/* Armbruster Biotechnology — clean scientific style, brand colors from logo */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6f3;
  --color-bg-section: #eef0ea;
  --color-text: #2b2d2f;
  --color-text-muted: #5a5d61;
  --color-border: #dfe1dc;
  --color-primary: #8bc53f;        /* logo green */
  --color-primary-dark: #6ea130;
  --color-primary-light: #eef7e0;
  --color-secondary: #7d7e80;      /* logo grey (the "b") */
  --color-secondary-dark: #4f5052;
  --color-accent: #6ea130;
  --max-width: 1100px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(40, 50, 35, 0.06);
  --shadow-md: 0 6px 18px rgba(40, 50, 35, 0.10);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-primary-dark);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }
h2 { font-size: 1.55rem; margin-top: 2.5rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.15rem; margin-top: 1.75rem; margin-bottom: 0.5rem; color: var(--color-secondary-dark); }
h4 { font-size: 1rem; margin-top: 1.25rem; margin-bottom: 0.4rem; }

p { margin: 0 0 1rem 0; }

ul { margin: 0 0 1rem 1.25rem; padding: 0; }
li { margin-bottom: 0.35rem; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Header / Navigation ---------- */

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  height: 56px;
  width: auto;
  display: block;
}

.brand:hover { text-decoration: none; }

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s, color 0.15s;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(180deg, var(--color-primary-light) 0%, #ffffff 100%);
  padding: 4rem 0 3rem 0;
  border-bottom: 1px solid var(--color-border);
}

.hero h1 {
  font-size: 2.6rem;
  max-width: 800px;
  margin-bottom: 1rem;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 720px;
  margin-bottom: 1.5rem;
}

.hero-cta {
  display: inline-block;
  margin-right: 0.75rem;
}

/* ---------- Page header (non-home pages) ---------- */

.page-header {
  background: var(--color-bg-alt);
  padding: 2.5rem 0 2rem 0;
  border-bottom: 1px solid var(--color-border);
}

.page-header .breadcrumbs {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.page-header h1 {
  margin-bottom: 0.4rem;
}

.page-header .lead {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 720px;
  margin: 0;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--color-primary);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary-dark);
}

.btn-secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* ---------- Sections ---------- */

main {
  padding: 2.5rem 0 3.5rem 0;
}

.section {
  margin-bottom: 2rem;
}

.section-alt {
  background: var(--color-bg-alt);
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* ---------- Project rows (home page) ---------- */

.project-rows {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.project-row {
  display: grid;
  grid-template-columns: 220px 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: background 0.15s;
}

.project-row:hover {
  background: var(--color-primary-light);
  text-decoration: none;
}

.project-row:first-child {
  border-top: 1px solid var(--color-border);
}

.project-row .row-tag {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.project-row .row-num {
  font-family: "SF Mono", "Menlo", Consolas, monospace;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.project-row .row-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.project-row .row-content h3 {
  margin: 0 0 0.4rem 0;
  font-size: 1.4rem;
  color: var(--color-text);
}

.project-row .row-content p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.55;
  max-width: 640px;
}

.project-row .row-arrow {
  font-size: 1.6rem;
  color: var(--color-primary);
  font-weight: 700;
  transition: transform 0.15s;
}

.project-row:hover .row-arrow {
  transform: translateX(4px);
  color: var(--color-primary-dark);
}

@media (max-width: 720px) {
  .project-row {
    grid-template-columns: 1fr auto;
    gap: 1rem;
  }
  .project-row .row-tag {
    grid-column: 1 / -1;
  }
  .project-row .row-content h3 {
    font-size: 1.2rem;
  }
}

/* ---------- Tile grid (still used on Projekte landing, Produkte, Implantat advantages) ---------- */

.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.tile {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
  display: flex;
  flex-direction: column;
}

.tile:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  text-decoration: none;
  transform: translateY(-2px);
}

.tile h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--color-secondary-dark);
}

.tile p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  flex-grow: 1;
}

.tile .tile-link {
  margin-top: auto;
  font-weight: 600;
  color: var(--color-primary-dark);
  font-size: 0.9rem;
}

.tile-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

/* ---------- TOC / In-page nav ---------- */

.toc {
  background: var(--color-primary-light);
  border-left: 3px solid var(--color-primary);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  margin: 1.5rem 0 2.5rem 0;
}

.toc h4 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary-dark);
}

.toc ul {
  margin: 0;
  padding-left: 1.1rem;
}

.toc li {
  margin-bottom: 0.25rem;
}

/* ---------- Callout box ---------- */

.callout {
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-primary);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.callout strong {
  color: var(--color-text);
}

/* ---------- Reference / publication list ---------- */

.references {
  list-style: none;
  margin: 1rem 0;
  padding: 0;
}

.references li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.93rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.references li:last-child { border-bottom: none; }

.references .ref-authors {
  color: var(--color-text);
  font-weight: 500;
}

/* ---------- Patent / IP block ---------- */

.patent {
  background: var(--color-bg-alt);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
}

.patent h4 {
  margin-top: 0;
  color: var(--color-secondary-dark);
}

.patent-numbers {
  font-family: "SF Mono", "Menlo", Consolas, monospace;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
}

/* ---------- Footer ---------- */

.site-footer {
  background: #2b2d2f;
  color: #c5c8c2;
  padding: 2.5rem 0 1.5rem 0;
  font-size: 0.9rem;
  margin-top: 3rem;
}

.site-footer a {
  color: #c5c8c2;
}

.site-footer a:hover { color: var(--color-primary); }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid h4 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.6rem;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid li {
  margin-bottom: 0.35rem;
}

.footer-bottom {
  border-top: 1px solid #45474a;
  padding-top: 1rem;
  font-size: 0.82rem;
  color: #8d9088;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- Tables ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-text);
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  h1 { font-size: 1.8rem; }
  .hero { padding: 2.5rem 0 2rem 0; }
  .hero h1 { font-size: 1.9rem; }
  .main-nav ul { gap: 1rem; }
  .main-nav a { font-size: 0.9rem; }
  .site-header .container { padding-top: 0.75rem; padding-bottom: 0.75rem; }
  .brand-logo { height: 44px; }
}

/* ---------- Section label (eyebrow) ---------- */

.section-label {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 700;
  margin-bottom: 1rem;
}

/* ---------- Featured article block ---------- */

.feature {
  display: grid;
  grid-template-columns: 1.5fr 0.85fr;
  gap: 2.25rem;
  align-items: stretch;
  margin-top: 1.25rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2.2rem;
  color: var(--color-text);
  text-decoration: none;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
}
a.feature:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  text-decoration: none;
}
.feature__kicker {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  font-weight: 700;
  margin-bottom: 0.8rem;
}
.feature__title { font-size: 1.8rem; margin: 0 0 0.8rem; color: var(--color-text); line-height: 1.2; }
.feature__excerpt { color: var(--color-text-muted); font-size: 1.05rem; line-height: 1.6; margin: 0 0 1.2rem; max-width: 52ch; }
.feature__cta { font-weight: 600; color: var(--color-primary-dark); }
.feature__media {
  background: var(--color-primary-light);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 1.8rem;
  min-height: 150px;
}
.feature__media-mono { font-size: 2.8rem; font-weight: 700; color: var(--color-primary-dark); line-height: 1; }
.feature__media-cap { margin-top: 0.6rem; font-size: 0.85rem; color: var(--color-primary-dark); }

/* ---------- Equal field cards (homepage Ausprägungen) ---------- */

.aus-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 2rem 0 0;
}
.aus-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.6rem 1.7rem 1.5rem;
  color: var(--color-text);
  text-decoration: none;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
}
a.aus-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  text-decoration: none;
}
.aus-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.9rem;
}
.aus-mono {
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.98rem;
}
.aus-num {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.aus-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}
.aus-title { font-size: 1.3rem; font-weight: 600; color: var(--color-text); margin: 0; line-height: 1.2; }
.aus-arrow {
  flex-shrink: 0;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  border: 1.5px solid var(--color-border);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
a.aus-card:hover .aus-arrow { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.aus-desc { color: var(--color-text-muted); font-size: 0.98rem; line-height: 1.55; margin: 0 0 1.3rem; }
.aus-foot { margin-top: auto; font-size: 0.9rem; font-weight: 600; color: var(--color-primary-dark); }

@media (max-width: 640px) {
  .aus-grid { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; }
  .feature__media { display: none; }
}