/* ============================================================
   ReweRaffi – Haupt-Stylesheet
   Datei: css/style.css
   Gilt für: alle Seiten (index, unterseiten etc.)
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS-Variablen (Farben, Abstände, Fonts)
   ---------------------------------------------------------- */
:root {
  --teal-dark:    #0a3d4a;
  --teal:         #0e6b7c;
  --teal-light:   #1a9faf;
  --yellow:       #f5c518;
  --yellow-warm:  #f0a500;
  --green:        #2db87a;
  --bg-dark:      #040f12;
  --bg-card:      #0d2530;
  --text:         #e8f4f8;
  --text-muted:   #7aacb8;
  --glass:        rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.08);
  --radius-card:  20px;
  --radius-btn:   50px;
  --transition:   0.25s ease;
}

/* ----------------------------------------------------------
   2. Reset & Base
   ---------------------------------------------------------- */
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  overflow-x: hidden;
}
img { max-width:100%; display:block; }
a { text-decoration:none; }

/* ----------------------------------------------------------
   3. Utility-Klassen
   ---------------------------------------------------------- */
.text-muted  { color: var(--text-muted); }
.text-yellow { color: var(--yellow); }
.text-teal   { color: var(--teal-light); }
.container   { max-width:1200px; margin:0 auto; padding:0 24px; }

/* ----------------------------------------------------------
   4. Navigation
   ---------------------------------------------------------- */
nav {
  position: fixed; top:0; left:0; right:0; z-index:100;
  display: flex; align-items:center; justify-content:space-between;
  padding: 18px 48px;
  background: rgba(4,15,18,0.75);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}
.logo {
  font-size:1.4rem; font-weight:800; letter-spacing:-0.5px;
  background: linear-gradient(135deg, var(--yellow), var(--teal-light));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.nav-links { display:flex; gap:32px; list-style:none; }
.nav-links a { color:var(--text-muted); font-size:0.9rem; transition:color var(--transition); }
.nav-links a:hover { color:var(--yellow); }
.nav-cta {
  background:var(--yellow); color:var(--bg-dark);
  padding:10px 22px; border-radius:var(--radius-btn);
  font-weight:700; font-size:0.85rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.nav-cta:hover { transform:scale(1.05); box-shadow:0 0 20px rgba(245,197,24,0.4); }

/* Hamburger */
.hamburger {
  display:none; flex-direction:column; gap:5px;
  background:none; border:none; cursor:pointer; padding:4px;
}
.hamburger span {
  display:block; width:26px; height:2px;
  background:var(--text); border-radius:2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity:0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ----------------------------------------------------------
   5. Hero
   ---------------------------------------------------------- */
.hero {
  min-height:100vh;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:120px 24px 80px;
  position:relative; overflow:hidden;
}
.hero-bg {
  position:absolute; inset:0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(14,107,124,0.35) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(245,197,24,0.1) 0%, transparent 60%),
    radial-gradient(ellipse 30% 30% at 20% 80%, rgba(45,184,122,0.1) 0%, transparent 60%);
}
.hero-badge {
  display:inline-flex; align-items:center; gap:8px;
  background:rgba(245,197,24,0.1); border:1px solid rgba(245,197,24,0.3);
  color:var(--yellow); padding:8px 18px; border-radius:var(--radius-btn);
  font-size:0.8rem; font-weight:600; letter-spacing:1px;
  margin-bottom:32px; text-transform:uppercase;
  animation: fadeUp 0.6s ease both;
}
.hero h1 {
  font-size:clamp(2.8rem, 7vw, 6rem); font-weight:900;
  line-height:1.05; letter-spacing:-2px; margin-bottom:24px;
  animation: fadeUp 0.6s ease 0.1s both;
}
.hero h1 span {
  background:linear-gradient(135deg, var(--yellow), var(--teal-light));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.hero-sub {
  font-size:1.2rem; color:var(--text-muted); max-width:560px;
  line-height:1.7; margin-bottom:48px;
  animation: fadeUp 0.6s ease 0.2s both;
}
.hero-buttons {
  display:flex; gap:16px; flex-wrap:wrap; justify-content:center;
  animation: fadeUp 0.6s ease 0.3s both;
}
.scroll-hint {
  position:absolute; bottom:36px;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  color:var(--text-muted); font-size:0.75rem; letter-spacing:1px;
  animation: pulse 2s infinite;
}
.scroll-dot { width:6px; height:6px; background:var(--teal-light); border-radius:50%; }

/* ----------------------------------------------------------
   6. Buttons
   ---------------------------------------------------------- */
.btn-primary {
  background:linear-gradient(135deg, var(--yellow), var(--yellow-warm));
  color:var(--bg-dark); padding:16px 36px; border-radius:var(--radius-btn);
  font-weight:800; font-size:1rem;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow:0 4px 30px rgba(245,197,24,0.3);
}
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 40px rgba(245,197,24,0.5); }
.btn-ghost {
  border:1px solid var(--glass-border); color:var(--text);
  padding:16px 36px; border-radius:var(--radius-btn);
  font-weight:600; font-size:1rem;
  background:var(--glass); backdrop-filter:blur(10px);
  transition: border-color var(--transition), background var(--transition);
}
.btn-ghost:hover { border-color:var(--teal-light); background:rgba(14,107,124,0.15); }

/* ----------------------------------------------------------
   7. Stats Bar
   ---------------------------------------------------------- */
.stats {
  display:flex; justify-content:center; gap:64px; flex-wrap:wrap;
  padding:48px 24px;
  border-top:1px solid var(--glass-border); border-bottom:1px solid var(--glass-border);
  background:rgba(14,107,124,0.05);
}
.stat { text-align:center; display:flex; flex-direction:column; }
.stat-num-wrap {
  flex:1; display:flex; align-items:center; justify-content:center; min-height:72px;
}
.stat-num {
  font-size:2.4rem; font-weight:900; letter-spacing:-1px; line-height:1.1;
  background:linear-gradient(135deg, var(--yellow), var(--teal-light));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.stat-num-sm { font-size:1.6rem; }
.stat-label { color:var(--text-muted); font-size:0.85rem; margin-top:4px; }

/* ----------------------------------------------------------
   8. Sections & Shared
   ---------------------------------------------------------- */
section { padding:100px 24px; }
.section-label {
  color:var(--yellow); font-size:0.75rem; font-weight:700;
  letter-spacing:2px; text-transform:uppercase; margin-bottom:16px;
}
.section-title {
  font-size:clamp(2rem, 4vw, 3.2rem); font-weight:900;
  letter-spacing:-1px; line-height:1.1; margin-bottom:16px;
}
.section-sub { color:var(--text-muted); font-size:1.05rem; line-height:1.7; max-width:560px; }
.glow-line {
  height:1px; margin:0 auto;
  background:linear-gradient(90deg, transparent, var(--teal-light), var(--yellow), var(--teal-light), transparent);
  background-size:200%;
  animation:shimmer 3s infinite;
  max-width:600px; opacity:0.5;
}

/* ----------------------------------------------------------
   9. Feature Cards
   ---------------------------------------------------------- */
.features { display:grid; grid-template-columns:repeat(auto-fit, minmax(300px,1fr)); gap:20px; margin-top:64px; }
.card {
  background:var(--glass); border:1px solid var(--glass-border);
  border-radius:var(--radius-card); padding:36px;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  position:relative; overflow:hidden;
}
.card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--teal-light), transparent);
  opacity:0; transition:opacity var(--transition);
}
.card:hover { transform:translateY(-4px); border-color:rgba(26,159,175,0.3); box-shadow:0 20px 60px rgba(14,107,124,0.2); }
.card:hover::before { opacity:1; }
.card-icon {
  width:52px; height:52px; border-radius:14px; margin-bottom:20px;
  display:flex; align-items:center; justify-content:center; font-size:1.5rem;
  background:linear-gradient(135deg, rgba(14,107,124,0.4), rgba(26,159,175,0.2));
}
.card h3 { font-size:1.15rem; font-weight:700; margin-bottom:10px; }
.card p  { color:var(--text-muted); font-size:0.92rem; line-height:1.7; }
.card-tag {
  display:inline-block; margin-top:16px;
  background:rgba(245,197,24,0.1); color:var(--yellow);
  padding:4px 12px; border-radius:var(--radius-btn); font-size:0.75rem; font-weight:600;
}

/* ----------------------------------------------------------
   10. Rechner
   ---------------------------------------------------------- */
.calc-section {
  background:linear-gradient(135deg, rgba(14,107,124,0.15), rgba(45,184,122,0.05));
  border:1px solid var(--glass-border); border-radius:32px; padding:64px;
}
.calc-grid { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.check-list { margin-top:32px; display:flex; flex-direction:column; gap:12px; }
.check-item { display:flex; gap:12px; align-items:center; color:var(--text-muted); font-size:0.9rem; }
.check-dot { width:10px; height:10px; border-radius:50%; flex-shrink:0; }
.check-dot.green  { background:var(--green); }
.check-dot.yellow { background:var(--yellow); }
.calc-widget { background:var(--bg-card); border-radius:var(--radius-card); padding:36px; border:1px solid var(--glass-border); }
.calc-widget h3 { font-size:1.1rem; font-weight:700; margin-bottom:24px; }
.form-row { margin-bottom:20px; }
.form-row label { display:block; color:var(--text-muted); font-size:0.82rem; margin-bottom:8px; }
.form-row input {
  width:100%; padding:14px 16px; border-radius:12px;
  background:rgba(255,255,255,0.05); border:1px solid var(--glass-border);
  color:var(--text); font-size:0.95rem; transition:border-color var(--transition);
}
.form-row input:focus { outline:none; border-color:var(--teal-light); }
.calc-result {
  background:linear-gradient(135deg, rgba(245,197,24,0.15), rgba(245,165,0,0.05));
  border:1px solid rgba(245,197,24,0.3); border-radius:14px;
  padding:20px; text-align:center; margin-top:20px;
}
.result-num  { font-size:2.5rem; font-weight:900; color:var(--yellow); }
.result-eur  { font-size:1.5rem; font-weight:900; color:var(--green); margin-top:12px; }
.result-label { color:var(--text-muted); font-size:0.85rem; margin-top:4px; }
.calc-btn {
  width:100%; padding:14px; border-radius:12px; border:none;
  background:linear-gradient(135deg, var(--yellow), var(--yellow-warm));
  color:var(--bg-dark); font-weight:800; font-size:1rem; cursor:pointer;
  margin-top:16px; transition: transform var(--transition), box-shadow var(--transition);
}
.calc-btn:hover { transform:translateY(-2px); box-shadow:0 8px 30px rgba(245,197,24,0.4); }

/* ----------------------------------------------------------
   11. #functionmonday
   ---------------------------------------------------------- */
.fm-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(300px,1fr)); gap:20px; margin-top:48px; }
.fm-card {
  background:var(--glass); border:1px solid var(--glass-border);
  border-radius:var(--radius-card); overflow:hidden;
  transition: transform var(--transition), box-shadow var(--transition); cursor:pointer;
  color:var(--text); text-decoration:none; display:block;
}
.fm-card:hover { transform:translateY(-4px); box-shadow:0 20px 60px rgba(14,107,124,0.2); }
.fm-thumb {
  height:160px;
  background:linear-gradient(135deg, var(--teal-dark), var(--teal));
  display:flex; align-items:center; justify-content:center;
  font-size:3rem; position:relative; overflow:hidden;
}
.fm-thumb::after {
  content:''; position:absolute; inset:0;
  background:linear-gradient(135deg, rgba(245,197,24,0.1), transparent);
}
.fm-thumb-label {
  position:absolute; top:14px; left:14px; z-index:2;
  background:var(--yellow); color:var(--bg-dark);
  padding:4px 12px; border-radius:var(--radius-btn);
  font-size:0.7rem; font-weight:800; text-transform:uppercase;
}
.fm-body { padding:24px; }
.fm-body h4 { font-size:1rem; font-weight:700; margin-bottom:8px; line-height:1.4; }
.fm-body p  { color:var(--text-muted); font-size:0.85rem; line-height:1.6; }
.fm-arrow   { color:var(--teal-light); margin-top:16px; font-size:1.1rem; }

/* ----------------------------------------------------------
   12. KI-Sektion
   ---------------------------------------------------------- */
.ki-section {
  background:linear-gradient(135deg, rgba(45,184,122,0.08), rgba(14,107,124,0.15));
  border:1px solid var(--glass-border); border-radius:32px; padding:64px;
}
.ki-chips { display:flex; flex-wrap:wrap; gap:12px; margin:32px 0; }
.chip {
  background:var(--glass); border:1px solid var(--glass-border);
  padding:10px 20px; border-radius:var(--radius-btn); font-size:0.85rem;
  transition:var(--transition); cursor:pointer; color:var(--text);
}
.chip:hover { border-color:var(--teal-light); color:var(--teal-light); }
.chip.active { border-color:var(--yellow); color:var(--yellow); background:rgba(245,197,24,0.1); }
.ki-demo {
  background:var(--bg-card); border-radius:var(--radius-card); padding:28px;
  border:1px solid var(--glass-border); min-height:120px;
  font-size:0.95rem; line-height:1.7; color:var(--text-muted);
}
.thinking { display:flex; gap:6px; align-items:center; color:var(--teal-light); font-size:0.85rem; }
.thinking span { margin-left:8px; }
.dot { width:6px; height:6px; background:var(--teal-light); border-radius:50%; animation:bounce 1.2s infinite; }
.dot:nth-child(2) { animation-delay:.2s; }
.dot:nth-child(3) { animation-delay:.4s; }

/* ----------------------------------------------------------
   13. About
   ---------------------------------------------------------- */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; }
.about-visual {
  border-radius:24px; height:480px; position:relative; overflow:hidden;
  border:1px solid var(--glass-border);
  background:linear-gradient(135deg, var(--teal-dark) 0%, #0a2a35 40%, #061820 100%);
}
.about-visual::before {
  content:''; position:absolute; inset:0; z-index:1;
  background:
    radial-gradient(ellipse at 30% 60%, rgba(245,197,24,0.13), transparent 65%),
    radial-gradient(ellipse at 80% 20%, rgba(26,159,175,0.18), transparent 55%);
}
.about-visual img {
  position:absolute; bottom:0; left:50%; transform:translateX(-50%);
  height:95%; width:auto; object-fit:contain; object-position:bottom center;
  z-index:2;
}
.about-visual::after {
  content:''; position:absolute; inset:0; z-index:3;
  background:linear-gradient(to top, rgba(4,15,18,0.55) 0%, transparent 45%);
  pointer-events:none;
}
.about-visual-name { position:absolute; bottom:24px; left:24px; z-index:4; }
.about-visual-name h3 { font-size:1.3rem; font-weight:800; }
.about-visual-name span { color:var(--teal-light); font-size:0.85rem; }
.timeline { margin-top:32px; }
.tl-item { display:flex; gap:16px; margin-bottom:24px; }
.tl-dot {
  width:12px; height:12px; border-radius:50%; background:var(--teal-light);
  margin-top:6px; flex-shrink:0; position:relative;
}
.tl-dot::after {
  content:''; position:absolute; left:5px; top:12px; width:2px; height:calc(100% + 12px);
  background:var(--glass-border);
}
.tl-item:last-child .tl-dot::after { display:none; }
.tl-text h4 { font-size:0.95rem; font-weight:700; margin-bottom:4px; }
.tl-text p  { color:var(--text-muted); font-size:0.85rem; }

/* ----------------------------------------------------------
   14. Footer
   ---------------------------------------------------------- */
footer { padding:80px 24px 48px; border-top:1px solid var(--glass-border); text-align:center; }
.footer-logo {
  font-size:2rem; font-weight:900; letter-spacing:-1px;
  background:linear-gradient(135deg, var(--yellow), var(--teal-light));
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  margin-bottom:24px;
}
.footer-links { display:flex; gap:32px; justify-content:center; flex-wrap:wrap; margin-bottom:48px; }
.footer-links a { color:var(--text-muted); font-size:0.9rem; transition:color var(--transition); }
.footer-links a:hover { color:var(--yellow); }
.social-row { display:flex; gap:16px; justify-content:center; margin-bottom:48px; }
.social-btn {
  width:52px; height:52px; border-radius:14px;
  display:flex; align-items:center; justify-content:center; overflow:hidden;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}
.social-btn:hover { transform:translateY(-4px) scale(1.08); box-shadow:0 12px 32px rgba(0,0,0,0.4); filter:brightness(1.1); }
.social-btn img { width:52px; height:52px; object-fit:contain; }
.footer-copy { color:var(--text-muted); font-size:0.8rem; }

/* ----------------------------------------------------------
   15. Animationen
   ---------------------------------------------------------- */
@keyframes fadeUp  { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:translateY(0); } }
@keyframes pulse   { 0%,100%{opacity:.5} 50%{opacity:1} }
@keyframes bounce  { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-5px)} }
@keyframes shimmer { 0%{background-position:-200% center} 100%{background-position:200% center} }

/* ============================================================
   16. RESPONSIVE – Mobile First
   ============================================================ */

/* Tablet (max 900px) */
@media (max-width: 900px) {
  nav { padding:16px 24px; }
  .nav-links {
    display:none; flex-direction:column; gap:0;
    position:absolute; top:100%; left:0; right:0;
    background:rgba(4,15,18,0.97); backdrop-filter:blur(20px);
    border-bottom:1px solid var(--glass-border);
    padding:16px 0;
  }
  .nav-links.open { display:flex; }
  .nav-links li a { display:block; padding:14px 28px; font-size:1rem; }
  .desktop-only { display:none; }
  .hamburger { display:flex; }

  .calc-grid   { grid-template-columns:1fr; gap:40px; }
  .about-grid  { grid-template-columns:1fr; gap:40px; }
  .about-visual { height:360px; }
  .calc-section { padding:40px 28px; }
  .ki-section   { padding:40px 28px; }
}

/* Mobile (max 600px) */
@media (max-width: 600px) {
  nav { padding:14px 20px; }
  section { padding:64px 16px; }
  .hero { padding:100px 16px 64px; }
  .hero h1 { letter-spacing:-1px; }
  .hero-buttons { flex-direction:column; align-items:center; }
  .btn-primary, .btn-ghost { width:100%; max-width:320px; text-align:center; }

  .stats { gap:32px; padding:32px 16px; }
  .stat-num { font-size:2rem; }
  .stat-num-sm { font-size:1.3rem; }

  .features { grid-template-columns:1fr; }
  .fm-grid   { grid-template-columns:1fr; }

  .calc-section { padding:28px 16px; border-radius:20px; }
  .calc-widget  { padding:24px 16px; }
  .ki-section   { padding:28px 16px; border-radius:20px; }
  .ki-chips     { gap:8px; }
  .chip         { padding:8px 14px; font-size:0.8rem; }

  .about-visual { height:300px; }
  .section-title { letter-spacing:-0.5px; }

  .footer-links { gap:16px; }
  .footer-links a { font-size:0.82rem; }
  .social-btn, .social-btn img { width:44px; height:44px; }
}