/* ========================================
   Transe Treffen – Modern Minimal Dark
   ======================================== */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0e0e10;
  --bg-secondary: #161618;
  --bg-card: #1c1c1f;
  --bg-card-hover: #222226;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --text-primary: #e8e8ec;
  --text-secondary: #9d9da6;
  --text-muted: #6b6b74;
  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;
  --max-width: 1120px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--text-primary);
}

ul {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.15rem;
  font-weight: 500;
}

p {
  color: var(--text-secondary);
  max-width: 680px;
}

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

.section {
  padding: 80px 0;
}

.section--alt {
  background-color: var(--bg-secondary);
}

/* --- Sticky Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 14, 16, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo span {
  color: var(--accent-light);
}

/* Nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  border-radius: 2px;
  transition: var(--transition);
}

.main-nav ul {
  display: flex;
  gap: 8px;
  align-items: center;
}

.main-nav a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 520px;
  padding: 100px 24px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(14, 14, 16, 0.4) 0%, rgba(14, 14, 16, 0.85) 100%);
  z-index: 1;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero h1 {
  margin-bottom: 32px;
}

/* --- CTA Button --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 36px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
  box-shadow: 0 0 40px rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent-light);
  border: 1px solid rgba(99, 102, 241, 0.4);
}

.btn-outline:hover {
  background: var(--accent-glow);
  color: var(--text-primary);
  border-color: var(--accent-light);
}

/* --- Content Sections --- */
.section-header {
  margin-bottom: 48px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.05rem;
}

/* Two-column layout */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.content-block h2 {
  margin-bottom: 20px;
}

.content-block p {
  margin-bottom: 16px;
}

.content-block p:last-child {
  margin-bottom: 0;
}

/* --- Feature / Benefit Lists --- */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: all var(--transition);
}

.feature-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent-light);
  font-size: 1.2rem;
}

.feature-item h3 {
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Styled List (bullet replacement) --- */
.styled-list {
  margin: 20px 0;
}

.styled-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.styled-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

/* --- Steps / How It Works --- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 36px;
  counter-reset: step-counter;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  counter-increment: step-counter;
  position: relative;
  transition: all var(--transition);
}

.step:hover {
  border-color: var(--border-hover);
}

.step::before {
  content: counter(step-counter);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent-light);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 16px;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.step h3 {
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Member Cards --- */
.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.member-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition);
}

.member-card:hover {
  border-color: var(--border-hover);
}

.member-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.member-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.member-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
}

.member-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Quote / Testimonial --- */
.testimonial {
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 32px;
  margin: 32px 0;
}

.testimonial blockquote {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: 1.05rem;
  line-height: 1.7;
}

.testimonial cite {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-style: normal;
}

/* --- FAQ Accordion (CSS-only) --- */
.faq {
  margin-top: 32px;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item:first-child {
  border-top: 1px solid var(--border-color);
}

.faq-toggle {
  display: none;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-primary);
  transition: color var(--transition);
  user-select: none;
}

.faq-question:hover {
  color: var(--accent-light);
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
  margin-left: 16px;
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform var(--transition);
}

.faq-icon::before {
  width: 14px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 2px;
  height: 14px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-toggle:checked + .faq-question .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-toggle:checked ~ .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding-bottom: 20px;
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- CTA Banner --- */
.cta-banner {
  text-align: center;
  padding: 72px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.cta-banner h2 {
  margin-bottom: 12px;
}

.cta-banner p {
  margin: 0 auto 28px;
  text-align: center;
}

/* --- Challenges / Solutions --- */
.challenges {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.challenge-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.challenge-item h3 {
  color: var(--text-primary);
  margin-bottom: 8px;
  font-size: 1rem;
}

.challenge-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Legal Pages --- */
.legal-content {
  padding: 60px 0 80px;
}

.legal-content h1 {
  margin-bottom: 40px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.legal-content h2 {
  font-size: 1.3rem;
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.legal-content p {
  margin-bottom: 14px;
  max-width: 100%;
}

.legal-content ul {
  margin: 12px 0 20px;
}

.legal-content li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.legal-content li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
}

.legal-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: start;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-brand .logo {
  margin-bottom: 8px;
  display: inline-block;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 500;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .grid-2 {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: 80px 24px 40px;
    transition: right 0.3s ease;
    z-index: 105;
    overflow-y: auto;
  }

  .main-nav.open {
    right: 0;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  .main-nav a {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .hero {
    min-height: 420px;
    padding: 80px 20px;
  }

  .section {
    padding: 56px 0;
  }

  .feature-list,
  .steps,
  .member-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .header-inner {
    height: 56px;
  }
}

/* Nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 104;
}

.nav-overlay.open {
  display: block;
}

/* --- Utility --- */
.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}