*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--sd-font-sans, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  background:
    linear-gradient(180deg, rgba(88, 217, 130, 0.05), transparent 220px),
    var(--sd-bg, #f0f2f5);
  color: var(--sd-text, #222);
}

/* Auth */
.auth-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 44px);
  padding: 24px 16px 32px;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--sd-accent, #4a90e2) 10%, transparent), transparent 28%),
    linear-gradient(180deg, color-mix(in srgb, var(--sd-bg, #f0f2f5) 92%, #fff 8%), var(--sd-bg, #f0f2f5));
}
.auth-box {
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--sd-accent, #4a90e2) 9%, transparent), transparent 32%),
    var(--sd-panel, #fff);
  border: 1px solid var(--sd-border, transparent);
  border-radius: 22px;
  padding: 34px 30px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--sd-shadow-md, 0 2px 16px rgba(0,0,0,0.10));
}
.auth-box h1 { font-size: 1.7rem; margin-bottom: 10px; font-weight: 800; }
.auth-box p { color: var(--sd-text-soft, #666); margin-bottom: 22px; font-size: 0.92rem; line-height: 1.6; }
.auth-points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 22px; }
.auth-point {
  border: 1px solid var(--sd-border, transparent);
  border-radius: 16px;
  background: color-mix(in srgb, var(--sd-surface, #fff) 92%, transparent);
  padding: 12px;
  min-width: 0;
}
.auth-point strong { display: block; font-size: 0.82rem; margin-bottom: 4px; }
.auth-point span { display: block; color: var(--sd-text-soft, #666); font-size: 0.8rem; line-height: 1.45; }
.field { margin-bottom: 16px; }
.field label { display: block; color: var(--sd-text-soft, #666); font-size: 0.85rem; font-weight: 700; margin-bottom: 6px; }
.field input,
.field select,
.field textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--sd-border, #ddd); border-radius: var(--sd-radius-md, 8px); background: var(--sd-surface, #fff); color: var(--sd-text, #222); font-size: 0.95rem; }
.field input:focus { outline: none; border-color: var(--sd-accent, #4a90e2); box-shadow: var(--sd-focus, none); }
.btn-primary { width: 100%; padding: 11px; background: var(--sd-accent, #4a90e2); color: var(--sd-accent-ink, #fff); border: 1px solid color-mix(in srgb, var(--sd-accent, #4a90e2) 60%, transparent); border-radius: 999px; font-size: 1rem; cursor: pointer; font-weight: 700; }
.btn-primary:hover { background: var(--sd-accent-strong, #357abd); }
.error-msg { color: var(--sd-danger, #c0392b); font-size: 0.85rem; margin-top: 12px; }

/* App Layout */
.app-layout { display: flex; height: calc(100vh - 44px); overflow: hidden; padding: 14px; gap: 14px; }
.sidebar { width: 276px; background: var(--sd-bg-raised, #1e2430); color: var(--sd-text-soft, #cdd6f4); border: 1px solid var(--sd-border, #2e3548); border-radius: 22px; flex-shrink: 0; display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--sd-shadow-md, 0 2px 16px rgba(0,0,0,0.10)); }
.sidebar-scroll { flex: 1; overflow-y: auto; }
.sidebar-footer { border-top: 1px solid var(--sd-border, #2e3548); padding: 6px 0; flex-shrink: 0; }
.sidebar-header { padding: 20px 16px 12px; border-bottom: 1px solid var(--sd-border, #2e3548); }
.sidebar-header h2 { color: var(--sd-text, #fff); font-size: 1.1rem; }
.sidebar-header .user-info { color: var(--sd-text-muted, #888); font-size: 0.8rem; margin-top: 4px; }
.tree-section { padding: 12px 0; }
.tree-section-title { padding: 6px 16px; color: var(--sd-text-muted, #555); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; }
.tree-item { display: flex; align-items: center; gap: 8px; padding: 7px 16px 7px 24px; cursor: pointer; font-size: 0.88rem; border-radius: var(--sd-radius-sm, 6px); transition: background 0.1s, color 0.1s; user-select: none; }
.tree-item:hover, .tree-item.active { background: var(--sd-surface-2, #2e3548); color: var(--sd-text, #fff); }
.tree-item .icon { font-size: 1em; flex-shrink: 0; }
.nas-status { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-left: auto; }
.nas-status.online { background: var(--sd-accent, #4caf50); }
.nas-status.offline { background: var(--sd-danger, #f44336); }

/* Main content */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar { min-height: 56px; height: auto; padding: 12px 18px; border: 1px solid var(--sd-border, #2e3548); border-radius: 20px; background: var(--sd-panel, #fff); display: flex; align-items: center; justify-content: space-between; gap: 16px; box-shadow: var(--sd-shadow-sm, none); }
.topbar .path-display { min-width: 0; overflow: hidden; color: var(--sd-text-soft, #666); font-size: 0.85rem; text-overflow: ellipsis; white-space: nowrap; }
.topbar .actions { display: flex; gap: 8px; }
.btn { min-height: 34px; padding: 7px 14px; border: 1px solid var(--sd-border, #ddd); border-radius: var(--sd-radius-md, 7px); background: var(--sd-surface, #fff); color: var(--sd-text, #222); cursor: pointer; font-size: 0.85rem; font-weight: 700; }
.btn:hover { border-color: var(--sd-border-strong, #ccc); background: var(--sd-surface-2, #f5f5f5); }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-icon { width: 34px; padding: 7px 0; flex-shrink: 0; }
.btn.active { border-color: color-mix(in srgb, var(--sd-info, #4a90e2) 58%, transparent); background: color-mix(in srgb, var(--sd-info, #4a90e2) 15%, var(--sd-surface)); color: var(--sd-info, #1e6ab0); }
.btn-danger { border-color: color-mix(in srgb, var(--sd-danger, #e74c3c) 55%, transparent); color: var(--sd-danger, #e74c3c); }
.btn-danger:hover { background: color-mix(in srgb, var(--sd-danger, #e74c3c) 12%, transparent); }

.filter-bar { display: flex; gap: 8px; align-items: center; padding: 12px 0 8px; flex-wrap: wrap; }
.filter-bar #search-input { flex: 1 1 220px; min-width: 0; font-size: 0.85rem; }
.filter-bar #search-input:focus { outline: none; border-color: var(--sd-accent, #4a90e2); box-shadow: var(--sd-focus, none); }
.filter-bar select { font-size: 0.85rem; cursor: pointer; flex: 1 1 160px; min-width: 0; max-width: 100%; }
.filter-bar .sd-icon-button { flex: 0 0 auto; }
.status-banner { margin: 12px 0 0; padding: 10px 12px; border: 1px solid color-mix(in srgb, var(--sd-warn, #fed7aa) 42%, transparent); border-radius: var(--sd-radius-md, 7px); background: color-mix(in srgb, var(--sd-warn, #fff7ed) 14%, var(--sd-surface)); color: var(--sd-warn, #9a3412); font-size: 0.86rem; }
.breadcrumb { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; padding-top: 12px; color: var(--sd-text-soft, #666); font-size: 0.82rem; }
.breadcrumb button { border: 0; background: none; color: var(--sd-info, #1e6ab0); cursor: pointer; padding: 2px; font: inherit; font-weight: 700; }

/* File grid */
.file-area { flex: 1; overflow-y: auto; padding: 0 8px 20px; }
.file-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.file-card { border: 1px solid var(--sd-border, #e5e7eb); border-radius: var(--sd-radius-lg, 10px); padding: 14px 10px; text-align: center; cursor: pointer; transition: box-shadow 0.15s, border-color 0.15s, background 0.15s; position: relative; background: var(--sd-panel, #fff); color: var(--sd-text, #222); box-shadow: var(--sd-shadow-sm, none); }
.file-card:hover { border-color: var(--sd-border-strong, #4a90e2); background: var(--sd-surface, #fff); box-shadow: var(--sd-shadow-md, 0 2px 10px rgba(0,0,0,0.10)); }
.file-card.selected { border-color: var(--sd-info, #4a90e2); background: color-mix(in srgb, var(--sd-info, #4a90e2) 12%, var(--sd-panel)); }
.file-card .thumb { width: 80px; height: 80px; object-fit: cover; border-radius: var(--sd-radius-md, 6px); margin: 0 auto 8px; display: block; background: var(--sd-surface-2, #f0f2f5); }
.file-card .file-icon { font-size: 2.5rem; margin-bottom: 8px; }
.file-card .file-name { color: var(--sd-text, #333); font-size: 0.78rem; word-break: break-all; }
.file-card .file-size { color: var(--sd-text-muted, #999); font-size: 0.7rem; margin-top: 2px; }
.file-card .file-meta { color: var(--sd-text-muted, #999); font-size: 0.68rem; margin-top: 2px; }
.file-grid.list-view { display: block; }
.file-grid.list-view .file-card { display: grid; grid-template-columns: 34px 1fr auto auto; gap: 10px; align-items: center; text-align: left; min-height: 48px; margin-bottom: 8px; padding: 8px 12px 8px 34px; }
.file-grid.list-view .file-card .thumb { width: 30px; height: 30px; margin: 0; }
.file-grid.list-view .file-card .file-icon { font-size: 1.4rem; margin: 0; }
.file-grid.list-view .file-card .file-name { word-break: break-word; }
.file-grid.list-view .file-card .file-size, .file-grid.list-view .file-card .file-meta { white-space: nowrap; margin: 0; }

/* Context menu */
.ctx-menu { position: fixed; background: var(--sd-bg-raised, #fff); border: 1px solid var(--sd-border, #e5e7eb); border-radius: var(--sd-radius-md, 8px); box-shadow: var(--sd-shadow-md, 0 4px 16px rgba(0,0,0,0.12)); z-index: 1000; min-width: 160px; padding: 4px 0; color: var(--sd-text, #222); }
.ctx-menu-item { padding: 8px 16px; font-size: 0.87rem; cursor: pointer; }
.ctx-menu-item:hover { background: var(--sd-surface-2, #f5f5f5); }
.ctx-menu-item.danger { color: var(--sd-danger, #e74c3c); }

/* Lightbox */
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,0.9); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.lightbox img { max-width: 90vw; max-height: 90vh; object-fit: contain; border-radius: 4px; }
.lightbox-close { position: absolute; top: 16px; right: 20px; color: #fff; font-size: 2rem; cursor: pointer; }
.lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); color: #fff; font-size: 2.5rem; cursor: pointer; padding: 0 16px; user-select: none; }
.lightbox-nav.prev { left: 0; }
.lightbox-nav.next { right: 0; }

/* Upload drop */
.drop-overlay { position: fixed; inset: 0; background: color-mix(in srgb, var(--sd-info, #4a90e2) 18%, transparent); border: 3px dashed var(--sd-info, #4a90e2); z-index: 500; display: none; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--sd-info, #4a90e2); pointer-events: none; }
.drop-overlay.active { display: flex; }

/* Admin */
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.admin-table th, .admin-table td { padding: 10px 14px; border-bottom: 1px solid var(--sd-border, #e5e7eb); text-align: left; }
.admin-table th { background: var(--sd-surface, #f9fafb); color: var(--sd-text-soft, #444); font-weight: 700; }
.badge { display: inline-block; padding: 2px 8px; border-radius: var(--sd-radius-pill, 12px); font-size: 0.75rem; font-weight: 800; }
.badge-admin { background: color-mix(in srgb, var(--sd-warn, #fef3c7) 24%, transparent); color: var(--sd-warn, #92400e); }
.badge-user { background: color-mix(in srgb, var(--sd-info, #dbeafe) 20%, transparent); color: var(--sd-info, #1e40af); }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.52); z-index: 1500; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal { background: var(--sd-bg-raised, #fff); color: var(--sd-text, #222); border: 1px solid var(--sd-border-strong, transparent); border-radius: var(--sd-radius-xl, 12px); padding: 28px; width: 100%; max-width: 420px; box-shadow: var(--sd-shadow-md, 0 8px 32px rgba(0,0,0,0.15)); }
.modal.modal-wide { max-width: min(920px, calc(100vw - 32px)); max-height: calc(100vh - 32px); overflow: auto; }
.modal h3 { margin-bottom: 16px; font-size: 1.1rem; }
.modal .field { margin-bottom: 12px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }
.preview-frame { width: 100%; height: min(72vh, 720px); border: 1px solid var(--sd-border, #e5e7eb); border-radius: var(--sd-radius-md, 8px); background: var(--sd-surface, #f9fafb); }
.preview-text { white-space: pre-wrap; font-family: var(--sd-font-mono, ui-monospace, SFMono-Regular, Consolas, monospace); font-size: 0.82rem; background: var(--sd-surface, #f9fafb); border: 1px solid var(--sd-border, #e5e7eb); border-radius: var(--sd-radius-md, 8px); padding: 12px; max-height: 65vh; overflow: auto; }
.details-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.details-table th, .details-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--sd-border, #eee); vertical-align: top; }
.details-table th { width: 96px; color: var(--sd-text-soft, #666); font-weight: 700; }
.copy-link { word-break: break-all; background: var(--sd-surface, #f9fafb); border: 1px solid var(--sd-border, #e5e7eb); border-radius: var(--sd-radius-md, 7px); padding: 10px; margin-bottom: 10px; font-family: var(--sd-font-mono, ui-monospace, SFMono-Regular, Consolas, monospace); font-size: 0.8rem; }
.trash-list { display: grid; gap: 8px; }
.trash-item { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; align-items: center; padding: 8px; border: 1px solid var(--sd-border, #e5e7eb); border-radius: var(--sd-radius-md, 7px); background: var(--sd-panel, transparent); }
.trash-item small { display: block; color: var(--sd-text-muted, #777); margin-top: 2px; word-break: break-all; }

/* Upload-Fortschritt */
.upload-progress {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--sd-bg-raised, #fff); border: 1px solid var(--sd-border, transparent); border-radius: var(--sd-radius-lg, 10px); padding: 14px 20px;
  box-shadow: var(--sd-shadow-md, 0 4px 20px rgba(0,0,0,0.15)); z-index: 2100;
  min-width: 260px; text-align: center; font-size: 0.88rem; color: var(--sd-text-soft, #444);
}
.upload-progress-track {
  height: 6px; background: var(--sd-surface-2, #e5e7eb); border-radius: 3px; margin-top: 10px; overflow: hidden;
}
.upload-progress-fill {
  height: 100%; background: var(--sd-accent, #4a90e2); border-radius: 3px; transition: width 0.15s ease; width: 0%;
}

/* Selection toolbar */
.selection-toolbar { background: var(--sd-bg-raised, #1e2430); color: var(--sd-text, #fff); border: 1px solid var(--sd-border, transparent); border-radius: 16px; margin: 0 0 12px; padding: 10px 16px; display: flex; align-items: center; gap: 10px; font-size: 0.88rem; flex-shrink: 0; }
.selection-toolbar #selection-count { flex: 1; font-weight: 500; }

/* Per-card Checkbox */
.file-card .select-cb {
  position: absolute; top: 5px; left: 5px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--sd-bg-raised, rgba(255,255,255,0.95)); border: 2px solid var(--sd-border-strong, #bbb);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; cursor: pointer;
  opacity: 0; transition: opacity 0.15s; z-index: 10; flex-shrink: 0; color: #fff;
}
.file-card:hover .select-cb { opacity: 1; }
.file-card.selected .select-cb { opacity: 1; background: var(--sd-info, #4a90e2); border-color: var(--sd-info, #4a90e2); }
.file-grid.selection-mode .select-cb { opacity: 1; }

/* Share badge on folders */
.share-badge { position: absolute; top: 6px; right: 6px; font-size: 0.8rem; background: color-mix(in srgb, var(--sd-info, #dbeafe) 18%, var(--sd-surface)); border-radius: 50%; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; }

/* Mode badge in topbar */
.mode-badge { font-size: 0.75rem; padding: 2px 8px; border-radius: var(--sd-radius-pill, 10px); background: color-mix(in srgb, var(--sd-info, #e8f4fd) 15%, var(--sd-surface)); color: var(--sd-info, #1e6ab0); font-weight: 700; flex-shrink: 0; }
.mode-badge.mode-nas { background: color-mix(in srgb, var(--sd-warn, #fef3c7) 18%, var(--sd-surface)); color: var(--sd-warn, #92400e); }
.mode-badge.mode-share { background: color-mix(in srgb, var(--sd-accent, #dcfce7) 18%, var(--sd-surface)); color: var(--sd-accent-strong, #166534); }

/* My shares section header */
.shares-mine-title { padding: 4px 16px 2px; color: var(--sd-text-muted, #666); font-size: 0.7rem; font-style: italic; }
.shares-mine-item { display: flex; align-items: center; gap: 6px; padding: 5px 16px 5px 24px; color: var(--sd-text-muted, #aaa); font-size: 0.82rem; }
.shares-mine-item .delete-share { margin-left: auto; color: var(--sd-danger, #c0392b); cursor: pointer; font-size: 0.75rem; opacity: 0.6; padding: 2px 4px; }
.shares-mine-item .delete-share:hover { opacity: 1; }

/* Utility */
.hidden { display: none !important; }

/* Mobile sidebar toggle */
.btn-sidebar-toggle { display: none; font-size: 1.2rem; padding: 6px 10px; cursor: pointer; flex-shrink: 0; }

.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.48); z-index: 790; }

@media (max-width: 768px) {
  .btn-sidebar-toggle { display: flex; align-items: center; }

  .sidebar {
    position: fixed;
    top: 46px; left: -260px; bottom: 0;
    z-index: 800;
    transition: left 0.25s ease;
    width: 260px;
  }

  .sidebar.open {
    left: 0;
  }

  .sidebar-overlay.open {
    display: block;
  }

  .sidebar-overlay {
    top: 46px;
  }

  .app-layout { flex-direction: column; padding: 10px; }

  .main-content { height: calc(100vh - 46px); }

  .topbar,
  .selection-toolbar,
  .file-area {
    padding-inline: 12px;
  }

  .topbar {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
  }

  .topbar .actions {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .filter-bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .filter-bar #search-input {
    flex-basis: 100%;
    grid-column: 1 / -1;
  }

  .filter-bar select,
  .filter-bar .sd-icon-button {
    width: 100%;
  }

  .selection-toolbar {
    overflow-x: auto;
  }

  .trash-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .app-layout { height: calc(100vh - 46px); }
  .auth-wrap { min-height: calc(100vh - 46px); }
}