/* ============================================================
   EA-Rechnung — Landingpage Styles
   Dark Theme: Slate (#0f172a, #1e293b), Akzent Blau (#3b82f6)
   ============================================================ */

:root {
  --bg: #0f172a;
  --bg-alt: #0b1220;
  --surface: #1e293b;
  --surface-2: #263449;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --green: #22c55e;
  --green-soft: rgba(34, 197, 94, 0.08);
  --green-border: rgba(34, 197, 94, 0.45);
  --radius: 12px;
  --max-w: 1140px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; color: #f1f5f9; }

img { max-width: 100%; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 88px 0; }
section.alt { background: var(--bg-alt); }

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.3rem);
  margin-bottom: 16px;
}

.section-sub {
  color: var(--text-muted);
  max-width: 720px;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

/* ---------- Header / Nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: #f1f5f9;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo:hover { text-decoration: none; }
.logo .logo-badge {
  background: var(--accent);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  border-radius: 6px;
  padding: 3px 7px;
  letter-spacing: 0.04em;
}

.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}
.main-nav a:hover { color: var(--text); text-decoration: none; }

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--accent-hover); }

.nav-toggle { display: none; }

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

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn:hover { text-decoration: none; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: #fff; }

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

.hero {
  padding: 96px 0 80px;
  background:
    radial-gradient(ellipse 60% 50% at 70% 10%, rgba(59, 130, 246, 0.14), transparent 65%),
    var(--bg);
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.hero .tagline {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
}

.hero .sub {
  color: var(--text-muted);
  font-size: 1.06rem;
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-badges {
  margin-top: 28px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.hero-badges span::before {
  content: "✓";
  color: var(--green);
  margin-right: 6px;
  font-weight: 700;
}

/* ---------- CSS-Mockup (App-Dashboard) ---------- */

.mockup {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  font-size: 0.82rem;
}

.mockup-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.mockup-titlebar .dot {
  width: 11px; height: 11px; border-radius: 50%;
}
.mockup-titlebar .dot.r { background: #ef4444; }
.mockup-titlebar .dot.y { background: #f59e0b; }
.mockup-titlebar .dot.g { background: #22c55e; }
.mockup-titlebar .mockup-title {
  margin-left: 10px;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.mockup-body { display: flex; min-height: 340px; }

.mockup-sidebar {
  width: 148px;
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  padding: 14px 0;
  flex-shrink: 0;
}
.mockup-sidebar .mi {
  padding: 7px 16px;
  color: var(--text-muted);
  border-left: 3px solid transparent;
}
.mockup-sidebar .mi.active {
  color: #fff;
  background: var(--accent-soft);
  border-left-color: var(--accent);
}

.mockup-main { flex: 1; padding: 16px 18px; }

.mockup-stats { display: flex; gap: 10px; margin-bottom: 16px; }
.mockup-stat {
  flex: 1;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
.mockup-stat .v { font-weight: 800; font-size: 1rem; color: #f1f5f9; }
.mockup-stat .l { color: var(--text-muted); font-size: 0.7rem; }
.mockup-stat .v.green { color: var(--green); }

.mockup-table { width: 100%; border-collapse: collapse; }
.mockup-table th {
  text-align: left;
  color: var(--text-muted);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}
.mockup-table td {
  padding: 8px;
  border-bottom: 1px solid rgba(51, 65, 85, 0.5);
  color: var(--text);
}
.mockup-table td.num { font-weight: 600; color: #cbd5e1; }
.badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
}
.badge.paid { background: rgba(34, 197, 94, 0.15); color: var(--green); }
.badge.open { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.badge.rc { background: var(--accent-soft); color: var(--accent); }

/* ---------- Feature-Grid ---------- */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: border-color 0.15s ease;
}
.feature-card:hover { border-color: var(--accent); }

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.feature-icon svg { width: 24px; height: 24px; stroke: var(--accent); }

.feature-card h3 { font-size: 1.08rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.95rem; }

/* ---------- Für wen ---------- */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.audience-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.audience-item .check {
  color: var(--green);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.4;
}
.audience-item h3 { font-size: 1rem; margin-bottom: 4px; }
.audience-item p { color: var(--text-muted); font-size: 0.92rem; }

/* ---------- Preise ---------- */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 420px));
  gap: 24px;
  justify-content: center;
}

.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 34px 30px;
  position: relative;
}
.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 18px 44px rgba(59, 130, 246, 0.15);
}
.price-card .plan-name {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.price-card.featured .plan-name { color: var(--accent); }
.price-card .price {
  font-size: 2.4rem;
  font-weight: 800;
  color: #f1f5f9;
  margin-bottom: 4px;
}
.price-card .price small {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}
.price-card .price-note { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 22px; }
.price-card ul { list-style: none; margin-bottom: 26px; }
.price-card ul li {
  padding: 7px 0 7px 26px;
  position: relative;
  color: var(--text);
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
}
.price-card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}
.price-card .btn { width: 100%; text-align: center; }

.pricing-note {
  text-align: center;
  color: var(--text-muted);
  margin-top: 28px;
  font-size: 0.95rem;
}

/* ---------- DSGVO-Sektion (grüner Akzent) ---------- */

.dsgvo-section {
  background: var(--green-soft);
  border-top: 1px solid var(--green-border);
  border-bottom: 1px solid var(--green-border);
}
.dsgvo-section .section-label { color: var(--green); }

.dsgvo-box {
  border: 1.5px solid var(--green-border);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.6);
  padding: 36px;
}

.dsgvo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 32px;
  margin-top: 8px;
}

.dsgvo-item { display: flex; gap: 12px; align-items: flex-start; }
.dsgvo-item .shield {
  color: var(--green);
  font-weight: 800;
  flex-shrink: 0;
  line-height: 1.5;
}
.dsgvo-item p { color: var(--text); font-size: 0.95rem; }
.dsgvo-item p strong { color: #f1f5f9; display: block; }
.dsgvo-item p span { color: var(--text-muted); }

/* ---------- Blog ---------- */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease;
}
.blog-card:hover { border-color: var(--accent); text-decoration: none; }

.blog-card .blog-tag {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
}
.blog-card h3 { font-size: 1.05rem; margin-bottom: 10px; color: #f1f5f9; }
.blog-card p { color: var(--text-muted); font-size: 0.92rem; flex: 1; }
.blog-card .read-more {
  margin-top: 16px;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
}

/* ---------- FAQ (Accordion) ---------- */

.faq-list { max-width: 820px; }

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-list summary {
  padding: 18px 22px;
  font-weight: 600;
  font-size: 1.02rem;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 52px;
  color: #f1f5f9;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.15s ease;
}
.faq-list details[open] summary::after {
  content: "−";
}

.faq-list .faq-answer {
  padding: 0 22px 20px;
  color: var(--text-muted);
  font-size: 0.96rem;
}

/* ---------- Download ---------- */

.download-section {
  background:
    radial-gradient(ellipse 55% 70% at 50% 100%, rgba(59, 130, 246, 0.16), transparent 70%),
    var(--bg-alt);
  text-align: center;
}
.download-section .section-sub { margin-left: auto; margin-right: auto; }

.sysreq {
  margin-top: 26px;
  display: inline-flex;
  gap: 26px;
  flex-wrap: wrap;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.sysreq span strong { color: var(--text); font-weight: 600; }

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

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-grid h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.footer-grid p, .footer-grid a {
  color: var(--text-muted);
  font-size: 0.92rem;
}
.footer-grid ul { list-style: none; }
.footer-grid ul li { margin-bottom: 8px; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ---------- Artikel / Rechtsseiten ---------- */

.page-hero {
  padding: 72px 0 48px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 {
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  max-width: 820px;
  margin-bottom: 14px;
}
.page-hero .page-sub { color: var(--text-muted); max-width: 720px; font-size: 1.02rem; }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 8px; color: var(--border); }

.article-meta {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 16px;
  flex-wrap: wrap;
}

.article-body {
  max-width: 780px;
  padding: 56px 0 80px;
}
.article-body h2 {
  font-size: 1.45rem;
  margin: 44px 0 14px;
}
.article-body h3 {
  font-size: 1.15rem;
  margin: 30px 0 10px;
}
.article-body p { margin-bottom: 18px; color: var(--text); }
.article-body ul, .article-body ol {
  margin: 0 0 18px 24px;
  color: var(--text);
}
.article-body li { margin-bottom: 8px; }
.article-body strong { color: #f1f5f9; }

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0 26px;
  font-size: 0.94rem;
}
.article-body th, .article-body td {
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--border);
}
.article-body th { background: var(--surface); color: #f1f5f9; }
.article-body td { background: var(--bg-alt); }

.callout {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  padding: 18px 22px;
  margin: 26px 0;
  color: var(--text);
  font-size: 0.96rem;
}
.callout.green {
  background: var(--green-soft);
  border-left-color: var(--green);
}

.article-cta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
  text-align: center;
  margin: 48px 0 0;
}
.article-cta h3 { margin-bottom: 10px; }
.article-cta p { color: var(--text-muted); margin-bottom: 22px; }

/* ---------- Legal-Seiten ---------- */

.legal-body { max-width: 780px; padding: 48px 0 80px; }
.legal-body h2 { font-size: 1.25rem; margin: 36px 0 12px; }
.legal-body p { margin-bottom: 14px; color: var(--text); }
.legal-body ul { margin: 0 0 14px 24px; }
.legal-body li { margin-bottom: 6px; }
.legal-body address { font-style: normal; color: var(--text); line-height: 1.7; }

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

@media (max-width: 960px) {
  .hero .container { grid-template-columns: 1fr; }
  .features-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  section { padding: 60px 0; }
  .main-nav { display: none; }
  .features-grid, .blog-grid, .audience-grid, .dsgvo-grid,
  .pricing-grid, .footer-grid { grid-template-columns: 1fr; }
  .mockup-sidebar { display: none; }
  .hero { padding: 64px 0 56px; }
  .dsgvo-box { padding: 24px; }
}