/* ============================================
   webinar.olafdunkel.com – Plattform-Stylesheet
   CD-konform mit olafdunkel.com
   ============================================ */

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

:root {
  --black: #0a0a0a;
  --dark: #1a1a1a;
  --gray-900: #222;
  --gray-700: #555;
  --gray-500: #888;
  --gray-300: #ccc;
  --gray-100: #f2f2f2;
  --gray-50: #fafafa;
  --white: #fff;
  --accent: #C8102E;
  --accent-soft: #fbeaec;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Source Serif 4', 'Georgia', serif;
  --max-width: 1200px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  color: var(--dark);
  background: var(--white);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: inherit; text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: 0.7; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--black);
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.05rem; }
p { font-size: 1.05rem; color: var(--gray-700); margin-bottom: 1.2rem; }

/* --- Header --- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
}
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 2rem; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.site-logo { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.03em; color: var(--black); text-transform: uppercase; }
.site-logo span { font-weight: 300; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: 0.875rem; font-weight: 500; letter-spacing: 0.02em;
  text-transform: uppercase; color: var(--gray-700); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1.5px; background: var(--black); transition: width var(--transition);
}
.nav-links a:hover, .nav-links a.active { opacity: 1; color: var(--black); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.nav-cta {
  padding: 0.5rem 1rem; background: var(--black); color: var(--white); text-transform: uppercase;
}
.nav-links a.nav-cta::after { display: none; }
.nav-links a.nav-cta:hover { background: var(--gray-900); opacity: 1; }

.nav-links a.nav-cta-secondary {
  padding: 0.45rem 1rem;
  border: 1px solid var(--black);
  color: var(--black);
  text-transform: uppercase;
  margin-left: auto;   /* schiebt Anmelden + Registrieren ans rechte Ende */
}
.nav-links a.nav-cta-secondary::after { display: none; }
.nav-links a.nav-cta-secondary:hover {
  background: var(--black);
  color: var(--white);
  opacity: 1;
}
.nav-links a.nav-cta-secondary + a.nav-cta { margin-left: 0.5rem; }

/* Bei vielen Nav-Items kompakter, damit alles auf Desktop passt */
@media (max-width: 1180px) {
  .nav-links { gap: 1.1rem; }
  .nav-links a { font-size: 0.8rem; }
  .nav-links a.nav-cta,
  .nav-links a.nav-cta-secondary { padding: 0.4rem 0.8rem; }
}

/* --- Burger-Button (Mobile) --- */
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 0.6rem;
  margin: -0.6rem;
  cursor: pointer;
  color: var(--black);
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle:focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 2px;
}
.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 26px;
  height: 22px;
}
.nav-toggle-icon span {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.22s ease, opacity 0.18s ease;
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Skip-Link (Accessibility) --- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  background: var(--black);
  color: var(--white);
  padding: 0.6rem 1rem;
  z-index: 200;
}
.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  outline: 2px solid var(--accent);
}

/* --- Auth-Bar (nur Startseite, ganz oben rechts am Browserrand) --- */
.auth-bar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
}
.auth-bar .btn-primary,
.auth-bar .btn-secondary {
  padding: 0.55rem 1.1rem;
  font-size: 0.78rem;
}
@media (max-width: 600px) {
  .auth-bar { padding: 0.85rem 1rem; }
}

main { flex: 1; }

/* --- Hero (identisch zu olafdunkel.com) --- */
.hero {
  padding: 6rem 0 4rem;
  text-align: center;
}
.hero h1 { margin-bottom: 1.5rem; }
.hero .subtitle {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* --- Section Header --- */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-100);
}
.section-header h2 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-500);
}

/* --- Featured Webinar (sichtbarer Karten-Stil wie olafdunkel.com) --- */
.featured-webinar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding: 2.5rem;
  border: 2px solid var(--gray-300);
  background: var(--white);
  margin-bottom: 4rem;
  transition: all 0.2s ease;
}
.featured-webinar:hover { border-color: var(--black); }
.featured-webinar .featured-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
  display: block;
}
.featured-webinar h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 0.75rem;
}
.featured-webinar .lead {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--gray-700);
  max-width: 720px;
  margin-bottom: 1.5rem;
}
.featured-webinar .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.featured-webinar .meta span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
}

/* --- Webinar Cluster --- */
.cluster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}
.webinar-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  border: 2px solid var(--gray-300);
  background: var(--white);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}
.webinar-card:hover {
  opacity: 1;
  border-color: var(--black);
}
.webinar-card .cluster-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-500);
  margin-bottom: 0.5rem;
}
.webinar-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.webinar-card .card-subtitle {
  font-style: italic;
  color: var(--gray-700);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}
.webinar-card p {
  font-size: 0.95rem;
  color: var(--gray-700);
  margin-bottom: 1rem;
}
.webinar-card .card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-100);
}

/* --- Buttons (2px Border, Hover-Invertierung wie olafdunkel.com) --- */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid var(--black);
  transition: all 0.2s ease;
}
.btn-primary {
  background: var(--black);
  color: var(--white);
}
.btn-primary:hover {
  background: transparent;
  color: var(--black);
  opacity: 1;
}
.btn-secondary {
  background: transparent;
  color: var(--black);
}
.btn-secondary:hover {
  background: var(--black);
  color: var(--white);
  opacity: 1;
}

/* --- Forms --- */
.form-card {
  max-width: 640px;
  margin: 4rem auto;
  padding: 2.5rem;
  border: 2px solid var(--gray-300);
  background: var(--white);
}
.form-card h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 0.5rem;
}
.form-card .form-intro {
  color: var(--gray-700);
  margin-bottom: 2rem;
  line-height: 1.6;
}
.form-row { margin-bottom: 1.25rem; }
.form-row.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-700);
  margin-bottom: 0.4rem;
}
.form-row label .required { color: var(--accent); }
.form-row label .optional {
  font-weight: 400;
  text-transform: none;
  color: var(--gray-500);
  letter-spacing: 0;
  margin-left: 0.4rem;
}
.form-row input[type="text"],
.form-row input[type="email"],
.form-row input[type="tel"],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  background: var(--white);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--black);
}
.form-row textarea { resize: vertical; min-height: 80px; }

.form-row.honey { position: absolute; left: -9999px; height: 0; overflow: hidden; }

.form-consent {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin: 1.5rem 0;
  padding: 1rem;
  background: var(--gray-50);
  border-left: 3px solid var(--gray-300);
  font-size: 0.9rem;
  color: var(--gray-700);
}
.form-consent input[type="checkbox"] {
  margin-top: 0.2rem;
  flex-shrink: 0;
  accent-color: var(--black);
  width: 18px;
  height: 18px;
}
.form-consent a { color: var(--black); text-decoration: underline; text-underline-offset: 3px; }

.form-error {
  padding: 1rem;
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--gray-900);
  font-size: 0.95rem;
}
.form-success {
  padding: 1rem;
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--black);
  background: var(--gray-50);
  font-size: 0.95rem;
}

/* --- Footer (CD-konform mit olafdunkel.com) --- */
.site-footer {
  margin-top: 4rem;
  background: var(--black);
  color: var(--gray-500);
  padding: 4rem 0 2rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand .site-logo { color: var(--white); margin-bottom: 1rem; display: inline-block; }
.footer-brand p { font-size: 0.9rem; color: var(--gray-500); line-height: 1.6; }
.footer-linkedin {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--gray-500);
  transition: color 0.3s ease;
}
.footer-linkedin:hover { color: var(--white); opacity: 1; }
.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-bottom: 0.75rem;
}
.footer-col a:hover { color: var(--white); opacity: 1; }
.footer-bottom {
  border-top: 1px solid var(--gray-900);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
}
.footer-social { display: flex; gap: 1rem; }
.footer-social a { color: var(--gray-500); font-size: 0.85rem; }

/* --- Notice (Login required, etc.) --- */
.notice-banner {
  background: var(--gray-50);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin: 2rem auto;
  max-width: var(--max-width);
  font-size: 0.95rem;
  color: var(--gray-900);
}

/* --- Member-Bar (oben im geschützten Bereich) --- */
.member-bar {
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-100);
  padding: 0.75rem 0;
  font-size: 0.85rem;
  color: var(--gray-700);
}
.member-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.member-bar a { color: var(--gray-900); text-decoration: underline; text-underline-offset: 3px; }

/* --- Responsive --- */
@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }

  /* Mobile-Nav: Fullscreen-Overlay, vertikal & horizontal zentriert (CD olafdunkel.com) */
  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(100vh - 72px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    padding: 2rem 1.25rem;
    background: var(--gray-100);
    overflow-y: auto;
    z-index: 99;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a {
    width: auto;
    padding: 0;
    border: none;
    font-size: 1.2rem;
    text-transform: uppercase;
    color: var(--gray-900);
    text-align: center;
  }
  .nav-links a::after { display: none; }
  .nav-links a.nav-cta,
  .nav-links a.nav-cta-secondary {
    margin: 0;
    padding: 0.85rem 1.6rem;
    width: auto;
  }
  .nav-links a.nav-cta-secondary + a.nav-cta { margin-left: 0; }

  /* Body-Lock wenn Mobile-Menü offen */
  body.nav-open { overflow: hidden; }

  .featured-webinar { padding: 1.5rem; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .form-row.two-col { grid-template-columns: 1fr; }
  .form-card { margin: 2rem 1rem; padding: 1.5rem; }
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

@media (max-width: 600px) {
  .container { padding: 0 1rem; }
  .nav-inner { height: 64px; }
  .nav-links { top: 64px; height: calc(100vh - 64px); gap: 2rem; }
  .nav-links a { font-size: 1.1rem; }
  .hero { padding: 3rem 0 2rem; }

  /* Touch-friendlier Buttons auf kleinen Screens */
  .btn-primary, .btn-secondary { padding: 0.95rem 1.4rem; font-size: 0.85rem; min-height: 44px; }

  /* Member-Bar bleibt lesbar */
  .member-bar .container { font-size: 0.8rem; gap: 0.5rem; }

  /* Featured-Card kompakter */
  .featured-webinar { padding: 1.25rem; margin-bottom: 2.5rem; }
  .cluster-grid { gap: 1rem; }
  .webinar-card { padding: 1.25rem; }
}

/* iOS Safari: Notch-Padding für eingehängte App */
@supports (padding: max(0px)) {
  .site-header .nav-inner { padding-left: max(2rem, env(safe-area-inset-left));
                            padding-right: max(2rem, env(safe-area-inset-right)); }
  .auth-bar { padding-left: max(2rem, env(safe-area-inset-left));
              padding-right: max(2rem, env(safe-area-inset-right)); }
  @media (max-width: 600px) {
    .site-header .nav-inner { padding-left: max(1rem, env(safe-area-inset-left));
                              padding-right: max(1rem, env(safe-area-inset-right)); }
  }
}

/* Print */
@media print {
  .site-header, .site-footer, .nav-links { display: none; }
}