:root {
  --color-bg: #fffbfd;
  --color-bg-alt: #fce9f2;
  --color-text: #201820;
  --color-muted: #6b5c66;
  --color-primary: #e63f9d;
  --color-primary-dark: #b21f78;
  --color-primary-soft: #eb8fc4;
  --color-accent: #d3dc2a;
  --color-border: #f5cfe4;
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

h1, h2 {
  line-height: 1.3;
  font-family: "Permanent Marker", "Arial Black", system-ui, sans-serif;
  font-weight: 400;
  letter-spacing: 0.01em;
}

h3 {
  line-height: 1.25;
}

.logo {
  font-family: "Permanent Marker", "Arial Black", system-ui, sans-serif;
}

a {
  color: var(--color-primary);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header / nav */
.site-header {
  border-bottom: 3px solid #000;
  position: sticky;
  top: 0;
  background: rgba(235, 143, 196, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--color-text);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.nav-links a:hover {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-dark);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
}

/* Hero */
.hero {
  padding: 7rem 0;
  background:
    linear-gradient(rgba(20, 8, 16, 0.55), rgba(20, 8, 16, 0.55)),
    url("images/rueckblick/2023/2023-5.jpg") center center / cover no-repeat;
  border-bottom: 4px solid #000;
  text-align: center;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.5rem;
  margin: 0 0 0.75rem;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: #fff;
  margin: 0 0 2rem;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
}

.btn {
  display: inline-block;
  background: var(--color-accent);
  color: #000;
  text-decoration: none;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 700;
  border: 3px solid #000;
  transition: transform 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

/* Sections */
.section {
  padding: 4.5rem 0;
  position: relative;
}

.about-flyer {
  display: flex;
  justify-content: center;
  margin-top: 2.5rem;
}

.about-flyer img {
  max-width: 320px;
  width: 100%;
  height: auto;
  border: 4px solid #000;
  border-radius: 6px;
  transform: rotate(-2deg);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.25);
}

.about-instagram {
  text-align: center;
  margin: 1.5rem 0 0;
}

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

.section h2 {
  font-size: 1.85rem;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.section p {
  color: var(--color-text);
  max-width: 68ch;
}

.section ul {
  max-width: 60ch;
  padding-left: 0;
  list-style: none;
  margin: 1.5rem 0 0;
}

.section ul li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
}

.section ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
  max-width: none;
}

.gallery-item {
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid #000;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.gallery-item.placeholder {
  background: repeating-linear-gradient(
    45deg,
    var(--color-bg-alt),
    var(--color-bg-alt) 10px,
    var(--color-border) 10px,
    var(--color-border) 20px
  );
}

.gallery-year {
  font-family: "Permanent Marker", "Arial Black", system-ui, sans-serif;
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--color-primary-soft);
  margin: 2.5rem 0 0.75rem;
}

.gallery-year:first-of-type {
  margin-top: 1.5rem;
}

/* Sponsors */
.sponsor-label {
  text-align: center;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.85rem;
  margin: 0 0 1.5rem;
}

.sponsor-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
  background: #fff;
  border: 2px solid #000;
  border-radius: 12px;
  padding: 1.75rem 2rem;
}

.sponsor-main {
  height: 90px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
}

.sponsor-others {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.sponsor-others img {
  height: 32px;
  width: auto;
  max-width: 130px;
  object-fit: contain;
}

/* FAQ */
.faq-item {
  background: var(--color-bg);
  border: 2px solid #000;
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.faq-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.faq-item p {
  margin: 0;
  color: var(--color-muted);
}

/* Footer */
.site-footer {
  padding: 2.5rem 0;
  text-align: center;
  color: var(--color-text);
  font-size: 0.9rem;
  background: var(--color-primary-soft);
  border-top: 3px solid #000;
}

.site-footer .credit {
  margin-top: 0.4rem;
  font-size: 0.85rem;
}

.site-footer .credit a {
  color: var(--color-primary-dark);
}

.footer-instagram {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.footer-instagram:hover {
  color: var(--color-primary-dark);
}

.photo-credit {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.photo-credit a {
  color: var(--color-primary-dark);
}

/* Responsive nav */
@media (max-width: 700px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.open {
    max-height: 300px;
  }

  .nav-links li {
    border-top: 1px solid var(--color-border);
  }

  .nav-links a {
    display: block;
    padding: 1rem 1.5rem;
    border-bottom: none;
  }

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

  .hero h1 {
    font-size: 2rem;
  }
}