/* Shamms – Premium-Darstellung für /lehrer-studenten/index.html
   Eigene Datei: die untergeordneten Produktseiten bleiben unverändert.
   Es werden nur echte Vorschaubilder aus den PDF-Dateien verwendet. */

/* ============ Hero ============ */
/* Die Navigation ist position:fixed – oben genug Platz freihalten. */
.hero-bd{padding:86px 0 6px}
.hero-bd-in{display:grid;grid-template-columns:1fr;gap:26px}
.hero-bd-txt{max-width:58ch}
.hero-bd .bd-pill{white-space:nowrap}
.hero-bd-cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-bd-cta .btn{flex:1 1 100%;justify-content:center;white-space:nowrap}
.hero-bd-vis{display:flex;flex-direction:column;align-items:center}
.hero-cap{margin-top:12px;font-size:12px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);text-align:center}

/* ============ Geräterahmen – reines CSS, kein Bild ============ */
.dev{position:relative;width:100%;max-width:640px;background:#1B1A1B;
  border-radius:20px;padding:11px;box-shadow:var(--shadow-m)}
.dev::after{content:"";position:absolute;left:50%;bottom:4px;width:52px;height:3px;
  transform:translateX(-50%);border-radius:99px;background:rgba(255,255,255,.24)}
.dev-screen{border-radius:11px;overflow:hidden;background:#fff}
.dev-screen img{display:block;width:100%;height:auto}

/* ============ Produktblöcke ============ */
.pblock{padding:clamp(36px,6vw,62px) 0;border-top:1px solid var(--line)}
.pblock-in{display:grid;grid-template-columns:1fr;gap:26px;align-items:center}
.pflag{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ink);background:var(--yellow);
  border-radius:99px;padding:5px 12px;margin-bottom:12px}
.pflag::before{content:"";width:6px;height:6px;border-radius:99px;background:var(--ink)}
.ph2{font-size:clamp(24px,4.4vw,34px);font-weight:900;line-height:1.1;
  letter-spacing:-.015em;margin:0 0 6px}
.psub{color:var(--muted);font-size:15px;margin:0 0 14px}
.pblock-txt .bd-list li{font-size:14px}

/* ============ Stapel aus echten Seiten (Arbeitsblätter) ============ */
.stack{display:flex;flex-direction:column;align-items:center;width:100%;max-width:540px;
  margin:0 auto}
.stack-i{border:1px solid var(--line-strong);border-radius:10px;overflow:hidden;
  background:#fff;box-shadow:var(--shadow-s)}
.stack-i + .stack-i{margin-top:-16px}
.stack-i img{display:block;width:100%;height:auto}
.stack-i:nth-child(1){width:86%;z-index:3}
.stack-i:nth-child(2){width:93%;z-index:2}
.stack-i:nth-child(3){width:100%;z-index:1}

/* ============ Vorschau-Galerie ============ */
.gal{margin-top:26px}
.gal-h{font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);margin:0 0 12px}
.gal-row{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;padding-bottom:6px}
.gal-row::-webkit-scrollbar{height:0}
.gal-thumb{flex:0 0 86%;scroll-snap-align:start;text-decoration:none;color:var(--ink);
  display:block}
.gal-thumb img{display:block;width:100%;height:auto;border:1px solid var(--line-strong);
  border-radius:12px;background:#fff;box-shadow:var(--shadow-s)}
.gal-thumb span{display:block;margin-top:8px;font-size:13px;font-weight:600;color:var(--muted)}
.gal-hint{font-size:12.5px;color:var(--muted);margin:4px 0 0}

/* ============ So funktioniert es ============ */
.how{border-top:1px solid var(--line);background:var(--cream-2)}
.how-grid{list-style:none;display:grid;grid-template-columns:1fr;gap:14px;
  margin:24px 0 0;padding:0}
.how-card{background:var(--paper);border:1px solid var(--line-strong);
  border-radius:var(--r-md);padding:20px}
.how-ic{width:46px;height:46px;border-radius:13px;background:var(--yellow);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.how-ic svg{width:23px;height:23px;fill:none;stroke:var(--ink);stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round}
.how-card b{display:block;font-size:16.5px;font-weight:800;margin-bottom:6px}
.how-card span{display:block;font-size:14.5px;line-height:1.6;color:var(--muted)}

/* ============ Abschluss-CTA ============ */
.endcta{padding-bottom:clamp(46px,7vw,72px)}
.endcta-in{background:var(--ink);color:#fff;border-radius:var(--r-lg);
  padding:34px 22px;text-align:center}
.endcta-in h2{color:#fff;font-size:clamp(22px,5vw,33px);font-weight:900;
  line-height:1.12;letter-spacing:-.015em;margin:0 0 12px}
.endcta-in p{color:rgba(255,255,255,.72);font-size:15.5px;line-height:1.65;
  max-width:46ch;margin:0 auto}
.endcta-btns{display:flex;flex-direction:column;gap:10px;margin-top:24px}
.endcta-btns .btn{justify-content:center;white-space:nowrap}

/* ============ Tablet ============ */
@media(min-width:760px){
  .hero-bd{padding:98px 0 10px}
  .hero-bd-cta .btn{flex:0 0 auto}
  .how-grid{grid-template-columns:repeat(3,1fr);gap:18px}
  .gal-row{overflow:visible;flex-wrap:wrap;gap:16px}
  /* 2 statt 4 je Reihe: die feinen Linien der Seiten bleiben erkennbar */
  .gal-thumb{flex:0 0 calc((100% - 16px)/2)}
  .gal-hint{display:none}
  .endcta-btns{flex-direction:row;justify-content:center}
  .endcta-in{padding:52px 40px}
}

/* ============ Desktop ============ */
@media(min-width:960px){
  .hero-bd-in{grid-template-columns:1.02fr 1fr;gap:52px;align-items:center}
  .hero-bd-vis{align-items:flex-end}
  .pblock-in{grid-template-columns:1.04fr 1fr;gap:54px}
  .pblock.alt .pblock-vis{order:2}
}