/* debes.de — rebuilt static site */
:root {
  --navy: #243b62;
  --navy-deep: #2b3d63;
  --blue: #29a8e0;
  --btn: #2c4470;
  --bg: #ffffff;
  --bg-header: #edf3fb;
  --text-soft: #3d5171;
  --line: #d9e2ee;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--navy);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
}
img { max-width: 100%; display: block; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { color: var(--blue); }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

/* Header */
header.site {
  background: var(--bg-header);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 8px rgba(36,59,98,.08);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; padding-top: 14px; padding-bottom: 14px;
}
.brand img { height: 52px; width: auto; }
.brand { display: inline-block; }
nav.main { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }
nav.main a {
  color: var(--navy); text-decoration: none; font-size: 1rem;
}
nav.main a:hover, nav.main a.active { text-decoration: underline; text-underline-offset: 5px; }
.lang { color: var(--navy); text-decoration: none; font-size: .95rem; white-space: nowrap; }
.lang:hover { text-decoration: underline; }
.btn {
  display: inline-block; background: var(--btn); color: #fff;
  text-decoration: none; padding: 12px 28px; border-radius: 3px;
  font-weight: 600; font-size: .98rem; border: 2px solid var(--btn);
  cursor: pointer;
}
.btn:hover { background: #1f3357; border-color: #1f3357; }
.btn.outline { background: transparent; color: var(--navy); }
.btn.outline:hover { background: var(--navy); color: #fff; }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: 0; font-size: 1.8rem; color: var(--navy); cursor: pointer; }
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  nav.main {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-header); flex-direction: column; align-items: flex-start;
    padding: 18px 24px; gap: 16px; box-shadow: 0 8px 16px rgba(36,59,98,.12);
  }
  nav.main.open { display: flex; }
  header.site .btn { display: none; }
}

/* Hero */
.hero { padding: 70px 0 60px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); line-height: 1.12; font-weight: 700; }
.hero h1 .alt { color: var(--blue); display: block; }
.hero p { margin-top: 30px; color: var(--text-soft); max-width: 56ch; }
.hero .actions { margin-top: 34px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero .photo img, .about .photo img { border-radius: 8px; }
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero .photo { order: -1; max-width: 380px; }
}

/* Sections */
section { padding: 64px 0; }
section h2.title { font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 700; margin-bottom: 30px; }

/* About */
.about { background: var(--bg-header); }
.about .wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.about p { color: var(--text-soft); }
.about .btn { margin-top: 28px; }
@media (max-width: 900px) { .about .wrap { grid-template-columns: 1fr; } }

/* Services */
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 12px;
}
.service {
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  overflow: hidden; display: flex; flex-direction: column;
  box-shadow: 0 2px 10px rgba(36,59,98,.06);
}
.service img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.service .body { padding: 24px 24px 28px; text-align: left; }
.service h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
.service p { color: var(--text-soft); font-size: .96rem; }
.service p + p { margin-top: 10px; }
@media (max-width: 1000px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .services-grid { grid-template-columns: 1fr; } }

/* References */
.references { background: var(--navy-deep); color: #fff; }
.references h2.title { color: #fff; }
.ref-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.ref-card {
  background: #fff; color: var(--navy); border-radius: 4px;
  padding: 28px 26px; display: flex; flex-direction: column;
}
.ref-card .logo { height: 70px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.ref-card .logo img { max-height: 64px; width: auto; }
.ref-card p { font-size: .95rem; flex: 1; }
.ref-card .role { margin-top: 16px; font-size: .85rem; color: var(--text-soft); }
@media (max-width: 1000px) { .ref-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .ref-grid { grid-template-columns: 1fr; } }

/* Publications teaser */
.pub-teaser .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.pub-teaser h2 { font-size: clamp(2rem, 4.5vw, 3.2rem); line-height: 1.15; font-weight: 700; }
.pub-teaser h2 .alt { color: var(--blue); }
.pub-teaser p { margin-top: 26px; color: var(--text-soft); max-width: 48ch; }
.pub-teaser .btn { margin-top: 30px; }
@media (max-width: 900px) { .pub-teaser .wrap { grid-template-columns: 1fr; } }

/* Publications page */
.pub-page h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 40px; }
.pub-featured { border-left: 4px solid var(--blue); padding: 4px 0 4px 22px; margin-bottom: 34px; }
.pub-featured p { color: var(--text-soft); }
.pub-featured a { font-weight: 600; }
.pub-page h2 { font-size: 1.6rem; margin: 52px 0 20px; }
.pub-list { list-style: none; }
.pub-list li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--text-soft); font-size: .97rem; }
.pub-list a { color: var(--navy); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.pub-list a:hover { color: var(--blue); }

/* Contact */
.contact-page h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 16px; }
.contact-page .lead { color: var(--text-soft); max-width: 60ch; margin-bottom: 40px; }
form.contact { max-width: 640px; }
form.contact .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
form.contact label { display: block; font-weight: 600; font-size: .92rem; margin: 18px 0 6px; }
form.contact input, form.contact textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 3px;
  font: inherit; color: var(--navy); background: #fff;
}
form.contact input:focus, form.contact textarea:focus { outline: 2px solid var(--blue); border-color: var(--blue); }
form.contact textarea { min-height: 160px; resize: vertical; }
form.contact .btn { margin-top: 26px; }
@media (max-width: 640px) { form.contact .row { grid-template-columns: 1fr; } }

/* Legal pages */
.legal h1 { font-size: 2rem; margin-bottom: 28px; }
.legal h2 { font-size: 1.25rem; margin: 30px 0 10px; }
.legal p, .legal li { color: var(--text-soft); max-width: 75ch; }
.legal ul { padding-left: 22px; }

/* Footer */
footer.site { background: var(--bg-header); padding: 56px 0 32px; margin-top: 40px; }
footer.site .cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
footer.site h3 { font-size: 1.05rem; margin-bottom: 14px; }
footer.site p, footer.site a { color: var(--text-soft); font-size: .95rem; text-decoration: none; }
footer.site nav a { display: block; padding: 3px 0; }
footer.site a:hover { color: var(--navy); text-decoration: underline; }
footer.site .legal-line {
  border-top: 1px solid var(--line); margin-top: 40px; padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: .85rem; color: var(--text-soft);
}
@media (max-width: 800px) { footer.site .cols { grid-template-columns: 1fr; } }

/* References carousel */
.ref-carousel-wrap { position: relative; }
.ref-carousel {
  display: flex; gap: 28px; overflow-x: auto;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
  padding: 4px 4px 16px; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.4) transparent;
}
.ref-carousel .ref-card { flex: 0 0 min(400px, 82vw); scroll-snap-align: start; }
.ref-nav {
  display: flex; gap: 12px; justify-content: flex-end; margin-top: 18px;
}
.ref-nav button {
  background: #fff; color: var(--navy); border: 0; border-radius: 50%;
  width: 44px; height: 44px; font-size: 1.3rem; cursor: pointer; line-height: 1;
}
.ref-nav button:hover { background: var(--blue); color: #fff; }
.ref-nav button:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }


/* Publications page hero + featured grid */
.pub-hero { background: var(--navy-deep); color: #fff; padding: 56px 0; }
.pub-hero h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin: 0; }
.pub-featured-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; margin-bottom: 24px; }
.pub-featured-grid .pub-featured { border-left: 0; padding: 0; margin: 0; display: flex; flex-direction: column; }
.pub-featured img {
  width: 100%; border: 1px solid var(--line); border-radius: 6px;
  margin-bottom: 18px; background: #fff;
}
.pub-featured p { flex: 1; }
.pub-featured .dl { margin-top: 14px; }
@media (max-width: 900px) { .pub-featured-grid { grid-template-columns: 1fr; } }