:root{
  --bg:#f6f7fb; --card:#ffffff; --ink:#171a2e; --muted:#555a75; --faint:#8b8fa3;
  --line:#e3e6f2; --purple:#6b5ce7; --blue:#3b82f6; --violet:#8b5cf6; --cyan:#0d8aa6;
  --green:#2e9e4f; --teal:#1899b4; --orange:#e08a2e;
  --grad:linear-gradient(135deg,#3b82f6,#8b5cf6);
  --shadow:0 6px 24px rgba(35,38,58,.07);
  --radius:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
:focus-visible{outline:3px solid var(--purple);outline-offset:2px;border-radius:6px}
body{margin:0;overflow-x:hidden;font-family:'Heebo',sans-serif;background:var(--bg);color:var(--ink);font-size:17px;line-height:1.75}
a{color:var(--purple);text-decoration:none}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
code{font-family:'JetBrains Mono',monospace;font-size:.88em;background:#eef0f7;border-radius:6px;padding:1px 6px;direction:ltr;unicode-bidi:embed}

header{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:26px;height:62px}
.brand{font-weight:900;font-size:17.5px;display:flex;align-items:center;gap:10px;cursor:pointer}
.brand .dot{width:12px;height:12px;border-radius:4px;background:var(--grad)}
.nav-links{display:flex;gap:20px}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;padding:8px 2px;position:relative;cursor:pointer}
.nav-links a.active{color:var(--ink);font-weight:700}
.nav-links a.active::after{content:"";position:absolute;bottom:-2px;right:0;left:0;height:3px;border-radius:2px;background:var(--grad)}
.nav-spacer{flex:1}
header.scrolled{box-shadow:var(--shadow)}

/* header sticky CTA (desktop) — hidden until the hero scrolls out of view */
.header-cta{display:none;opacity:0;transform:translateY(-4px);transition:opacity .2s,transform .2s}
.header-cta.show{display:inline-flex;opacity:1;transform:translateY(0)}

/* mobile nav (hamburger + dropdown panel) */
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;background:none;border:none;cursor:pointer;padding:0;flex:none}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-panel{display:flex;align-items:center;gap:20px}
.nav-backdrop{display:none}
/* desktop: push btn-profile/btn-auth to the far left of the header row, aligned with the
   left edge of the hero-panel stats card below (two independent mechanisms: nav-panel grows
   to fill the row so its own spacer can expand, and the auto margin is a direct fallback
   that works even if that growth doesn't happen for some reason) */
@media(min-width:721px){
  .nav-panel{flex:1}
  #btn-profile,#btn-auth{margin-inline-start:auto}
}

@media(max-width:720px){
  .header-cta{display:none !important}
  .nav-toggle{display:flex}
  .nav-panel{position:fixed;top:62px;right:0;left:0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    padding:6px 20px 16px;transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:transform .2s,opacity .2s;z-index:60}
  .nav-panel.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-panel .nav-links{flex-direction:column;gap:0}
  .nav-panel .nav-links a{padding:14px 4px;border-bottom:1px solid var(--line)}
  .nav-panel .nav-links a.active::after{display:none}
  .nav-panel .nav-spacer{display:none}
  .nav-panel #btn-auth{margin-top:12px}
  .nav-backdrop.open{display:block;position:fixed;inset:0;background:rgba(23,26,46,.25);z-index:55}
}

.hero{position:relative;padding:100px 0 110px;overflow:hidden}
.hero-glow{position:absolute;border-radius:100%;filter:blur(110px);z-index:0;pointer-events:none;opacity:.5}
.hero-glow.g1{width:480px;height:480px;background:#3b82f6;top:-220px;inset-inline-start:-140px}
.hero-glow.g2{width:380px;height:380px;background:#8b5cf6;top:120px;inset-inline-end:-120px}
.hero .container{position:relative;z-index:1}
.hero-grid{display:flex;align-items:center;gap:60px}
.hero-text{flex:1;min-width:0}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-weight:700;font-size:13px;letter-spacing:.1em;background:rgba(13,138,166,.08);border:1px solid rgba(13,138,166,.18);border-radius:99px;padding:6px 14px}
.hero h1{font-size:clamp(34px,6vw,66px);line-height:1.08;font-weight:900;margin:18px 0 20px;letter-spacing:-.01em}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.sub{color:var(--muted);font-size:19px;max-width:560px;margin:0 0 32px;line-height:1.6}
.hero p.sub strong{color:var(--ink)}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.hero-panel{flex:none;width:380px;background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:0 20px 50px rgba(35,38,58,.1);padding:36px;position:relative;overflow:hidden}
.hero-panel::before{content:'';position:absolute;top:-40px;inset-inline-end:-40px;width:140px;height:140px;border-radius:50%;background:rgba(139,92,246,.12);filter:blur(30px)}
.hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:28px 20px;position:relative}
.hstat b{display:block;font-size:34px;color:var(--ink);font-weight:900;margin-bottom:4px}
.hstat{font-size:12px;color:var(--faint);font-weight:700;letter-spacing:.03em}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:99px;padding:14px 28px;font-size:16px;font-weight:700;cursor:pointer;border:none;font-family:inherit;transition:transform .15s}
.btn:hover{transform:translateY(-1px) scale(1.02)}
.btn:disabled{opacity:.4;cursor:default;transform:none}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(107,92,231,.38)}
.btn-ghost{background:var(--card);color:var(--ink);border:1px solid var(--line)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:12px}
.btn-full{width:100%}
.btn-logout{color:#c0392b;border-color:#f6c6bf;background:#fdecea}
.btn-logout:hover{background:#fbdad6}
.btn-danger{background:#e5544a;color:#fff}
.btn-danger:hover{background:#d6483f}
.wave{display:none}
@media(max-width:860px){.hero-grid{flex-direction:column}.hero-panel{width:100%}}

.section{padding:52px 0}
.section h2{font-size:34px;font-weight:900;margin:0 0 8px}
.section .lead{color:var(--muted);margin:0 0 30px;max-width:760px;font-size:16px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px}
#home-tracks{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
#home-tracks .pcard{position:relative;overflow:hidden;padding:28px 26px 24px;border-top:3px solid transparent;transition:transform .2s,box-shadow .2s,border-color .2s;cursor:pointer}
#home-tracks .pcard:hover{transform:translateY(-6px);box-shadow:0 18px 36px rgba(35,38,58,.12)}
#home-tracks .pcard.t-purple{border-top-color:var(--purple)}
#home-tracks .pcard.t-blue{border-top-color:var(--blue)}
#home-tracks .pcard.t-cyan{border-top-color:var(--cyan)}
.ht-n{position:absolute;top:20px;left:22px;font-size:13px;font-weight:900;color:var(--faint);letter-spacing:.05em}
.ht-icon-row{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.ht-icon{flex:none;width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center}
.ht-icon svg{width:26px;height:26px}
.ht-name-he{font-size:14.5px;font-weight:700;color:var(--muted)}
.pcard.t-purple .ht-icon{background:linear-gradient(135deg,rgba(107,92,231,.14),rgba(139,92,246,.06));color:var(--purple)}
.pcard.t-blue .ht-icon{background:linear-gradient(135deg,rgba(59,130,246,.14),rgba(59,130,246,.05));color:var(--blue)}
.pcard.t-cyan .ht-icon{background:linear-gradient(135deg,rgba(13,138,166,.14),rgba(13,138,166,.05));color:var(--cyan)}
#home-tracks h3{font-size:20px}
.ht-more{display:flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--purple)}
.ht-arr{transition:transform .2s}
#home-tracks .pcard:hover .ht-arr{transform:translateX(-4px)}

.how{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:26px}
.how-step{position:relative}
.how-n{width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;font-weight:900;font-size:16px;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.how-step h3{font-size:17px;margin:0 0 6px}
.how-step p{color:var(--muted);font-size:14px;line-height:1.6;margin:0}

/* testimonials — static 4-up row, no animation. Accent color cycles purple/blue/cyan/purple,
   same palette the track cards above use, so the section reads as part of the same system. */
.testimonials h2{margin-bottom:30px}
.testi-track{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
@media(max-width:860px){.testi-track{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.testi-track{grid-template-columns:1fr}}
.testi-card{direction:rtl;background:var(--card);border:1px solid var(--line);border-top:3px solid var(--purple);
  border-radius:18px;box-shadow:var(--shadow);padding:26px 24px 20px;display:flex;flex-direction:column;
  transition:transform .2s,box-shadow .2s,border-color .2s}
.testi-card:nth-child(2){border-top-color:var(--blue)}
.testi-card:nth-child(3){border-top-color:var(--cyan)}
.testi-card:nth-child(4){border-top-color:var(--violet)}
.testi-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(35,38,58,.13)}
.testi-mark{font-size:52px;font-weight:900;line-height:1;margin-bottom:8px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  font-family:Georgia,serif;opacity:.9;user-select:none}
.testi-quote{font-size:15px;line-height:1.6;color:var(--ink);font-weight:500;margin:0 0 20px;flex:1}
.testi-meta{border-top:1px solid var(--line);padding-top:14px;margin-top:auto}
.testi-name{font-weight:700;font-size:13.5px}
.testi-role{font-weight:700;font-size:12.5px;color:var(--muted)}
.testi-company{color:var(--faint);font-size:11.5px;margin-top:1px}

/* pricing */
.currency-toggle{display:inline-flex;background:var(--bg);border:1px solid var(--line);border-radius:99px;padding:4px;margin-bottom:28px;gap:2px}
.cur-btn{border:none;background:none;padding:8px 18px;border-radius:99px;font-size:14px;font-weight:700;color:var(--muted);cursor:pointer}
.cur-btn.active{background:var(--card);color:var(--ink);box-shadow:var(--shadow)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px 26px;position:relative;display:flex;flex-direction:column}
.price-card.featured{border:2px solid transparent;background-image:linear-gradient(var(--card),var(--card)),var(--grad);background-origin:border-box;background-clip:padding-box,border-box}
.price-badge{position:absolute;top:-13px;right:24px;background:var(--grad);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:99px}
.price-card h3{margin:6px 0 14px;font-size:18px}
.price-amount{font-size:36px;font-weight:900}
.price-amount.price-cta-text{font-size:24px}
.price-sub{color:var(--muted);font-size:13px;margin-top:2px;margin-bottom:18px}
.price-features{list-style:none;padding:0;margin:0 0 24px;flex:1}
.price-features li{padding:8px 0 8px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.price-features li:first-child{border-top:none}
.price-refund{text-align:center;color:var(--faint);font-size:13.5px;margin-top:24px}
.cur-usd{display:none} /* JS toggles .cur-ils/.cur-usd display directly based on the selected currency */
@media(max-width:860px){.pricing-grid{grid-template-columns:1fr}}

/* checkout modal — track selection + payment, two steps in the same panel */
.checkout-body{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px 30px}
.checkout-body h3{margin:0 0 6px;font-size:22px}
.checkout-hint{color:var(--muted);font-size:13.5px;margin:0 0 22px}

.terms-scroll{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:18px 20px;
  max-height:280px;overflow-y:auto;font-size:13.5px;line-height:1.75;color:var(--ink);
  white-space:pre-wrap;margin-bottom:16px}
.terms-checkbox{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);
  font-weight:600;margin-bottom:18px;cursor:pointer}
.terms-checkbox input{margin-top:3px;flex:none;width:16px;height:16px;accent-color:var(--purple)}

.track-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}
.track-chip{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:22px 8px 18px;background:var(--bg);border:2px solid transparent;border-radius:16px;cursor:pointer;
  text-align:center;transition:border-color .15s,background .15s,transform .15s}
.track-chip:hover{transform:translateY(-2px)}
.track-chip-icon{width:42px;height:42px;border-radius:12px;background:var(--card);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);color:var(--purple);transition:background .15s,color .15s}
.track-chip .pcard-icon-svg{width:21px;height:21px}
.track-chip-name{font-size:12.5px;font-weight:700;line-height:1.3;color:var(--ink)}
.track-chip.selected{border-color:var(--purple);background:rgba(107,92,231,.08)}
.track-chip.selected .track-chip-icon{background:var(--grad);color:#fff;box-shadow:none}
.track-chip-check{position:absolute;top:10px;inset-inline-end:10px;width:19px;height:19px;border-radius:50%;
  border:1.5px solid var(--line);background:var(--card)}
.track-chip.selected .track-chip-check{background:var(--grad);border-color:transparent}
.track-chip.selected .track-chip-check::after{content:'✓';display:flex;align-items:center;justify-content:center;
  width:100%;height:100%;color:#fff;font-size:11px;font-weight:900}
@media(max-width:520px){.track-grid{grid-template-columns:repeat(2,1fr)}}

.checkout-summary{display:flex;align-items:baseline;justify-content:center;gap:10px;text-align:center;
  padding-top:18px;border-top:1px dashed var(--line);margin-bottom:14px}
.checkout-total{font-size:32px;font-weight:900}
.checkout-total-sub{color:var(--muted);font-size:13.5px}
.checkout-discount{text-align:center;color:#1d7a3f;background:#e8f9ee;font-weight:700;font-size:12.5px;
  padding:6px 14px;border-radius:99px;width:fit-content;margin:0 auto 18px}

.checkout-back{background:none;border:none;color:var(--muted);font-size:13.5px;font-weight:600;cursor:pointer;padding:0;margin-bottom:14px}
.checkout-back:hover{color:var(--purple)}
.checkout-summary-line{background:var(--bg);border-radius:12px;padding:12px 16px;font-size:14px;font-weight:600;margin-bottom:16px;display:flex;justify-content:space-between}
#payment-element{margin-top:6px}
.checkout-secure{color:var(--faint);font-size:12px;text-align:center;margin-top:14px;line-height:1.5}
.checkout-success-icon{width:56px;height:56px;border-radius:50%;background:var(--grad);color:#fff;font-size:28px;
  font-weight:900;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
#checkout-step-success{text-align:center}

.section.faq h2{margin-bottom:26px}
.faq-grid{display:grid;grid-template-columns:1fr;gap:14px;max-width:760px;margin:0 auto;padding:0 20px}
@media(max-width:720px){.faq-grid{padding:0 16px}}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 22px;box-shadow:var(--shadow);transition:border-color .15s}
.faq-item[open]{border-color:var(--purple)}
.faq-item summary{cursor:pointer;font-weight:700;font-size:15.5px;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';flex:none;width:22px;height:22px;border-radius:50%;background:var(--bg);color:var(--purple);font-weight:900;display:flex;align-items:center;justify-content:center;transition:transform .2s}
.faq-item[open] summary::after{content:'+';transform:rotate(45deg);background:rgba(107,92,231,.12)}
.faq-item p{color:var(--muted);font-size:14px;line-height:1.6;margin:12px 0 0}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;box-shadow:var(--shadow);position:relative;transition:transform .15s,border-color .15s}
.pcard.enabled{cursor:pointer}
.pcard.enabled:hover{transform:translateY(-4px);border-color:var(--purple)}
.pcard .num{color:var(--violet);font-weight:700;font-size:13px;letter-spacing:.1em}
.pcard h3{margin:10px 0 6px;font-size:19px}
.pcard p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.6}
.pcard .meta{margin-top:12px;font-size:13px;color:var(--faint)}
.pcard .progress{margin-top:12px}
.badge-soon{position:absolute;top:14px;left:14px;background:var(--bg);border:1px solid var(--line);color:var(--faint);font-size:11.5px;border-radius:99px;padding:2px 10px}
.badge-go{position:absolute;top:14px;left:14px;background:var(--grad);color:#fff;font-size:11.5px;border-radius:99px;padding:2px 10px;font-weight:700}

/* ---- personal area (profile) ---- */
.profile-wrap{max-width:820px;margin:0 auto}
.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:34px}
@media(max-width:720px){.profile-grid{grid-template-columns:1fr}}
.profile-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.profile-card h3{margin:0 0 16px;font-size:16px}
.profile-since{color:var(--faint);font-size:12.5px;margin:-6px 0 14px}
.profile-msg{font-size:13px;font-weight:600;min-height:18px;margin-top:8px}
.profile-msg.ok{color:#1d7a3f}
.profile-msg.err{color:#c0392b}
.profile-section-title{margin:34px 0 16px;font-size:18px}
.profile-course-row{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);
  border-radius:16px;box-shadow:var(--shadow);padding:18px 20px;margin-bottom:14px}
.profile-course-icon{flex:none;width:44px;height:44px;border-radius:12px;background:var(--bg);display:flex;align-items:center;justify-content:center;color:var(--purple)}
.profile-course-icon .pcard-icon-svg{width:22px;height:22px}
.profile-course-info{flex:1;min-width:0}
.profile-course-name{font-weight:700;font-size:14.5px;margin-bottom:8px}
.profile-course-name-en{font-weight:400;color:var(--faint);font-size:12.5px}
.profile-course-meta{font-size:12px;color:var(--faint);display:flex;gap:8px;flex-wrap:wrap}
.profile-score{color:var(--muted);font-weight:600}
.profile-score.muted{color:var(--faint);font-weight:400}
.profile-cert-row{display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);
  padding:14px 20px;margin-bottom:12px;font-size:14px;font-weight:600}
.profile-cert-date{color:var(--faint);font-weight:400;font-size:12.5px;margin-inline-end:auto}

/* ---- rich course cards on the dashboard (one course = one full page, not a small tile) ---- */
#dash-cards{display:flex;flex-direction:column;gap:26px;max-width:920px}
#dash-cards .pcard{padding:36px 40px}
.pcard-top{display:flex;align-items:flex-start;gap:18px;margin-bottom:6px}
.pcard-icon{flex:none;width:64px;height:64px;border-radius:18px;background:var(--bg);display:flex;align-items:center;justify-content:center;color:var(--purple)}
.pcard-icon-svg{width:32px;height:32px}
.pcard-headline{flex:1}
.pcard-headline .num{font-size:12px}
.pcard-headline h3{margin:2px 0 0;font-size:30px;text-align:start}
.pcard-top .badge-go,.pcard-top .badge-soon{position:static;flex:none;align-self:flex-start;margin-top:4px}
.pcard-sub{font-size:16px;margin-bottom:14px!important}
.pcard-line{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:6px}
.pcard-ico{flex:none}
.pcard-outcomes{background:var(--bg);border-radius:14px;padding:16px 20px;margin:14px 0}
.pcard-outcomes-title{font-size:13.5px;font-weight:700;color:var(--ink);margin-bottom:8px}
.pcard-outcomes ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:7px}
.pcard-outcomes li{font-size:14px;color:var(--muted);line-height:1.5;padding-inline-start:22px;position:relative}
.pcard-outcomes li::before{content:'✓';position:absolute;inset-inline-start:0;color:var(--green);font-weight:900}
.pcard-cta{width:100%;margin-top:16px}
.pcard-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:16px 0}
.pstat{background:var(--bg);border-radius:12px;padding:12px 6px;text-align:center;font-size:12px;color:var(--muted)}
.pstat b{display:block;font-size:21px;color:var(--ink);font-weight:900;margin-bottom:2px}
.pcard-project{margin:14px 0 0}
.pcard-chapters{margin:14px 0;font-size:14px}
.pcard-chapters summary{cursor:pointer;font-weight:700;color:var(--purple);list-style:none}
.pcard-chapters summary::-webkit-details-marker{display:none}
.pcard-chapters summary::before{content:'▸';display:inline-block;margin-inline-end:6px;transition:transform .15s}
.pcard-chapters[open] summary::before{transform:rotate(90deg)}
.pcard-chapters ul{margin:12px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.pcard-chapters li{display:flex;align-items:flex-start;gap:10px;color:var(--muted);padding:2px 0}
.ch-n{flex:none;margin-top:1px;width:22px;height:22px;border-radius:50%;background:var(--bg);color:var(--faint);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}
.ch-t{color:var(--ink);font-weight:600;font-size:14px}
.ch-d{font-size:13px;color:var(--muted);margin-top:2px;line-height:1.5}

/* about */
.about{border-top:1px solid var(--line)}
.bio-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;margin-bottom:20px}
.bio-card{background:var(--card);border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 32px rgba(35,38,58,.08);padding:40px 34px;text-align:center;display:flex;flex-direction:column;align-items:center}
.bio-avatar{width:88px;height:88px;border-radius:26px;background:var(--grad);color:#fff;font-size:34px;font-weight:900;display:flex;align-items:center;justify-content:center;margin-bottom:18px;position:relative;overflow:hidden;box-shadow:0 12px 26px rgba(107,92,231,.3)}
.bio-avatar img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:26px}
.bio-avatar.alt{background:linear-gradient(135deg,#0d8aa6,#3b82f6)}
.bio-card h3{margin:0 0 2px;font-size:22px}
.bio-role{color:var(--cyan);font-weight:700;font-size:13.5px;margin-bottom:14px}
.bio-card p{color:#2b2f4a;font-size:14.5px;margin:0;line-height:1.7}

/* login */
.login-wrap{display:flex;justify-content:center;padding:70px 0 110px}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 38px;width:420px;max-width:100%}
.login-card h2{margin:6px 0 6px;font-size:26px;font-weight:900}
.login-sub{color:var(--muted);font-size:14.5px;margin:0 0 20px}
.fld{display:block;margin-bottom:14px}
.fld span{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:6px}
.fld input,.fld select,.fld textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;font-family:inherit;font-size:16px;background:#fafbfe;color:var(--ink)}
.fld input:focus,.fld select:focus,.fld textarea:focus{border-color:var(--purple);outline:none}
.fld textarea{resize:vertical;line-height:1.5}
.login-err{color:#c0392b;font-size:14px;min-height:22px;margin-top:10px;font-weight:600}
.dev-hint{margin-top:8px;font-size:13px;color:var(--faint);font-family:'JetBrains Mono',monospace;direction:ltr;text-align:left}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
.contact-text h2{margin:0 0 8px}
.contact-direct{color:var(--muted);font-size:14.5px;margin-top:16px}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.contact-success{font-size:15.5px;line-height:1.7;font-weight:600;color:var(--ink);text-align:center;padding:20px 0}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr}}
.btn-google{display:flex;align-items:center;justify-content:center;gap:10px;background:#fff;color:#3c4043;border:1.5px solid var(--line)}
.btn-google:hover{background:#f8f9fa}
.btn-google svg{flex:none}
.login-divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--faint);font-size:12.5px;font-weight:700}
.login-divider::before,.login-divider::after{content:'';flex:1;height:1px;background:var(--line)}

/* rate-limit warning toast */
.rl-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:#2b2f4a;color:#fff;padding:10px 20px;border-radius:999px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:200}
.rl-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* player */
.player-wrap{display:grid;grid-template-columns:300px 1fr;gap:28px;padding:32px 0 70px;align-items:start}
/* free-sample mode: no lesson list, no progress — just the slides + a purchase CTA at the end */
#view-player.sample-mode .player-wrap{grid-template-columns:1fr;max-width:760px;margin:0 auto}
#view-player.sample-mode .sidebar,#view-player.sample-mode .chapters-toggle{display:none}
.sidebar{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;position:sticky;top:80px;max-height:calc(100vh - 100px);overflow:auto}
.sidebar h3{margin:0 0 2px;font-size:16.5px}
.chapters-toggle{display:none}
.sidebar-backdrop{display:none}

@media(max-width:900px){
  .chapters-toggle{display:inline-flex}
  .sidebar{position:fixed;left:0;right:0;bottom:0;top:auto;max-height:70vh;border-radius:20px 20px 0 0;
    transform:translateY(105%);transition:transform .25s;z-index:150;box-shadow:0 -10px 30px rgba(23,26,46,.18)}
  .sidebar::before{content:'';display:block;width:36px;height:4px;border-radius:2px;background:var(--line);margin:0 auto 12px}
  .sidebar.sheet-open{transform:translateY(0)}
  .sidebar-backdrop.open{display:block;position:fixed;inset:0;background:rgba(23,26,46,.3);z-index:140}
}
.track-meta{color:var(--faint);font-size:12.5px;margin-bottom:14px}
.progress{height:8px;background:var(--bg);border-radius:99px;overflow:hidden;margin-bottom:5px}
.progress>div{height:100%;background:var(--grad);border-radius:99px;transition:width .4s}
.progress-label{font-size:12px;color:var(--faint);margin-bottom:14px}
.les-head{display:flex;flex-direction:column;gap:6px;padding:10px 12px;border-radius:10px;cursor:pointer;font-size:14px;color:var(--muted)}
.les-head:hover{background:var(--bg)}
.les.current>.les-head{background:#efeafd;color:var(--ink);font-weight:700}
.les-title-row{display:flex;align-items:center;gap:9px}
.les-title{flex:1;min-width:0;line-height:1.4}
.les-check{width:20px;height:20px;border-radius:50%;border:2px solid var(--line);flex:none;display:flex;align-items:center;justify-content:center;font-size:11px;color:#fff}
.les.done .les-check{background:var(--green);border-color:var(--green)}
.les-meta-row{display:flex;align-items:center;gap:8px;padding-inline-start:29px;font-weight:400}
.les-count{font-size:11.5px;color:var(--faint)}
.les-quiz{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--purple);background:#f3effc;border-radius:8px;padding:2px 8px;white-space:nowrap}
.les-quiz svg{width:12px;height:12px;flex:none}
.les-quiz.full{color:var(--green);background:#eef8ef}

.stage{min-width:0}
.copy-warning{position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--bg);
  border-top:1px solid var(--line);color:var(--faint);font-size:11px;font-weight:600;
  text-align:center;padding:8px 16px}
.slide-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 46px;min-height:480px;display:flex;flex-direction:column}
.loading{color:var(--faint);margin:auto}
.slide-top{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.crumb{color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.06em}
.slide-count{color:var(--faint);font-size:12.5px;margin-inline-start:auto}
.badge-proj{background:#e9f7f9;color:#0f6e83;border:1px solid #bfe6ee;font-size:12px;font-weight:700;border-radius:99px;padding:2px 12px}
.badge-ex{background:#f3effc;color:#5443c9;border:1px solid #ddd3fa;font-size:12px;font-weight:700;border-radius:99px;padding:2px 12px}
.slide-card h1{font-size:28px;margin:0 0 16px;font-weight:900;line-height:1.3}
.slide-body{flex:1}
.slide-body p{color:#2b2f4a;margin:0 0 12px}
.slide-body ul,.slide-body ol{margin:0 0 12px;padding-inline-start:22px;color:#2b2f4a}
.slide-body li{margin-bottom:6px}
.slide-body table{width:100%;border-collapse:collapse;font-size:14.5px;margin:14px 0;display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
.slide-body th{background:var(--ink);color:#fff;text-align:right;padding:9px 13px;font-weight:500}
.slide-body td{border-bottom:1px solid var(--line);padding:9px 13px;vertical-align:top}
.slide-body tr:nth-child(even) td{background:#fafbfe}
.big-idea{font-size:22px;font-weight:700;line-height:1.6;padding:18px 0;color:var(--ink)}
.doc{background:#fafbfe;border:1px solid var(--line);border-radius:12px;padding:16px 20px;font-size:14.5px;margin:14px 0}
.doc .doc-title{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--faint);margin-bottom:8px;direction:ltr;text-align:left}
.docmono{font-family:'JetBrains Mono',monospace;font-size:13px;direction:ltr;text-align:left;white-space:pre-wrap;background:var(--ink);color:#d8ddf0;border-radius:12px;padding:16px 20px;margin:14px 0;line-height:1.6}
.flow{display:flex;flex-wrap:wrap;gap:6px 8px;align-items:center;font-size:14px;font-weight:500;margin:14px 0}
.flow .step{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:6px 13px;white-space:nowrap}
.flow .arr{color:var(--purple);font-weight:900}
.box{border-radius:12px;padding:15px 18px 12px;margin:14px 0;font-size:15px}
.box .tag{display:inline-block;font-size:11.5px;font-weight:700;color:#fff;border-radius:7px;padding:2px 11px;margin-bottom:7px}
.box p{margin:0;color:#2b2f4a}
.box.principle{background:#eef8ef;border-inline-start:5px solid var(--green)} .box.principle .tag{background:var(--green)}
.box.tip{background:#f3effc;border-inline-start:5px solid var(--purple)} .box.tip .tag{background:var(--purple)}
.box.field{background:#e9f7f9;border-inline-start:5px solid var(--teal)} .box.field .tag{background:var(--teal)}
.box.caution{background:#fdf3e7;border-inline-start:5px solid var(--orange)} .box.caution .tag{background:var(--orange)}
.term{border-bottom:2px dotted var(--purple);cursor:help;position:relative}
.term:hover::after{content:attr(data-def);position:absolute;bottom:130%;right:0;background:var(--ink);color:#fff;font-size:13px;line-height:1.6;padding:10px 14px;border-radius:10px;width:270px;z-index:10;font-weight:400}
.ladder-step{display:flex;gap:12px;align-items:flex-start;margin:10px 0}
.ladder-step .ln{width:34px;height:34px;border-radius:50%;background:var(--purple);color:#fff;font-weight:900;display:flex;align-items:center;justify-content:center;flex:none}
.ladder-step .lt{font-weight:700}
.ladder-step .ld{color:var(--muted);font-size:14.5px}

.exercise textarea{width:100%;min-height:130px;border:1.5px solid var(--line);border-radius:12px;padding:14px 16px;font-family:inherit;font-size:15px;line-height:1.7;resize:vertical;background:#fafbfe;color:var(--ink)}
.exercise textarea:focus{border-color:var(--purple);outline:none}
.ex-actions{display:flex;gap:10px;margin-top:12px;align-items:center;flex-wrap:wrap}
.saved-note{color:var(--green);font-size:13.5px;font-weight:600;opacity:0;transition:opacity .3s}
.saved-note.show{opacity:1}
.model-answer{display:none;margin-top:14px}
.model-answer.show{display:block}

.q-item{border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:12px 0}
.q-item .q{font-weight:700;margin-bottom:10px}
.opt{display:flex;gap:10px;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;margin:7px 0;cursor:pointer;font-size:14.5px;color:var(--muted);min-height:44px;align-items:center}
.opt:hover{border-color:var(--purple)}
.opt.sel-right{border-color:var(--green);background:#eef8ef;color:var(--ink)}
.opt.sel-wrong{border-color:#c0392b;background:#fdecea;color:var(--ink)}
.feedback{font-size:14px;margin-top:8px;display:none;padding:10px 14px;border-radius:8px}
.feedback.show{display:block}
.feedback.ok{background:#eef8ef;color:#1d6b36}
.feedback.no{background:#fdecea;color:#922b21}

.slide-nav{display:flex;align-items:center;gap:14px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
.dots{flex:1;display:flex;gap:5px;flex-wrap:wrap}
.dots span{width:9px;height:9px;padding:7px;margin:-7px;background-clip:content-box;border-radius:50%;background-color:var(--line);cursor:pointer}
.dots span.on{background-color:var(--purple)}
.dots span.seen{background-color:#c6bdf5}
.kbd-hint{color:var(--faint);font-size:12px}
.done-banner{background:var(--grad);border-radius:var(--radius);color:#fff;text-align:center;padding:46px 30px}
.done-banner h2{margin:0 0 10px;font-size:28px}
.done-banner p{margin:0 0 22px;opacity:.92}
.final-score{background:rgba(255,255,255,.14);border-radius:16px;padding:22px;margin:0 0 22px}
.final-score-pct{font-size:44px;font-weight:900}
.final-score-label{font-size:14px;opacity:.92;margin-top:4px}
.btn-white{background:#fff;color:var(--ink)}
.cert-cta{display:flex;flex-direction:column;align-items:center;gap:14px;margin:0 0 22px}
.cert-check{display:flex;align-items:center;gap:8px;font-size:13.5px;opacity:.92;cursor:pointer}
.cert-hint{font-size:13.5px;opacity:.85;margin:0 0 22px}

footer{border-top:1px solid var(--line);padding:26px 0;color:var(--faint);font-size:13px;margin-top:36px}
.footer-row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.footer-legal a{color:var(--faint)}
.footer-legal a:hover{color:var(--purple)}
.view{display:none}.view.on{display:block}

/* syllabus modal */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(23,26,46,.55);backdrop-filter:blur(3px);z-index:100;align-items:flex-start;justify-content:center;padding:6vh 20px;overflow-y:auto}
.modal-overlay.on{display:flex}
.modal-panel{position:relative;width:100%;max-width:720px;background:transparent;margin-bottom:6vh}
.modal-panel .pcard{max-width:none}
.modal-close{position:absolute;top:-14px;inset-inline-end:-14px;width:36px;height:36px;border-radius:50%;background:var(--ink);color:#fff;border:3px solid var(--bg);font-size:15px;cursor:pointer;z-index:2}
.modal-close:hover{background:var(--purple)}

/* logout confirm — small centered dialog, not a full-width modal */
.logout-panel{max-width:380px;margin-top:12vh}
.logout-body{text-align:center}
.logout-body h3{margin-bottom:6px}
.logout-actions{display:flex;gap:10px;margin-top:20px}
@media(max-width:900px){.player-wrap{grid-template-columns:1fr}.slide-card{padding:26px 20px}}

/* ---- admin back-office ---- */
.admin-wrap{max-width:1080px;margin:0 auto}
.admin-tabs{display:flex;gap:8px;margin-bottom:26px;border-bottom:1px solid var(--line)}
.admin-tab{background:none;border:none;font-family:inherit;font-size:14.5px;font-weight:700;color:var(--muted);
  padding:10px 16px;cursor:pointer;position:relative;margin-bottom:-1px}
.admin-tab.active{color:var(--ink)}
.admin-tab.active::after{content:'';position:absolute;bottom:-1px;right:0;left:0;height:3px;border-radius:2px 2px 0 0;background:var(--grad)}
.admin-kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-bottom:30px}
.admin-kpi{background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:16px 14px}
.admin-charts{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:10px}
@media(max-width:720px){.admin-charts{grid-template-columns:1fr}}
.admin-chart-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px}
.admin-chart-card h3{margin:0 0 16px;font-size:14px;color:var(--muted)}
.admin-chart{display:flex;align-items:flex-end;gap:2px;height:150px}
.admin-bar-col{flex:1;display:flex;flex-direction:column;align-items:center;min-width:3px;height:100%}
.admin-bar-track{flex:1;width:100%;display:flex;align-items:flex-end}
.admin-bar{width:100%;background:var(--grad);border-radius:3px 3px 0 0;min-height:2px}
.admin-bar-label{font-size:9px;color:var(--faint);margin-top:6px;white-space:nowrap}
.admin-table-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.admin-table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:640px}
.admin-table th{text-align:right;padding:12px 16px;color:var(--muted);font-weight:700;font-size:12.5px;border-bottom:1px solid var(--line);white-space:nowrap}
.admin-table td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--ink);vertical-align:middle}
.admin-table tbody tr:last-child td{border-bottom:none}
.admin-row{cursor:pointer}
.admin-row:hover td{background:var(--bg)}
.admin-row.flagged td:first-child{box-shadow:inset 3px 0 0 var(--orange)}
.admin-role-badge{display:inline-block;font-size:11.5px;font-weight:700;border-radius:99px;padding:3px 11px}
.admin-role-badge.role-learner{background:#eef0f7;color:var(--muted)}
.admin-role-badge.role-admin{background:#f3effc;color:var(--purple)}
.admin-role-badge.role-blocked{background:#fdecea;color:#c0392b}
.admin-invite-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 24px;margin-bottom:26px}
.admin-invite-card h3{margin:0 0 14px;font-size:15px}
.admin-invite-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.admin-invite-row input[type="email"],.admin-invite-row input[type="text"]{flex:1;min-width:160px;border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;font-family:inherit;font-size:14px;background:#fafbfe;color:var(--ink)}
.admin-invite-row select{border:1.5px solid var(--line);border-radius:10px;padding:9px 12px;font-family:inherit;font-size:14px;background:#fafbfe;color:var(--ink)}
.admin-checkbox{display:flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--muted);cursor:pointer;white-space:nowrap}
.admin-checkbox input{accent-color:var(--purple);width:15px;height:15px}
.admin-search{width:100%;max-width:360px;border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;
  font-family:inherit;font-size:14px;background:#fafbfe;color:var(--ink);margin-bottom:14px}
.admin-search:focus{border-color:var(--purple);outline:none}
.admin-msg{font-size:13px;font-weight:600;min-height:18px;margin-top:8px}
.admin-msg.ok{color:#1d7a3f}
.admin-msg.err{color:#c0392b}
.admin-meta-line{font-size:12px;color:var(--faint);margin:10px 0 0}
.admin-detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:10px}
@media(max-width:900px){.admin-detail-grid{grid-template-columns:1fr}}
.admin-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.admin-chip{display:inline-flex;align-items:center;gap:6px;background:#f3effc;color:var(--purple);font-size:12.5px;font-weight:700;border-radius:99px;padding:5px 8px 5px 14px}
.admin-chip-empty{color:var(--faint);font-size:13px}
.admin-chip-x{background:rgba(107,92,231,.16);color:var(--purple);border:none;border-radius:50%;width:18px;height:18px;font-size:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex:none}
.admin-chip-x:hover{background:var(--purple);color:#fff}
.admin-courses-progress{display:flex;flex-direction:column;gap:12px;margin-bottom:10px}
.admin-course-row{display:flex;align-items:center;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:14px 18px}
.admin-course-name{flex:none;width:160px;font-weight:700;font-size:13.5px}
.admin-course-row .progress{flex:1;margin:0}
.admin-course-meta{flex:none;font-size:12px;color:var(--faint);white-space:nowrap}
@media(max-width:720px){.admin-course-row{flex-wrap:wrap}.admin-course-name{width:100%}.admin-course-row .progress{order:3;width:100%}}
.admin-activity-list{display:flex;flex-direction:column;gap:2px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px 20px;max-height:360px;overflow-y:auto}
.admin-activity-row{display:flex;gap:14px;align-items:center;padding:9px 0;border-bottom:1px solid var(--line);font-size:12.5px}
.admin-activity-row:last-child{border-bottom:none}
.admin-activity-action{flex:none;width:120px;font-weight:700;color:var(--purple)}
.admin-activity-detail{flex:1;min-width:0;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.admin-activity-ts{flex:none;color:var(--faint);font-family:'JetBrains Mono',monospace;font-size:11px;direction:ltr}
.admin-lead-msg{max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.admin-lead-status{border:1.5px solid var(--line);border-radius:10px;padding:6px 10px;font-family:inherit;font-size:12.5px;background:#fafbfe;color:var(--ink)}

/* mobile bottom CTA bar — home view only */
.mobile-cta-bar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;background:var(--card);
  border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(23,26,46,.08);
  padding:12px 20px calc(12px + env(safe-area-inset-bottom));
  align-items:center;justify-content:space-between;gap:14px;
  transform:translateY(100%);transition:transform .25s}
.mobile-cta-bar span{font-size:14px;font-weight:700}
.mobile-cta-bar.show{transform:translateY(0)}
@media(min-width:721px){.mobile-cta-bar{display:none !important}}
@media(max-width:720px){.mobile-cta-bar{display:flex}}