/* ============================================================
   Endpointwerk – Stylesheet
   Dunkler Tech-Look, keine externen Abhängigkeiten (DSGVO-freundlich:
   keine Google Fonts, kein CDN – alles liegt auf deinem Webspace).
   ============================================================ */

:root {
  --bg: #0a0e14;
  --bg-alt: #0d1320;
  --card: rgba(255, 255, 255, 0.035);
  --card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --border-input: rgba(255, 255, 255, 0.38); /* >= 3:1 Kontrast (WCAG 1.4.11) */
  --text: #e6edf3;
  --muted: #9aa7b6;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --grad: linear-gradient(120deg, #38bdf8, #818cf8);
  --radius: 16px;
  --font: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Dezentes Grid im Hintergrund für den Tech-Look */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
}

main, .nav, .footer { position: relative; z-index: 1; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Skip-Link für Tastatur-Nutzer (WCAG 2.4.1) – nur bei Fokus sichtbar */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 100;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  background: var(--bg-alt);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--accent);
}

::selection { background: rgba(56, 189, 248, 0.35); }

/* ---------- Typografie ---------- */

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; }

h1 { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 750; margin-bottom: 16px; }
h3 { font-size: 1.25rem; font-weight: 650; margin-bottom: 10px; }

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 14px;
}

.section-intro {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.06rem;
  margin-bottom: 40px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 12px;
  font-weight: 650;
  font-size: 0.98rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  cursor: pointer;
  border: none;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn-primary {
  background: var(--grad);
  color: #071018;
  box-shadow: 0 6px 24px rgba(56, 189, 248, 0.28);
}
.btn-primary:hover { box-shadow: 0 10px 32px rgba(56, 189, 248, 0.4); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-block { display: block; width: 100%; }

/* ---------- Navigation ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.brand:hover { text-decoration: none; }

.brand-mark { width: 30px; height: 30px; flex-shrink: 0; }

.brand-name {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.brand-name em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav-links a {
  color: var(--muted);
  font-weight: 550;
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }

.btn-nav { padding: 9px 18px; color: #071018 !important; }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}
.nav-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 110px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -320px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 620px;
  background:
    radial-gradient(ellipse at center, rgba(56, 189, 248, 0.16) 0%, rgba(129, 140, 248, 0.08) 45%, transparent 70%);
  pointer-events: none;
}

.hero-inner { position: relative; }

.hero-sub {
  max-width: 680px;
  margin: 24px auto 34px;
  color: var(--muted);
  font-size: 1.12rem;
}
.hero-sub strong { color: var(--text); font-weight: 650; }

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-chips {
  list-style: none;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 42px;
}
.hero-chips li {
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.87rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
}

/* ---------- Stats ---------- */

.stats {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.015);
  padding: 42px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-num {
  display: block;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.92rem;
}

/* ---------- Sections ---------- */

.section { padding: 96px 0; }

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ---------- Cards ---------- */

.cards {
  display: grid;
  gap: 22px;
}
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-secondary { margin-top: 22px; }

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.35);
  background: var(--card-hover);
}

.card > p { color: var(--muted); font-size: 0.99rem; }

.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent);
  margin-bottom: 18px;
}
.card-icon svg { width: 24px; height: 24px; }
.card-icon-sm { width: 40px; height: 40px; }
.card-icon-sm svg { width: 21px; height: 21px; }

.card-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: var(--accent);
}

.checklist {
  list-style: none;
  margin-top: 16px;
  display: grid;
  gap: 9px;
}
.checklist li {
  position: relative;
  padding-left: 26px;
  color: var(--muted);
  font-size: 0.95rem;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 14px;
  height: 8px;
  border-left: 2.5px solid var(--accent);
  border-bottom: 2.5px solid var(--accent);
  transform: rotate(-45deg);
}

/* ---------- Über mich ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: center;
}

.about-visual { text-align: center; }

.monogram {
  width: 260px;
  height: 260px;
  margin: 0 auto;
  border-radius: 28px;
  background:
    linear-gradient(var(--bg-alt), var(--bg-alt)) padding-box,
    var(--grad) border-box;
  border: 2px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.monogram::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 25%, rgba(56, 189, 248, 0.18), transparent 60%);
}
.monogram span {
  font-size: 5.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

.portrait {
  width: 260px;
  height: 260px;
  object-fit: cover;
  border-radius: 28px;
  border: 2px solid rgba(56, 189, 248, 0.4);
}

.about-visual-caption {
  margin-top: 18px;
  font-weight: 700;
  line-height: 1.4;
}
.about-visual-caption span {
  font-weight: 500;
  color: var(--muted);
  font-size: 0.9rem;
}

.about-text p:not(.eyebrow) {
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 1.03rem;
}
.about-text strong { color: var(--text); }
.about-text .hero-cta { justify-content: flex-start; margin-top: 26px; }

/* ---------- Zertifizierungen ---------- */

.cert-card { display: flex; flex-direction: column; }

.cert-head {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 14px;
}
.cert-head h3 { font-size: 1.08rem; margin-bottom: 6px; }

.cert-seal {
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  background: rgba(129, 140, 248, 0.12);
  border: 1px solid rgba(129, 140, 248, 0.4);
  color: var(--accent-2);
}

.cert-meta {
  color: var(--muted);
  font-size: 0.86rem;
}

.cert-card > p { flex: 1; }

.cert-link {
  display: inline-block;
  margin-top: 18px;
  font-weight: 650;
  font-size: 0.95rem;
}

/* ---------- Partner ---------- */

.partner-card {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 52px;
}

.partner-text p:not(.eyebrow) {
  color: var(--muted);
  margin-bottom: 16px;
}
.partner-text strong { color: var(--text); }

.partner-steps {
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
}
.partner-steps li {
  counter-increment: step;
  position: relative;
  padding: 14px 18px 14px 60px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
}
.partner-steps li::before {
  content: counter(step);
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: #071018;
  background: var(--grad);
}
.partner-steps strong {
  display: block;
  font-size: 0.97rem;
}
.step-who {
  display: inline-block;
  margin-left: 8px;
  vertical-align: 2px;
  font-style: normal;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 2px 8px;
}
.step-who.me {
  color: var(--accent);
  border-color: rgba(56, 189, 248, 0.45);
  background: rgba(56, 189, 248, 0.08);
}
.partner-steps span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

/* ---------- Kontakt ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
}

.contact-info { display: grid; gap: 26px; }

.contact-item { display: grid; gap: 4px; }

.contact-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--muted);
}
.contact-item a { font-size: 1.08rem; font-weight: 600; }
.contact-item span:not(.contact-label) { color: var(--muted); }

.contact-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-field { display: grid; gap: 7px; }

.form-field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-input);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.98rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
}
.form-field textarea { resize: vertical; min-height: 130px; }

/* Honeypot: für Menschen unsichtbar */
.hp-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-privacy {
  font-size: 0.83rem;
  color: var(--muted);
}

.form-status {
  padding: 14px 16px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
}
.form-status.ok {
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.45);
  color: #6ee7b7;
}
.form-status.fehler {
  background: rgba(248, 113, 113, 0.12);
  border: 1px solid rgba(248, 113, 113, 0.45);
  color: #fca5a5;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--bg-alt);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-brand p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 6px;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-links a { color: var(--muted); font-size: 0.93rem; }
.footer-links a:hover { color: var(--text); }

.footer-copy {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}
.footer-copy p {
  color: rgba(154, 167, 182, 0.8); /* 0.65 fiel bei 12.8px unter WCAG-AA-Kontrast */
  font-size: 0.8rem;
}

/* ---------- Rechtsseiten (Impressum / Datenschutz) ---------- */

.legal {
  max-width: 780px;
  margin: 0 auto;
  padding: 72px 24px 96px;
}
.legal h1 { font-size: clamp(1.9rem, 5vw, 2.6rem); margin-bottom: 34px; }
.legal h2 {
  font-size: 1.25rem;
  margin: 40px 0 12px;
}
.legal h3 { font-size: 1.05rem; margin: 24px 0 8px; }
.legal p, .legal ul { color: var(--muted); margin-bottom: 14px; }
.legal ul { padding-left: 22px; }
.legal li { margin-bottom: 6px; }
.legal strong { color: var(--text); }
.legal .placeholder {
  background: rgba(248, 113, 113, 0.12);
  border: 1px dashed rgba(248, 113, 113, 0.5);
  border-radius: 6px;
  padding: 1px 8px;
  color: #fca5a5;
  font-weight: 600;
}
.legal-back {
  display: inline-block;
  margin-bottom: 28px;
  font-weight: 600;
}
.legal-stand {
  margin-top: 44px;
  font-size: 0.86rem;
  color: rgba(154, 167, 182, 0.7);
}

/* ---------- Scroll-Reveal-Animationen ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .about-text { text-align: left; }
  .partner-card { grid-template-columns: 1fr; padding: 36px 28px; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 16px; }
  .cards-3 { grid-template-columns: 1fr; }
}

/* Burger-Menü schon ab Tablet-Breite: Die volle Desktop-Nav braucht ~900px,
   zwischen 760px und 980px würden die Links sonst mehrzeilig umbrechen */
@media (max-width: 980px) {
  .nav-burger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    /* Solide Fläche statt Blur: verschachtelte backdrop-filter (Nav + Menü)
       rendern in manchen Browsern den Hintergrund nicht zuverlässig */
    background: #0a0e14;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    padding: 10px 24px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 1.02rem;
  }
  .nav-links a:last-child { border-bottom: none; }
  .btn-nav { margin-top: 12px; text-align: center; border-radius: 12px; }
}

@media (max-width: 760px) {
  .cards-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .section { padding: 68px 0; }
  .hero { padding: 76px 0 60px; }
}

@media (max-width: 420px) {
  .container { padding: 0 18px; }
  .monogram, .portrait { width: 210px; height: 210px; }
  .monogram span { font-size: 4.4rem; }
}