/* ============================================================
   Förderverein Burg Frauenstein e.V. — Haupt-Stylesheet
   Responsive, barrierefrei, semantisches CSS
   ============================================================ */

/* --- Benutzerdefinierte Eigenschaften ----------------------- */
:root {
  --color-primary:       #8b1a1a;
  --color-primary-dark:  #6b1414;
  --color-primary-light: #b02020;
  --color-dark:          #2c1810;
  --color-text:          #3a2018;
  --color-text-muted:    #6b5040;
  --color-parchment:     #f5ead8;
  --color-parchment-semi:#f0e3cd;
  --color-border:        #d4b896;
  --color-white:         #ffffff;

  --font-heading: Georgia, 'Times New Roman', serif;
  --font-body:    'Segoe UI', Arial, Helvetica, sans-serif;

  --max-width:   1100px;
  --nav-height:  68px;

  --shadow-sm:   0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md:   0 4px 20px rgba(0, 0, 0, 0.2);
  --radius:      4px;
  --transition:  0.2s ease;
}

/* --- Reset & Basis ------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-parchment);
  background-image: url('../i/HG.jpg');
  background-size: cover;
  background-attachment: fixed;
  background-position: center top;
  min-height: 100vh;
  line-height: 1.75;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul, ol {
  padding-left: 1.5rem;
}

/* --- Skip-Link (Barrierefreiheit) --------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.5rem 1.25rem;
  border-radius: 0 0 var(--radius) var(--radius);
  text-decoration: none;
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

/* --- Seitenkopf & Logo -------------------------------------- */
.site-header {
  background: rgba(245, 234, 216, 0.96);
  border-bottom: 3px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 200;
  backdrop-filter: blur(6px);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo img {
  height: 48px;
  width: auto;
}

/* --- Hauptnavigation --------------------------------------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 9px 8px;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.main-nav {
  display: flex;
  align-items: center;
}

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

.nav-list a {
  display: block;
  padding: 0.5rem 1rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  position: relative;
  transition: color var(--transition);
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--color-primary);
}

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

/* --- Seiteninhalt-Overlay ---------------------------------- */
.page-wrapper {
  background: rgba(245, 234, 216, 0.72);
  min-height: calc(100vh - var(--nav-height));
}

/* --- Hero-Bereich ----------------------------------------- */
.hero {
  background: linear-gradient(
    135deg,
    rgba(107, 20, 20, 0.88) 0%,
    rgba(139, 26, 26, 0.82) 60%,
    rgba(80, 30, 10, 0.85) 100%
  );
  color: var(--color-white);
  padding: 4rem 1.5rem 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../i/HG.jpg') center / cover;
  opacity: 0.12;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  line-height: 1.2;
}

.hero .tagline {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  font-style: italic;
  opacity: 0.92;
  max-width: 600px;
  margin: 0 auto 1.75rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Seiteninhalt-Banner (für Unterseiten) ---------------- */
.page-banner {
  background: linear-gradient(
    135deg,
    rgba(107, 20, 20, 0.85) 0%,
    rgba(139, 26, 26, 0.78) 100%
  );
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.page-banner h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--color-white);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.page-banner p {
  color: rgba(255, 255, 255, 0.88);
  margin-top: 0.5rem;
  font-style: italic;
  font-size: 1.05rem;
}

/* --- Hauptinhalt ------------------------------------------ */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

/* --- Karten / Abschnitte ---------------------------------- */
.card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.card:last-child {
  margin-bottom: 0;
}

.card h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.card h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-primary-dark);
  margin: 1.5rem 0 0.5rem;
}

.card h3:first-child {
  margin-top: 0;
}

.card p {
  margin-bottom: 0.9rem;
}

.card p:last-child {
  margin-bottom: 0;
}

.card ul, .card ol {
  margin-bottom: 0.9rem;
}

.card li {
  margin-bottom: 0.3rem;
}

/* --- Startseiten-Grid ------------------------------------- */
.home-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.home-image-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

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

/* --- Aufgaben-Liste --------------------------------------- */
.task-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.task-list li {
  display: flex;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}

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

.task-icon {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.task-content strong {
  display: block;
  color: var(--color-primary-dark);
  font-family: var(--font-heading);
  margin-bottom: 0.2rem;
}

/* --- Termine-Seite ---------------------------------------- */
.event-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.event-item {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 0 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}

.event-item:last-child {
  border-bottom: none;
}

.event-date {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius);
  text-align: center;
  padding: 0.5rem 0.4rem;
  font-weight: 700;
  line-height: 1.2;
  font-size: 0.85rem;
}

.event-date .day {
  display: block;
  font-size: 1.8rem;
  font-family: var(--font-heading);
  line-height: 1;
}

.event-date .month {
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.event-meta {
  padding-top: 0.1rem;
}

.event-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary);
  font-family: var(--font-heading);
}

.event-desc {
  margin-top: 0.3rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.event-tag {
  display: inline-block;
  background: rgba(139, 26, 26, 0.1);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 2rem;
  margin-top: 0.4rem;
  letter-spacing: 0.03em;
}

/* --- Galerie-Seite ---------------------------------------- */
.gallery-section {
  margin-bottom: 2.5rem;
}

.gallery-section-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-primary);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  background: var(--color-parchment-semi);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-item:hover img,
.gallery-item:focus img {
  transform: scale(1.06);
}

.gallery-item:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(139, 26, 26, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.gallery-overlay svg {
  color: var(--color-white);
  opacity: 0;
  transition: opacity var(--transition);
  width: 2rem;
  height: 2rem;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.gallery-item:hover .gallery-overlay,
.gallery-item:focus .gallery-overlay {
  background: rgba(139, 26, 26, 0.35);
}

.gallery-item:hover .gallery-overlay svg,
.gallery-item:focus .gallery-overlay svg {
  opacity: 1;
}

/* --- Lightbox --------------------------------------------- */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.lightbox.is-open {
  display: flex;
}

.lightbox-img-wrap {
  position: relative;
  max-width: min(90vw, 1100px);
  max-height: 90vh;
}

.lightbox-img-wrap img {
  max-width: 100%;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  display: block;
}

.lightbox-counter {
  position: absolute;
  bottom: -2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  white-space: nowrap;
}

.lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  z-index: 1001;
}

.lightbox-close:hover {
  background: var(--color-primary-dark);
}

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(139, 26, 26, 0.75);
  color: var(--color-white);
  border: none;
  width: 48px;
  height: 80px;
  font-size: 1.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  z-index: 1001;
}

.lightbox-prev {
  left: 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.lightbox-next {
  right: 0;
  border-radius: var(--radius) 0 0 var(--radius);
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: var(--color-primary);
}

/* --- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.4rem;
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform 0.1s;
  border: 2px solid var(--color-primary);
  cursor: pointer;
  font-family: var(--font-body);
}

.btn:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

.btn:active {
  transform: scale(0.98);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-white:hover {
  background: var(--color-parchment);
  color: var(--color-primary-dark);
  border-color: var(--color-parchment);
}

/* --- Mitgliedsantrag-Formular ----------------------------- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--color-dark);
  font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 26, 26, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: auto;
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* --- Datenschutz / Impressum ------------------------------ */
.legal-section {
  margin-bottom: 2rem;
}

.legal-section h2 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-primary);
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.legal-section h2:first-child {
  margin-top: 0;
}

.legal-section h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  margin: 1.2rem 0 0.4rem;
}

.legal-section p,
.legal-section li {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.legal-section address {
  font-style: normal;
  line-height: 1.8;
}

/* --- Seitensubtitel --------------------------------------- */
.section-header {
  margin-bottom: 2rem;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* --- Infobox ---------------------------------------------- */
.info-box {
  background: rgba(139, 26, 26, 0.07);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}

.info-box p {
  margin: 0;
  font-size: 0.95rem;
}

/* --- Satzung-PDF-Link ------------------------------------- */
.pdf-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.5rem;
  background: rgba(255, 255, 255, 0.9);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
  margin-top: 1rem;
}

.pdf-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.pdf-icon {
  font-size: 1.5rem;
  line-height: 1;
}

/* --- Seitenende ------------------------------------------- */
.site-footer {
  background: rgba(28, 14, 8, 0.98);
  color: #f0e6d6;
  padding: 2.5rem 1.5rem 1.75rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: start;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 1.5rem;
}

.footer-info p {
  font-size: 0.9rem;
  color: #f0e6d6;
  margin-bottom: 0.3rem;
}

.footer-info p:last-child {
  margin-bottom: 0;
}

.footer-logo img {
  height: 44px;
  width: auto;
  opacity: 0.85;
  filter: brightness(1.8) grayscale(0.2);
}

.footer-nav-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.25rem;
  padding: 0;
  margin: 0;
}

.footer-nav a {
  color: #f0e6d6;
  text-decoration: underline;
  text-decoration-color: rgba(240, 230, 214, 0.35);
  font-size: 0.9rem;
  transition: color var(--transition), text-decoration-color var(--transition);
}

.footer-nav a:hover {
  color: var(--color-white);
  text-decoration-color: var(--color-white);
}

.footer-copy {
  font-size: 0.82rem;
  color: rgba(240, 230, 214, 0.65);
  white-space: nowrap;
}

/* --- Hilfsprogramme --------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-0 { margin-bottom: 0 !important; }

/* --- Fokus-Stile ------------------------------------------ */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* --- Responsive: Tablet ----------------------------------- */
@media (max-width: 900px) {
  .home-grid {
    grid-template-columns: 1fr;
  }

  .home-image-card {
    height: 260px;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }
}

/* --- Responsive: Mobil ------------------------------------ */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(245, 234, 216, 0.98);
    border-bottom: 2px solid var(--color-primary);
    padding: 0.75rem 1rem 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: var(--shadow-md);
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0.15rem;
  }

  .nav-list a {
    padding: 0.7rem 1rem;
    font-size: 1.1rem;
    width: 100%;
    border-radius: var(--radius);
  }

  .nav-list a::after {
    display: none;
  }

  .nav-list a:hover,
  .nav-list a[aria-current="page"] {
    background: rgba(139, 26, 26, 0.08);
  }

  .hero {
    padding: 3rem 1.25rem 2.5rem;
  }

  .event-item {
    grid-template-columns: 4.5rem 1fr;
    gap: 0 1rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-nav-wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  main {
    padding: 1.5rem 1rem 3rem;
  }

  .card {
    padding: 1.25rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
}

/* --- Druckstile ------------------------------------------- */
@media print {
  .site-header,
  .site-footer,
  .hero-actions,
  .lightbox {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}