/* ─── KOMPONENTEN ────────────────────────────────────────────────
   Ein Block pro Baustein, jeweils mit seinen eigenen Media Queries.
   Reihenfolge entspricht dem Seitenaufbau.

   Wiederverwendet wird vor allem:
   .btn        – alle Schaltflächen und Download-Links
   .item-list  – gerahmte Liste mit Haarlinien (Downloads, Firmware)
   .panel      – gerahmter Kasten (Vorbereitung, Kontakt)
   ──────────────────────────────────────────────────────────────── */

/* ─── SPRACHUMSCHALTER ───────────────────────────────────────── */
.lang-switch {
  display: flex;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.lang-switch button {
  background: transparent;
  border: none;
  border-right: 1px solid var(--c-border);
  color: var(--c-muted);
  font-family: var(--f-sans);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 9px;
  cursor: pointer;
}

.lang-switch button:last-child { border-right: none; }
.lang-switch button:hover { color: var(--c-text); }

.lang-switch button.active {
  background: var(--c-surface2);
  color: var(--c-heading);
}

/* ─── BUTTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  font-family: var(--f-sans);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #0f1418;
}

.btn-primary:hover {
  background: var(--c-accent-hi);
  border-color: var(--c-accent-hi);
  color: #0f1418;
}

.btn-secondary {
  background: transparent;
  border-color: var(--c-border-hi);
  color: var(--c-text);
}

.btn-secondary:hover {
  border-color: var(--c-muted);
  color: var(--c-heading);
}

/* Schlanke Variante in Listenzeilen */
.btn-quiet {
  background: var(--c-surface2);
  border-color: var(--c-border);
  color: var(--c-text);
  font-size: 12.5px;
  padding: 6px 11px;
}

.btn-quiet:hover {
  border-color: var(--c-border-hi);
  color: var(--c-heading);
}

.btn .ext { color: var(--c-faint); font-family: var(--f-mono); font-size: 11px; }
.btn-primary .ext { color: rgba(15,20,24,.55); }

/* ─── HERO ───────────────────────────────────────────────────── */
.hero {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--c-border);
  margin-bottom: 48px;
}

.hero .kicker {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--c-faint);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(27px, 4.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -.02em;
  max-width: 20ch;
}

.hero .lead {
  margin-top: 18px;
  font-size: 15.5px;
  color: var(--c-muted);
  max-width: 64ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

/* ─── HINWEISKASTEN ──────────────────────────────────────────── */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--r-md);
  font-size: 13px;
  line-height: 1.6;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  color: var(--c-muted);
}

.notice svg { margin-top: 2px; }

.notice-warn {
  background: var(--c-warn-soft);
  border-color: var(--c-warn-line);
  color: #d6bc8e;
}

.notice-warn svg { color: var(--c-warn); }

.notice-ok {
  background: var(--c-ok-soft);
  border-color: var(--c-ok-line);
  color: #a2c9b0;
}

.hero .notice { margin-top: 32px; max-width: 68ch; }

/* ─── PRODUKTKASTEN (Tuning-Chip) ────────────────────────────── */
.product {
  display: grid;
  grid-template-columns: 1fr 230px;
  gap: 24px;
  padding: 22px;
  border: 1px solid var(--c-accent-line);
  border-radius: var(--r-md);
  background: var(--c-accent-soft);
}

@media (max-width: 640px) {
  .product { grid-template-columns: 1fr; gap: 18px; }
}

.product h3 {
  font-size: 15px;
  margin-bottom: 10px;
}

.product p {
  font-size: 13.5px;
  color: var(--c-muted);
  line-height: 1.65;
}

.product p + p { margin-top: 10px; }

.product ul {
  list-style: none;
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.product li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.5;
}

.product li::before {
  content: '–';
  color: var(--c-accent);
  flex-shrink: 0;
}

.product-cta {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.product-cta .btn { justify-content: center; }

.product-note {
  font-size: 12px;
  color: var(--c-faint);
  line-height: 1.5;
}

/* ─── KAUFHINWEIS ZWISCHEN DEN ABSCHNITTEN ───────────────────── */
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 26px;
  padding: 16px 18px;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface);
}

.cta-band p {
  font-size: 13.5px;
  line-height: 1.55;
  max-width: 60ch;
}

.cta-band .btn { flex-shrink: 0; }

@media (max-width: 640px) {
  .cta-band { flex-direction: column; align-items: stretch; }
  .cta-band .btn { justify-content: center; }
}

/* ─── GERAHMTE LISTE (Downloads, Firmware) ───────────────────── */
.item-list {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface);
}

.item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--c-border);
}

.item:last-child { border-bottom: none; }

.item-text { min-width: 0; }

.item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-heading);
}

.item-sub {
  font-family: var(--f-mono);
  font-size: 11.5px;
  color: var(--c-faint);
  margin-top: 2px;
}

.item-desc {
  font-size: 13px;
  color: var(--c-muted);
  margin-top: 4px;
  max-width: 62ch;
}

@media (max-width: 640px) {
  .item { flex-direction: column; align-items: flex-start; gap: 12px; }
  .item .btn { width: 100%; justify-content: center; }
}

/* ─── PANEL (Vorbereitung, Kontakt) ──────────────────────────── */
.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 640px) {
  .panel-grid { grid-template-columns: 1fr; }
}

.panel {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface);
  padding: 20px;
}

.panel h3 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--c-muted);
  margin-bottom: 14px;
}

.panel ul, .panel ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.panel li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.55;
}

.panel ul li::before {
  content: '–';
  color: var(--c-faint);
  flex-shrink: 0;
}

.panel ol { counter-reset: step; }
.panel ol li { counter-increment: step; }

.panel ol li::before {
  content: counter(step) '.';
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-faint);
  flex-shrink: 0;
  min-width: 15px;
  margin-top: 1px;
}

.panel p {
  font-size: 13.5px;
  color: var(--c-muted);
  line-height: 1.65;
}

.panel p + p { margin-top: 10px; }

/* ─── ARBEITSSCHRITTE ────────────────────────────────────────── */
.steps {
  list-style: none;
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface);
}

.step {
  display: grid;
  grid-template-columns: 46px 1fr;
  border-bottom: 1px solid var(--c-border);
}

.step:last-child { border-bottom: none; }

.step-num {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-faint);
  padding: 15px 0 15px 18px;
}

.step-body {
  padding: 15px 18px 15px 0;
  font-size: 13.5px;
  line-height: 1.6;
}

/* ─── FEHLERBEHEBUNG (Accordion) ─────────────────────────────── */
.faq {
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  background: var(--c-surface);
}

.faq-item { border-bottom: 1px solid var(--c-border); }
.faq-item:last-child { border-bottom: none; }

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: transparent;
  border: none;
  color: var(--c-text);
  font-family: var(--f-sans);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.faq-trigger:hover { color: var(--c-heading); }

.faq-trigger .chevron {
  color: var(--c-faint);
  transition: transform .2s ease;
}

.faq-item.open .faq-trigger { color: var(--c-heading); }
.faq-item.open .chevron { transform: rotate(180deg); }

.faq-body { padding: 0 18px 16px; }

/* :not(.notice) – der Hinweiskasten bringt eigene Farben mit */
.faq-body p:not(.notice) {
  font-size: 13.5px;
  color: var(--c-muted);
  line-height: 1.65;
  max-width: 72ch;
}

.faq-body p:not(.notice) + ul { margin-top: 10px; }

.faq-body ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-body li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: var(--c-muted);
  line-height: 1.55;
}

.faq-body li::before {
  content: '–';
  color: var(--c-faint);
  flex-shrink: 0;
}

.faq-body .notice { margin-top: 14px; }

/* ─── KONTAKT ────────────────────────────────────────────────── */
.contact-line {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  margin-top: 12px;
}

.contact-line svg { color: var(--c-faint); }
.contact-line a { text-decoration: none; }
.contact-line a:hover { text-decoration: underline; }