/* ============================================================
   Mieten macht Sinn — Stylesheet
   Mobile-first. Ein einziges Stylesheet für alle Seiten.
   Aufbau: Variablen -> Reset -> Typografie -> Layout -> Komponenten -> Seiten -> Responsive
   ============================================================ */

:root {
  /* Farben */
  --color-bg: #faf9f6;
  --color-surface: #ffffff;
  --color-ink: #14171a;
  --color-ink-soft: #52585e;
  --color-ink-faint: #85898f;
  --color-line: #e6e4df;
  --color-primary: #1f6f54;
  --color-primary-dark: #164f3d;
  --color-primary-soft: #e9f3ee;
  --color-danger: #b3261e;

  /* Typografie */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Radien & Schatten */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 1px 2px rgba(20, 23, 26, 0.05), 0 10px 28px -12px rgba(20, 23, 26, 0.14);
  --shadow-hover: 0 16px 36px -12px rgba(20, 23, 26, 0.22);

  /* Layout */
  --container: 1180px;
  --container-narrow: 760px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* Sichtbarer Fokus-Rahmen für Tastaturnutzung (Barrierefreiheit) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- Typografie ---------- */
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.01em; color: var(--color-ink); }
h1 { font-size: 2.1rem; line-height: 1.15; }
h2 { font-size: 1.7rem; line-height: 1.2; }
h3 { font-size: 1.2rem; line-height: 1.3; }
p { color: var(--color-ink-soft); }
.text-lead { font-size: 1.1rem; color: var(--color-ink-soft); }
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: 3.25rem; }
.section--tight { padding-block: 2rem; }
.section--surface { background: var(--color-surface); }
.section--primary { background: var(--color-primary); color: #fff; }
.section--primary p { color: rgba(255, 255, 255, 0.86); }
.section--primary h2 { color: #fff; }
.section-head { max-width: 640px; margin-bottom: 2rem; }
.section-head.center { margin-inline: auto; text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-card);
}
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-hover); }
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost-inverse {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.btn-ghost-inverse:hover { background: rgba(255, 255, 255, 0.2); }
.btn-block { width: 100%; }
.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.9rem; }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }

/* ---------- Header / Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.85rem;
}
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-weight: 800; font-size: 1.15rem; color: var(--color-ink); }
.brand-tag { font-size: 0.72rem; color: var(--color-ink-faint); font-weight: 500; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}
.nav-toggle svg { width: 20px; height: 20px; }

.main-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
  padding: 0.5rem 1.25rem 1.25rem;
  display: none;
  flex-direction: column;
  gap: 0.2rem;
}
.main-nav.is-open { display: flex; }
.main-nav a:not(.btn) {
  padding: 0.75rem 0.25rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  border-bottom: 1px solid var(--color-line);
}
.main-nav a:not(.btn):last-of-type { border-bottom: none; }
.main-nav a[aria-current="page"]:not(.btn) { color: var(--color-primary); }
.main-nav .btn { margin-top: 0.75rem; }
.header-cta-desktop { display: none; }

/* ---------- Hero ---------- */
.hero { padding-block: 2.75rem 3.25rem; }
.hero-inner { display: flex; flex-direction: column; gap: 1.75rem; }
.hero h1 { max-width: 20ch; }
.hero .text-lead { max-width: 46ch; margin-top: 0.9rem; }
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
}
.hero-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-soft), #f1efe8);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.hero-visual img { width: 100%; height: 100%; object-fit: contain; }

/* ---------- USP / Feature Grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.feature-icon svg { width: 22px; height: 22px; color: var(--color-primary); }
.feature-card h3 { margin-bottom: 0.4rem; }
.feature-card p { font-size: 0.95rem; }

/* ---------- Ablauf / Steps ---------- */
.steps { display: grid; grid-template-columns: 1fr; gap: 1.5rem; counter-reset: step; }
.step { position: relative; padding-left: 3.4rem; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step h3 { margin-bottom: 0.3rem; }
.step p { font-size: 0.95rem; }

/* ---------- Artikel-Karten ---------- */
.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.article-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.article-card-media {
  aspect-ratio: 4 / 3;
  background: var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.75rem;
}
.article-card-media img { width: 100%; height: 100%; object-fit: contain; }
.article-card-body { padding: 1.35rem; display: flex; flex-direction: column; gap: 0.6rem; flex: 1; }
.article-card-title { font-size: 1.15rem; }
.article-card-desc { font-size: 0.93rem; flex: 1; }
.article-card-price {
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 1.05rem;
}
.article-card-price span { font-weight: 500; color: var(--color-ink-faint); font-size: 0.82rem; }
.article-card-actions { display: flex; gap: 0.6rem; margin-top: 0.4rem; flex-wrap: wrap; }
.article-card-actions .btn { flex: 1; }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; max-width: var(--container-narrow); margin-inline: auto; }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 0.25rem 1.25rem;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  padding: 1.05rem 1.75rem 1.05rem 0;
  position: relative;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 1rem;
  font-size: 1.3rem;
  color: var(--color-primary);
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { padding-bottom: 1.05rem; font-size: 0.95rem; }

/* ---------- CTA-Banner ---------- */
.cta-banner { text-align: center; }
.cta-banner h2 { max-width: 24ch; margin-inline: auto; }
.cta-banner .text-lead { max-width: 46ch; margin-inline: auto; margin-top: 0.75rem; }
.cta-banner .cta-row { justify-content: center; margin-top: 1.5rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-ink); color: rgba(255, 255, 255, 0.75); padding-block: 2.75rem 1.75rem; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { margin-top: 0.75rem; font-size: 0.9rem; max-width: 32ch; }
.footer-col h4 { color: #fff; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.9rem; }
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; font-size: 0.92rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
  font-size: 0.82rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

/* ---------- Formulare ---------- */
.form-grid { display: grid; grid-template-columns: 1fr; gap: 1.15rem; }
.form-field { display: flex; flex-direction: column; gap: 0.45rem; }
.form-field label { font-weight: 600; font-size: 0.92rem; }
.form-field .hint { font-size: 0.8rem; color: var(--color-ink-faint); font-weight: 400; }
.form-field input,
.form-field select,
.form-field textarea {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.95rem;
  background: var(--color-surface);
  width: 100%;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { border-color: var(--color-primary); }
.form-field textarea { resize: vertical; min-height: 120px; }
.form-required::after { content: " *"; color: var(--color-danger); }
.form-note { font-size: 0.85rem; color: var(--color-ink-faint); }
.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status {
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 0.92rem;
  font-weight: 600;
  display: none;
}
.form-status.is-success { display: block; background: var(--color-primary-soft); color: var(--color-primary-dark); }
.form-status.is-error { display: block; background: #fbeceb; color: var(--color-danger); }

.contact-alt {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-line);
}
.contact-alt a { font-weight: 600; color: var(--color-primary-dark); }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 0.85rem; color: var(--color-ink-faint); margin-bottom: 1.25rem; }
.breadcrumb a:hover { color: var(--color-primary); }

/* ---------- Detailseite ---------- */
.article-detail { display: flex; flex-direction: column; gap: 2rem; }
.gallery-main {
  aspect-ratio: 4 / 3;
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
  overflow: hidden;
}
.gallery-main img { width: 100%; height: 100%; object-fit: contain; }
.gallery-thumbs { display: flex; gap: 0.6rem; margin-top: 0.75rem; }
.gallery-thumbs button {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  border: 2px solid transparent;
  padding: 0.5rem;
}
.gallery-thumbs button.is-active { border-color: var(--color-primary); }

.detail-price {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary-dark);
}
.detail-price span { font-size: 0.95rem; font-weight: 500; color: var(--color-ink-faint); }

.detail-block { padding-top: 1.75rem; border-top: 1px solid var(--color-line); }
.detail-block h2 { font-size: 1.3rem; margin-bottom: 0.85rem; }
.spec-list { display: grid; grid-template-columns: 1fr; gap: 0.6rem; }
.spec-row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.55rem 0; border-bottom: 1px dashed var(--color-line); font-size: 0.95rem; }
.spec-row span:first-child { color: var(--color-ink-faint); }
.spec-row span:last-child { font-weight: 600; text-align: right; }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-list li {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
}
.checklist li { position: relative; padding-left: 1.5rem; margin-bottom: 0.5rem; font-size: 0.95rem; color: var(--color-ink-soft); }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }

.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 400;
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  padding: 0.85rem 1.25rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 -8px 24px -12px rgba(20, 23, 26, 0.18);
}
.sticky-cta strong { font-size: 1.05rem; }

/* ---------- Rechtstexte (Impressum, Datenschutz, Mietbedingungen) ---------- */
.legal-content h2 { margin-top: 2rem; margin-bottom: 0.75rem; font-size: 1.25rem; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 { margin-top: 1.25rem; margin-bottom: 0.5rem; font-size: 1.05rem; }
.legal-content p { margin-bottom: 0.85rem; }
.legal-content ul { margin-bottom: 0.85rem; }
.legal-content li { position: relative; padding-left: 1.1rem; margin-bottom: 0.45rem; color: var(--color-ink-soft); }
.legal-content li::before { content: "–"; position: absolute; left: 0; color: var(--color-ink-faint); }
.legal-note {
  background: var(--color-primary-soft);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
  color: var(--color-primary-dark);
}
.placeholder { background: #fff3cd; padding: 0.05rem 0.35rem; border-radius: 4px; color: #7a5b00; font-weight: 700; }

/* ---------- 404 ---------- */
.error-page { text-align: center; padding-block: 5rem; }
.error-page .eyebrow { display: block; }

/* ---------- Utilities ---------- */
.mt-lg { margin-top: 2rem; }
.text-center { text-align: center; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   Responsive: ab Tablet (600px)
   ============================================================ */
@media (min-width: 600px) {
  h1 { font-size: 2.6rem; }
  h2 { font-size: 2rem; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
}

/* ============================================================
   Responsive: ab Desktop (900px)
   ============================================================ */
@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .header-cta-desktop { display: inline-flex; }
  .main-nav {
    position: static;
    display: flex !important;
    flex-direction: row;
    align-items: center;
    background: none;
    border: none;
    padding: 0;
    gap: 1.75rem;
    width: auto;
  }
  .main-nav a:not(.btn) { border-bottom: none; padding: 0.4rem 0; }
  .main-nav .btn { display: none; }

  .hero-inner { flex-direction: row; align-items: center; }
  .hero-inner > * { flex: 1; }
  .hero h1 { font-size: 3.1rem; }

  .feature-grid { grid-template-columns: repeat(4, 1fr); }
  .article-grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }

  .article-detail { flex-direction: row; align-items: flex-start; }
  .article-detail > .gallery-col { flex: 0 0 44%; position: sticky; top: 6rem; }
  .article-detail > .info-col { flex: 1; }

  .sticky-cta { display: none; }
}