/* =====================================================================
   hochschuldidaktik-online – Corporate Design (Hanke Teachertraining)
   Schrift: Open Sans · Hauptfarbe HTT-Blue #0762C8
   ===================================================================== */
:root{
  --htt-blue:#0762C8;
  --dark-blue:#054995;
  --lapis:#2660A4;
  --orange:#BA2D0B;
  --light-blue:#5F8DD3;
  --saffron:#F39237;
  --smoke:#EDF7F6;
  --eggshell:#EEECE1;
  --ink:#181716;
  --gray:#524F4C;
  --medium:#102E40;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Open Sans',system-ui,-apple-system,sans-serif;color:var(--ink);line-height:1.6;background:#fff;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section--smoke{background:var(--smoke);}
.section--eggshell{background:var(--eggshell);}
h1,h2,h3{letter-spacing:-.01em;}
.prose{max-width:780px;margin:0 auto;}
.prose p{color:var(--gray);margin-bottom:16px;}
.prose h2{color:var(--medium);font-size:clamp(1.3rem,2.2vw,1.7rem);margin:32px 0 12px;}
.prose h3{color:var(--htt-blue);font-size:1.15rem;margin:24px 0 10px;}
.prose ul{margin:0 0 16px 22px;color:var(--gray);}
.prose ul li{margin-bottom:8px;}
.prose a{color:var(--htt-blue);font-weight:600;}
.prose a:hover{color:var(--dark-blue);}
.note{background:var(--smoke);border:1px solid var(--light-blue);border-radius:12px;padding:18px 22px;color:var(--medium);font-size:.95rem;margin:22px 0;}

/* ---------- Website-Familie-Leiste ---------- */
.family-bar{background:var(--medium);color:#fff;font-size:.82rem;}
.family-bar .container{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap;}
.family-bar .fam-label{color:var(--light-blue);font-weight:600;letter-spacing:.02em;}
.family-bar nav{display:flex;gap:18px;flex-wrap:wrap;}
.family-bar nav a{opacity:.78;transition:opacity .2s;}
.family-bar nav a:hover{opacity:1;}
.family-bar nav a.active{opacity:1;font-weight:600;border-bottom:2px solid var(--htt-blue);padding-bottom:2px;}

/* ---------- Hauptmenü ---------- */
header.site{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--eggshell);box-shadow:0 1px 12px rgba(16,46,64,.05);}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px;}
.logo{font-weight:700;font-size:1.18rem;color:var(--htt-blue);letter-spacing:-.01em;display:flex;align-items:center;}
.logo span{color:var(--ink);font-weight:400;}
.logo img{height:44px;width:auto;display:block;}
.menu{display:flex;align-items:center;gap:6px;list-style:none;}
.menu>li{position:relative;}
.menu>li>a{display:block;padding:10px 14px;font-size:.96rem;font-weight:600;border-radius:8px;transition:background .2s,color .2s;}
.menu>li>a:hover,.menu>li>a.active{background:var(--smoke);color:var(--htt-blue);}
.menu>li.has-drop>a::after{content:"▾";font-size:.7rem;margin-left:6px;color:var(--light-blue);}
.dropdown{position:absolute;top:calc(100% + 6px);left:0;min-width:248px;background:#fff;border:1px solid var(--eggshell);border-radius:12px;box-shadow:0 16px 40px rgba(16,46,64,.14);padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;}
.menu>li.has-drop:hover .dropdown,.menu>li.has-drop:focus-within .dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.dropdown a{display:block;padding:9px 12px;border-radius:8px;font-size:.92rem;color:var(--gray);}
.dropdown a:hover{background:var(--smoke);color:var(--htt-blue);}
.nav-cta{display:flex;align-items:center;gap:16px;}
.link-sister{font-size:.86rem;color:var(--lapis);font-weight:600;white-space:nowrap;}
.link-sister:hover{color:var(--htt-blue);}

/* ---------- Buttons ---------- */
.btn{display:inline-block;background:var(--htt-blue);color:#fff;font-weight:600;padding:12px 22px;border-radius:10px;font-size:.95rem;transition:background .2s,transform .15s;border:none;cursor:pointer;line-height:1.2;}
.btn:hover{background:var(--dark-blue);transform:translateY(-1px);}
.btn-orange{background:var(--orange);}
.btn-orange:hover{background:#9a250a;}
.btn-ghost{background:transparent;color:var(--htt-blue);border:1.5px solid var(--htt-blue);padding:11px 20px;}
.btn-ghost:hover{background:var(--smoke);}
.btn-lg{padding:15px 30px;font-size:1.05rem;}
.menu-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--htt-blue);cursor:pointer;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(150deg,var(--smoke) 0%,#fff 55%,#fff 100%);padding:84px 0 72px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;top:-120px;right:-120px;width:460px;height:460px;background:radial-gradient(circle,rgba(95,141,211,.20),transparent 70%);border-radius:50%;}
.hero .container{position:relative;max-width:880px;}
.eyebrow{display:inline-block;background:#fff;border:1px solid var(--light-blue);color:var(--lapis);font-weight:600;font-size:.82rem;padding:6px 14px;border-radius:999px;margin-bottom:22px;}
.hero h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:700;line-height:1.1;color:var(--medium);max-width:20ch;}
.hero .subline{font-size:clamp(1.05rem,1.8vw,1.28rem);color:var(--gray);margin-top:24px;max-width:62ch;}
.hero-actions{margin-top:34px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.claim{margin-top:30px;font-weight:700;color:var(--htt-blue);font-size:1.12rem;}
.claim span{color:var(--saffron);}

/* ---------- Page-Hero (Unterseiten) ---------- */
.page-hero{background:linear-gradient(150deg,var(--smoke) 0%,#fff 60%,#fff 100%);padding:80px 0 60px;border-bottom:1px solid var(--eggshell);position:relative;overflow:hidden;}
.page-hero::before{content:"";position:absolute;top:-120px;right:-120px;width:440px;height:440px;background:radial-gradient(circle,rgba(95,141,211,.18),transparent 70%);border-radius:50%;}
.page-hero .container{max-width:880px;position:relative;}
.page-hero .eyebrow{margin-bottom:20px;}
.page-hero .kicker{margin-bottom:10px;}
.page-hero h1{font-size:clamp(1.9rem,4vw,2.9rem);color:var(--medium);font-weight:700;line-height:1.12;}
.page-hero p{color:var(--gray);font-size:1.12rem;margin-top:18px;max-width:62ch;}
.page-hero .claim{margin-top:26px;font-weight:700;color:var(--htt-blue);font-size:1.08rem;}
.page-hero .claim span{color:var(--saffron);}
.page-hero .hero-actions{margin-top:30px;}
/* Resource-Listen (Schatzkiste-Detail) */
.topic h3 .ic{margin-right:8px;}
.topic ul li a{transition:color .15s;}
.topic ul li:hover{background:var(--smoke);border-radius:6px;}

/* ---------- Section-Heads ---------- */
.head{text-align:center;max-width:64ch;margin:0 auto 46px;}
.head.left{text-align:left;margin-left:0;}
.head h2{font-size:clamp(1.5rem,2.6vw,2.05rem);color:var(--medium);font-weight:700;}
.head p{color:var(--gray);margin-top:12px;}
.kicker{display:inline-block;color:var(--htt-blue);font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;}

/* ---------- Kacheln / Cards ---------- */
.tiles{display:grid;gap:22px;}
.tiles.cols-4{grid-template-columns:repeat(4,1fr);}
.tiles.cols-3{grid-template-columns:repeat(3,1fr);}
.tiles.cols-2{grid-template-columns:repeat(2,1fr);}
.tile{background:#fff;border:1px solid var(--eggshell);border-radius:16px;padding:28px 24px;transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column;}
.tile:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(16,46,64,.10);border-color:var(--light-blue);}
.tile .ic{width:48px;height:48px;border-radius:12px;background:var(--smoke);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px;}
.tile h3{font-size:1.12rem;color:var(--htt-blue);font-weight:700;margin-bottom:10px;}
.tile p{font-size:.95rem;color:var(--gray);flex:1;}
.tile ul{margin:10px 0 0 18px;color:var(--gray);font-size:.92rem;}
.tile ul li{margin-bottom:4px;}
.tile .more{margin-top:16px;color:var(--htt-blue);font-weight:600;font-size:.9rem;align-self:flex-start;}
.tile.featured{border:2px solid var(--htt-blue);background:linear-gradient(160deg,#fff,var(--smoke));position:relative;}
.tile.featured .ic{background:var(--htt-blue);color:#fff;}
.badge{position:absolute;top:16px;right:16px;background:var(--orange);color:#fff;font-size:.68rem;font-weight:700;padding:4px 10px;border-radius:999px;letter-spacing:.04em;text-transform:uppercase;}

/* ---------- Buch-Karten ---------- */
.book{background:#fff;border:1px solid var(--eggshell);border-radius:16px;padding:24px;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s;}
.book:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(16,46,64,.10);border-color:var(--light-blue);}
.book .cover{height:200px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
.book .cover img{max-height:200px;width:auto;border-radius:6px;box-shadow:0 8px 20px rgba(16,46,64,.15);}
.book h3{color:var(--medium);font-size:1.05rem;margin-bottom:8px;}
.book p{color:var(--gray);font-size:.9rem;flex:1;}
.book .more{margin-top:14px;color:var(--htt-blue);font-weight:600;font-size:.9rem;}

/* ---------- Blog ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post{background:#fff;border:1px solid var(--eggshell);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s;}
.post:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(16,46,64,.10);border-color:var(--light-blue);}
.post .thumb{height:170px;background:linear-gradient(135deg,var(--htt-blue),var(--medium));overflow:hidden;}
.post .thumb img{width:100%;height:100%;object-fit:cover;}
.post .body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post .date{color:var(--lapis);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px;}
.post h3{color:var(--medium);font-size:1.05rem;font-weight:700;line-height:1.3;margin-bottom:10px;}
.post p{color:var(--gray);font-size:.92rem;flex:1;}
.post .more{margin-top:14px;color:var(--htt-blue);font-weight:600;font-size:.9rem;}

/* ---------- Newsletter / Lead-Magnet ---------- */
.lead{background:linear-gradient(150deg,var(--htt-blue),var(--medium));color:#fff;border-radius:22px;padding:48px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;overflow:hidden;position:relative;}
.lead::before{content:"";position:absolute;bottom:-140px;left:-100px;width:380px;height:380px;background:radial-gradient(circle,rgba(243,146,55,.28),transparent 70%);border-radius:50%;}
.lead .text{position:relative;}
.lead .kicker{color:var(--saffron);}
.lead h2{font-size:clamp(1.5rem,2.6vw,2.05rem);margin-bottom:14px;line-height:1.2;}
.lead p{color:#dce9f5;margin-bottom:24px;max-width:50ch;}
.lead-actions{display:flex;gap:16px;flex-wrap:wrap;}
.lead .gift{position:relative;text-align:center;}
.lead .gift img{margin:0 auto;border-radius:12px;box-shadow:0 16px 40px rgba(0,0,0,.3);max-height:280px;width:auto;}
.lead .gift .cap{display:block;margin-top:14px;font-size:.85rem;color:#dce9f5;font-weight:600;}

/* ---------- Werte / USP ---------- */
.values{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.value{text-align:center;padding:26px 18px;background:#fff;border:1px solid var(--eggshell);border-radius:16px;}
.value .ic{font-size:1.8rem;margin-bottom:12px;}
.value h3{color:var(--htt-blue);font-size:1.05rem;margin-bottom:8px;}
.value p{color:var(--gray);font-size:.9rem;}

/* ---------- Split (Bild/Text) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;}
.split .text h2{color:var(--medium);font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:16px;}
.split .text p{color:var(--gray);margin-bottom:14px;}
.split .visual{background:linear-gradient(135deg,var(--htt-blue),var(--medium));border-radius:20px;min-height:300px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;text-align:center;padding:30px;overflow:hidden;}
.split .visual img{width:100%;height:100%;object-fit:cover;border-radius:20px;}

/* ---------- Stimmen / Testimonials ---------- */
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.quote{background:#fff;border:1px solid var(--eggshell);border-radius:16px;padding:28px;position:relative;}
.quote::before{content:"\201C";position:absolute;top:6px;left:18px;font-size:3.4rem;color:var(--light-blue);opacity:.35;font-family:Georgia,serif;}
.quote p{color:var(--ink);font-size:.96rem;position:relative;}
.quote .who{margin-top:16px;font-weight:700;color:var(--htt-blue);font-size:.92rem;}
.quote .where{color:var(--gray);font-size:.85rem;}

/* ---------- Kontakt ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.contact-card{background:#fff;border:1px solid var(--eggshell);border-radius:16px;padding:26px;}
.contact-card h3{color:var(--medium);margin-bottom:6px;}
.contact-card .role{color:var(--htt-blue);font-weight:600;font-size:.9rem;margin-bottom:12px;}
.contact-card a{color:var(--htt-blue);font-weight:600;font-size:.92rem;}
.contact-info{font-size:1.05rem;}
.contact-info p{margin-bottom:10px;}
.contact-info strong{color:var(--medium);}

/* ---------- CTA-Band ---------- */
.cta-band{background:var(--medium);color:#fff;text-align:center;padding:60px 0;}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:14px;}
.cta-band p{color:#cfe0ea;margin-bottom:26px;max-width:60ch;margin-left:auto;margin-right:auto;}

/* ---------- Footer ---------- */
footer.site{background:var(--medium);color:#cfe0ea;padding:48px 0 32px;font-size:.9rem;margin-top:0;}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px;margin-bottom:30px;}
footer.site h4{color:#fff;font-size:.95rem;margin-bottom:14px;}
footer.site a{color:#cfe0ea;opacity:.82;display:block;padding:3px 0;}
footer.site a:hover{opacity:1;color:#fff;}
footer.site .brand{font-weight:700;color:#fff;font-size:1.1rem;margin-bottom:14px;}
footer.site .brand span{font-weight:400;color:var(--light-blue);}
footer.site .footer-logo{height:46px;width:auto;display:block;background:#fff;padding:8px 10px;border-radius:8px;}
footer.site .legal{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;align-items:center;}
footer.site .legal .links{display:flex;gap:18px;flex-wrap:wrap;}
footer.site .legal .links a{display:inline;padding:0;}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .tiles.cols-4{grid-template-columns:repeat(2,1fr);}
  .tiles.cols-3{grid-template-columns:repeat(2,1fr);}
  .blog-grid{grid-template-columns:1fr;}
  .values{grid-template-columns:repeat(2,1fr);}
  .lead{grid-template-columns:1fr;}
  footer.site .cols{grid-template-columns:1fr 1fr;}
}
@media(max-width:820px){
  .menu,.link-sister{display:none;}
  .menu-toggle{display:block;}
  header.site .menu.open{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--eggshell);padding:12px;gap:2px;z-index:60;}
  header.site .menu.open .dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding-left:14px;}
  .split,.contact-grid,.quotes{grid-template-columns:1fr;}
  .split .visual{min-height:200px;}
  .lead{padding:36px 28px;}
}
@media(max-width:560px){
  .tiles.cols-4,.tiles.cols-3,.tiles.cols-2,.values{grid-template-columns:1fr;}
  footer.site .cols{grid-template-columns:1fr;}
}