/* ===================
   Variables & Reset
   =================== */

:root {
  --bg: #0b1220;
  --card: #121b2f;
  --text: #eaf0ff;
  --muted: #b9c3dd;
  --accent: #4fd1c5;
  --accent2: #7aa7ff;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

/* ===================
   Base
   =================== */

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 15% 0%, rgba(79, 209, 197, 0.18), transparent 55%),
    radial-gradient(900px 500px at 80% 10%, rgba(122, 167, 255, 0.18), transparent 60%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: inherit;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 3.3vw, 40px);
  line-height: 1.1;
}

h2 {
  margin: 0 0 10px;
  font-size: 22px;
}

h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

p {
  margin: 10px 0;
  color: var(--muted);
}

.small {
  font-size: 12.5px;
}

/* ===================
   Layout
   =================== */

.container {
  max-width: 1050px;
  margin: 0 auto;
  padding: 28px 18px 56px;
}

section {
  margin-top: 22px;
  scroll-margin-top: 80px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 10px;
}

/* ===================
   Header & Navigation
   =================== */

header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 18, 32, 0.75);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav {
  max-width: 1050px;
  margin: 0 auto;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(79, 209, 197, 0.95), rgba(122, 167, 255, 0.95));
  box-shadow: var(--shadow);
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

nav a:hover {
  color: var(--text);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.04);
}

/* ===================
   Components: Panel & Card
   =================== */

.panel {
  background: rgba(18, 27, 47, 0.85);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 24px;
}

.card {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  padding: 20px;
}

.card p {
  margin: 8px 0;
  color: var(--muted);
}

.card--compact {
  padding: 16px 20px;
}

.card--compact h3 {
  margin-bottom: 12px;
}

/* ===================
   Components: Buttons
   =================== */

.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 650;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  transition: filter 0.2s ease;
}

.btn:hover {
  filter: brightness(1.06);
}

.btn.primary {
  border-color: rgba(79, 209, 197, 0.45);
  background: linear-gradient(135deg, rgba(79, 209, 197, 0.18), rgba(122, 167, 255, 0.18));
}

.ctaRow {
  margin-top: 14px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ===================
   Components: Lists
   =================== */

.list {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

/* ===================
   Section: Kontakt & Verein
   =================== */

.kontakt-verein-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.kontakt-box,
.verein-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.kontakt-box h3,
.verein-box h3 {
  color: var(--accent);
  margin-bottom: 1rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kontakt-box p,
.verein-box p {
  margin: 0.75rem 0;
  line-height: 1.6;
}

.kontakt-box a,
.verein-box a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.kontakt-box a:hover,
.verein-box a:hover {
  color: var(--accent2);
  text-decoration: underline;
}

/* Ältere Kontakt-Styles (Fallback) */
.kontakt-grid {
  display: grid;
  grid-template-columns: auto auto;
  gap: 8px 32px;
}

.kontakt-grid p {
  margin: 0;
  white-space: nowrap;
}

.kontakt-adresse {
  grid-column: 1 / -1;
  white-space: normal;
}

/* ===================
   Section: Spenden
   =================== */

/* Bankdaten */
.bank-details {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin: 1rem 0;
}

.bank-details .list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.bank-details .list li {
  padding: 0.5rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.bank-details .list li:last-child {
  border-bottom: none;
}

.bank-details .list li strong {
  color: var(--text);
}

/* Copy Button */
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
  background: rgba(79, 209, 197, 0.1);
  border: 1px solid rgba(79, 209, 197, 0.3);
  border-radius: 6px;
  cursor: pointer;
  color: var(--accent);
  transition: all 0.2s ease;
}

.copy-btn:hover {
  background: rgba(79, 209, 197, 0.2);
  border-color: rgba(79, 209, 197, 0.5);
}

.copy-btn.copied {
  background: rgba(79, 209, 197, 0.25);
  border-color: var(--accent);
}

.copy-btn svg {
  width: 14px;
  height: 14px;
}

.copy-label {
  font-size: 0.75rem;
  font-weight: 500;
}

/* QR Code */
.qr-code {
  text-align: center;
  margin: 1.5rem 0;
}

.qr-code img {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.95);
}

.qr-hint {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

/* Spenden Grid: Bankdaten + QR */
.spenden-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
  align-items: start;
  margin: 1rem 0;
}

/* Spendenbescheinigung */
.spendenbescheinigung {
  margin-top: 1.25rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.spendenbescheinigung summary {
  cursor: pointer;
  list-style: none;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spendenbescheinigung summary::-webkit-details-marker {
  display: none;
}

.spendenbescheinigung summary::before {
  content: "▸";
  color: var(--accent);
  transition: transform 0.2s ease;
}

.spendenbescheinigung[open] summary::before {
  transform: rotate(90deg);
}

.spendenbescheinigung p {
  margin: 0.75rem 0;
}

.spendenbescheinigung ul {
  margin: 0.5rem 0 1rem 1.25rem;
  color: var(--muted);
}

.spendenbescheinigung ul li {
  padding: 0.25rem 0;
}

.spendenbescheinigung .ctaRow {
  margin-top: 1rem;
}

/* ===================
   Section: Partner Slideshow
   =================== */

.slideshow-container {
  position: relative;
  margin-top: 10px;
  overflow: hidden;
}

.slideshow-container::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  animation: progress 15s linear infinite;
}

@keyframes progress {
  from { width: 0%; }
  to { width: 100%; }
}

.partner-slide {
  display: none;
  padding: 24px 48px;
  text-align: center;
  animation: slideIn 0.4s ease-out;
}

.partner-slide.active {
  display: block;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.partner-image {
  width: 160px;
  height: 160px;
  margin: 0 auto 18px;
  border-radius: 50%;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.partner-slide h3 {
  color: var(--text);
  margin-bottom: 10px;
  font-size: 20px;
}

.partner-description {
  color: var(--muted);
  line-height: 1.65;
  max-width: 500px;
  margin: 0 auto;
}

/* Slideshow Navigation */
.slide-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  transition: all 0.25s ease;
}

.slide-nav:hover {
  background: rgba(79, 209, 197, 0.15);
  border-color: rgba(79, 209, 197, 0.4);
  color: var(--accent);
}

.slide-nav.prev { left: 8px; }
.slide-nav.next { right: 8px; }

/* Slideshow Dots */
.slide-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all 0.25s ease;
}

.dot:hover {
  background: rgba(79, 209, 197, 0.4);
}

.dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(79, 209, 197, 0.5);
}

/* ===================
   Footer
   =================== */

footer {
  border-top: 1px solid var(--border);
  padding: 18px;
  color: var(--muted);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: inherit;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ===================
   Responsive
   =================== */

@media (max-width: 860px) {
  .grid,
  .contact {
    grid-template-columns: 1fr;
  }

  .kontakt-verein-grid {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: 6px;
  }
}

@media (max-width: 600px) {
  .spenden-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .spenden-grid .bank-details {
    text-align: left;
  }

  .kontakt-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .kontakt-grid p {
    white-space: normal;
  }

  .panel {
    padding: 18px;
  }

  .card {
    padding: 16px;
  }

  .kontakt-box,
  .verein-box {
    padding: 1rem;
  }

  .partner-slide {
    padding: 18px 40px;
  }

  .partner-image {
    width: 120px;
    height: 120px;
  }

  .slide-nav {
    width: 36px;
    height: 36px;
  }

  .slide-nav.prev { left: 4px; }
  .slide-nav.next { right: 4px; }

  .partner-slide h3 {
    font-size: 18px;
  }

  .footer-links {
    gap: 1rem;
  }
}