/* ============================================================
   Kinderschwimmschule Ratzeburg – Hauptstylesheet
   ============================================================ */

/* ---------- Design-Tokens ---------- */
:root{
  --navy:      #093e62;
  --ocean:     #2991d7;
  --accent:    #0052a3;
  --sun:       #ffbf44;
  --foam:      #f2faff;
  --ice:       #e9f4fb;
  --text:      #646464;
  --dark:      #151515;
  --white:     #ffffff;
  --radius:    18px;
  --radius-btn:30px;
  --shadow:    0 2px 48px rgba(44,162,252,.09);
  --transition:.35s ease;
}

/* ---------- Reset & Base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Nunito",sans-serif;
  font-size:18px;
  font-weight:500;
  line-height:1.7;
  color:var(--text);
  background:var(--white);
}
main{display:block}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
ul,ol{list-style:none}

/* ---------- Typography ---------- */
h1,h2,h3,h4,h5{
  font-family:"Fredoka",sans-serif;
  color:var(--dark);
  line-height:1.15;
  font-weight:700;
}
h1{font-size:clamp(2rem,5vw,3.4rem);margin-bottom:.8rem}
h2{font-size:clamp(1.6rem,3.6vw,2.6rem);margin-bottom:.7rem}
h3{font-size:clamp(1.15rem,2vw,1.4rem);margin-bottom:.45rem}
h4{font-size:1.1rem}
p+p{margin-top:.85rem}

.section-label{
  font-family:"Fredoka",sans-serif;
  font-size:.95rem;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:1.5px;
  color:var(--accent);
  margin-bottom:.45rem;
  display:inline-block;
}

/* ---------- Layout ---------- */
.container{width:min(1320px,94%);margin:0 auto}
.section{padding:5rem 0}
.section--alt{background:var(--foam)}
.section--dark{background:var(--navy);color:var(--white)}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4,.section--dark p,.section--dark .section-label,.section--dark .stat__label,.section--dark .stat__number{color:var(--white)}

.skip-links{
  position:absolute;
  top:0;
  left:0;
  z-index:300;
  display:flex;
  flex-direction:column;
  gap:.45rem;
  padding:.75rem;
}
.skip-links a{
  position:absolute;
  left:-9999px;
  padding:.75rem 1rem;
  border-radius:14px;
  background:var(--navy);
  color:var(--white);
  box-shadow:var(--shadow);
}
.skip-links a:focus{
  position:static;
}

.grid{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-center{align-items:center}

.text-center{text-align:center}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  font-family:"Fredoka",sans-serif;
  font-size:1rem;font-weight:600;
  padding:.78rem 1.35rem;
  border-radius:var(--radius-btn);
  border:none;cursor:pointer;
  transition:all var(--transition);
}
.btn:hover{transform:translateY(-2px)}
.btn i{font-size:.78rem;transition:transform .5s}
.btn:hover i{transform:translateX(4px)}

.btn--accent{background:var(--accent);color:var(--white);box-shadow:0 10px 28px rgba(0,82,163,.28)}
.btn--accent:hover{background:#003d7a}
.btn--sun{background:var(--sun);color:#4a3600;box-shadow:0 10px 28px rgba(255,191,68,.28)}
.btn--sun:hover{background:#e6a430}
.btn--ghost{border:2px solid rgba(255,255,255,.45);color:var(--white);background:transparent}
.btn--ghost:hover{background:rgba(255,255,255,.12)}

.btns{display:flex;gap:1.2rem;align-items:center;flex-wrap:wrap;margin-top:1.8rem}

/* ---------- Topbar ---------- */
.topbar{
  background:var(--navy);color:rgba(255,255,255,.85);
  font-size:.88rem;
}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:42px;flex-wrap:wrap;gap:.5rem;
  padding:.2rem 0;
}
.topbar a{color:rgba(255,255,255,.85)}
.topbar a:hover{color:var(--accent)}
.socials{display:flex;gap:.55rem;align-items:center}
.socials a{
  width:30px;height:30px;display:grid;place-items:center;
  border-radius:50%;background:rgba(255,255,255,.12);
  font-size:.82rem;
}
.socials a:hover{background:var(--accent);color:var(--white)}

/* ---------- Header / Navigation ---------- */
.header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(9,62,98,.08);
  padding:.65rem 0;
}
.header__inner{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
}
.brand{display:flex;align-items:center;gap:0;text-decoration:none}
.brand img{
  width:120px;height:120px;flex:0 0 120px;object-fit:contain;
  border-radius:14px;background:#fff;
  box-shadow:unset;
}
.brand__text{display:none}

.nav{display:flex;align-items:center;gap:1.1rem}
.nav a{font-weight:700;font-size:.95rem;color:var(--navy)}
.nav a:hover,.nav a.active{color:var(--accent)}
.nav__whatsapp{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:#25d366;
  color:#fff !important;
  font-size:1.15rem;
}
.nav__whatsapp:hover{
  background:#1da851;
  transform:translateY(-1px);
}
.nav__cta{
  padding:.5rem .95rem;border-radius:var(--radius-btn);
  background:var(--accent);color:var(--white) !important;
}
.nav__cta:hover{background:var(--navy)}

/* 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(--navy);border-radius:2px;transition:var(--transition)}

/* Mobile menu */
.nav--mobile{
  display:none;
  position:absolute;top:100%;left:0;right:0;
  background:var(--white);
  box-shadow:0 14px 44px rgba(0,0,0,.12);
  padding:1rem 0;z-index:99;
}
.nav--mobile.open{display:block}
.nav--mobile a{
  display:block;padding:.65rem 5%;
  font-weight:700;font-size:1rem;color:var(--navy);border-bottom:1px solid var(--foam);
}
.nav--mobile a:hover{color:var(--accent);background:var(--foam)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:78vh;display:grid;align-items:center;
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(9,62,98,.82) 0%,rgba(41,145,215,.38) 100%);
}
.hero::after{
  content:"";position:absolute;bottom:-2px;left:0;right:0;
  height:80px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80'%3E%3Cpath fill='%23ffffff' d='M0,48C360,80,720,0,1080,48C1260,72,1380,64,1440,56V80H0Z'/%3E%3C/svg%3E") center/cover no-repeat;
}
.hero__content{
  position:relative;z-index:2;
  color:#ffffff;padding:4.5rem 0 6rem;
  max-width:680px;
  animation:fadeUp .8s ease both;
}
.hero__content h1,
.hero__content p,
.hero__content .hero__tag{
  color:#ffffff;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
.hero__tag{
  display:inline-block;margin-bottom:1rem;
  padding:.3rem .85rem;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.22);
  font-size:.9rem;font-weight:700;
}
.hero__content p{font-size:1.05rem;margin-bottom:1.3rem;max-width:56ch}

.hero__notice{
  margin:1.25rem 0 1.5rem;
  display:flex;
  flex-wrap:wrap;
  gap:.8rem 1.2rem;
  align-items:center;
  font-weight:700;
}
.hero__notice strong{color:var(--sun);font-family:"Fredoka",sans-serif}

/* Sub-page banner */
.sub-banner{
  position:relative;overflow:hidden;
  padding:5rem 0 3.5rem;text-align:center;
  background-size:cover;background-position:center;
}
.sub-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(9,62,98,.86),rgba(41,145,215,.46));
}
.sub-banner__content{position:relative;z-index:2;color:var(--white)}
.sub-banner h1,.sub-banner p,.sub-banner .breadcrumb{color:var(--white)}
.sub-banner h1{margin-bottom:.4rem}
.breadcrumb{font-size:.95rem;color:rgba(255,255,255,.75)}
.breadcrumb a{color:var(--accent);font-weight:700}

/* ---------- Cards ---------- */
.card{
  background:var(--white);border-radius:var(--radius);
  padding:1.5rem;
  border:1px solid rgba(9,62,98,.06);
  box-shadow:var(--shadow);
  transition:all var(--transition);
}
.card:hover{
  border-color:var(--accent);
  box-shadow:0 4px 42px rgba(0,82,163,.14);
  transform:translateY(-4px);
}
.card__icon{
  width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(0,82,163,.12);color:var(--accent);
  font-size:1.25rem;margin-bottom:.7rem;
}

/* ---------- Course block ---------- */
.course{
  background:var(--white);
  border-left:5px solid var(--accent);
  border-radius:var(--radius);
  padding:1.4rem;
  box-shadow:var(--shadow);
  transition:all var(--transition);
}
.course:hover{
  border-left-color:var(--sun);
  transform:translateY(-3px);
}

/* ---------- About collage ---------- */
.about-collage{position:relative;min-height:400px}
.about-collage img{
  position:absolute;border-radius:var(--radius);
  object-fit:cover;box-shadow:var(--shadow);
  border:4px solid var(--white);
}
.ac-1{width:60%;height:65%;left:0;top:0}
.ac-2{width:40%;height:40%;right:0;top:8%}
.ac-3{width:46%;height:42%;right:4%;bottom:0}

/* ---------- Stats ---------- */
.stat{text-align:center;padding:1.2rem .5rem}
.stat__number{
  font-family:"Fredoka",sans-serif;
  font-size:2.4rem;font-weight:700;color:var(--accent);
}
.stat__label{font-size:.95rem;color:var(--text)}

/* ---------- Gallery ---------- */
.gallery-grid img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:14px;
  box-shadow:0 8px 22px rgba(9,62,98,.16);
  transition:all var(--transition);
}
.gallery-grid img:hover{transform:translateY(-4px) scale(1.01)}

/* ---------- Testimonial ---------- */
.testimonial{
  background:var(--white);border-radius:var(--radius);
  padding:1.5rem;box-shadow:var(--shadow);
  border:1px solid transparent;
  transition:all var(--transition);
}
.testimonial:hover{border-color:var(--accent)}
.testimonial__stars{color:var(--sun);font-size:.9rem;margin-bottom:.55rem}
.testimonial__text{font-style:italic;margin-bottom:.9rem}
.testimonial__author{font-weight:700;color:var(--dark)}

/* ---------- FAQ ---------- */
.faq-item{
  background:var(--white);
  border:1px solid rgba(9,62,98,.08);
  border-radius:var(--radius);
  margin-bottom:.7rem;overflow:hidden;
  box-shadow:var(--shadow);
}
.faq-q{
  padding:1rem 1.2rem;font-weight:700;color:var(--dark);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  user-select:none;
}
.faq-q i{font-size:.8rem;color:var(--accent);transition:transform var(--transition)}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-a{padding:0 1.2rem 1rem;display:none}
.faq-item.open .faq-a{display:block}

/* ---------- Contact form ---------- */
.form-group{margin-bottom:1rem}
.form-group label{display:block;font-weight:700;color:var(--dark);margin-bottom:.3rem}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;padding:.72rem 1rem;
  border:1px solid #d8e6ee;border-radius:12px;
  font-family:inherit;font-size:.98rem;
  transition:all var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 2px 24px rgba(0,82,163,.14);
}
.form-group textarea{min-height:140px;resize:vertical}

/* ---------- Contact info boxes ---------- */
.info-card{
  background:var(--white);border-radius:var(--radius);
  padding:1.4rem;text-align:center;
  border:1px solid rgba(9,62,98,.06);box-shadow:var(--shadow);
  transition:all var(--transition);
}
.info-card:hover{border-color:var(--accent);transform:translateY(-3px)}
.info-card i{
  width:56px;height:56px;border-radius:50%;
  display:inline-grid;place-items:center;
  background:rgba(0,82,163,.12);color:var(--accent);
  font-size:1.2rem;margin-bottom:.6rem;
}

/* ---------- Footer ---------- */
.footer{background:var(--navy);color:rgba(255,255,255,.85);padding:3.5rem 0 0}
.footer h4,.footer strong{color:var(--white);margin-bottom:.7rem}
.footer a{color:rgba(255,255,255,.85)}
.footer p,.footer li{color:rgba(255,255,255,.85)}
.footer a:hover{color:var(--accent)}
.footer__bottom{
  margin-top:2.5rem;padding:1.2rem 0;
  border-top:1px solid rgba(255,255,255,.12);
  text-align:center;font-size:.9rem;
}
.footer .socials a{background:rgba(255,255,255,.1)}

/* Back to top - disabled */
.back-top{
  display:none !important;
}

.whatsapp-float{
  position:fixed;
  bottom:1.5rem;
  right:1.5rem;
  z-index:90;
  width:54px;
  height:54px;
  border-radius:50%;
  display:grid;
  place-items:center;
  background:#25d366;
  color:#fff;
  font-size:1.45rem;
  box-shadow:0 8px 24px rgba(29,168,81,.36);
  text-decoration: none;
}
.whatsapp-float:hover{
  background:#1da851;
  transform:translateY(-2px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablets & below */
@media(max-width:991px){
  .hamburger{display:flex}
  .nav--desktop{display:none}

  h1{font-size:clamp(1.7rem,4.8vw,2.6rem)}
  h2{font-size:clamp(1.4rem,3.4vw,2rem)}

  .section{padding:3.5rem 0}
  .hero{min-height:62vh}
  .hero__content{padding:3rem 0 5rem}

  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}

  .about-collage{min-height:300px}

  .footer .grid-4{grid-template-columns:1fr 1fr}
}

/* Mobile */
@media(max-width:680px){
  body{font-size:16px;line-height:1.6}

  .topbar__inner{justify-content:center;text-align:center;flex-direction:column;gap:.4rem;min-height:auto;padding:.5rem 0}
  .topbar{font-size:.81rem}

  h1{font-size:clamp(1.4rem,4.5vw,2.4rem)}
  h2{font-size:clamp(1.2rem,3.2vw,1.8rem)}

  .section{padding:2.2rem 0}
  .section-label{font-size:.88rem}
  
  .hero{min-height:52vh}
  .hero__content{padding:2.2rem 0 4.2rem}
  .hero__notice{font-size:0.95rem;gap:0.6rem}

  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;gap:1.2rem}

  .brand img{width:80px;height:80px;flex-basis:80px}

  .card{padding:1.2rem}
  .card__icon{width:48px;height:48px;font-size:1.1rem;margin-bottom:.5rem}
  
  .about-collage{
    min-height:auto;display:grid;grid-template-columns:1fr 1fr;gap:.5rem;
  }
  .about-collage img{position:static;width:100%;height:auto}
  .ac-1{grid-column:span 2}

  .stat{padding:1rem .4rem}
  .stat__number{font-size:1.8rem}
  .stat__label{font-size:.88rem}

  .gallery-grid img{aspect-ratio:16/9;border-radius:8px}

  .btn{font-size:.95rem;padding:.7rem 1.1rem;border-radius:var(--radius-btn)}
  .btns{display:flex;flex-direction:column;gap:0.8rem;width:100%}
  .btns .btn{width:100%;justify-content:center}

  .footer{padding:2.5rem 0 0}
  .footer h4{margin-bottom:.6rem;font-size:1rem}
  .footer .grid-4{grid-template-columns:1fr;gap:1rem}
  .footer a{font-size:.92rem}

  .whatsapp-float{right:1rem;bottom:1rem;width:50px;height:50px;font-size:1.2rem}
}

/* Small mobile */
@media(max-width:420px){
  .container{width:94%}
  .hero__content{padding:1.8rem 0 3.8rem}
  h1{font-size:clamp(1.35rem,6vw,1.8rem)}
  .hero__tag{font-size:.85rem}
  
  .section{padding:1.8rem 0}
  .card{padding:1rem}
  .card__icon{width:44px;height:44px;font-size:1rem}
  
  .btn{font-size:.92rem;padding:.65rem 1rem}
  .topbar{font-size:.78rem}
  .footer h4{font-size:.95rem}
  .footer a,.footer p,.footer li{font-size:.88rem}
}