/* MietStark marketing site — no external fonts/CDN (DSGVO-friendly). */
:root {
  --brand: #0d7377;
  --brand-strong: #095a5d;
  --brand-soft: #e3f2f1;
  --accent: #f2b233;
  --bg: #ffffff;
  --bg-alt: #f4f7f7;
  --surface: #ffffff;
  --text: #16292a;
  --muted: #4d6365;
  --border: #d7e3e3;
  --ok: #1d7a46;
  --ok-soft: #e4f4ea;
  --warn-soft: #fff5de;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 40, 41, .06), 0 6px 24px rgba(16, 40, 41, .06);
  --max: 1120px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --brand: #3fb6b0;
    --brand-strong: #6fd0ca;
    --brand-soft: #123335;
    --bg: #0e1415;
    --bg-alt: #131c1d;
    --surface: #172223;
    --text: #e6efef;
    --muted: #a3b6b7;
    --border: #28393a;
    --ok: #5cc98b;
    --ok-soft: #14301f;
    --warn-soft: #2e2715;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}
[dir="rtl"] body, body[dir="rtl"] { font-family: system-ui, "Segoe UI", Tahoma, "Noto Sans Arabic", sans-serif; }
img { max-width: 100%; height: auto; }
a { color: var(--brand); text-underline-offset: 2px; }
a:hover { color: var(--brand-strong); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.01em; }
h1 { font-size: clamp(1.9rem, 4.2vw, 3rem); margin: 0 0 .5em; }
h2 { font-size: clamp(1.45rem, 2.6vw, 2rem); margin: 0 0 .6em; }
h3 { font-size: 1.15rem; margin: 0 0 .4em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 780px; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
/* visually hidden until focused; no negative offset (RTL pages would scroll sideways) */
.skip { position: absolute; top: 8px; inset-inline-start: 16px; z-index: 99; background: var(--surface); padding: 8px 12px; clip-path: inset(50%); width: 1px; height: 1px; overflow: hidden; white-space: nowrap; }
.skip:focus { clip-path: none; width: auto; height: auto; overflow: visible; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.2rem; color: var(--text); text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.nav-links { display: flex; gap: 4px; margin-left: auto; align-items: center; flex-wrap: nowrap; white-space: nowrap; }
.nav-links a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px; font-size: .95rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { background: var(--brand-soft); color: var(--brand-strong); }
.nav-toggle { display: none; margin-left: auto; font: inherit; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; color: var(--text); font-size: 1rem; }
/* language switcher */
.lang-menu { position: relative; order: 3; }
.lang-menu summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: 8px; font-size: .9rem; font-weight: 600; color: var(--text); border: 1px solid var(--border); }
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu[open] summary { background: var(--brand-soft); color: var(--brand-strong); }
.lang-menu ul { position: absolute; inset-inline-end: 0; top: calc(100% + 6px); z-index: 60; min-width: 180px; margin: 0; padding: 6px; list-style: none; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); }
.lang-menu li a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--text); text-decoration: none; }
.lang-menu li a:hover, .lang-menu li a[aria-current] { background: var(--brand-soft); color: var(--brand-strong); }
.nav-links { order: 2; }
.nav-toggle { order: 4; }
@media (max-width: 1060px) {
  .lang-menu { margin-inline-start: auto; }
  .nav-toggle { display: block; margin-left: 0; }
  .nav-links { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; align-items: stretch; padding: 8px 16px 16px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; font-weight: 700; text-decoration: none;
  border: 2px solid var(--brand); background: var(--brand); color: #fff; line-height: 1.2;
}
.btn:hover { background: var(--brand-strong); border-color: var(--brand-strong); color: #fff; }
@media (prefers-color-scheme: dark) { .btn, .btn:hover { color: #06201f; } }
.btn.secondary { background: transparent; color: var(--brand); }
.btn.secondary:hover { background: var(--brand-soft); color: var(--brand-strong); }
.btn.small { padding: 8px 14px; font-size: .92rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Sections */
section { padding: 56px 0; }
section.alt { background: var(--bg-alt); }
.hero { padding: 56px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; align-items: center; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }
.eyebrow { color: var(--brand); font-weight: 700; font-size: .9rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 40em; }
.hero-card { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 22px; box-shadow: var(--shadow); }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 28px; }
@media (max-width: 700px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat b { display: block; font-size: 1.6rem; color: var(--brand); line-height: 1.1; }
.stat span { font-size: .9rem; color: var(--muted); }

.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 860px) { .grid.three { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .grid.two, .grid.three { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
a.card { display: block; color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; }
a.card:hover { border-color: var(--brand); transform: translateY(-2px); }
.card .meta { font-size: .88rem; color: var(--muted); }
.badge { display: inline-block; font-size: .78rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-strong); }
.badge.free { background: var(--ok-soft); color: var(--ok); }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding-top: 44px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; top: 16px; left: 20px; width: 28px; height: 28px; border-radius: 8px; background: var(--brand); color: #fff; font-weight: 800; display: grid; place-items: center; font-size: .95rem; }
[dir="rtl"] .step::before { left: auto; right: 20px; }

.notice { background: var(--warn-soft); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; font-size: .95rem; }
.check-list { list-style: none; padding: 0; margin: 0 0 1em; }
.check-list li { padding-left: 28px; position: relative; margin: 6px 0; }
.check-list li::before { content: "✓"; position: absolute; left: 4px; color: var(--ok); font-weight: 800; }
[dir="rtl"] .check-list li { padding-left: 0; padding-right: 28px; }
[dir="rtl"] .check-list li::before { left: auto; right: 4px; }

/* Article */
.article { padding: 40px 0 56px; }
.article h2 { margin-top: 1.8em; scroll-margin-top: 80px; }
.article h3 { margin-top: 1.4em; }
.article ul, .article ol { padding-left: 1.3em; }
[dir="rtl"] .article ul, [dir="rtl"] .article ol { padding-left: 0; padding-right: 1.3em; }
.article li { margin: .3em 0; }
.toc { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; margin: 20px 0 8px; }
.toc ol { margin: 0; }
.breadcrumb { font-size: .9rem; color: var(--muted); margin-bottom: 14px; }
.breadcrumb a { color: var(--muted); }
table { border-collapse: collapse; width: 100%; margin: 1em 0 1.4em; font-size: .96rem; }
th, td { border: 1px solid var(--border); padding: 9px 12px; text-align: left; vertical-align: top; }
[dir="rtl"] th, [dir="rtl"] td { text-align: right; }
th { background: var(--bg-alt); }
.table-scroll { overflow-x: auto; }
/* legal pages are rendered from Markdown without a wrapper */
.legal table { display: block; overflow-x: auto; }
code { background: var(--bg-alt); padding: 1px 5px; border-radius: 5px; font-size: .92em; }
.formula { background: var(--bg-alt); border-left: 4px solid var(--brand); padding: 12px 16px; border-radius: 8px; margin: 1em 0; font-weight: 600; }

/* Question cards */
.q { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; margin: 0 0 14px; }
.q-head { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.q-text { font-weight: 650; margin-bottom: 10px; }
.q ol.opts { list-style: upper-alpha; padding-left: 1.4em; margin: 0 0 10px; }
.q ol.opts li { margin: 4px 0; }
.q details { border-top: 1px dashed var(--border); padding-top: 10px; }
.q summary { cursor: pointer; color: var(--brand); font-weight: 700; }
.q .answer { margin-top: 10px; background: var(--ok-soft); border-radius: 10px; padding: 10px 14px; }
.q .answer b { color: var(--ok); }

/* Calculator */
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
@media (max-width: 620px) { .calc { grid-template-columns: 1fr; } }
.calc label { display: flex; flex-direction: column; gap: 4px; font-size: .92rem; color: var(--muted); }
.calc input { font: inherit; color: var(--text); background: var(--bg); padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
.calc-out { margin-top: 16px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 620px) { .calc-out { grid-template-columns: 1fr; } }

/* FAQ */
.faq details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq details[open] summary { margin-bottom: 8px; }

/* CTA band */
.cta-band { background: var(--brand); color: #fff; border-radius: 20px; padding: 32px; display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.cta-band h2 { margin: 0 0 6px; color: #fff; }
.cta-band p { margin: 0; opacity: .92; }
.cta-band .btn { background: #fff; color: var(--brand-strong); border-color: #fff; }
@media (prefers-color-scheme: dark) { .cta-band { background: var(--brand-soft); color: var(--text); } .cta-band h2 { color: var(--text); } .cta-band .btn { background: var(--brand); color: #06201f; border-color: var(--brand); } }

.lang-grid a { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.lang-grid .native { font-weight: 700; font-size: 1.1rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); padding: 36px 0 28px; margin-top: 40px; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 24px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.site-footer h4 { margin: 0 0 8px; font-size: .95rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 5px 0; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--brand); text-decoration: underline; }
.disclaimer { margin-top: 24px; color: var(--muted); font-size: .85rem; }

/* Icons, feature list and app screenshots (home) */
.ic-box { display: inline-grid; place-items: center; width: 44px; height: 44px; flex: 0 0 44px; border-radius: 12px; background: var(--brand-soft); color: var(--brand-strong); }
.grid .card .ic-box { margin-bottom: 12px; }
.showcase { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.feature-list { list-style: none; margin: 8px 0 24px; padding: 0; display: grid; gap: 18px; }
.feature-list li { display: flex; gap: 16px; align-items: flex-start; }
.feature-list h3 { margin: 2px 0 4px; }
.feature-list p { margin: 0; }
.phones { display: flex; gap: 18px; justify-content: center; align-items: flex-start; }
.phone { margin: 0; width: min(240px, 46%); text-align: center; }
.phone:nth-child(2) { margin-top: 48px; }
.phone img { display: block; width: 100%; height: auto; border-radius: 28px; border: 6px solid #1f2b2c; background: #0f1718; box-shadow: 0 18px 50px rgba(0, 0, 0, .28); }
.phone figcaption { margin-top: 10px; font-size: .88rem; color: var(--muted); }
@media (max-width: 860px) {
  .showcase { grid-template-columns: 1fr; gap: 28px; }
  .phone:nth-child(2) { margin-top: 28px; }
}

/* Language pages: topics and bilingual sample questions */
.topic-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.topic-list li { display: flex; align-items: center; gap: 12px; }
.topic-list .ic-box { width: 38px; height: 38px; flex-basis: 38px; }
@media (max-width: 620px) { .topic-list { grid-template-columns: 1fr; } }
.sample-bi .de { padding-bottom: 12px; border-bottom: 1px dashed var(--border); margin-bottom: 12px; }
.sample-bi .de .q-text { font-weight: 600; }
.sample-bi .tr .q-text { color: var(--brand-strong); }
.sample-bi .tr .opts { color: var(--muted); }
[dir="rtl"] .opts { padding-left: 0; padding-right: 1.4em; }

/* keep short German terms in RTL text on one line */
[dir="rtl"] bdi { white-space: nowrap; }