:root,[data-theme=light]{--bg-app: #f5f6f8;--bg-surface: #ffffff;--bg-surface-muted: #f8fafc;--bg-sidebar: #111827;--text-primary: #1f2430;--text-muted: #64748b;--text-sidebar: #cbd5e1;--border-color: #d0d5dd;--border-color-soft: #eef0f3;--accent: #2563eb;--accent-contrast: #ffffff;--danger-bg: #fee2e2;--danger-text: #b91c1c;--shadow: rgba(0, 0, 0, .06);--shadow-strong: rgba(0, 0, 0, .25)}[data-theme=dark]{--bg-app: #0f172a;--bg-surface: #1e293b;--bg-surface-muted: #273449;--bg-sidebar: #020617;--text-primary: #e2e8f0;--text-muted: #94a3b8;--text-sidebar: #cbd5e1;--border-color: #334155;--border-color-soft: #2b3a52;--accent: #3b82f6;--accent-contrast: #ffffff;--danger-bg: #4c1d1d;--danger-text: #fca5a5;--shadow: rgba(0, 0, 0, .35);--shadow-strong: rgba(0, 0, 0, .6)}[data-theme=ocean]{--bg-app: #eaf4fb;--bg-surface: #ffffff;--bg-surface-muted: #eaf4fb;--bg-sidebar: #0c4a6e;--text-primary: #0c2233;--text-muted: #4b6a7d;--text-sidebar: #bae6fd;--border-color: #bcdff4;--border-color-soft: #d9edf9;--accent: #0284c7;--accent-contrast: #ffffff;--danger-bg: #fee2e2;--danger-text: #b91c1c;--shadow: rgba(2, 132, 199, .12);--shadow-strong: rgba(2, 132, 199, .3)}[data-theme=forest]{--bg-app: #f0f6f0;--bg-surface: #ffffff;--bg-surface-muted: #eaf3ea;--bg-sidebar: #14532d;--text-primary: #1a2e1f;--text-muted: #52705a;--text-sidebar: #bbf7d0;--border-color: #c6e6cc;--border-color-soft: #e2f0e4;--accent: #16a34a;--accent-contrast: #ffffff;--danger-bg: #fee2e2;--danger-text: #b91c1c;--shadow: rgba(22, 163, 74, .12);--shadow-strong: rgba(22, 163, 74, .3)}[data-theme=contrast]{--bg-app: #000000;--bg-surface: #000000;--bg-surface-muted: #111111;--bg-sidebar: #000000;--text-primary: #ffffff;--text-muted: #eeee00;--text-sidebar: #ffffff;--border-color: #ffffff;--border-color-soft: #444444;--accent: #ffee00;--accent-contrast: #000000;--danger-bg: #3a0000;--danger-text: #ff6b6b;--shadow: rgba(255, 255, 255, .15);--shadow-strong: rgba(255, 255, 255, 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var(--border-color);border-radius:12px;padding:8px;background:var(--bg-surface-muted)}.logo-preview-empty{display:flex;align-items:center;justify-content:center;font-size:32px}.file-label{cursor:pointer;display:inline-block;margin-inline-end:8px}.avatar-preview{width:84px;height:84px;object-fit:cover;border-radius:50%;border:1px solid var(--border-color);background:var(--bg-surface-muted)}.avatar-preview-empty{display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;background:var(--accent);color:#fff}.attachment-picker-list{list-style:none;padding:0;margin:4px 0 0;display:flex;flex-direction:column;gap:6px}.attachment-picker-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:6px 10px;border:1px solid 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