/* Nuola Solar – Homepage
   Farben & Typografie aus dem Nuola Style Guide (identisch zum Energy Dashboard):
   Solar Gold #d9a441 · Nuola Schwarz #1c1c21 · Neutral-Skala (Slate) · IBM Plex Sans.
   Nur helles Design (kein Dark Mode).
   Hinweis: IBM Plex ist hier per System-Fallback gesetzt; für den Go-Live die
   woff2-Dateien selbst hosten (siehe README), NICHT über Google-Fonts-CDN (DSGVO). */

:root {
  --color-primary: #d9a441;        /* Solar Gold */
  --color-primary-hover: #cf982f;
  --color-primary-dark: #a2762b;   /* Gold Dunkel */
  --color-primary-tint: #f6edda;   /* Gold Hell */
  --color-ink: #1c1c21;            /* Nuola Schwarz */
  --color-text: #334155;           /* Slate 700 */
  --color-muted: #64748b;          /* Slate 500 */
  --color-bg: #f9f9fb;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-focus: #1c1c21;

  --font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --radius: 14px;
  --shadow: 0 1px 2px rgba(15, 17, 21, 0.04), 0 8px 24px rgba(15, 17, 21, 0.06);
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3 {
  color: var(--color-ink);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin: 0 0 0.6rem;
}
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1rem; }

a { color: var(--color-primary-dark); }

/* Sichtbarer Fokus (WCAG 2.2) */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: 6px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Kopfzeile ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 96px;
  gap: 1rem;
}
.brand-logo {
  display: block;
  height: 68px; /* gleiche Größe wie im Mieter-Portal */
  width: auto;
}
.site-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.95rem;
}
.site-nav a {
  color: var(--color-text);
  text-decoration: none;
}
.site-nav a:hover { color: var(--color-ink); text-decoration: underline; }

/* ---------- Hero (Startseite) ---------- */
main { flex: 1 0 auto; }
main.home {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero {
  width: 100%;
  padding: clamp(3rem, 8vw, 5rem) 0;
  text-align: center;
}
.hero h1 { font-size: clamp(2.5rem, 6vw, 3.75rem); }
.hero h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  margin: 1.25rem auto 1.5rem;
  border-radius: 2px;
  background: var(--color-primary);
}
.hero .lead {
  max-width: 620px;
  margin: 0 auto;
  font-size: clamp(1.15rem, 2.4vw, 1.4rem);
  color: var(--color-text);
}

/* ---------- Inhalts-Seiten (Impressum/Datenschutz) ---------- */
.content { padding: clamp(2.5rem, 6vw, 4rem) 0 4rem; }
.content .prose {
  max-width: 760px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--shadow);
}
.prose h2 { margin-top: 2rem; }
.prose h2:first-of-type { margin-top: 0; }
.prose h3 { margin-top: 1.5rem; }
.prose ul { padding-left: 1.25rem; }
.prose li { margin-bottom: 0.35rem; }
.prose a { color: var(--color-primary-dark); }
.prose .platzhalter {
  background: var(--color-primary-tint);
  color: var(--color-ink);
  padding: 0.05em 0.35em;
  border-radius: 4px;
  font-weight: 600;
}
.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.95rem;
}
.back-link:hover { color: var(--color-ink); }

/* ---------- Fußzeile ---------- */
.site-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 2rem 0;
  font-size: 0.9rem;
  color: var(--color-muted);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}
.site-footer nav {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.site-footer a { color: var(--color-muted); text-decoration: none; }
.site-footer a:hover { color: var(--color-ink); text-decoration: underline; }

@media (max-width: 560px) {
  .site-header .container { min-height: 76px; }
  .site-nav { gap: 1rem; font-size: 0.9rem; }
  .brand-logo { height: 52px; }
}