/* ===== Reset & base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: "Georgia", "Iowan Old Style", serif; line-height: 1.2; margin: 0 0 0.5em; }
p { margin: 0 0 1em; }

:root {
  --color-bg: #12100e;
  --color-bg-alt: #1a1714;
  --color-surface: #201c19;
  --color-border: #34302b;
  --color-text: #f2ede6;
  --color-text-muted: #b9b0a6;
  --color-accent: #ff7a30;
  --color-accent-dark: #e0611c;
  --color-accent-contrast: #1a1000;
  --max-width: 1180px;
  --radius: 14px;
  --radius-sm: 8px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

section { padding: 64px 0; }
@media (min-width: 768px) { section { padding: 96px 0; } }

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.section-title { font-size: clamp(1.6rem, 4vw, 2.4rem); max-width: 40ch; }
.section-lead { color: var(--color-text-muted); max-width: 60ch; font-size: 1.05rem; }
.section-header { margin-bottom: 40px; }
.section-header.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-header.center .section-lead { margin-left: auto; margin-right: auto; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  box-shadow: 0 8px 24px -8px rgba(255, 122, 48, 0.6);
}
.btn--primary:hover { background: var(--color-accent-dark); }
.btn--outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn--outline:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn--block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 16px 0;
  background: transparent;
  transition: background 0.2s ease, box-shadow 0.2s ease, padding 0.2s ease;
}
.site-header.is-scrolled {
  background: rgba(18, 16, 14, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--color-border);
  padding: 10px 0;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav__brand {
  font-family: "Georgia", serif;
  font-size: 1.3rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.nav__brand span { color: var(--color-accent); }
.nav__links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav__links a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  transition: color 0.15s ease;
}
.nav__links a:hover { color: var(--color-text); }
.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 8px 10px;
  cursor: pointer;
}

/* ===== Language switcher ===== */
.lang-switcher {
  position: relative;
}
.lang-switcher summary {
  list-style: none;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 12px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.lang-switcher summary::-webkit-details-marker { display: none; }
.lang-switcher summary::after { content: " ▾"; }
.lang-switcher:hover summary,
.lang-switcher[open] summary { color: var(--color-text); border-color: var(--color-accent); }
.lang-switcher ul {
  list-style: none;
  margin: 8px 0 0;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-width: 150px;
}
.lang-switcher li a {
  display: block;
  padding: 7px 10px;
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  text-decoration: none;
}
.lang-switcher li a:hover { background: var(--color-bg-alt); color: var(--color-text); }
.lang-switcher li a[aria-current="true"] { color: var(--color-accent); font-weight: 700; }

@media (min-width: 768px) {
  .lang-switcher ul {
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 20;
    box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.5);
  }
}

@media (max-width: 767px) {
  .nav__toggle { display: inline-flex; }
  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 20px 20px;
    gap: 4px;
    display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links a { padding: 10px 0; border-bottom: 1px solid var(--color-border); }
  .nav__links .btn { margin-top: 10px; }
  .lang-switcher { order: 5; }
  .lang-switcher summary { display: inline-flex; width: fit-content; }
}

/* ===== Hero ===== */
.hero {
  padding-top: 40px;
  padding-bottom: 56px;
  overflow: hidden;
}
.hero__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; gap: 56px; }
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  margin-bottom: 18px;
}
.hero h1 em { color: var(--color-accent); font-style: normal; }
.hero__sub {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 48ch;
  margin-bottom: 30px;
}
.hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}
.hero__trust li { display: flex; align-items: center; gap: 8px; }
.hero__trust svg { flex-shrink: 0; color: var(--color-accent); }
.hero__media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; }

/* ===== Marquee / stat strip ===== */
.stat-strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 28px 0;
}
.stat-strip__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  text-align: center;
}
@media (min-width: 700px) { .stat-strip__grid { grid-template-columns: repeat(4, 1fr); } }
.stat-strip__item .num {
  display: block;
  font-family: "Georgia", serif;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  color: var(--color-accent);
}
.stat-strip__item .label { color: var(--color-text-muted); font-size: 0.85rem; }

/* ===== Two-column feature rows ===== */
.feature-row {
  display: grid;
  gap: 32px;
  align-items: center;
}
@media (min-width: 860px) {
  .feature-row { grid-template-columns: 1fr 1fr; gap: 56px; }
  .feature-row--reverse .feature-row__media { order: 2; }
}
.feature-row__media img,
.feature-row__media picture {
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.feature-row__media { border-radius: var(--radius); overflow: hidden; }
.feature-row + .feature-row { margin-top: 64px; }

/* ===== Problem/benefit compare cards ===== */
.compare-grid {
  display: grid;
  gap: 20px;
}
@media (min-width: 720px) { .compare-grid { grid-template-columns: 1fr 1fr; } }
.compare-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
}
.compare-card h3 { font-size: 1.15rem; margin-bottom: 16px; }
.compare-card ul { display: flex; flex-direction: column; gap: 12px; }
.compare-card li { display: flex; gap: 10px; align-items: flex-start; color: var(--color-text-muted); }
.compare-card--bad li svg { color: #ff5c5c; flex-shrink: 0; margin-top: 2px; }
.compare-card--good {
  background: linear-gradient(160deg, rgba(255,122,48,0.14), var(--color-surface) 60%);
  border-color: rgba(255,122,48,0.35);
}
.compare-card--good li svg { color: var(--color-accent); flex-shrink: 0; margin-top: 2px; }
.compare-card--good li { color: var(--color-text); }

/* ===== Mechanism steps ===== */
.steps {
  display: grid;
  gap: 20px;
}
@media (min-width: 720px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}
.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  font-weight: 700;
  margin-bottom: 14px;
}
.step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { color: var(--color-text-muted); font-size: 0.95rem; margin: 0; }

/* ===== USP icon grid ===== */
.usp-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 700px) { .usp-grid { grid-template-columns: repeat(3, 1fr); } }
.usp-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.usp-card__icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 122, 48, 0.14);
  color: var(--color-accent);
}
.usp-card h3 { font-size: 1rem; margin: 0; }
.usp-card p { font-size: 0.88rem; color: var(--color-text-muted); margin: 0; }

/* ===== Testimonials ===== */
.rating-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.rating-summary .stars { color: var(--color-accent); font-size: 1.3rem; letter-spacing: 2px; }
.rating-summary .rating-num { font-weight: 700; font-size: 1.1rem; }
.rating-summary .rating-count { color: var(--color-text-muted); font-size: 0.9rem; }

.testimonial-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) { .testimonial-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1020px) { .testimonial-grid { grid-template-columns: repeat(4, 1fr); } }
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.testimonial-card .stars { color: var(--color-accent); letter-spacing: 2px; }
.testimonial-card p { color: var(--color-text); font-size: 0.95rem; margin: 0; flex-grow: 1; }
.testimonial-card cite {
  font-style: normal;
  font-weight: 600;
  font-size: 0.9rem;
  display: block;
}
.testimonial-card .location { color: var(--color-text-muted); font-size: 0.82rem; }

/* ===== Sustainability ===== */
.sustain-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
@media (min-width: 860px) { .sustain-grid { grid-template-columns: 1fr 1fr; } }
.sustain-media { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.sustain-media img { border-radius: var(--radius); border: 1px solid var(--color-border); height: 100%; object-fit: cover; }

/* ===== Pricing / offer ===== */
.offer-card {
  background: linear-gradient(165deg, rgba(255,122,48,0.16), var(--color-surface) 55%);
  border: 1px solid rgba(255,122,48,0.35);
  border-radius: var(--radius);
  padding: 36px;
  display: grid;
  gap: 32px;
}
@media (min-width: 860px) { .offer-card { grid-template-columns: 1fr 1fr; align-items: center; } }
.offer-colors { display: flex; gap: 14px; margin: 18px 0 22px; }
.offer-colors figure { margin: 0; text-align: center; }
.offer-colors img {
  width: 68px;
  height: 68px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: #fff;
}
.offer-colors figcaption { font-size: 0.78rem; color: var(--color-text-muted); margin-top: 6px; }
.offer-price { display: flex; align-items: baseline; gap: 12px; margin-bottom: 4px; }
.offer-price .price-now { font-family: "Georgia", serif; font-size: 2.6rem; color: var(--color-accent); }
.offer-price .price-old { text-decoration: line-through; color: var(--color-text-muted); font-size: 1.2rem; }
.offer-save { display: inline-block; background: rgba(255,122,48,0.18); color: var(--color-accent); font-size: 0.8rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; margin-bottom: 18px; }
.offer-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 26px; color: var(--color-text-muted); font-size: 0.95rem; }
.offer-list li { display: flex; gap: 10px; align-items: flex-start; }
.offer-list svg { color: var(--color-accent); flex-shrink: 0; margin-top: 3px; }
.offer-media img { border-radius: var(--radius); border: 1px solid var(--color-border); }

/* ===== FAQ ===== */
.faq { max-width: 760px; margin: 0 auto; }
.faq__item {
  border-bottom: 1px solid var(--color-border);
}
.faq__question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.02rem;
  font-weight: 600;
  padding: 20px 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  font-family: inherit;
}
.faq__question .icon { transition: transform 0.2s ease; color: var(--color-accent); flex-shrink: 0; }
.faq__item.is-open .faq__question .icon { transform: rotate(45deg); }
.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}
.faq__item.is-open .faq__answer { max-height: 400px; }
.faq__answer p { padding: 0 4px 20px; margin: 0; }

/* ===== Final CTA ===== */
.final-cta {
  text-align: center;
  background: radial-gradient(circle at 50% 0%, rgba(255,122,48,0.18), transparent 60%);
  border-top: 1px solid var(--color-border);
}
.final-cta h2 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); max-width: 22ch; margin: 0 auto 16px; }
.final-cta p { color: var(--color-text-muted); max-width: 50ch; margin: 0 auto 30px; }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 56px 0 32px;
  background: var(--color-bg-alt);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.footer-grid {
  display: grid;
  gap: 32px;
  margin-bottom: 40px;
}
@media (min-width: 720px) { .footer-grid { grid-template-columns: 2fr 1fr; } }
.footer-brand { font-family: "Georgia", serif; font-size: 1.2rem; color: var(--color-text); margin-bottom: 10px; }
.footer-col h4 { color: var(--color-text); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { text-decoration: none; color: var(--color-text-muted); }
.footer-col a:hover { color: var(--color-accent); }
.footer-social { display: flex; gap: 14px; margin-top: 16px; }
.footer-social a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-muted);
}
.footer-social a:hover { color: var(--color-accent); border-color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.8rem;
}

/* ===== Legal texts (Impressum / Datenschutz) ===== */
.footer-col--legal {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.legal-block {
  border-bottom: 1px solid var(--color-border);
}
.legal-block summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 6px 0;
  list-style: none;
}
.legal-block summary::-webkit-details-marker { display: none; }
.legal-block summary::before {
  content: "+";
  display: inline-block;
  width: 1em;
  color: var(--color-accent);
  font-weight: 700;
}
.legal-block[open] summary::before { content: "–"; }
.legal-block summary:hover { color: var(--color-text); }
.legal-content {
  max-width: 70ch;
  padding: 4px 0 24px 1.4em;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.legal-content h4 {
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9rem;
  margin: 20px 0 8px;
}
.legal-content h4:first-child { margin-top: 0; }
.legal-content .legal-notice { color: var(--color-accent); font-size: 0.82rem; }
.legal-content p { margin: 0 0 12px; }
.legal-content address { font-style: normal; margin: 0 0 12px; }
.legal-content a { color: var(--color-accent); }
.legal-content ol { padding-left: 1.2em; display: flex; flex-direction: column; gap: 10px; margin: 0 0 12px; }

/* ===== Utilities ===== */
.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;
}
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--color-accent);
  color: var(--color-accent-contrast); padding: 10px 16px; z-index: 100; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }