/* ============================================================
   Aktiv Treuhand & Beratung GmbH — Design-System (Entwurf 2026)
   Erstellt von SGComputers GmbH · Entwurf, nicht live
   ============================================================ */

:root {
  --c-primary: #2b2f36;        /* Anthrazit — modern, edel, zurückhaltend */
  --c-primary-dark: #1b1e23;
  --c-primary-soft: #e9eaed;
  --c-accent: #b06a3c;         /* warmes Kupfer — Akzent */
  --c-accent-soft: #f4e7dc;
  --c-bg: #f7f8f9;
  --c-surface: #ffffff;
  --c-text: #23262b;
  --c-muted: #5f656e;
  --c-line: #e3e5e9;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(43, 47, 54, 0.10);
  --shadow-soft: 0 4px 14px rgba(43, 47, 54, 0.07);
  --container: 1120px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); }

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

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; color: var(--c-primary-dark); margin: 0 0 0.5em; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
.lead { font-size: 1.2rem; color: var(--c-muted); max-width: 46em; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 14px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-line);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 74px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--c-primary);
  color: #fff; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
  display: grid; place-items: center;
}
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; color: var(--c-primary-dark); line-height: 1.1; }
.brand-name small { display: block; font-family: var(--font); font-size: 0.7rem; font-weight: 500; color: var(--c-muted); letter-spacing: 0.06em; }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { text-decoration: none; font-weight: 500; font-size: 0.95rem; color: var(--c-text); }
.main-nav a:hover { color: var(--c-primary); }
.main-nav a.active { color: var(--c-primary); font-weight: 700; }

.btn {
  display: inline-block; padding: 12px 24px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: none; cursor: pointer;
}
.btn-primary { background: var(--c-primary); color: #fff !important; box-shadow: var(--shadow-soft); }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--c-primary); border: 1.5px solid var(--c-primary); }
.btn-ghost:hover { background: var(--c-primary-soft); }
.btn-light { background: #fff; color: var(--c-primary) !important; }
.btn-light:hover { transform: translateY(-1px); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--c-primary-dark); margin: 5px 0; border-radius: 2px; transition: transform 0.2s ease, opacity 0.2s ease; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 90px 0 70px;
  background:
    radial-gradient(ellipse 900px 480px at 85% -10%, rgba(176, 106, 60, 0.14), transparent 60%),
    radial-gradient(ellipse 800px 500px at -10% 110%, rgba(43, 47, 54, 0.08), transparent 60%),
    var(--c-bg);
  overflow: hidden;
}
.hero .container { max-width: 900px; text-align: center; }
.hero .lead { margin-left: auto; margin-right: auto; }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin: 30px 0 38px; }
.hero-badges { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: 999px; padding: 8px 16px;
  font-size: 0.85rem; font-weight: 600; color: var(--c-primary-dark);
  box-shadow: var(--shadow-soft);
}
.badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); }

/* ---------- Sections ---------- */
.section { padding: 76px 0; }
.section-alt { background: var(--c-surface); border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  display: flex; flex-direction: column;
}
a.card { text-decoration: none; color: inherit; }
a.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--c-primary-soft); color: var(--c-primary);
  display: grid; place-items: center; font-size: 1.5rem;
  margin-bottom: 18px;
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--c-muted); font-size: 0.95rem; margin-bottom: 0; }
.card .card-more { margin-top: auto; padding-top: 16px; font-weight: 600; font-size: 0.9rem; color: var(--c-primary); }

/* ---------- Listen ---------- */
.check-list { list-style: none; padding: 0; margin: 0 0 1em; }
.check-list li { padding: 9px 0 9px 34px; position: relative; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 13px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--c-primary-soft);
}
.check-list li::after {
  content: ""; position: absolute; left: 5px; top: 17px;
  width: 9px; height: 5px;
  border-left: 2.5px solid var(--c-primary);
  border-bottom: 2.5px solid var(--c-primary);
  transform: rotate(-45deg);
}

/* ---------- Regionen-Chips ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 12px; }
.chip {
  background: var(--c-primary-soft); color: var(--c-primary-dark);
  border-radius: 999px; padding: 10px 20px;
  font-weight: 600; font-size: 0.92rem;
}

/* ---------- Zitat / Bewertungs-Band ---------- */
.quote-band {
  background: var(--c-primary);
  color: #fff;
  padding: 64px 0;
}
.quote-band .container { max-width: 820px; text-align: center; }
.quote-band .stars { font-size: 1.5rem; letter-spacing: 6px; color: var(--c-accent); margin-bottom: 14px; }
.quote-band blockquote { font-family: var(--font-display); font-size: clamp(1.3rem, 2.5vw, 1.8rem); line-height: 1.4; margin: 0 0 14px; }
.quote-band .src { color: rgba(255, 255, 255, 0.75); font-size: 0.9rem; }

/* ---------- CTA-Band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--c-primary) 0%, #3a3f48 100%);
  border-radius: var(--radius);
  color: #fff;
  padding: 52px 48px;
  display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.cta-band h2 { color: #fff; margin-bottom: 6px; }
.cta-band p { color: rgba(255, 255, 255, 0.85); margin: 0; }

/* ---------- Kontakt ---------- */
.contact-card { padding: 30px 28px; }
.contact-card h3 { display: flex; align-items: center; gap: 10px; }
.contact-card address { font-style: normal; color: var(--c-muted); }
.contact-card a { font-weight: 600; text-decoration: none; }
.contact-lines { list-style: none; padding: 0; margin: 14px 0 0; }
.contact-lines li { padding: 4px 0; }

form.contact-form { display: grid; gap: 14px; }
.contact-form label { font-weight: 600; font-size: 0.9rem; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 13px 16px;
  border: 1.5px solid var(--c-line); border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 1rem; background: #fff;
}
.contact-form input:focus, .contact-form textarea:focus { outline: 2px solid var(--c-primary); border-color: var(--c-primary); }
.form-note { font-size: 0.82rem; color: var(--c-muted); }

/* ---------- FAQ ---------- */
details.faq {
  background: var(--c-surface); border: 1px solid var(--c-line);
  border-radius: var(--radius-sm); padding: 18px 22px; margin-bottom: 12px;
}
details.faq summary { font-weight: 600; cursor: pointer; color: var(--c-primary-dark); }
details.faq[open] summary { margin-bottom: 8px; }
details.faq p { color: var(--c-muted); margin-bottom: 0; }

/* ---------- Subpage-Hero ---------- */
.page-hero {
  padding: 70px 0 50px;
  background:
    radial-gradient(ellipse 700px 380px at 90% -20%, rgba(176, 106, 60, 0.12), transparent 60%),
    var(--c-bg);
}
.page-hero .container { max-width: 820px; }
.breadcrumb { font-size: 0.85rem; color: var(--c-muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--c-muted); }

.prose { max-width: 760px; }
.prose h2 { margin-top: 1.6em; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-primary-dark); color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 30px; margin-top: 0; font-size: 0.92rem;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 36px; margin-bottom: 40px; }
.site-footer h4 { color: #fff; font-size: 0.95rem; margin: 0 0 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { padding: 4px 0; }
.site-footer a { color: rgba(255, 255, 255, 0.8); text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: 0.82rem; color: rgba(255, 255, 255, 0.55);
}

/* ---------- Reveal-Animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 50px; }
  .section { padding: 56px 0; }
  .cta-band { padding: 36px 28px; }

  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; inset: 74px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--c-surface); border-bottom: 1px solid var(--c-line);
    padding: 10px 24px 20px;
    display: none;
  }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--c-line); }
  .main-nav a:last-child { border-bottom: none; }
  .main-nav .btn { margin-top: 12px; text-align: center; }
  body.nav-open .main-nav { display: flex; }
  body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
  body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
}