:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1e222b;
  --border: #2a2f3a;
  --text: #e7e9ee;
  --text-dim: #9aa1ad;
  --accent: #4b8bf5;
  --accent-hover: #3a78e0;
  --danger: #e2504f;
  --radius: 10px;
}

* { box-sizing: border-box; }

/* hidden-Attribut muss auch display:flex/grid-Elemente ausblenden */
[hidden] { display: none !important; }

/* ---------------- Dialog & Toast ---------------- */
.dialog-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.dialog-box {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.dialog-title {
  margin: 0;
  font-size: 15px;
  color: var(--text);
  white-space: pre-line;
}
.dialog-input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
}
.dialog-input:focus { outline: none; border-color: var(--accent); }
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.dialog-box.danger .btn-primary { background: var(--danger); }
.dialog-box.danger .btn-primary:hover { filter: brightness(1.1); }

/* ---------------- Kontextmenü (Rechtsklick) ---------------- */
.ctx-menu {
  position: fixed;
  z-index: 150;
  min-width: 170px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}
.ctx-item {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
}
.ctx-item:hover { background: var(--surface); }
.ctx-item.danger { color: var(--danger); }
.ctx-sep { height: 1px; background: var(--border); margin: 5px 6px; }

/* ---------------- Speicheranzeige unten ---------------- */
.storage-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(15, 17, 21, 0.9);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text-dim);
}
.storage-bar .storage-sep { color: var(--border); }
.storage-bar strong { color: var(--text); font-weight: 500; }
.storage-meter {
  flex: 1;
  max-width: 220px;
  height: 5px;
  border-radius: 3px;
  background: var(--surface-2);
  overflow: hidden;
}
.storage-meter > span {
  display: block;
  height: 100%;
  background: var(--accent);
}

.toast {
  position: fixed;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 210;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  max-width: 90vw;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
}

/* ---------------- Login ---------------- */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.login-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 600;
}
.logo-mark { color: var(--accent); font-size: 24px; }
.login-sub { margin: -0.25rem 0 0.5rem; color: var(--text-dim); font-size: 14px; }
.login-error {
  margin: -0.25rem 0 0.5rem;
  color: var(--danger);
  font-size: 14px;
}
.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}
.login-card input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-size: 15px;
}
.login-card input:focus {
  outline: none;
  border-color: var(--accent);
}
.login-card button {
  margin-top: 0.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 11px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}
.login-card button:hover { background: var(--accent-hover); }

/* ---------------- Topbar ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 17px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.logout-form { margin: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius);
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  color: var(--text);
  background: none;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border-color: var(--border); color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-dim); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.1); }

.user-chip {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
}

/* ---------------- Filters ---------------- */
.filters { display: flex; gap: 8px; padding: 16px 18px 4px; }
.chip {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}
.chip:hover { color: var(--text); }
.chip-active { background: var(--text); color: var(--bg); border-color: var(--text); }

/* ---------------- Pfadleiste & Ordner ---------------- */
.pathbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 18px 0;
}
.pathbar-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.sort-select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
}
.sort-select:focus { outline: none; border-color: var(--accent); }

.scroll-sentinel { height: 1px; }
.load-more-hint {
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  padding: 8px 0 40px;
}

/* Kachel während der Verarbeitung */
.tile.pending {
  display: flex;
  align-items: center;
  justify-content: center;
}
.spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.tile.failed {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--danger);
  font-size: 24px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-dim);
  min-width: 0;
}
.crumb {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.crumb:hover { color: var(--text); background: var(--surface); }
.crumb-current { color: var(--text); font-weight: 500; cursor: default; }
.crumb-current:hover { background: none; }
.crumb-sep { color: var(--border); }

.folder-tile {
  position: relative;
  aspect-ratio: 1;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  overflow: hidden;
}
.folder-tile:hover { border-color: var(--text-dim); }

/* Leerer Ordner: zentriertes Icon + Name */
.folder-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px;
}
.folder-icon { font-size: 42px; line-height: 1; }
.folder-name {
  font-size: 13px;
  color: var(--text);
  text-align: center;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Ordner mit Inhalt: Mosaik-Vorschau */
.folder-mosaic {
  position: absolute;
  inset: 0;
  display: grid;
  gap: 2px;
  background: var(--border);
}
.folder-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.folder-mosaic.count-1 { grid-template-columns: 1fr; grid-template-rows: 1fr; }
.folder-mosaic.count-2 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }
.folder-mosaic.count-3,
.folder-mosaic.count-4 { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
/* Bei genau 3 Bildern das erste über die volle Höhe der linken Spalte ziehen */
.folder-mosaic.count-3 img:first-child { grid-row: span 2; }

.folder-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 16px 10px 8px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: #fff;
  font-size: 13px;
}
.folder-caption .fi { font-size: 14px; line-height: 1; }
.folder-caption-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.folder-actions {
  position: absolute;
  top: 8px;
  right: 8px;
  display: none;
  gap: 6px;
}
.folder-tile:hover .folder-actions { display: flex; }
.folder-actions button {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
}
.folder-actions button:hover { color: var(--text); border-color: var(--text-dim); }

.lb-move {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  max-width: 220px;
}

.upload-status {
  margin: 8px 18px 0;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------------- Gallery ---------------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  padding: 16px 18px 60px;
}
.tile {
  position: relative;
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface-2);
  cursor: pointer;
  border: 1px solid var(--border);
}
.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.25s ease;
}
.tile:hover img { transform: scale(1.05); }
.tile.no-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 30px;
}
.play-badge {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.play-badge span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  padding-left: 3px;
}
.duration {
  position: absolute;
  bottom: 6px;
  right: 6px;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---------------- Drag & Drop ---------------- */
.drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(15, 17, 21, 0.85);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  pointer-events: none;
}
.drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  color: var(--text);
  font-size: 18px;
  border: 2px dashed var(--accent);
  border-radius: 16px;
  padding: 60px 80px;
  background: rgba(75, 139, 245, 0.08);
}
.drop-icon { font-size: 40px; color: var(--accent); }

.empty {
  text-align: center;
  color: var(--text-dim);
  padding: 4rem 1rem;
}
.empty p { margin: 4px 0; }
.empty-sub { font-size: 14px; }

/* ---------------- Lightbox ---------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  flex-direction: column;
}
.lb-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 1rem 1rem;
  min-height: 0;
}
.lb-stage img,
.lb-stage video {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  background: #000;
}
.lb-close, .lb-nav {
  position: absolute;
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
  border: none;
  cursor: pointer;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lb-close:hover, .lb-nav:hover { background: rgba(255, 255, 255, 0.2); }
.lb-close { top: 14px; right: 16px; }
.lb-nav { top: 50%; transform: translateY(-50%); }
.lb-prev { left: 16px; }
.lb-next { right: 16px; }
.lb-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  background: rgba(0, 0, 0, 0.5);
  flex-wrap: wrap;
}
.lb-name { color: var(--text-dim); font-size: 14px; word-break: break-all; }
.lb-bar-actions { display: flex; gap: 10px; }

@media (max-width: 600px) {
  .btn-primary span { font-size: 0; }
  .btn-primary span::before { content: "＋"; font-size: 16px; }
  .lb-nav { width: 38px; height: 38px; }
}