/* ==========================================================
   WSVN - Wassersportverein Niederranna
   Statische Ersatzseite (HTML/CSS, kein JavaScript)
   ========================================================== */

:root {
  --blue: #0b6fb3;      /* Donau-Blau, Akzent */
  --blue-dark: #084f80;
  --ink: #2b2b2b;
  --muted: #6b6b6b;
  --grey: #f3f5f7;
  --line: #dde2e6;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 70px; }
body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }
a:hover { color: var(--blue-dark); }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.center { text-align: center; }

/* ---------- Header / Navigation ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(20, 24, 28, .96);
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.nav-row { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand {
  color: var(--white); text-decoration: none;
  font-weight: 800; font-size: 26px; letter-spacing: 3px;
}
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  color: #e8ecef; text-decoration: none; font-size: 15px;
  padding: 8px 12px; border-radius: 4px;
}
.nav a:hover, .nav a:focus-visible { background: rgba(255,255,255,.1); color: var(--white); }
.nav-toggle { display: none; }
.nav-burger { display: none; cursor: pointer; width: 30px; flex-direction: column; gap: 6px; }
.nav-burger span { display: block; height: 3px; background: var(--white); border-radius: 2px; }

@media (max-width: 900px) {
  .nav-burger { display: flex; }
  .nav {
    position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; gap: 0;
    background: rgba(20, 24, 28, .98);
    display: none; padding: 10px 0 16px;
  }
  .nav a { padding: 12px 24px; border-radius: 0; font-size: 17px; }
  .nav-toggle:checked ~ .nav { display: flex; }
}

/* ---------- Hero Slider (CSS Crossfade) ---------- */
.hero {
  position: relative; height: 78vh; min-height: 420px; max-height: 760px;
  overflow: hidden; background: #0d1b2a;
}
.slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  animation: fade 30s infinite;
}
.slide::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,.25), rgba(0,0,0,.45));
}
.slide:nth-child(1) { animation-delay: 0s; }
.slide:nth-child(2) { animation-delay: 6s; }
.slide:nth-child(3) { animation-delay: 12s; }
.slide:nth-child(4) { animation-delay: 18s; }
.slide:nth-child(5) { animation-delay: 24s; }
@keyframes fade {
  0%   { opacity: 0; }
  5%   { opacity: 1; }
  20%  { opacity: 1; }
  25%  { opacity: 0; }
  100% { opacity: 0; }
}
.slide-text { position: relative; z-index: 1; text-align: center; padding: 0 20px; }
.slide-text h1 {
  color: var(--white); margin: 0;
  font-size: clamp(34px, 6vw, 72px); line-height: 1.1;
  font-weight: 800; text-shadow: 0 2px 20px rgba(0,0,0,.5);
}
@media (prefers-reduced-motion: reduce) {
  .slide { animation: none; }
  .slide:nth-child(1) { opacity: 1; }
}

/* ---------- Sektionen ---------- */
.section { padding: 80px 0; }
.section-grey { background: var(--grey); }
.section-title {
  text-align: center; margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 40px); font-weight: 800; line-height: 1.2;
}
.section-title.small { font-size: 26px; text-align: left; margin-bottom: 16px; }
.section-lead {
  text-align: center; color: var(--muted);
  font-size: 19px; max-width: 760px; margin: 0 auto 48px;
}

.btn {
  display: inline-block; background: var(--blue); color: var(--white);
  text-decoration: none; padding: 12px 24px; border-radius: 4px; font-weight: 600;
}
.btn:hover { background: var(--blue-dark); color: var(--white); }
.btn-outline { background: transparent; color: var(--blue); border: 2px solid var(--blue); }
.btn-outline:hover { background: var(--blue); color: var(--white); }

/* ---------- Über uns ---------- */
.about-grid {
  display: grid; grid-template-columns: 220px 1fr; gap: 50px; align-items: start;
}
.about-logo img { width: 200px; margin: 0 auto; }
.about-text p { margin: 0 0 18px; }
@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ---------- Vorstand ---------- */
.team-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px 28px;
}
.member { text-align: center; }
.member img {
  width: 180px; height: 180px; object-fit: cover; object-position: top;
  border-radius: 50%; margin: 0 auto 16px; background: #fff;
  border: 4px solid var(--white); box-shadow: 0 2px 10px rgba(0,0,0,.12);
}
.member h3 { margin: 0; font-size: 20px; }
.member h4 { margin: 4px 0 10px; font-size: 14px; color: var(--blue); font-weight: 600; letter-spacing: .5px; }
.member p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 900px) { .team-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .team-grid { grid-template-columns: 1fr; } }

/* ---------- Sportarten ---------- */
.folio-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.folio { position: relative; margin: 0; overflow: hidden; border-radius: 4px; }
.folio img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.folio figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 36px 18px 16px; color: var(--white);
  background: linear-gradient(to top, rgba(0,0,0,.75), rgba(0,0,0,0));
}
.folio h3 { margin: 0; font-size: 22px; }
.folio span { font-size: 13px; opacity: .85; }
@media (max-width: 760px) { .folio-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .folio-grid { grid-template-columns: 1fr; } }

/* ---------- Vereinsschiff ---------- */
.ship-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.ship-img img { border-radius: 4px; box-shadow: 0 4px 20px rgba(0,0,0,.15); }
.ship-text p { margin: 0 0 18px; }
@media (max-width: 760px) { .ship-grid { grid-template-columns: 1fr; } }

/* ---------- Events ---------- */
.events-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 40px; }
.event { background: var(--white); border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.event img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.event-body { padding: 18px 20px 22px; }
.event time { font-size: 13px; color: var(--muted); }
.event h3 { margin: 6px 0 10px; font-size: 21px; line-height: 1.25; }
.event p { margin: 0; font-size: 15px; }
@media (max-width: 900px) { .events-grid { grid-template-columns: 1fr; } }

/* ---------- Sponsoren ---------- */
.sponsors {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 24px; align-items: center;
}
.sponsors img { margin: 0 auto; max-height: 90px; width: auto; filter: grayscale(1); opacity: .8; }
.sponsors a:hover img { filter: none; opacity: 1; }
@media (max-width: 900px) { .sponsors { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .sponsors { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Kontakt / Impressum ---------- */
.map-img { display: inline-block; max-width: 700px; border-radius: 4px; box-shadow: 0 4px 20px rgba(0,0,0,.15); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 70px; }
.social { list-style: none; padding: 0; margin: 20px 0 0; display: flex; gap: 20px; }
.social a { font-weight: 600; }
.imprint { list-style: none; padding: 0; margin: 0 0 20px; }
.imprint li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.privacy summary { cursor: pointer; font-weight: 600; color: var(--blue); }
.privacy p { font-size: 14px; color: var(--muted); }
@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

/* ---------- Footer ---------- */
.site-footer { background: #14181c; color: #aab2ba; padding: 36px 0; text-align: center; font-size: 14px; }
.site-footer .brand { display: inline-block; margin-bottom: 8px; }
.site-footer p { margin: 0; }

/* ---------- Fokus ---------- */
a:focus-visible, summary:focus-visible { outline: 3px solid #ffb400; outline-offset: 2px; }