/* Sigloch Ventures GmbH — Website Styles */
:root {
  --black: #1a1a1a;
  --ink: #222;
  --grey: #5c5c5c;
  --light-grey: #6b6b6b;
  --line: #e6e6e6;
  --bg: #ffffff;
  --bg-soft: #f6f6f6;
  --accent: #1a1a1a;
  --radius: 10px;
  --maxw: 960px;
}

* { box-sizing: border-box; }

/* Barrierefreiheit: Sprung-Link + sichtbarer Tastatur-Fokus */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--black);
  color: #fff;
  padding: 12px 18px;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 2px;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}
.brand img { height: 52px; width: auto; display: block; }
@media (max-width: 520px) { .brand img { height: 42px; } }
.nav a {
  margin-left: 28px;
  font-size: 15px;
  color: var(--grey);
  letter-spacing: 0.02em;
}
.nav a:hover { color: var(--black); text-decoration: none; }

/* Mobile-Navigation (Hamburger) */
.nav-toggle { display: none; }
@media (max-width: 640px) {
  .site-header .container { position: relative; }
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    margin-right: -8px;
    background: transparent;
    border: 0;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--black);
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.06);
    padding: 6px 0;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a {
    margin: 0;
    padding: 14px 24px;
    font-size: 16px;
    color: var(--ink);
  }
  .nav a:hover { background: var(--bg-soft); }
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--line);
}
.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 13px;
  color: var(--light-grey);
  margin: 0 0 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  color: var(--black);
  font-weight: 700;
}
.hero p.lead {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  color: var(--grey);
  max-width: 640px;
  margin: 0 0 36px;
}
.btn {
  display: inline-block;
  background: var(--black);
  color: #fff;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  letter-spacing: 0.02em;
  border: 1px solid var(--black);
  cursor: pointer;
  transition: opacity 0.15s ease;
}
.btn:hover { opacity: 0.85; text-decoration: none; color: #fff; }
.btn.ghost { background: transparent; color: var(--black); }
.btn.ghost:hover { background: var(--bg-soft); color: var(--black); }

/* Sections */
section { padding: 72px 0; }
section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  color: var(--black);
}
.section-soft { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.prose { max-width: 680px; color: var(--grey); }
.prose p { margin: 0 0 18px; }
.prose a { color: var(--black); border-bottom: 1px solid var(--line); }
.prose a:hover { text-decoration: none; border-color: var(--black); }

/* Focus areas grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  background: #fff;
}
.card h3 { margin: 0 0 10px; font-size: 1.15rem; color: var(--black); }
.card p { margin: 0; color: var(--grey); font-size: 15px; }

/* Contact form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 720px) { .contact-grid { grid-template-columns: 1fr; gap: 32px; } }

.form-row { margin-bottom: 18px; }
label { display: block; font-size: 14px; color: var(--ink); margin-bottom: 7px; font-weight: 600; }
input, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  transition: border-color 0.15s ease;
}
input:focus, textarea:focus { outline: none; border-color: var(--black); }
textarea { resize: vertical; min-height: 130px; }
.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  color: var(--grey);
  margin-bottom: 22px;
}
.check input { width: auto; margin-top: 3px; }
.check a { color: var(--black); text-decoration: underline; }

.contact-info p { margin: 0 0 14px; color: var(--grey); }
.contact-info strong { color: var(--ink); display: block; margin-bottom: 2px; }

.notice { padding: 14px 16px; border-radius: 8px; font-size: 15px; margin-bottom: 22px; }
.notice.ok { background: #eef7ee; border: 1px solid #cbe6cb; color: #256b25; }
.notice.err { background: #fdeeee; border: 1px solid #f0cccc; color: #a12525; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  color: var(--light-grey);
  font-size: 14px;
}
.site-footer .container { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.site-footer a { color: var(--grey); margin-left: 20px; }
.site-footer a:first-child { margin-left: 0; }
.footer-links { display: flex; flex-wrap: wrap; }

/* Legal pages */
.legal { padding-top: 64px; padding-bottom: 64px; }
.legal h1 { font-size: 2rem; margin: 0 0 32px; color: var(--black); }
.legal h2 { font-size: 1.2rem; margin: 34px 0 12px; color: var(--black); }
.legal p, .legal address {
  max-width: 680px; color: var(--grey); font-style: normal; margin: 0 0 14px;
}
.legal strong { color: var(--ink); }
.back-link { display: inline-block; margin-top: 40px; font-size: 15px; color: var(--grey); }