:root{
  --ink:#152a34; --ink-soft:#48606b; --line:#e3ebef;
  --bg:#ffffff; --bg-alt:#f4f8fa;
  --teal:#0d7a8c; --teal-dark:#0a5f6e; --teal-tint:#e6f2f4;
  --gold:#c8933a; --shadow:0 6px 24px rgba(15,42,52,.08);
  --radius:14px; --maxw:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; color:var(--ink); background:var(--bg);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  line-height:1.6; -webkit-font-smoothing:antialiased;
}
h1,h2,h3{line-height:1.2; color:var(--ink); font-weight:700}
h1{font-size:clamp(2rem,5vw,3.1rem); letter-spacing:-.02em; margin:.2em 0}
h2{font-size:clamp(1.5rem,3vw,2rem); margin:0 0 .8em}
a{color:var(--teal-dark)}
img{max-width:100%; height:auto; display:block}

.container{max-width:var(--maxw); margin:0 auto; padding:0 22px}
.narrow{max-width:720px}
.center{text-align:center}
.section{padding:72px 0}
.section.alt{background:var(--bg-alt)}

/* Header */
.site-header{
  position:sticky; top:0; z-index:20; display:flex; align-items:center;
  justify-content:space-between; padding:14px 22px; background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px); border-bottom:1px solid var(--line);
}
.brand{display:flex; align-items:center; gap:9px; text-decoration:none; color:var(--ink); font-weight:700}
.brand-mark{color:var(--teal); font-size:1.35rem}
.brand-text em{font-style:italic; color:var(--teal); font-weight:600}
.header-cta{
  text-decoration:none; font-weight:600; font-size:.92rem; color:#fff;
  background:var(--teal); padding:8px 16px; border-radius:999px;
}
.header-cta:hover{background:var(--teal-dark)}

/* Hero */
.hero{
  background:linear-gradient(160deg,#0d7a8c 0%,#0a5f6e 55%,#083f4a 100%);
  color:#fff; padding:88px 22px 96px; text-align:center;
}
.hero-inner{max-width:820px; margin:0 auto}
.hero h1{color:#fff}
.eyebrow{text-transform:uppercase; letter-spacing:.14em; font-size:.78rem;
  font-weight:600; opacity:.85; margin:0}
.lead{font-size:1.22rem; color:var(--ink-soft)}
.hero .lead{color:rgba(255,255,255,.9)}
.hero-meta{display:flex; flex-wrap:wrap; gap:10px 26px; justify-content:center;
  margin:26px 0 30px; font-size:1.02rem; opacity:.95}
.hero-meta em{font-style:normal; opacity:.7; margin:0 2px}
.hero-hint{font-size:.9rem; opacity:.8; margin-top:14px}

/* Buttons */
.btn{display:inline-block; text-decoration:none; font-weight:600; cursor:pointer;
  border:1px solid var(--line); background:#fff; color:var(--ink);
  padding:13px 26px; border-radius:999px; font-size:1rem; transition:.15s}
.btn:hover{border-color:var(--teal); color:var(--teal-dark)}
.btn-primary{background:#fff; color:var(--teal-dark); border:none}
.hero .btn-primary{box-shadow:var(--shadow)}
.section .btn-primary{background:var(--teal); color:#fff}
.section .btn-primary:hover{background:var(--teal-dark); color:#fff}
.btn-block{width:100%; padding:16px; font-size:1.05rem; margin-top:10px}

/* Video */
.video-frame{
  position:relative; aspect-ratio:9/16; max-width:340px; margin:6px auto 22px;
  border-radius:var(--radius); overflow:hidden;
  background:var(--teal-tint); box-shadow:var(--shadow);
}
.video-frame iframe,.video-frame video{position:absolute; inset:0; width:100%; height:100%; border:0}
.video-placeholder{position:absolute; inset:0; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:12px; color:var(--teal-dark); text-align:center}
.vp-icon{width:66px; height:66px; border-radius:50%; background:#fff; color:var(--teal);
  display:grid; place-items:center; font-size:1.6rem; box-shadow:var(--shadow); padding-left:5px}
.video-caption{color:var(--ink-soft); font-size:1.06rem}

/* Cards */
.cards{display:grid; grid-template-columns:repeat(3,1fr); gap:20px}
.card{background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:26px 24px; box-shadow:var(--shadow)}
.card h3{color:var(--teal-dark); font-size:1.12rem; margin:0 0 .5em}
.card p{margin:0; color:var(--ink-soft)}

/* Speakers */
.speakers{display:grid; grid-template-columns:1fr 1fr; gap:26px}
.speaker{display:flex; gap:18px; background:#fff; border:1px solid var(--line);
  border-radius:var(--radius); padding:22px; box-shadow:var(--shadow)}
.speaker-photo{flex:0 0 86px}
.speaker-photo img,.photo-ph{width:86px; height:86px; border-radius:50%; object-fit:cover}
.photo-ph{display:grid; place-items:center; background:var(--teal-tint);
  color:var(--teal); font-size:2rem}
.speaker-body h3{margin:0}
.speaker-role{color:var(--teal-dark); font-weight:600; margin:.1em 0 .05em; font-size:.95rem}
.speaker-funktion{color:var(--ink-soft); font-weight:600; margin:0 0 .6em; font-size:.88rem}
.speaker-body p{color:var(--ink-soft); font-size:.96rem; margin:0 0 .7em}
.link-cv{font-weight:600; text-decoration:none; font-size:.92rem}
.link-cv:hover{text-decoration:underline}

.place{font-size:1.1rem; color:var(--ink-soft)}

/* Form */
.form-intro{color:var(--ink-soft); margin-bottom:26px}
.form .row{margin-bottom:16px}
.form .two{display:grid; grid-template-columns:1fr 1fr; gap:16px}
.form label{display:block; font-weight:600; font-size:.92rem; color:var(--ink)}
.form input,.form textarea{
  width:100%; margin-top:6px; padding:12px 13px; font-size:1rem; font-family:inherit;
  border:1px solid var(--line); border-radius:10px; background:#fff; color:var(--ink);
}
.form input:focus,.form textarea:focus{outline:none; border-color:var(--teal);
  box-shadow:0 0 0 3px var(--teal-tint)}
.opt,.req{font-weight:400; color:var(--ink-soft); font-size:.85rem}
.dates{border:1px solid var(--line); border-radius:12px; padding:18px 20px; margin:6px 0 18px}
.dates legend{font-weight:700; padding:0 8px; font-size:.95rem}
.check{display:flex; align-items:flex-start; gap:11px; font-weight:500; margin:10px 0; cursor:pointer}
.check input{width:20px; height:20px; margin-top:2px; accent-color:var(--teal); flex:0 0 auto}
.dates .hint{color:var(--ink-soft); font-size:.86rem; margin:.4em 0 0}
.consent{font-size:.92rem; color:var(--ink-soft); margin:8px 0 4px}
.form-note{background:var(--teal-tint); border-radius:12px; padding:16px 20px; margin:0 0 24px}
.form-note p{margin:.4em 0; color:var(--ink); font-size:.94rem}
.form-note p:first-child{margin-top:0} .form-note p:last-child{margin-bottom:0}
.errors{background:#fdeceb; border:1px solid #f3b7b2; color:#9a2b22;
  border-radius:12px; padding:14px 18px; margin-bottom:20px}
.errors ul{margin:.4em 0 0; padding-left:1.2em}

/* Sponsors */
.sponsors h2{margin-top:14px}
.sponsors h2:first-child{margin-top:0}
.logo-row{display:flex; flex-wrap:wrap; gap:18px; justify-content:center; margin:0 0 30px}
.logo-box{flex:0 0 auto; min-width:180px; height:96px; display:grid; place-items:center;
  background:#fff; border:1px solid var(--line); border-radius:12px; padding:16px 26px}
.logo-box img{max-height:60px; width:auto}
.logo-name{font-weight:700; color:var(--ink); letter-spacing:.01em}
.logo-box.reserved{border-style:dashed; background:var(--bg-alt)}
.logo-ph{color:var(--ink-soft); font-size:.86rem; font-style:italic}

/* Thanks */
.thanks{padding:96px 0}
.check-badge{width:76px; height:76px; border-radius:50%; margin:0 auto 18px;
  background:var(--teal); color:#fff; display:grid; place-items:center;
  font-size:2.2rem; box-shadow:var(--shadow)}

/* Admin */
.stats{display:flex; flex-wrap:wrap; gap:16px; margin:0 0 20px}
.stat{background:#fff; border:1px solid var(--line); border-radius:12px;
  padding:14px 20px; box-shadow:var(--shadow)}
.stat .num{font-size:1.7rem; font-weight:700; color:var(--teal-dark); margin-right:6px}
.table-wrap{overflow-x:auto; border:1px solid var(--line); border-radius:12px}
table{border-collapse:collapse; width:100%; min-width:760px; background:#fff}
th,td{padding:11px 13px; text-align:left; border-bottom:1px solid var(--line); font-size:.92rem}
th{background:var(--bg-alt); font-size:.8rem; text-transform:uppercase; letter-spacing:.04em}
td.c{text-align:center; color:var(--teal-dark); font-weight:700}
.empty{text-align:center; color:var(--ink-soft); padding:30px}

/* Footer */
.site-footer{background:#0f2a34; color:#cddbe0; padding:44px 22px 26px}
.foot-grid{max-width:var(--maxw); margin:0 auto; display:grid;
  grid-template-columns:1fr 1fr 1.4fr; gap:24px}
.site-footer a{color:#8fd0da}
.foot-note{font-size:.86rem; color:#93aab2}
.foot-org{max-width:var(--maxw); margin:22px auto 0; padding-top:16px;
  border-top:1px solid rgba(255,255,255,.12); font-size:.85rem; color:#a9bcc3}
.foot-copy{max-width:var(--maxw); margin:12px auto 0; font-size:.84rem; color:#7e979f}

/* Responsive */
@media(max-width:820px){
  .cards{grid-template-columns:1fr}
  .speakers{grid-template-columns:1fr}
  .form .two{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}

/* CV- und Textseiten */
.cv-back{display:inline-block; margin-bottom:22px; color:var(--teal-dark);
  text-decoration:none; font-weight:600}
.cv-back:hover{text-decoration:underline}
.cv-head{display:flex; gap:20px; align-items:center; margin-bottom:8px}
.cv-head img{width:104px; height:104px; border-radius:50%; object-fit:cover; flex:0 0 auto}
.cv-head h1{font-size:clamp(1.5rem,4vw,2.1rem); margin:0}
.cv h2{margin:30px 0 6px; font-size:1.15rem; color:var(--teal-dark)}
.cv-row{display:grid; grid-template-columns:135px 1fr; gap:12px; padding:9px 0;
  border-bottom:1px solid var(--line)}
.cv-row .yr{font-weight:700; color:var(--ink-soft)}
.textpage p{color:var(--ink-soft); margin:.7em 0}
.textpage h2{margin:26px 0 8px; font-size:1.15rem; color:var(--teal-dark)}
@media(max-width:560px){
  .cv-row{grid-template-columns:92px 1fr; gap:10px}
  .cv-head{flex-direction:column; text-align:center}
}