*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #e05a00;
  --gap: 12px;
  --radius: 999px;
  --menu-width: 280px;

  --bg:        #fff;
  --bg-menu:   #fff;
  --bg-item:   #f0f0f0;
  --bg-tag:    #fff;
  --text:      #111;
  --text-muted:#555;
  --text-faint:#999;
  --border:    #eee;
  --border-tag:#ddd;
  --btn-hover: #f3f3f3;
  --header-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --footer-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
}

body.dark {
  --bg:        #111;
  --bg-menu:   #1a1a1a;
  --bg-item:   #222;
  --bg-tag:    #1a1a1a;
  --text:      #eee;
  --text-muted:#aaa;
  --text-faint:#666;
  --border:    #2a2a2a;
  --border-tag:#333;
  --btn-hover: #222;
  --header-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
  --footer-shadow: 0 -2px 16px rgba(0, 0, 0, 0.5);
}

body {
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
  padding-top: 64px;
  padding-bottom: 40px;
}

/* Header */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 1.5rem;
  background: var(--bg);
  box-shadow: var(--header-shadow);
  transition: background 0.3s, box-shadow 0.3s;
}
.logo { text-decoration: none; color: var(--accent); font-size: 1.1rem; }

/* Burger Button */
.burger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.burger span {
  display: block; width: 24px; height: 2px;
  background: var(--text); transition: background 0.2s;
}
.burger:hover span { background: var(--accent); }

/* Burger Menu */
#burger-menu {
  position: fixed; top: 0; right: 0; height: 100%;
  width: var(--menu-width); background: var(--bg-menu);
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  z-index: 200; padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.3s ease, background 0.3s;
  overflow-y: auto; display: flex; flex-direction: column;
}
#burger-menu.open { transform: translateX(0); }

.burger-close {
  background: none; border: none; font-size: 1.8rem;
  cursor: pointer; color: var(--text); line-height: 1;
  display: block; margin-left: auto; margin-bottom: 1.5rem;
}
.menu-label {
  font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text-faint); margin-bottom: 0.75rem;
}

/* Album Nav */
#album-nav { display: flex; flex-direction: column; gap: 0.25rem; flex: 1; }
.album-btn {
  padding: 0.55rem 0.75rem; border: none; background: none;
  font-size: 0.95rem; color: var(--text-muted); cursor: pointer;
  text-align: left; border-radius: 6px;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.album-btn.active, .album-btn:hover { background: var(--btn-hover); color: var(--text); }
.album-btn.active { font-weight: 600; color: var(--accent); }

/* Divider */
.menu-divider { height: 1px; background: var(--border); margin: 1.5rem 0 1rem; }

/* Toggles */
.darkmode-row {
  display: flex; align-items: center;
  justify-content: space-between; padding: 0 0.25rem;
}
.darkmode-label { font-size: 0.9rem; color: var(--text-muted); }
.darkmode-switch {
  width: 44px; height: 24px; border-radius: 999px; border: none;
  background: var(--border-tag); cursor: pointer; position: relative;
  transition: background 0.25s; padding: 0; flex-shrink: 0;
}
.darkmode-switch.on { background: var(--accent); }
.darkmode-knob {
  position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; transition: transform 0.25s; display: block;
}
.darkmode-switch.on .darkmode-knob { transform: translateX(20px); }

/* Overlay */
#burger-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.3); z-index: 199;
}
#burger-overlay.open { display: block; }

/* Tag-Filter */
#tag-filters {
  display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0.75rem 1.5rem;
}
.tag-btn {
  padding: 0.25rem 0.8rem;
  border: 1px solid var(--tag-bg, var(--border-tag));
  border-radius: var(--radius);
  background: var(--tag-bg, var(--bg-tag));
  color: var(--tag-text, var(--text-muted));
  font-size: 0.8rem; cursor: pointer; transition: all 0.18s; white-space: nowrap;
}
.tag-btn.active {
  background: var(--accent) !important; color: #fff !important;
  border-color: var(--accent) !important;
  box-shadow: 0 2px 8px rgba(224, 90, 0, 0.35); font-weight: 600;
}
.tag-btn:hover:not(.active) { filter: brightness(0.95); }
.tag-more {
  background: var(--btn-hover) !important; color: var(--text-faint) !important;
  border-color: var(--border-tag) !important; font-size: 0.75rem;
}

/* Album Header */
#album-header { display: none; padding: 0.75rem 1.5rem 0.25rem; }
#album-title {
  font-size: 2rem; font-weight: 300; letter-spacing: -0.02em;
  color: var(--accent); margin-bottom: 0.3rem; display: block; width: 100%;
}
#album-description { color: var(--text-faint); font-size: 0.9rem; line-height: 1.5; }

/* Galerie – JS Masonry kürzeste Spalte */
#gallery {
  display: flex;
  align-items: flex-start;
  gap: var(--gap);
  padding: var(--gap) 1.5rem;
}
.masonry-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}
.gallery-item {
  cursor: pointer; overflow: hidden; background: var(--bg-item);
}
.gallery-item img {
  width: 100%; display: block; transition: transform 0.3s ease;
}
.gallery-item:hover img { transform: scale(1.04); }

/* Rahmen */
body.framed .gallery-item img { border: 2px solid #666; }
body.dark.framed .gallery-item img { border: 5px solid #fff; }

/* Sentinel */
#scroll-sentinel { height: 1px; }

/* Lightbox */
#lightbox {
  display: none; position: fixed; inset: 0; background: #000;
  z-index: 300; flex-direction: column; align-items: center; justify-content: center;
}
#lightbox.open { display: flex; }
#lightbox-header {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; justify-content: center; align-items: center;
  padding: 1rem 1.5rem; z-index: 302;
}
.lightbox-logo { color: var(--accent); font-size: 1rem; }
#lightbox-close {
  position: absolute; right: 1.5rem;
  background: none; border: none; color: #fff; font-size: 2rem;
  cursor: pointer; line-height: 1;
}
#lightbox img {
  max-height: calc(90vh - 60px); max-width: 90vw;
  object-fit: contain; border: 5px solid #fff;
}
#lightbox-prev, #lightbox-next {
  position: fixed; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: #fff; font-size: 3.5rem;
  cursor: pointer; line-height: 1; padding: 0 1rem;
  transition: opacity 0.2s; z-index: 301; user-select: none;
}
#lightbox-prev { left: 0; }
#lightbox-next { right: 0; }

/* Footer – fix unten */
footer {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px 1.5rem; background: var(--bg);
  box-shadow: var(--footer-shadow);
  transition: background 0.3s, box-shadow 0.3s;
}
.footer-instagram {
  display: flex; align-items: center; gap: 0.4rem;
  text-decoration: none; color: var(--text-faint); font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-instagram:hover { color: var(--accent); }
.footer-impressum { text-decoration: none; color: var(--text-faint); font-size: 0.8rem; }
.footer-impressum:hover { color: var(--text); }

/* Leer-Zustand */
#gallery:empty::after {
  content: 'Keine Fotos gefunden.';
  display: block; text-align: center; color: var(--text-faint);
  padding: 3rem; font-size: 0.9rem;
}