/* ============================================================
   mobile.css – Lernzentrum – Responsive & Mobile Nav
============================================================ */

body {
  overflow-x: hidden;
  max-width: 100vw;
}

/* ══ Hamburger Animationen (außerhalb @media!) ══ */
@keyframes navSlideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes navItemIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Hamburger Button – standardmäßig versteckt */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 5px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.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); }

/* ══ Tablet – max 900px ══ */
@media (max-width: 900px) {

  section       { padding: 60px 24px; }
  nav           { padding: 10px 20px; }
  .nav-logo img { height: 40px; }

  .nav-links    { display: none !important; }
  .hamburger    { display: flex !important; }
  .nav-cta      { display: none !important; }

  /* Menü offen */
  .nav-links.mobile-open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height, 62px);
    left: 0; right: 0;
    background: #1e4a4a;
    padding: 10px 16px 20px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.25);
    z-index: 199;
    gap: 4px;
    animation: navSlideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .nav-links.mobile-open a {
    color: #ffffff;
    font-size: 16px;
    font-weight: 500;
    padding: 13px 16px;
    border-radius: 8px;
    display: block;
    width: 100%;
    animation: navItemIn 0.22s ease both;
  }
  .nav-links.mobile-open a:nth-child(1) { animation-delay: 0.06s; }
  .nav-links.mobile-open a:nth-child(2) { animation-delay: 0.13s; }
  .nav-links.mobile-open a:nth-child(3) { animation-delay: 0.20s; }
  .nav-links.mobile-open a:nth-child(4) { animation-delay: 0.27s; }
  .nav-links.mobile-open a:nth-child(5) { animation-delay: 0.34s; }
  .nav-links.mobile-open a:hover { background: rgba(255,255,255,0.1); }

  /* Layout */
  .hero         { flex-direction: column; padding: 48px 24px 56px; gap: 32px; min-height: auto; }
  .hero-text    { text-align: center; }
  .hero-btns    { justify-content: center; }
  .hero-logo-box { order: -1; }
  .hero-logo-box img { max-width: 180px; }
  .hero h1      { font-size: clamp(28px, 7vw, 40px); }

  .features        { grid-template-columns: 1fr; padding: 32px 20px; gap: 16px; }
  .feature-card    { text-align: center; }

  .about           { flex-direction: column; gap: 40px; }
  .about-stats     { grid-template-columns: 1fr 1fr; }

  .services-grid   { grid-template-columns: 1fr; gap: 16px; }
  .why-grid        { grid-template-columns: 1fr; gap: 16px; }
  .reviews-grid    { grid-template-columns: 1fr; gap: 16px; }
  .contact         { flex-direction: column; gap: 40px; }

  .cta-banner      { padding: 48px 24px; text-align: center; }

  .footer-grid     { grid-template-columns: 1fr 1fr; gap: 32px; }
  footer           { padding: 48px 24px 24px; }
  .footer-bottom   { flex-direction: column; text-align: center; gap: 8px; }
}

/* ══ Smartphone – max 768px ══ */
@media (max-width: 768px) {

  .topbar         { font-size: 12px; padding: 6px 16px; gap: 16px; flex-wrap: wrap; justify-content: center; }
  nav             { padding: 10px 16px; }
  .nav-logo img   { height: 36px; }

  .hero           { padding: 40px 16px 48px; }
  .hero h1        { font-size: clamp(24px, 8vw, 34px); margin-bottom: 12px; }
  .hero h2        { font-size: clamp(16px, 5vw, 22px); }
  .hero p         { font-size: 14px; }
  .hero-btns      { flex-direction: column; gap: 10px; }
  .btn-white,
  .btn-outline    { width: 100%; text-align: center; padding: 13px 20px; font-size: 15px; }

  section         { padding: 48px 16px; }
  .section-title  { font-size: clamp(22px, 6vw, 30px); }
  .section-sub    { font-size: 14px; margin-bottom: 24px; }

  .about          { padding: 48px 16px; }
  .about ul       { padding-left: 0; }
  .about ul li    { font-size: 14px; }
  .stat-card      { padding: 18px 12px; }
  .stat-num       { font-size: 28px; }

  .service-card   { padding: 22px 18px; }
  .service-icon   { width: 44px; height: 44px; }
  .service-card h3 { font-size: 16px; }
  .service-card p  { font-size: 13px; }

  .why-card       { padding: 20px 18px; }
  .why-num        { font-size: 28px; }
  .why-card h3    { font-size: 15px; }
  .why-card p     { font-size: 13px; }

  .review-card    { padding: 20px 18px; }
  .review-card p  { font-size: 13px; }

  .cta-banner h2  { font-size: 22px; }
  .cta-banner p   { font-size: 14px; }
  .btn-cta        { width: 100%; text-align: center; padding: 14px 20px; }

  .contact-info h3 { font-size: 20px; }
  .contact-item   { gap: 12px; margin-bottom: 16px; }
  .contact-ic     { width: 36px; height: 36px; min-width: 36px; }
  .contact-text strong { font-size: 13px; }
  .contact-text span   { font-size: 12px; }
  .contact-form h3 { font-size: 20px; }
  .form-row        { grid-template-columns: 1fr; }
  .form-group input,
  .form-group textarea,
  .form-group select { font-size: 16px; padding: 12px 14px; }
  .btn-submit      { padding: 14px; font-size: 15px; }

  .footer-grid    { grid-template-columns: 1fr; gap: 24px; }
  .footer-logo img { height: 48px; }
}

/* ══ Kleines Smartphone – max 480px ══ */
@media (max-width: 480px) {
  .topbar   { font-size: 11px; padding: 5px 12px; gap: 10px; }
  nav       { padding: 8px 12px; }
  .hero     { padding: 32px 12px 40px; }
  .hero h1  { font-size: clamp(22px, 9vw, 28px); }
  section   { padding: 40px 12px; }
  footer    { padding: 36px 12px 20px; }
}