:root {
      --navy-deep:   #060f1e;
      --navy:        #0b1a2e;
      --navy-light:  #112240;
      --navy-card:   #0e1f38;
      --teal:        #0dbfb0;
      --teal-bright: #1de3d3;
      --teal-dim:    #0a8f85;
      --teal-glow:   rgba(13,191,176,0.15);
      --white:       #ffffff;
      --muted:       #8fa8c8;
      --muted-light: #c2d4e8;
      --border:      rgba(13,191,176,0.18);
      --border-soft: rgba(255,255,255,0.07);
    }

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

    html { scroll-behavior: smooth; }

    body {
      font-family: 'DM Sans', sans-serif;
      background: var(--navy-deep);
      color: var(--white);
      line-height: 1.7;
      overflow-x: hidden;
    }

    /* ── Grid noise overlay ── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image:
        radial-gradient(ellipse 80% 60% at 70% 10%, rgba(13,191,176,0.07) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 10% 80%, rgba(13,191,176,0.04) 0%, transparent 50%);
      pointer-events: none;
      z-index: 0;
    }

    /* ── Layout helpers ── */
    .container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; position: relative; z-index: 1; }
    section { position: relative; z-index: 1; }

    /* ── Nav ── */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      padding: 1.1rem 0;
      background: rgba(6,15,30,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-soft);
    }
    .nav-inner {
      max-width: 1100px; margin: 0 auto; padding: 0 2rem;
      display: flex; align-items: center; justify-content: space-between;
    }
    .nav-logo {
      display: flex; align-items: center; gap: 10px;
      text-decoration: none;
    }
    .nav-logo-icon {
      width: 32px; height: 32px; border-radius: 7px;
      background: var(--teal-dim);
      display: flex; align-items: center; justify-content: center;
    }
    .nav-logo-icon svg { width: 18px; height: 18px; }
    .nav-logo-text {
      font-size: 1.15rem; font-weight: 600; color: var(--white);
      letter-spacing: -0.02em;
    }
    .nav-cta {
      background: var(--teal);
      color: var(--navy-deep);
      padding: 0.5rem 1.25rem;
      border-radius: 6px;
      font-size: 0.875rem;
      font-weight: 600;
      text-decoration: none;
      transition: background 0.2s, transform 0.15s;
    }
    .nav-cta:hover { background: var(--teal-bright); transform: translateY(-1px); }

    /* ── Hero ── */
    .hero {
      min-height: 100vh;
      display: flex; flex-direction: column; justify-content: center;
      padding: 8rem 0 5rem;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: rgba(13,191,176,0.1);
      border: 1px solid var(--border);
      border-radius: 100px;
      padding: 0.35rem 1rem;
      font-size: 0.8rem; font-weight: 500; color: var(--teal);
      margin-bottom: 2rem;
      width: fit-content;
    }
    .hero-badge-dot {
      width: 7px; height: 7px; border-radius: 50%;
      background: var(--teal);
      animation: pulse 2s ease-in-out infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.85); }
    }
    .hero h1 {
      font-family: 'DM Serif Display', serif;
      font-size: clamp(2.4rem, 5vw, 3.8rem);
      line-height: 1.15;
      letter-spacing: -0.02em;
      color: var(--white);
      max-width: 700px;
      margin-bottom: 1.5rem;
    }
    .hero h1 span { color: var(--teal); }
    .hero p {
      font-size: 1.1rem; color: var(--muted-light);
      max-width: 540px; margin-bottom: 2.5rem;
      line-height: 1.75;
    }
    .hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }
    .btn-primary {
      background: var(--teal);
      color: var(--navy-deep);
      padding: 0.85rem 2rem;
      border-radius: 8px;
      font-size: 0.95rem; font-weight: 600;
      text-decoration: none;
      transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
      box-shadow: 0 0 24px rgba(13,191,176,0.25);
    }
    .btn-primary:hover {
      background: var(--teal-bright);
      transform: translateY(-2px);
      box-shadow: 0 0 36px rgba(13,191,176,0.4);
    }
    .btn-secondary {
      color: var(--muted-light);
      padding: 0.85rem 1.5rem;
      font-size: 0.95rem; font-weight: 500;
      text-decoration: none;
      border: 1px solid var(--border-soft);
      border-radius: 8px;
      transition: color 0.2s, border-color 0.2s;
    }
    .btn-secondary:hover { color: var(--white); border-color: var(--border); }

    /* ── Screenshot Mockup ── */
    .hero-mockup {
      margin-top: 4rem;
      position: relative;
    }
    .mockup-window {
      background: var(--navy-card);
      border: 1px solid var(--border-soft);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(13,191,176,0.08);
    }
    .mockup-titlebar {
      background: var(--navy-light);
      padding: 0.7rem 1rem;
      display: flex; align-items: center; gap: 8px;
      border-bottom: 1px solid var(--border-soft);
    }
    .mockup-dot {
      width: 10px; height: 10px; border-radius: 50%;
    }
    .mockup-dot:nth-child(1) { background: #ff5f57; }
    .mockup-dot:nth-child(2) { background: #ffbd2e; }
    .mockup-dot:nth-child(3) { background: #28c840; }
    .mockup-title {
      margin-left: 8px; font-size: 0.78rem; color: var(--muted);
      font-weight: 500;
    }
    .mockup-body {
      padding: 2rem;
      min-height: 320px;
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      gap: 1rem;
    }
    .mockup-placeholder {
      width: 100%; max-width: 600px;
      display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
    }
    /* Fake chart bars */
    .fake-chart {
      width: 100%; display: flex; align-items: flex-end;
      gap: 10px; height: 140px; padding: 0 1rem;
    }
    .fake-bar {
      flex: 1; border-radius: 4px 4px 0 0;
      background: linear-gradient(to top, var(--teal-dim), var(--teal));
      opacity: 0.85;
      animation: barrise 1s ease-out forwards;
      transform-origin: bottom;
    }
    @keyframes barrise {
      from { transform: scaleY(0); opacity: 0; }
      to   { transform: scaleY(1); opacity: 0.85; }
    }
    .fake-bar:nth-child(1) { height: 55%; animation-delay: 0.1s; }
    .fake-bar:nth-child(2) { height: 80%; animation-delay: 0.2s; }
    .fake-bar:nth-child(3) { height: 65%; animation-delay: 0.3s; }
    .fake-bar:nth-child(4) { height: 90%; animation-delay: 0.4s; }
    .fake-bar:nth-child(5) { height: 70%; animation-delay: 0.5s; }
    .fake-bar:nth-child(6) { height: 100%; animation-delay: 0.6s; background: linear-gradient(to top, var(--teal), var(--teal-bright)); }
    .fake-bar:nth-child(7) { height: 78%; animation-delay: 0.7s; }
    .mockup-caption {
      font-size: 0.8rem; color: var(--muted);
      font-style: italic;
    }
    .screenshot-note {
      text-align: center; font-size: 0.78rem; color: var(--muted);
      margin-top: 0.75rem;
    }



    .mockup-image {
      width: 100%;
      height: auto;
      border-radius: 10px;
      display: block;
      object-fit: cover;
}

    /* ── USP bar ── */
    .usp-bar {
      border-top: 1px solid var(--border-soft);
      border-bottom: 1px solid var(--border-soft);
      padding: 1.25rem 0;
      background: rgba(11,26,46,0.6);
    }
    .usp-inner {
      display: flex; justify-content: center;
      gap: 3rem; flex-wrap: wrap;
    }
    .usp-item {
      display: flex; align-items: center; gap: 0.6rem;
      font-size: 0.875rem; color: var(--muted-light); font-weight: 500;
    }
    .usp-icon { color: var(--teal); font-size: 1rem; }

    /* ── Section titles ── */
    .section-label {
      font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em;
      text-transform: uppercase; color: var(--teal);
      margin-bottom: 0.75rem;
    }
    .section-title {
      font-family: 'DM Serif Display', serif;
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      line-height: 1.2; letter-spacing: -0.02em;
      color: var(--white); margin-bottom: 1rem;
    }
    .section-sub {
      font-size: 1rem; color: var(--muted-light);
      max-width: 520px; line-height: 1.7;
    }

    /* ── How it works ── */
    .how { padding: 6rem 0; }
    .how-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 1.5rem; margin-top: 3.5rem;
    }
    .how-card {
      background: var(--navy-card);
      border: 1px solid var(--border-soft);
      border-radius: 12px;
      padding: 2rem 1.75rem;
      transition: border-color 0.2s, transform 0.2s;
    }
    .how-card:hover { border-color: var(--border); transform: translateY(-3px); }
    .how-num {
      font-size: 2rem; font-weight: 700;
      color: var(--teal); opacity: 0.4;
      font-family: 'DM Serif Display', serif;
      margin-bottom: 1rem;
    }
    .how-card h3 {
      font-size: 1.05rem; font-weight: 600;
      color: var(--white); margin-bottom: 0.5rem;
    }
    .how-card p { font-size: 0.9rem; color: var(--muted); line-height: 1.65; }

    /* ── Features ── */
    .features { padding: 6rem 0; }
    .features-grid {
      display: grid; grid-template-columns: repeat(2, 1fr);
      gap: 1rem; margin-top: 3.5rem;
    }
    .feature {
      display: flex; gap: 1.25rem;
      background: var(--navy-card);
      border: 1px solid var(--border-soft);
      border-radius: 12px;
      padding: 1.5rem;
      transition: border-color 0.2s;
    }
    .feature:hover { border-color: var(--border); }
    .feature-icon {
      width: 42px; height: 42px; flex-shrink: 0;
      border-radius: 9px;
      background: var(--teal-glow);
      border: 1px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      color: var(--teal); font-size: 1.1rem;
    }
    .feature-body h4 {
      font-size: 0.95rem; font-weight: 600; color: var(--white);
      margin-bottom: 0.35rem;
    }
    .feature-body p { font-size: 0.85rem; color: var(--muted); line-height: 1.6; }

    /* ── Privacy highlight ── */
    .privacy { padding: 5rem 0; }
    .privacy-box {
      background: linear-gradient(135deg, rgba(13,191,176,0.08) 0%, rgba(11,26,46,0.6) 100%);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 3rem;
      display: flex; gap: 3rem; align-items: center; flex-wrap: wrap;
    }
    .privacy-icon-wrap {
      width: 72px; height: 72px; flex-shrink: 0;
      border-radius: 16px;
      background: var(--teal-glow);
      border: 1px solid var(--border);
      display: flex; align-items: center; justify-content: center;
      font-size: 2rem;
    }
    .privacy-text h2 {
      font-family: 'DM Serif Display', serif;
      font-size: 1.6rem; color: var(--white);
      margin-bottom: 0.5rem;
    }
    .privacy-text p { font-size: 0.95rem; color: var(--muted-light); max-width: 560px; }

    /* ── Tester form ── */
    .tester { padding: 6rem 0; }
    .tester-box {
      background: var(--navy-card);
      border: 1px solid var(--border-soft);
      border-radius: 16px;
      padding: 3.5rem;
      text-align: center;
      max-width: 620px; margin: 0 auto;
    }
    .tester-box .section-label { justify-content: center; display: flex; }
    .tester-box .section-title { font-size: 1.9rem; }
    .tester-box p {
      font-size: 0.95rem; color: var(--muted-light);
      margin: 0.75rem auto 2rem; max-width: 440px; line-height: 1.7;
    }
    .tester-form { display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center; }
    .tester-input {
      flex: 1; min-width: 220px;
      background: var(--navy-light);
      border: 1px solid var(--border-soft);
      border-radius: 8px;
      padding: 0.85rem 1.1rem;
      color: var(--white);
      font-family: 'DM Sans', sans-serif;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }
    .tester-input::placeholder { color: var(--muted); }
    .tester-input:focus { border-color: var(--teal); }
    .tester-btn {
      background: var(--teal);
      color: var(--navy-deep);
      border: none; cursor: pointer;
      padding: 0.85rem 1.75rem;
      border-radius: 8px;
      font-family: 'DM Sans', sans-serif;
      font-size: 0.95rem; font-weight: 600;
      transition: background 0.2s, transform 0.15s;
      white-space: nowrap;
    }
    .tester-btn:hover { background: var(--teal-bright); transform: translateY(-1px); }
    .tester-note {
      font-size: 0.78rem; color: var(--muted);
      margin-top: 1rem;
    }
    .form-success {
      display: none;
      color: var(--teal); font-weight: 500; font-size: 0.95rem;
      margin-top: 1rem;
    }

    /* ── Footer ── */
    footer {
      border-top: 1px solid var(--border-soft);
      padding: 2.5rem 0;
      color: var(--muted);
      font-size: 0.82rem;
    }
    .footer-inner {
      max-width: 1100px; margin: 0 auto; padding: 0 2rem;
      display: flex; justify-content: space-between; align-items: flex-start;
      flex-wrap: wrap; gap: 2rem;
    }
    .footer-left p { line-height: 1.8; }
    .footer-left strong { color: var(--muted-light); }
    .footer-right { text-align: right; }
    .footer-right a { color: var(--muted); text-decoration: none; }
    .footer-right a:hover { color: var(--teal); }
    .footer-impressum { margin-top: 1rem; }
    .footer-impressum h4 {
      font-size: 0.82rem; font-weight: 600;
      color: var(--muted-light); margin-bottom: 0.4rem;
      text-transform: uppercase; letter-spacing: 0.08em;
    }

    /* ── Animations ── */
    .fade-up {
      opacity: 0; transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible { opacity: 1; transform: translateY(0); }

    /* ── Responsive ── */
    @media (max-width: 768px) {
      .how-grid { grid-template-columns: 1fr; }
      .features-grid { grid-template-columns: 1fr; }
      .privacy-box { flex-direction: column; gap: 1.5rem; padding: 2rem; }
      .tester-box { padding: 2rem 1.5rem; }
      .nav-cta { display: none; }
      .usp-inner { gap: 1.25rem; }
      .footer-inner { flex-direction: column; }
      .footer-right { text-align: left; }
    }
    #toTopBtn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;

  background: var(--teal);
  color: var(--navy-deep);

  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;

  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;

  display: none; /* erst versteckt */

  box-shadow: 0 0 20px rgba(13,191,176,0.4);
  transition: all 0.25s ease;
}

#toTopBtn:hover {
  background: var(--teal-bright);
  transform: translateY(-3px);
  box-shadow: 0 0 30px rgba(13,191,176,0.6);
}

/* ── Legal pages (Impressum / Datenschutz) ── */
.legal-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 7rem 2rem 4rem;
  position: relative;
  z-index: 1;
}

.legal-card {
  background: var(--navy-card);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}

.legal-toplink {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--teal);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.legal-toplink:hover {
  color: var(--teal-bright);
}

.legal-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.75rem;
}

.legal-page h1 {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--white);
}

.legal-page h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-top: 2rem;
  margin-bottom: 0.65rem;
}

.legal-page p,
.legal-page li {
  color: var(--muted-light);
  font-size: 0.98rem;
  line-height: 1.75;
}

.legal-page p {
  margin-bottom: 1rem;
}

.legal-page ul {
  margin: 0 0 1rem 1.25rem;
  padding: 0;
}

.legal-page a {
  color: var(--teal);
  text-decoration: none;
}

.legal-page a:hover {
  color: var(--teal-bright);
}

.legal-box {
  margin: 1.25rem 0 1.5rem;
  padding: 1rem 1.1rem;
  background: rgba(13,191,176,0.08);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.legal-footer {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-soft);
  font-size: 0.88rem;
  color: var(--muted);
}

@media (max-width: 768px) {
  .legal-page {
    padding: 5.5rem 1rem 3rem;
  }

  .legal-card {
    padding: 1.5rem;
    border-radius: 12px;
  }
}