/* ===== Crypto / Space Modern – Variables ===== */
:root {
  --bg-void: #05070d;
  --bg-dark: #0a0e18;
  --bg-card: #0f1420;
  --bg-card-glass: rgba(15, 20, 32, 0.6);
  --bg-alt: #080b12;
  --text: #e8ecf4;
  --text-muted: #8b95a8;
  --accent: #00f0ff;
  --accent-violet: #a78bfa;
  --accent-cyan: #22d3ee;
  --accent-glow: rgba(0, 240, 255, 0.4);
  --violet-glow: rgba(167, 139, 250, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --border-glow: rgba(0, 240, 255, 0.2);
  --radius: 10px;
  --radius-lg: 16px;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-space: 'Orbitron', system-ui, sans-serif;
}

/* ===== Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-void);
  min-height: 100vh;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem;
  position: relative;
  z-index: 1;
}

/* ===== Space background – Hero ===== */
.space-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.starfield {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255,255,255,0.4), transparent),
    radial-gradient(2px 2px at 40% 70%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(255,255,255,0.5), transparent),
    radial-gradient(2px 2px at 80% 10%, rgba(255,255,255,0.25), transparent),
    radial-gradient(1px 1px at 90% 60%, rgba(255,255,255,0.35), transparent),
    radial-gradient(2px 2px at 15% 85%, rgba(255,255,255,0.3), transparent);
  background-size: 200% 200%, 180% 180%, 220% 220%, 190% 190%, 210% 210%, 195% 195%;
  animation: starfield 120s linear infinite;
  opacity: 0.8;
}

@keyframes starfield {
  0% { background-position: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%; }
  100% { background-position: 200% 200%, 180% 180%, 220% 220%, 190% 190%, 210% 210%, 195% 195%; }
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black, transparent 80%);
}

.nebula {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 100% 80% at 50% -30%, rgba(0, 240, 255, 0.12), transparent 50%),
    radial-gradient(ellipse 80% 60% at 80% 20%, rgba(167, 139, 250, 0.1), transparent 45%),
    radial-gradient(ellipse 70% 50% at 20% 60%, rgba(34, 211, 238, 0.06), transparent 40%);
  animation: nebula-pulse 15s ease-in-out infinite;
}

@keyframes nebula-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

/* ===== Section backgrounds ===== */
.section {
  position: relative;
  padding: 4rem 0;
  overflow: hidden;
}

.section-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.grid-subtle {
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
}

.nebula-subtle {
  background: radial-gradient(ellipse 100% 100% at 50% 50%, rgba(167, 139, 250, 0.04), transparent 60%);
}

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

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 7, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.site-header .container,
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  padding-left: max(1.25rem, env(safe-area-inset-left));
  padding-right: max(1.25rem, env(safe-area-inset-right));
}

.logo {
  font-family: var(--font-space);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
  text-transform: uppercase;
  padding: 0.25rem 0;
}

.logo-glow {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

/* Hamburger – nur auf kleinen Screens sichtbar */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text);
  border-radius: var(--radius);
  transition: background 0.2s;
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle:hover { background: rgba(255,255,255,0.06); }
.nav-toggle:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  margin: 0 auto;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s, text-shadow 0.2s;
  padding: 0.35rem 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav a:hover {
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 5rem 0 6rem;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  color: var(--text);
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subheadline {
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 1.25rem;
  max-width: 36em;
  text-shadow: 0 0 30px var(--accent-glow);
}

.hero-text {
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 42em;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #06b6d4);
  color: var(--bg-void);
  box-shadow:
    0 0 0 1px rgba(34, 211, 238, 0.3),
    0 0 30px var(--accent-glow),
    inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-primary:hover {
  box-shadow:
    0 0 0 1px rgba(34, 211, 238, 0.5),
    0 0 40px var(--accent-glow),
    0 0 60px rgba(34, 211, 238, 0.2),
    inset 0 1px 0 rgba(255,255,255,0.25);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}

/* ===== Section typography ===== */
.section-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  color: var(--text);
}

.section-headline::before {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-violet));
  border-radius: 2px;
  margin-bottom: 0.75rem;
  box-shadow: 0 0 12px var(--accent-glow);
}

.section-lead {
  font-size: 1.125rem;
  color: var(--text);
  margin: 0 0 1rem;
}

.section-text {
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}

.section-note {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin: 1rem 0 0;
}

.section-note.highlight {
  color: var(--accent);
  font-weight: 600;
  text-shadow: 0 0 20px var(--accent-glow);
}

/* ===== Beginner callout ===== */
.beginner-callout {
  margin-top: 1.75rem;
  padding: 1.25rem 1.5rem;
  background: rgba(34, 211, 238, 0.06);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
  box-shadow: 0 0 24px var(--violet-glow);
}

.beginner-callout p {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
  line-height: 1.6;
}

.beginner-callout strong {
  color: var(--accent);
}

/* ===== Support / Senioren callout ===== */
.support-callout {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: rgba(167, 139, 250, 0.06);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent-violet);
  box-shadow: 0 0 24px var(--violet-glow);
}

.support-callout p {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
  line-height: 1.6;
}

/* ===== Expertise grid – cards with glow ===== */
.expertise-grid {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.expertise-grid li {
  padding: 0.875rem 1rem;
  background: var(--bg-card-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  color: var(--text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.expertise-grid li:hover {
  border-color: var(--border-glow);
  box-shadow: 0 0 24px var(--violet-glow);
}

.expertise-grid li::before {
  content: '▸ ';
  color: var(--accent);
  font-weight: 700;
  text-shadow: 0 0 10px var(--accent-glow);
}

/* ===== Earn list ===== */
.earn-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.earn-list li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text);
}

.earn-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ===== Benefits list ===== */
.benefits-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.benefits-list li {
  padding: 0.875rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.benefits-list li:last-child {
  border-bottom: none;
}

.benefits-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.125rem;
  text-shadow: 0 0 10px var(--accent-glow);
}

/* ===== Form ===== */
.section-form {
  padding-bottom: 5rem;
}

.application-form {
  margin-top: 2rem;
  max-width: 480px;
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.375rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 16px; /* verhindert iOS-Zoom beim Fokus */
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
.form-row textarea {
  min-height: 120px;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-row textarea {
  resize: vertical;
  min-height: 100px;
}

.application-form .btn {
  margin-top: 0.5rem;
}

/* ===== Footer ===== */
.site-footer {
  position: relative;
  padding: 3rem 0;
  padding-bottom: max(3rem, env(safe-area-inset-bottom));
  padding-left: max(1.25rem, env(safe-area-inset-left));
  padding-right: max(1.25rem, env(safe-area-inset-right));
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}

.footer-brand {
  font-family: var(--font-space);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
  color: var(--text);
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.footer-smallprint {
  margin: 1.5rem 0 0;
  font-size: 0.6875rem;
  line-height: 1.5;
  color: var(--text-muted);
  opacity: 0.75;
  max-width: 32rem;
}

/* ===== Responsive – Tablet & Mobile ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(280px, 85vw);
    background: var(--bg-card);
    border-left: 1px solid var(--border);
    flex-direction: column;
    padding: 5rem 1.5rem 2rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 99;
    box-shadow: -8px 0 32px rgba(0,0,0,0.4);
  }

  .nav.nav-open {
    transform: translateX(0);
  }

  .nav a {
    padding: 1rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--border);
    min-height: 48px;
  }

  .nav a:last-child {
    border-bottom: none;
  }

  body.nav-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 98;
    -webkit-tap-highlight-color: transparent;
  }
}

@media (max-width: 640px) {
  .container {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  .header-inner {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  .hero {
    padding: 3rem 0 4rem;
  }

  .hero-headline {
    font-size: clamp(1.5rem, 6vw, 1.875rem);
  }

  .hero-subheadline {
    font-size: 1.0625rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .section-headline {
    font-size: 1.375rem;
  }

  .section-headline::before {
    width: 32px;
  }

  .expertise-grid {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .expertise-grid li {
    padding: 0.75rem 1rem;
  }

  .beginner-callout,
  .support-callout {
    padding: 1rem 1.25rem;
    margin-top: 1.25rem;
  }

  .beginner-callout p,
  .support-callout p {
    font-size: 0.9375rem;
  }

  .btn {
    padding: 0.875rem 1.25rem;
    width: 100%;
    max-width: 100%;
  }

  .application-form .btn {
    width: 100%;
  }

  .footer-smallprint {
    font-size: 0.625rem;
    margin-top: 1.25rem;
  }
}

@media (max-width: 380px) {
  .hero-headline {
    font-size: 1.375rem;
  }

  .logo {
    font-size: 1.0625rem;
  }
}

/* Reduzierte Animationen für Nutzer:innen mit Präferenz */
@media (prefers-reduced-motion: reduce) {
  .starfield {
    animation: none;
  }

  .nebula {
    animation: none;
  }

  .nav-toggle-bar,
  .nav,
  .btn {
    transition-duration: 0.01ms;
  }
}