/* =============================================================
   abrechnung.immo — Stylesheet
   Mobile-first, statisch, ohne Framework
   ============================================================= */

:root {
  --color-primary: #7049ba;
  --color-primary-dark: #5a36a3;
  --color-primary-light: #8b66d4;
  --color-accent: #fbb040;
  --color-text: #2c2c2c;
  --color-text-muted: #5e6472;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f5fb;
  --color-border: #e6e2ee;
  --color-dark: #1a1a1a;
  --color-dark-2: #2a2a2a;

  --max-w: 1180px;
  --gap: 1.25rem;
  --radius: 4px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 14px rgba(0,0,0,.10);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover, a:focus { color: var(--color-primary-dark); text-decoration: underline; }

/* -------------------- Layout -------------------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* -------------------- Top Bar -------------------- */
.top-bar {
  background: var(--color-dark);
  color: #cfcfcf;
  font-size: .875rem;
  padding: .5rem 0;
}
.top-bar .container {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.top-bar a { color: #cfcfcf; }
.top-bar a:hover { color: #fff; }
.top-bar .tb-contact { display: flex; gap: 1.5rem; flex-wrap: wrap; }

/* -------------------- Brand / Header -------------------- */
.site-header {
  position: sticky; top: 0;
  z-index: 30;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: .75rem;
  text-decoration: none;
  color: var(--color-primary);
}
.brand img { height: 72px; width: auto; }
.brand-text { font-size: 3.25rem; font-weight: 700; letter-spacing: -.02em; }
.brand-tag { font-size: .8rem; color: var(--color-text-muted); margin-left: .4rem; }

/* -------------------- Navigation -------------------- */
.main-nav {
  background: var(--color-primary);
}
.main-nav-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  flex-wrap: wrap;
}
.main-nav-list a {
  display: block;
  padding: .85rem 1.25rem;
  color: #fff;
  font-weight: 500;
  text-decoration: none;
  border-right: 1px solid rgba(255,255,255,.12);
}
.main-nav-list a:hover,
.main-nav-list a:focus,
.main-nav-list a.active {
  background: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}
.nav-toggle {
  display: none;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: .85rem 1.25rem;
  font-size: 1rem;
  cursor: pointer;
  width: 100%;
  text-align: left;
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .main-nav-list { display: none; flex-direction: column; }
  .main-nav-list.open { display: flex; }
  .main-nav-list a { border-right: none; border-bottom: 1px solid rgba(255,255,255,.12); }
  .brand-text { font-size: 2.25rem; }
  .brand img { height: 40px; }
}

/* -------------------- Page Hero -------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 3rem 0 3rem;
}
.page-hero h1 {
  color: #fff;
  margin: 0 0 .5rem;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  font-weight: 700;
}
.page-hero p { margin: 0; opacity: .95; max-width: 60ch; }
.page-hero.has-image {
  position: relative;
  background: var(--color-primary-dark);
}
.page-hero.has-image img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .35;
  z-index: 0;
}
.page-hero .container { position: relative; z-index: 1; }

/* -------------------- Sections -------------------- */
section { padding: 3rem 0; }
section.alt { background: var(--color-bg-alt); }

h1, h2, h3, h4 {
  color: var(--color-text);
  line-height: 1.25;
  font-weight: 700;
}
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); margin: 0 0 1rem; }
h2 { font-size: clamp(1.4rem, 3vw, 1.875rem); margin: 0 0 1rem; color: var(--color-primary-dark); }
h3 { font-size: 1.25rem; margin: 1.5rem 0 .75rem; color: var(--color-primary-dark); }
h4 { font-size: 1.05rem; margin: 1rem 0 .5rem; }

p { margin: 0 0 1rem; }

ul, ol { padding-left: 1.25rem; margin: 0 0 1rem; }

/* -------------------- Two-Column Layout -------------------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 800px) {
  .two-col { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
}

.persons {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.person-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}
.person-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: .75rem;
}
.person-card h3 { margin: 0 0 .25rem; font-size: 1.1rem; color: var(--color-primary-dark); }
.person-card p { margin: 0; color: var(--color-text-muted); font-size: .9rem; }

/* -------------------- Service Tiles -------------------- */
.tiles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .75rem;
  margin: 1.5rem 0;
}
@media (min-width: 480px) {
  .tiles { grid-template-columns: repeat(4, 1fr); }
}
.tile {
  display: block;
  background: var(--color-primary);
  color: #fff;
  padding: .65rem .75rem;
  border-radius: var(--radius);
  text-align: center;
  font-weight: 600;
  font-size: .9rem;
  text-decoration: none;
  transition: background .15s, transform .15s;
}
.tile:hover, .tile:focus {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  text-decoration: none;
}

/* -------------------- Logo Grid (Software) -------------------- */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  align-items: center;
  margin: 2rem 0;
}
.logo-grid img { max-height: 130px; width: auto; margin: 0 auto; }

/* -------------------- Buttons -------------------- */
.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff !important;
  padding: .65rem 1.4rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  border: none;
  cursor: pointer;
}
.btn:hover, .btn:focus {
  background: var(--color-primary-dark);
  text-decoration: none;
}
.btn-outline {
  background: transparent;
  color: var(--color-primary) !important;
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff !important;
}

/* -------------------- Info Box / Notice -------------------- */
.notice {
  background: #fff8e1;
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin: 1.5rem 0;
}
.notice strong { color: var(--color-dark); }

/* -------------------- Address Block -------------------- */
.addresses {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin: 1.5rem 0;
}
.address-block {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--color-bg);
}
.address-block h3 { margin-top: 0; }
.address-block p { margin: 0 0 .25rem; }

/* -------------------- Footer -------------------- */
.site-footer {
  background: var(--color-dark);
  color: #cfcfcf;
  padding: 2.5rem 0 1.25rem;
  margin-top: 4rem;
  font-size: .9rem;
}
.site-footer a { color: #cfcfcf; }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-grid h4 { color: #fff; margin: 0 0 .75rem; font-size: 1rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: .35rem; }
.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 1rem;
  text-align: center;
  font-size: .8rem;
  color: #888;
}

/* -------------------- Legal pages (Impressum/Datenschutz) -------------------- */
.legal-page {
  max-width: 850px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}
.legal-page h1 { color: var(--color-primary-dark); }
.legal-page h2 {
  margin-top: 2.5rem;
  padding-bottom: .35rem;
  border-bottom: 2px solid var(--color-border);
}
.legal-page h3 { margin-top: 1.75rem; }
.legal-page h4 { margin-top: 1.25rem; }

/* -------------------- Utility -------------------- */
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.lead { font-size: 1.15rem; color: var(--color-text-muted); }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* Skip to content (a11y) */
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-primary); color: #fff;
  padding: .5rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }