/* ============================================================
   9eeg.de — § 9 EEG erklärt · Soluxion-Design (neutraler Header)
   Brand: Navy #0B1F3A · Amber #F5A200 · Blue #1A5FD4
   Eigenständige, selbst-tragende Stylesheet (kein Soluxion-Logo).
   ============================================================ */

:root {
  --navy:        #0B1F3A;
  --navy-mid:    #0D2545;
  --navy-light:  #112A4A;
  --amber:       #F5A200;
  --amber-light: #FFD166;
  --blue:        #1A5FD4;
  --blue-light:  #7BA8F5;
  --green:       #10B981;
  --white:       #FFFFFF;
  --text:        rgba(255,255,255,0.80);
  --text-muted:  rgba(255,255,255,0.62);
  --text-dim:    rgba(255,255,255,0.40);
  --card-bg:     rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.09);
  --radius:      14px;
  --maxw:        1080px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
[id] { scroll-margin-top: 88px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  background: var(--navy);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--amber); }
img { max-width: 100%; display: block; }
.accent { color: var(--amber); }

/* ── Top-Bar ── */
.topbar { height: 4px; background: var(--amber); }

/* ── Navigation (neutraler §9-Brandmark, KEIN Soluxion-Logo) ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11,31,58,0.85);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-badge {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: linear-gradient(160deg, var(--navy-light), var(--navy-mid));
  border: 1px solid rgba(245,162,0,0.35);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 15px; color: var(--amber); letter-spacing: -0.5px;
}
.brand-word { display: flex; flex-direction: column; line-height: 1.1; }
.brand-word b { font-size: 18px; font-weight: 800; color: #fff; letter-spacing: -0.3px; }
.brand-word span { font-size: 10.5px; color: var(--text-muted); letter-spacing: 0.3px; }

.nav-links { list-style: none; display: flex; align-items: center; gap: 26px; }
.nav-links a {
  color: rgba(255,255,255,0.78); text-decoration: none; font-size: 15px; font-weight: 500;
  transition: color .15s;
}
.nav-links a:hover, .nav-links a.is-active { color: #fff; }
.nav-links a.nav-cta {
  background: var(--amber); color: var(--navy); font-weight: 700;
  padding: 9px 18px; border-radius: 100px;
  box-shadow: 0 6px 20px rgba(245,162,0,0.22);
}
.nav-links a.nav-cta:hover { background: var(--amber-light); color: var(--navy); }
.nav-burger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-burger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: .25s; }

/* ── Buttons ── */
.btn-primary, .btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: inherit; font-size: 15px; font-weight: 700;
  padding: 14px 28px; border-radius: 10px; text-decoration: none; cursor: pointer;
  border: none; transition: transform .15s, background .15s, box-shadow .15s;
}
.btn-primary { background: var(--amber); color: var(--navy); box-shadow: 0 8px 28px rgba(245,162,0,0.25); }
.btn-primary:hover { background: var(--amber-light); transform: translateY(-2px); color: var(--navy); }
.btn-secondary { background: transparent; color: #fff; border: 1px solid var(--card-border); }
.btn-secondary:hover { border-color: var(--amber); color: var(--amber); }

/* ── Sections ── */
section { padding: 72px 24px; }
.section-inner { max-width: var(--maxw); margin: 0 auto; }
.section-inner.narrow { max-width: 820px; }
.center { text-align: center; }
.section-tag {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--amber);
  background: rgba(245,162,0,0.10); border: 1px solid rgba(245,162,0,0.25);
  padding: 5px 12px; border-radius: 100px; margin-bottom: 16px;
}
.section-title { font-size: clamp(26px, 4vw, 40px); font-weight: 800; line-height: 1.15; letter-spacing: -0.5px; color: #fff; }
.section-desc { font-size: 17px; color: var(--text-muted); line-height: 1.7; margin-top: 14px; }
.section-desc.center { margin-left: auto; margin-right: auto; max-width: 680px; }

/* ── Hero (Startseite) ── */
.hero {
  padding: 96px 24px 64px; text-align: center;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(26,95,212,0.16) 0%, transparent 70%),
              linear-gradient(160deg, #0D2545 0%, #0B1F3A 100%);
  border-bottom: 1px solid var(--card-border);
}
.hero h1 { font-size: clamp(32px, 5.5vw, 52px); font-weight: 800; line-height: 1.12; letter-spacing: -0.5px; color: #fff; max-width: 880px; margin: 0 auto 18px; }
.hero .lead { font-size: 18px; color: var(--text-muted); max-width: 660px; margin: 0 auto 28px; line-height: 1.7; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ── Key-Points (Kurz gefasst) ── */
.keypoints {
  max-width: 820px; margin: 0 auto;
  background: linear-gradient(135deg, rgba(245,162,0,0.10), rgba(26,95,212,0.06));
  border: 1px solid rgba(245,162,0,0.30); border-radius: 14px; padding: 26px 30px; position: relative;
}
.keypoints .tag {
  position: absolute; top: -10px; left: 24px; background: var(--amber); color: var(--navy);
  font-size: 11px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; padding: 4px 10px; border-radius: 6px;
}
.keypoints ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.keypoints li { font-size: 15.5px; line-height: 1.6; color: rgba(255,255,255,0.84); padding-left: 24px; position: relative; }
.keypoints li::before { content: '✓'; position: absolute; left: 0; color: var(--amber); font-weight: 800; }
.keypoints li strong { color: #fff; }

/* ── Karten-Grid (Themen-Unterseiten) ── */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 44px; }
.topic-card {
  display: flex; flex-direction: column; text-decoration: none;
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px; padding: 26px 24px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.topic-card:hover { border-color: rgba(245,162,0,0.4); transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.3); }
.topic-card .ico {
  width: 46px; height: 46px; border-radius: 11px; background: rgba(245,162,0,0.10);
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.topic-card h3 { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.topic-card p { font-size: 14.5px; color: var(--text-muted); line-height: 1.6; flex: 1; }
.topic-card .more { color: var(--amber); font-weight: 700; font-size: 14px; margin-top: 14px; }

/* ── Quickcheck-Tabelle (Anlagengröße) ── */
.qtable { width: 100%; border-collapse: collapse; font-size: 14.5px; margin-top: 28px;
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px; overflow: hidden; }
.qtable th, .qtable td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--card-border); vertical-align: top; }
.qtable thead th { background: rgba(245,162,0,0.08); color: var(--amber); font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.qtable tbody tr:last-child td { border-bottom: none; }
.qtable td:first-child, .qtable strong { color: #fff; font-weight: 700; }
.qscroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ── Soluxion-Lenkungs-Band (CTA) ── */
.solux-cta {
  background: linear-gradient(135deg, rgba(245,162,0,0.10), rgba(26,95,212,0.08));
  border-top: 1px solid var(--card-border); border-bottom: 1px solid var(--card-border);
}
.solux-cta .inner { max-width: 820px; margin: 0 auto; text-align: center; }
.solux-cta h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; color: #fff; letter-spacing: -0.4px; }
.solux-cta p { font-size: 17px; color: var(--text-muted); max-width: 620px; margin: 14px auto 28px; line-height: 1.7; }
.solux-cta .btn-row { display: inline-flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.solux-cta .fineprint { margin-top: 18px; font-size: 13px; color: var(--text-dim); }

/* ── Artikel: Page-Hero + Breadcrumbs ── */
.page-hero {
  padding: 120px 24px 48px; text-align: center;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(26,95,212,0.14) 0%, transparent 70%),
              linear-gradient(160deg, #0D2545 0%, #0B1F3A 100%);
  border-bottom: 1px solid var(--card-border);
}
.breadcrumbs { max-width: 760px; margin: 0 auto 22px; font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--text-dim); }
.breadcrumbs a { color: var(--text-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--amber); }
.breadcrumbs .sep { margin: 0 8px; color: var(--text-dim); }
.breadcrumbs .current { color: var(--amber); }
.page-hero h1 { font-size: clamp(30px, 5vw, 48px); font-weight: 800; line-height: 1.15; letter-spacing: -0.5px; margin: 0 auto 16px; max-width: 860px; color: #fff; }
.page-hero .lead { font-size: 18px; color: var(--text-muted); max-width: 680px; margin: 0 auto; line-height: 1.7; }

.article-meta { max-width: 760px; margin: 0 auto 24px; font-size: 12px; color: var(--text-dim); letter-spacing: 0.3px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ── Artikel: Kurz-gefasst-Box ── */
.tldr { max-width: 760px; margin: 8px auto 44px; background: linear-gradient(135deg, rgba(245,162,0,0.10), rgba(26,95,212,0.06)); border: 1px solid rgba(245,162,0,0.30); border-radius: 14px; padding: 24px 28px; position: relative; }
.tldr-tag { position: absolute; top: -10px; left: 24px; background: var(--amber); color: var(--navy); font-size: 11px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; padding: 4px 10px; border-radius: 6px; }
.tldr ul { list-style: none; margin: 8px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.tldr li { font-size: 15px; line-height: 1.6; color: rgba(255,255,255,0.82); padding-left: 22px; position: relative; }
.tldr li::before { content: '✓'; position: absolute; left: 0; color: var(--amber); font-weight: 700; }
.tldr li strong { color: #fff; }

/* ── Artikel: Prosa ── */
.prose { max-width: 760px; margin: 0 auto; font-size: 16.5px; line-height: 1.75; color: rgba(255,255,255,0.82); }
.prose h2 { font-size: 26px; font-weight: 800; color: #fff; margin: 52px 0 14px; letter-spacing: -0.3px; padding-bottom: 10px; border-bottom: 1px solid var(--card-border); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 19px; font-weight: 700; color: #fff; margin: 34px 0 10px; }
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 18px 1.2em; }
.prose li { margin-bottom: 8px; }
.prose a:not(.btn-primary):not(.btn-secondary) { color: var(--amber); text-decoration: none; border-bottom: 1px solid rgba(245,162,0,0.4); }
.prose a:not(.btn-primary):not(.btn-secondary):hover { color: var(--amber-light); border-bottom-color: var(--amber-light); }
.prose strong { color: #fff; font-weight: 700; }

/* ── Artikel: Modul-/Daten-Tabelle ── */
.module-table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 18px 0 24px; border-radius: 12px; overflow: hidden; background: var(--card-bg); border: 1px solid var(--card-border); }
.module-table th, .module-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--card-border); vertical-align: top; }
.module-table thead th { background: rgba(245,162,0,0.10); color: var(--amber); font-size: 12px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; }
.module-table tbody tr:last-child td { border-bottom: none; }
.module-table strong { color: #fff; }

/* ── Artikel: Callout ── */
.callout { background: var(--card-bg); border-left: 3px solid var(--amber); border-radius: 8px; padding: 18px 22px; margin: 24px 0; font-size: 14.5px; line-height: 1.65; color: var(--text-muted); }
.callout strong { color: #fff; }
.callout-tag { display: inline-block; font-size: 10px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--amber); margin-bottom: 6px; }

/* ── Artikel: Produkt-/Soluxion-Callout ── */
.product-callout { background: linear-gradient(135deg, rgba(245,162,0,0.08), rgba(26,95,212,0.06)); border: 1px solid rgba(245,162,0,0.25); border-radius: 16px; padding: 32px; margin: 44px 0; text-align: center; }
.product-callout h3 { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.product-callout p { color: var(--text-muted); max-width: 560px; margin: 0 auto 20px; font-size: 15px; line-height: 1.65; }
.product-callout .btn-row { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* ── Artikel: FAQ ── */
details.faq { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 10px; margin-bottom: 10px; }
details.faq[open] { border-color: rgba(245,162,0,0.25); }
details.faq summary { list-style: none; cursor: pointer; padding: 16px 22px; font-weight: 700; color: #fff; font-size: 15px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: '+'; color: var(--amber); font-size: 22px; font-weight: 400; transition: transform .2s; }
details.faq[open] summary::after { transform: rotate(45deg); }
details.faq > div { padding: 0 22px 18px; color: var(--text-muted); font-size: 14.5px; line-height: 1.7; }
details.faq a { color: var(--amber); }

/* ── Artikel: Quellen ── */
.sources { max-width: 760px; margin: 48px auto 0; padding-top: 28px; border-top: 1px solid var(--card-border); font-size: 13px; color: var(--text-muted); line-height: 1.7; }
.sources h2 { font-size: 14px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--amber); margin-bottom: 16px; }
.sources ul { list-style: none; }
.sources li { margin-bottom: 8px; }
.sources a { color: var(--amber); }
.disclaimer { margin-top: 16px; font-size: 12px; color: var(--text-dim); }

/* ── Verwandte Themen (Chips) ── */
.related { max-width: 760px; margin: 40px auto 0; display: flex; flex-wrap: wrap; gap: 10px; }
.related a { font-size: 13.5px; color: rgba(255,255,255,0.8); background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 100px; padding: 8px 16px; text-decoration: none; }
.related a:hover { border-color: var(--amber); color: var(--amber); }

/* ── Footer ── */
footer { background: var(--navy-mid); border-top: 1px solid var(--card-border); padding: 48px 24px 28px; }
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.footer-brand .brand { margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); max-width: 320px; line-height: 1.6; }
.footer-col h4 { font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--amber); margin-bottom: 14px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col a { color: rgba(255,255,255,0.72); text-decoration: none; font-size: 14.5px; }
.footer-col a:hover { color: var(--amber); }
.footer-bottom { max-width: var(--maxw); margin: 32px auto 0; padding-top: 22px; border-top: 1px solid var(--card-border); font-size: 12.5px; color: var(--text-dim); line-height: 1.7; }
.footer-bottom .solux-note { color: var(--text-muted); }
.footer-bottom .solux-note a { color: var(--amber); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 860px) {
  .card-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 26px; }
}
@media (max-width: 760px) {
  .nav-burger { display: block; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--navy-mid); border-bottom: 1px solid var(--card-border);
    padding: 8px 0; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { padding: 0 24px; }
  .nav-links a { display: block; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav-links a.nav-cta { text-align: center; margin: 10px 0; }
  section { padding: 56px 20px; }
  .hero { padding: 64px 20px 48px; }
  .footer-grid { grid-template-columns: 1fr; }
}