/* ============================================================
   ERPENBACH INSTITUTE – main.css  v3.0
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --ink: #1a1916; --ink-soft: #3d3b37; --ink-muted: #7a7770; --ink-faint: #b8b5af;
  --ground: #f5f3ee; --ground-warm: #ede9e1; --ground-card: #efecea; --line: #d8d4cc;
  --accent: #3d5a4a; --accent-light: #5c7a68; --accent-dim: #e8ede9;
  --sage: #7a9e8a; --sage-dim: #eaf1ec;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Instrument Sans', sans-serif;
  --mono: 'DM Mono', monospace;
}
html { scroll-behavior: smooth; }
body { font-family: var(--sans); background: var(--ground); color: var(--ink); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; display: flex; flex-direction: column; min-height: 100vh; }
main { flex: 1; animation: fadeIn 0.45s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--accent); }
.page-content { padding-top: 64px; }

/* NAV */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(245,243,238,0.97); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0 4rem; height: 64px; gap: 2rem; }
.site-logo { font-family: var(--serif); font-size: 1.05rem; font-weight: 400; letter-spacing: 0.04em; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.site-logo img { height: 30px; }
.main-nav { display: flex; gap: 2rem; list-style: none; align-items: center; }
.main-nav a { font-family: var(--mono); font-size: 0.65rem; font-weight: 300; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); text-decoration: none; white-space: nowrap; transition: color 0.2s; }
.main-nav a:hover, .main-nav a.active { color: var(--accent); }
.nav-contact { font-family: var(--mono); font-size: 0.65rem; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); text-decoration: none; border: 1px solid var(--accent); padding: 0.4rem 0.9rem; white-space: nowrap; transition: all 0.2s; flex-shrink: 0; }
.nav-contact:hover { background: var(--accent); color: white; }
.lang-switch { display: flex; align-items: center; flex-shrink: 0; }
.lang-switch button { background: none; border: 1px solid var(--line); padding: 3px 9px; font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer; color: var(--ink-muted); transition: all 0.2s; line-height: 1.5; }
.lang-switch button:first-child { border-radius: 2px 0 0 2px; }
.lang-switch button:last-child { border-radius: 0 2px 2px 0; border-left: none; }
.lang-switch button.active { background: var(--ink); border-color: var(--ink); color: var(--ground); }
.lang-switch button:hover:not(.active) { border-color: var(--ink-soft); color: var(--ink); }
.nav-toggle { display: none; flex-direction: column; justify-content: space-between; width: 22px; height: 14px; background: none; border: none; cursor: pointer; padding: 0; flex-shrink: 0; }
.nav-toggle span { display: block; height: 1px; background: var(--ink); transition: transform 0.3s, opacity 0.3s; transform-origin: center; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.mobile-nav-drawer { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--ground); border-bottom: 1px solid var(--line); padding: 1rem 2rem 1.5rem; z-index: 99; flex-direction: column; }
.mobile-nav-drawer.open { display: flex; }
.mobile-nav-drawer a { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); padding: 0.85rem 0; border-bottom: 1px solid var(--line); text-decoration: none; transition: color 0.2s; }
.mobile-nav-drawer a:last-child { border-bottom: none; }
.mobile-nav-drawer a:hover, .mobile-nav-drawer a.active { color: var(--accent); }
.mobile-nav-drawer .lang-switch { margin-top: 1.2rem; }

/* BUTTONS */
.btn-primary { font-family: var(--mono); font-size: 0.68rem; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; background: var(--ink); color: var(--ground); border: none; padding: 0.85rem 1.8rem; cursor: pointer; text-decoration: none; display: inline-block; transition: background 0.2s; }
.btn-primary:hover { background: var(--accent); color: white; }
.btn-secondary { font-family: var(--mono); font-size: 0.68rem; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; background: transparent; color: var(--ink-soft); border: 1px solid var(--line); padding: 0.85rem 1.8rem; cursor: pointer; text-decoration: none; display: inline-block; transition: all 0.2s; }
.btn-secondary:hover { border-color: var(--ink-soft); color: var(--ink); }
.btn-link { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); text-decoration: none; display: inline-flex; align-items: center; gap: 0.5rem; transition: gap 0.2s; }
.btn-link:hover { gap: 0.75rem; color: var(--accent); }
.btn-group { display: flex; gap: 1rem; flex-wrap: wrap; }

/* STRUCTURE */
.section { padding: 6rem 4rem; max-width: 1200px; margin: 0 auto; }
.section-header { display: flex; align-items: baseline; gap: 1.5rem; margin-bottom: 3.5rem; }
.section-num { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.15em; color: var(--ink-faint); }
.section-title { font-family: var(--serif); font-size: 1.9rem; font-weight: 300; color: var(--ink); letter-spacing: -0.01em; }
.page-hero { padding: 5rem 4rem 4rem; max-width: 1200px; margin: 0 auto; border-bottom: 1px solid var(--line); }
.page-hero-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 1.5rem; }
.page-hero h1 { font-family: var(--serif); font-size: 2.8rem; font-weight: 300; color: var(--ink); letter-spacing: -0.01em; max-width: 22ch; line-height: 1.2; }
.page-hero p { font-size: 0.95rem; color: var(--ink-soft); max-width: 64ch; margin-top: 1.5rem; font-weight: 300; line-height: 1.8; }
.content-section { padding: 4rem; max-width: 1200px; margin: 0 auto; }
.content-section + .content-section { padding-top: 0; }
.prose-block { max-width: 68ch; margin-bottom: 2.5rem; }
.prose-block h3 { font-family: var(--serif); font-size: 1.4rem; font-weight: 400; color: var(--ink); margin-bottom: 1rem; }
.prose-block p { font-size: 0.9rem; line-height: 1.85; color: var(--ink-soft); font-weight: 300; margin-bottom: 1rem; }
.prose-block p:last-child { margin-bottom: 0; }

/* HOME HERO */
.hero { padding-top: 64px; }
.hero-grid { padding: 9rem 4rem 7rem; max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 6rem; align-items: center; }
.hero-label { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 1.8rem; display: flex; align-items: center; gap: 0.75rem; }
.hero-label::before { content: ''; display: block; width: 24px; height: 1px; background: var(--ink-faint); }
.hero-title { font-family: var(--serif); font-size: 2.9rem; font-weight: 300; line-height: 1.18; letter-spacing: -0.01em; color: var(--ink); margin-bottom: 1.8rem; }
.hero-title em { font-style: italic; color: var(--accent); }
.hero-sub { font-size: 0.92rem; line-height: 1.85; color: var(--ink-soft); max-width: 48ch; margin-bottom: 2.8rem; font-weight: 300; }
.hero-right { display: flex; align-items: center; justify-content: center; }
.hero-diagram { width: 100%; max-width: 370px; }

/* STRIPS */
.differentiator { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 3rem 4rem; background: var(--ground-warm); }
.differentiator-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; align-items: center; }
.diff-label { font-family: var(--serif); font-size: 1.5rem; font-weight: 300; font-style: italic; color: var(--ink-muted); line-height: 1.3; }
.diff-text { font-size: 0.9rem; line-height: 1.85; color: var(--ink-soft); font-weight: 300; }

.era-strip { background: var(--accent-dim); border-top: 1px solid rgba(61,90,74,0.12); border-bottom: 1px solid rgba(61,90,74,0.12); padding: 3.5rem 4rem; }
.era-strip-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; align-items: center; }
.era-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.era-title { font-family: var(--serif); font-size: 1.5rem; font-weight: 300; color: var(--ink); margin-bottom: 1rem; line-height: 1.35; }
.era-text { font-size: 0.88rem; line-height: 1.8; color: var(--ink-soft); font-weight: 300; margin-bottom: 1.5rem; }

/* AXES GRID (home preview) */
.axes-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.axis-card { background: var(--ground); padding: 1.8rem 1.5rem; transition: background 0.2s; }
.axis-card:hover { background: var(--ground-card); }
.axis-num { font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.15em; color: var(--ink-faint); margin-bottom: 0.7rem; }
.axis-title { font-family: var(--serif); font-size: 1rem; font-weight: 400; color: var(--ink); line-height: 1.3; margin-bottom: 0.6rem; }
.axis-desc { font-size: 0.77rem; line-height: 1.65; color: var(--ink-muted); font-weight: 300; }

/* DARK BLOCK */
.matters-section { background: var(--ink); padding: 6rem 4rem; }
.matters-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 2fr; gap: 6rem; align-items: start; }
.matters-label { font-family: var(--serif); font-size: 1.6rem; font-weight: 300; font-style: italic; color: rgba(245,243,238,0.3); line-height: 1.3; position: sticky; top: 100px; }
.matters-text { font-size: 1.15rem; line-height: 1.9; color: rgba(245,243,238,0.82); font-family: var(--serif); font-weight: 300; }
.matters-text strong { color: rgba(245,243,238,0.95); font-weight: 400; }
.matters-text p { margin-bottom: 1.2rem; }
.matters-text p:last-child { margin-bottom: 0; }

/* PRINCIPLE */
.principle-section { background: var(--accent-dim); border-top: 1px solid rgba(61,90,74,0.15); border-bottom: 1px solid rgba(61,90,74,0.15); padding: 4rem; }
.principle-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 2fr; gap: 4rem; align-items: center; }
.principle-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); }
.principle-text { font-family: var(--serif); font-size: 1.25rem; font-weight: 300; line-height: 1.75; color: var(--ink); }

/* CTA */
.cta-section { padding: 6rem 4rem; text-align: center; max-width: 700px; margin: 0 auto; }
.cta-section h2 { font-family: var(--serif); font-size: 2rem; font-weight: 300; margin-bottom: 1.2rem; color: var(--ink); }
.cta-section p { font-size: 0.9rem; color: var(--ink-muted); margin-bottom: 2rem; font-weight: 300; line-height: 1.7; }

/* ATTR LIST */
.attr-list { display: flex; flex-direction: column; border: 1px solid var(--line); max-width: 580px; margin: 1.5rem 0 2.5rem; }
.attr-item { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.4rem; border-bottom: 1px solid var(--line); font-size: 0.85rem; color: var(--ink-soft); font-weight: 300; }
.attr-item:last-child { border-bottom: none; }
.attr-item::before { content: '-'; font-family: var(--mono); color: var(--accent); font-size: 0.75rem; }

/* INSTITUTE - FOUNDER */
.founder-section { display: grid; grid-template-columns: 300px 1fr; gap: 4rem; align-items: start; border: 1px solid var(--line); padding: 2.5rem; margin-bottom: 3rem; max-width: 900px; }
.founder-portrait { width: 100%; aspect-ratio: 3/4; object-fit: cover; object-position: center 10%; display: block; }
.founder-role { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 0.6rem; }
.founder-name { font-family: var(--serif); font-size: 1.8rem; font-weight: 400; color: var(--ink); margin-bottom: 1.4rem; }
.founder-bio { font-size: 0.88rem; line-height: 1.85; color: var(--ink-soft); font-weight: 300; }

/* MODES */
.modes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 3rem; }
.mode-card { background: var(--ground); padding: 2rem 1.8rem; }
.mode-tag { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.mode-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 400; margin-bottom: 0.7rem; color: var(--ink); }
.mode-text { font-size: 0.82rem; line-height: 1.7; color: var(--ink-muted); font-weight: 300; }

/* PROCESS */
.process-steps { display: flex; flex-direction: column; border: 1px solid var(--line); max-width: 680px; margin-bottom: 3rem; }
.process-step { display: grid; grid-template-columns: 48px 1fr; gap: 1.5rem; align-items: center; padding: 1.3rem 1.8rem; border-bottom: 1px solid var(--line); }
.process-step:last-child { border-bottom: none; }
.step-num { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.12em; color: var(--accent); }
.step-text { font-size: 0.87rem; color: var(--ink-soft); font-weight: 300; }

/* PARTNERSHIP */
.partnership-badge { display: inline-flex; align-items: center; gap: 1rem; padding: 1rem 1.4rem; border: 1px solid var(--line); background: var(--ground-card); margin-top: 1.5rem; }
.badge-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-muted); }
.badge-name { font-family: var(--serif); font-size: 1rem; color: var(--ink); }

/* RESEARCH - ACCORDION */
.project-filter { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2rem; }
.filter-btn { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; background: none; border: 1px solid var(--line); padding: 0.35rem 0.85rem; cursor: pointer; color: var(--ink-muted); transition: all 0.2s; }
.filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.filter-btn.active { background: var(--ink); border-color: var(--ink); color: var(--ground); }

.axis-accordion { border: 1px solid var(--line); }
.axis-accordion + .axis-accordion { border-top: none; }

.axis-header { display: grid; grid-template-columns: 52px 1fr auto 20px; align-items: center; gap: 1rem; padding: 1.4rem 2rem; cursor: pointer; background: var(--ground); transition: background 0.2s; border: none; width: 100%; text-align: left; }
.axis-header:hover { background: var(--ground-card); }
.axis-header.open { background: var(--ground-warm); }
.axis-header-num { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--accent); font-weight: 400; }
.axis-header-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 400; color: var(--ink); }
.axis-header-count { font-family: var(--mono); font-size: 0.58rem; color: var(--ink-faint); letter-spacing: 0.08em; white-space: nowrap; }
.axis-chevron { color: var(--ink-faint); font-size: 0.75rem; transition: transform 0.25s; }
.axis-header.open .axis-chevron { transform: rotate(180deg); }

.axis-body { display: none; border-top: 1px solid var(--line); }
.axis-body.open { display: block; }

.axis-body-desc { padding: 1.2rem 2rem 1.2rem 5.5rem; font-size: 0.85rem; color: var(--ink-muted); font-weight: 300; line-height: 1.7; border-bottom: 1px solid var(--line); }

.project-row { display: grid; grid-template-columns: 110px 1fr auto; align-items: start; gap: 1.5rem; padding: 1.2rem 2rem 1.2rem 5.5rem; border-bottom: 1px solid var(--line); transition: background 0.15s; }
.project-row:last-child { border-bottom: none; }
.project-row:hover { background: var(--ground-card); }

.pr-kuerzel { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.08em; color: var(--accent); font-weight: 400; padding-top: 0.1rem; }
.pr-title { font-family: var(--serif); font-size: 0.98rem; font-weight: 400; color: var(--ink); line-height: 1.35; margin-bottom: 0.25rem; }
.pr-meta { font-family: var(--mono); font-size: 0.57rem; letter-spacing: 0.07em; color: var(--ink-faint); text-transform: uppercase; }
.pr-link { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); text-decoration: none; white-space: nowrap; transition: color 0.2s; padding-top: 0.1rem; }
.pr-link:hover { color: var(--accent); }

/* REFERENCE PROJECTS */
.ref-projects { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.ref-card { background: var(--ground); padding: 1.8rem 1.6rem; transition: background 0.2s; }
.ref-card:hover { background: var(--ground-card); }
.ref-kuerzel { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 0.5rem; }
.ref-title { font-family: var(--serif); font-size: 0.98rem; font-weight: 400; color: var(--ink); line-height: 1.3; margin-bottom: 0.6rem; }
.ref-link { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.08em; color: var(--ink-faint); text-decoration: none; text-transform: uppercase; transition: color 0.2s; }
.ref-link:hover { color: var(--accent); }

/* PUBLICATIONS */
.pub-item { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; padding: 1.8rem 2rem; border: 1px solid var(--line); transition: background 0.2s; }
.pub-item + .pub-item { border-top: none; }
.pub-item:hover { background: var(--ground-card); }
.pub-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 400; color: var(--ink); margin-bottom: 0.4rem; }
.pub-meta { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.08em; color: var(--ink-faint); text-transform: uppercase; }
.pub-link { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); text-decoration: none; border: 1px solid var(--accent); padding: 0.4rem 0.9rem; white-space: nowrap; transition: all 0.2s; }
.pub-link:hover { background: var(--accent); color: white; }

/* CONTACT FORM */
.contact-form { max-width: 620px; display: flex; flex-direction: column; gap: 1.2rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted); }
.form-group input, .form-group select, .form-group textarea { background: white; border: 1px solid var(--line); padding: 0.75rem 1rem; font-family: var(--sans); font-size: 0.87rem; font-weight: 300; color: var(--ink); outline: none; transition: border-color 0.2s; resize: vertical; appearance: none; border-radius: 0; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--accent); }
.form-note { font-size: 0.78rem; color: var(--ink-faint); font-style: italic; margin-top: 0.75rem; font-family: var(--serif); line-height: 1.6; }
.contact-direct { display: flex; align-items: center; gap: 1.2rem; padding: 1.4rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 3rem; }
.contact-direct-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-muted); }
.contact-direct a { font-family: var(--serif); font-size: 1.1rem; color: var(--ink); transition: color 0.2s; }
.contact-direct a:hover { color: var(--accent); }

/* YOUNG RESEARCH */
.yr-hero-wrap { background: var(--sage-dim); }
.yr-page-label { color: var(--sage) !important; }
.yr-section { padding: 5rem 4rem; max-width: 1200px; margin: 0 auto; }
.yr-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--sage); margin-bottom: 1rem; }
.yr-title { font-family: var(--serif); font-size: 1.7rem; font-weight: 300; color: var(--ink); margin-bottom: 1.2rem; }
.yr-text { font-size: 0.9rem; line-height: 1.85; color: var(--ink-soft); font-weight: 300; max-width: 66ch; margin-bottom: 1rem; }
.yr-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin-top: 2rem; }
.yr-card { background: var(--ground-card); border: 1px solid rgba(122,158,138,0.2); padding: 2rem 1.8rem; }
.yr-card-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sage); margin-bottom: 0.8rem; }
.yr-card-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 400; color: var(--ink); margin-bottom: 0.7rem; }
.yr-card-text { font-size: 0.82rem; line-height: 1.7; color: var(--ink-muted); font-weight: 300; }
.yr-denkfragen { display: flex; flex-direction: column; border: 1px solid rgba(122,158,138,0.25); margin: 2rem 0; max-width: 640px; }
.yr-frage { padding: 1rem 1.5rem; border-bottom: 1px solid rgba(122,158,138,0.2); font-family: var(--serif); font-size: 1rem; font-weight: 300; color: var(--ink-soft); line-height: 1.5; }
.yr-frage:last-child { border-bottom: none; }
.yr-notice { background: var(--sage-dim); border: 1px solid rgba(122,158,138,0.25); padding: 1.5rem 2rem; max-width: 600px; margin-top: 2rem; font-size: 0.85rem; line-height: 1.7; color: var(--ink-soft); font-weight: 300; }

/* PARTNERS */
.coming-soon-wrap { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 45vh; text-align: center; padding: 6rem 4rem; }
.coming-soon-label { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: 1.5rem; }
.coming-soon-text { font-family: var(--serif); font-size: 1.4rem; font-weight: 300; color: var(--ink-muted); line-height: 1.5; max-width: 36ch; }

/* LEGAL */
.legal-container { max-width: 720px; }
.legal-container h2 { font-family: var(--serif); font-size: 1.3rem; font-weight: 400; color: var(--ink); margin: 2.5rem 0 0.6rem; }
.legal-container p, .legal-container address { font-size: 0.88rem; line-height: 1.85; color: var(--ink-soft); font-weight: 300; font-style: normal; margin-bottom: 0.4rem; }
.legal-container a { color: var(--accent); }
.placeholder-field { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint); border: 1px dashed var(--line); padding: 0.25rem 0.5rem; display: inline-block; }

/* FOOTER */
.site-footer { border-top: 1px solid var(--line); padding: 2.5rem 4rem; display: flex; align-items: flex-start; justify-content: space-between; background: var(--ground); gap: 2rem; }
.footer-brand { font-family: var(--serif); font-size: 0.9rem; color: var(--ink-muted); }
.footer-links { display: flex; gap: 2rem; list-style: none; flex-wrap: wrap; }
.footer-links a { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--ink-muted); }
.footer-legal { font-family: var(--mono); font-size: 0.57rem; letter-spacing: 0.06em; color: var(--ink-faint); text-align: right; line-height: 1.65; flex-shrink: 0; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .axes-grid { grid-template-columns: repeat(3, 1fr); }
  .modes-grid { grid-template-columns: repeat(2, 1fr); }
  .ref-projects { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .header-inner { padding: 0 1.5rem; }
  .main-nav, .nav-contact { display: none; }
  .nav-toggle { display: flex; }
  .lang-switch { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr; padding: 5rem 1.5rem 4rem; gap: 2.5rem; }
  .hero-title { font-size: 2.3rem; }
  .hero-right { display: none; }
  .differentiator { padding: 2.5rem 1.5rem; }
  .differentiator-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .era-strip { padding: 3rem 1.5rem; }
  .era-strip-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .section { padding: 4rem 1.5rem; }
  .axes-grid { grid-template-columns: repeat(2, 1fr); }
  .matters-section { padding: 4rem 1.5rem; }
  .matters-inner { grid-template-columns: 1fr; gap: 2rem; }
  .matters-label { position: static; }
  .matters-text { font-size: 1.05rem; }
  .principle-section { padding: 3rem 1.5rem; }
  .principle-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .page-hero { padding: 4rem 1.5rem 3rem; }
  .page-hero h1 { font-size: 2.2rem; max-width: none; }
  .content-section { padding: 3rem 1.5rem; }
  .founder-section { grid-template-columns: 1fr; }
  .founder-portrait { max-width: 280px; }
  .modes-grid { grid-template-columns: 1fr 1fr; }
  .ref-projects { grid-template-columns: 1fr 1fr; }
  .project-row { grid-template-columns: 80px 1fr; padding-left: 2rem; }
  .pr-link { display: none; }
  .yr-cards { grid-template-columns: 1fr; }
  .yr-section { padding: 3.5rem 1.5rem; }
  .site-footer { padding: 2rem 1.5rem; flex-direction: column; align-items: center; text-align: center; }
  .footer-links { justify-content: center; }
  .footer-legal { text-align: center; }
  .cta-section { padding: 4rem 1.5rem; }
}
@media (max-width: 600px) {
  .axes-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 1.9rem; }
  .modes-grid { grid-template-columns: 1fr; }
  .ref-projects { grid-template-columns: 1fr; }
  .axis-header { grid-template-columns: 44px 1fr 16px; padding: 1.1rem 1.2rem; }
  .axis-header-count { display: none; }
  .axis-body-desc { padding-left: 1.2rem; }
  .project-row { grid-template-columns: 1fr; padding: 1rem 1.2rem; }
}

/* ── i18n: language-aware visibility controlled via html[data-lang] ── */
.i18n { display: none !important; }
html[data-lang="de"] .i18n[data-lang="de"] { display: block !important; }
html[data-lang="en"] .i18n[data-lang="en"] { display: block !important; }

/* inline elements */
.i18n-inline { display: none !important; }
html[data-lang="de"] .i18n-inline[data-lang="de"] { display: inline !important; }
html[data-lang="en"] .i18n-inline[data-lang="en"] { display: inline !important; }

/* ── Founder LinkedIn link (About page) ── */
.founder-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.4rem;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  transition: gap 0.2s, color 0.2s;
}
.founder-linkedin:hover { gap: 0.7rem; color: var(--accent-light); }
.founder-linkedin svg { flex-shrink: 0; }

/* ── Research dropdown (Option B) ── */
.main-nav .nav-item { position: relative; display: flex; align-items: center; height: 64px; }
.nav-parent { display: inline-flex; align-items: center; gap: 0.34em; }
.nav-parent::after { content: ""; width: 4px; height: 4px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg) translateY(-1px); opacity: 0.55; transition: transform 0.2s, opacity 0.2s; }
.nav-item:hover .nav-parent::after, .nav-item:focus-within .nav-parent::after, .has-dropdown.open > .nav-parent::after { transform: rotate(225deg); opacity: 1; }
.nav-dropdown { position: absolute; top: 64px; left: -1rem; min-width: 224px; background: var(--ground); border: 1px solid var(--line); border-top: 1px solid var(--accent); padding: 0.4rem 0; display: none; flex-direction: column; box-shadow: 0 10px 26px rgba(26,25,22,0.08); }
.nav-item:hover .nav-dropdown, .nav-item:focus-within .nav-dropdown, .has-dropdown.open .nav-dropdown { display: flex; }
.nav-dropdown a { padding: 0.62rem 1.4rem; font-size: 0.62rem; letter-spacing: 0.1em; white-space: nowrap; color: var(--ink-soft); }
.nav-dropdown a:hover, .nav-dropdown a.active { color: var(--accent); background: var(--accent-dim); }
.has-dropdown:has(.nav-dropdown a.active) > .nav-parent { color: var(--accent); }

/* ── Research sub-links (mobile drawer) ── */
.mobile-nav-drawer a.drawer-sub { padding-left: 1.2rem; font-size: 0.62rem; color: var(--ink-muted); }
.mobile-nav-drawer a.drawer-sub:hover, .mobile-nav-drawer a.drawer-sub.active { color: var(--accent); }

/* ── Research rubric: empty contributions state ── */
.contributions-list { max-width: 68ch; }
.contributions-empty { font-family: var(--serif); font-style: italic; font-size: 0.9rem; color: var(--ink-faint); line-height: 1.85; }

/* ── Partner logo as <picture> (display:contents laesst bestehende img-Regeln greifen) ── */
.partner-logo-col picture { display: contents; }