold);font-weight:700;font-size:13px}
.hcad-empty{text-align:center;padding:40px 20px;background:#fff;border:1px solid var(--hca-line);border-radius:16px}
.hcad-empty-bell{font-size:40px}
.hcad-empty h2{color:var(--hca-navy);margin:8px 0 6px}
.hcad-empty p{color:var(--hca-grey);font-size:14px;margin:0 0 18px}
.hcad-cta{display:inline-block;background:var(--hca-gold);color:var(--hca-navy);border-radius:10px;padding:11px 22px;font-weight:700;text-decoration:none}
@media(max-width:640px){
  .hcad-stat b{font-size:24px}
  .hcad-go{position:static;display:block;margin-top:10px}
  .hcad-card-foot{gap:8px}
}

/* ===== mobile tap-target comfort (44px min) ===== */
@media(max-width:640px){
  .hca2-back{display:inline-flex;align-items:center;min-height:44px;padding:6px 4px}
  .hca2-lang button,.hca2-lang-on,.hca2-lang-off{min-height:40px;padding:8px 16px}
  .hca2-zoom{display:block;min-height:44px}
  .hca2-zoom img{display:block}
  .hca2-nav{min-height:48px}
  /* stat cards & dashboard cards already comfortable; ensure quiz radios are easy to tap */
  .hca2-opt{padding:12px 14px;min-height:48px;display:flex;align-items:center}
  .hca2-opt input{width:20px;height:20px}
}

/* mobile: stepper controls comfortable to tap */
@media(max-width:640px){
  .hca2-step-prev,.hca2-step-next{min-height:44px;padding:10px 18px}
  /* dots: keep 6px visual but expand hit area with padding */
  .hca2-dot{position:relative}
  .hca2-dot::after{content:'';position:absolute;inset:-14px -6px;}
  .hca2-steps-dots{padding:8px 0}
  .v-lang button{min-height:44px}
}

/* ---------- free-preview / paid-lesson prompt (v2.1) ---------- */
.hca2-paywall{max-width:520px;margin:30px auto;background:#fff;border:1px solid var(--hca2-line,#E5E0D5);border-radius:8px;padding:32px 28px;text-align:center}
.hca2-paywall h2{margin:6px 0 8px;font-size:20px;color:var(--hca2-navy,#16263F)}
.hca2-paywall p{margin:0 0 16px;color:#6B7280;font-size:14.5px;line-height:1.8}
.hca2-paywall input{width:100%;box-sizing:border-box;border:1px solid var(--hca2-line,#E5E0D5);border-radius:8px;padding:12px 14px;font-family:inherit;font-size:15px;text-align:center;margin-bottom:8px}
.hca2-paywall .hca2-btn{width:100%;margin-top:6px}
.hca2-nav.hca2-paid{opacity:.75}
.hca2-nav.hca2-paid .hca2-nav-n{background:transparent}