:root{--bg-primary:#0f1117;--bg-secondary:#1a1d27;--bg-tertiary:#242836;--bg-hover:#2a2e3d;--bg-selected:#2d3348;--border:#2e3347;--border-light:#383d52;--text-primary:#e8eaf0;--text-secondary:#9ba3b5;--text-muted:#6b7280;--accent:#6c5ce7;--accent-hover:#7c6ff0;--accent-subtle:#6c5ce71f;--success:#2ed573;--danger:#ff4757;--warning:#ffa502;--blue:#3b82f6;--unread:#fff;--read:#9ba3b5;--sidebar-width:220px;--folder-panel-width:220px;--list-panel-width:380px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}#root{height:100vh}input,textarea,select,button{font-family:inherit;font-size:inherit}input,textarea,select{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-primary);border-radius:6px;outline:none;padding:8px 12px;transition:border-color .2s}input:focus,textarea:focus,select:focus{border-color:var(--accent)}button{cursor:pointer;border:none;border-radius:6px;transition:all .15s}.btn-primary{background:var(--accent);color:#fff;padding:8px 16px;font-weight:500}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border);padding:8px 16px}.btn-secondary:hover{background:var(--bg-hover)}.btn-icon{color:var(--text-secondary);background:0 0;border-radius:6px;justify-content:center;align-items:center;padding:6px;display:flex}.btn-icon:hover{background:var(--bg-hover);color:var(--text-primary)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-light)}.login-page{background:var(--bg-primary);justify-content:center;align-items:center;height:100vh;display:flex}.login-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;width:400px;max-width:90vw;padding:40px}.login-card h1{margin-bottom:4px;font-size:1.5rem}.login-card .subtitle{color:var(--text-muted);margin-bottom:24px;font-size:.85rem}.login-card .form-group{margin-bottom:16px}.login-card label{color:var(--text-secondary);margin-bottom:6px;font-size:.8rem;display:block}.login-card input{width:100%}.login-card .error{color:var(--danger);margin-bottom:12px;font-size:.8rem}.app-layout{height:100vh;display:flex}.folder-sidebar{width:var(--folder-panel-width);background:var(--bg-secondary);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex}.folder-header{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:16px;display:flex}.folder-header img{width:100px}.folder-header .title{color:var(--text-muted);margin-top:2px;font-size:.75rem}.compose-btn{background:var(--accent);color:#fff;text-align:center;border-radius:8px;margin:12px 12px 8px;padding:10px;font-size:.85rem;font-weight:600}.compose-btn:hover{background:var(--accent-hover)}.folder-list{flex:1;padding:4px 0;overflow-y:auto}.folder-item{cursor:pointer;color:var(--text-secondary);border-left:3px solid #0000;align-items:center;gap:10px;padding:8px 16px;font-size:.85rem;transition:all .1s;display:flex}.folder-item:hover{background:var(--bg-hover);color:var(--text-primary)}.folder-item.active{background:var(--accent-subtle);color:var(--accent);border-left-color:var(--accent)}.folder-item .icon{text-align:center;flex-shrink:0;width:20px;font-size:1rem}.folder-item .name{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.folder-item .badge{background:var(--accent);color:#fff;text-align:center;border-radius:10px;min-width:18px;padding:1px 6px;font-size:.7rem;font-weight:600}.folder-section{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;padding:12px 16px 4px;font-size:.7rem;font-weight:600}.folder-footer{border-top:1px solid var(--border);padding:12px}.folder-user{border-radius:8px;align-items:center;gap:10px;padding:6px 8px;display:flex}.folder-user .avatar{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:.8rem;font-weight:600;display:flex}.folder-user .info{flex:1;min-width:0}.folder-user .email{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:.75rem;overflow:hidden}.footer-actions{gap:4px;margin-top:8px;display:flex}.footer-actions button{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border);border-radius:6px;flex:1;padding:6px;font-size:.75rem}.footer-actions button:hover{color:var(--text-primary);background:var(--bg-hover)}.message-list-panel{width:var(--list-panel-width);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;display:flex}.list-header{border-bottom:1px solid var(--border);align-items:center;gap:12px;padding:12px 16px;display:flex}.list-header h2{flex:1;font-size:1rem;font-weight:600}.list-header .count{color:var(--text-muted);font-size:.75rem}.search-bar{border-bottom:1px solid var(--border);padding:8px 12px}.search-bar input{background:var(--bg-tertiary);border-radius:8px;width:100%;padding:7px 12px;font-size:.8rem}.message-list{flex:1;overflow-y:auto}.message-item{border-bottom:1px solid var(--border);cursor:pointer;padding:12px 16px;transition:background .1s}.message-item:hover{background:var(--bg-hover)}.message-item.active{background:var(--bg-selected);border-left:3px solid var(--accent)}.message-item.unread{border-left:3px solid var(--accent);background:#6c5ce70f}.message-item .msg-from{color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;margin-bottom:2px;font-size:.8rem;font-weight:500;overflow:hidden}.message-item.unread .msg-from{color:#fff;font-weight:700}.message-item .msg-subject{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;margin-bottom:2px;font-size:.8rem;overflow:hidden}.message-item.unread .msg-subject{color:var(--text-primary);font-weight:600}.message-item .msg-meta{color:var(--text-muted);justify-content:space-between;font-size:.7rem;display:flex}.message-item .msg-meta .att{color:var(--text-secondary)}.list-pagination{border-top:1px solid var(--border);color:var(--text-muted);justify-content:center;align-items:center;gap:12px;padding:8px 16px;font-size:.8rem;display:flex}.list-pagination button{padding:4px 12px;font-size:.75rem}.reading-pane{flex-direction:column;flex:1;display:flex;overflow:hidden}.reading-empty{color:var(--text-muted);flex:1;justify-content:center;align-items:center;font-size:.9rem;display:flex}.reading-header{border-bottom:1px solid var(--border);padding:20px 24px}.reading-header h2{margin-bottom:12px;font-size:1.2rem;font-weight:600;line-height:1.4}.reading-meta{align-items:flex-start;gap:16px;font-size:.8rem;display:flex}.reading-meta .sender-avatar{background:var(--accent);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-size:1rem;font-weight:600;display:flex}.reading-meta .sender-info{flex:1}.reading-meta .sender-name{color:var(--text-primary);font-weight:600}.reading-meta .sender-email{color:var(--text-secondary)}.reading-meta .recipients{color:var(--text-muted);margin-top:4px;font-size:.75rem}.reading-meta .date{color:var(--text-muted);white-space:nowrap;font-size:.75rem}.reading-actions{border-bottom:1px solid var(--border);gap:4px;padding:8px 24px;display:flex}.reading-actions button{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border);border-radius:6px;align-items:center;gap:6px;padding:6px 14px;font-size:.8rem;display:flex}.reading-actions button:hover{color:var(--text-primary);background:var(--bg-hover)}.reading-body{flex:1;padding:24px;overflow-y:auto}.reading-body iframe{border:none;border-radius:8px;width:100%;min-height:300px}.reading-body .text-body{white-space:pre-wrap;color:var(--text-primary);font-size:.875rem;line-height:1.6}.attachments-bar{border-top:1px solid var(--border);flex-wrap:wrap;gap:8px;padding:12px 24px;display:flex}.attachment-chip{background:var(--bg-tertiary);border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:6px 12px;font-size:.8rem;text-decoration:none;display:flex}.attachment-chip:hover{background:var(--bg-hover);color:var(--text-primary)}.attachment-chip .att-icon{font-size:1rem}.attachment-chip .att-size{color:var(--text-muted);font-size:.7rem}.compose-overlay{z-index:100;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.compose-modal{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;flex-direction:column;width:700px;max-width:95vw;max-height:90vh;display:flex}.compose-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.compose-header h3{font-size:1rem}.compose-fields{border-bottom:1px solid var(--border);padding:12px 20px}.compose-field{align-items:center;gap:8px;margin-bottom:8px;display:flex}.compose-field label{color:var(--text-muted);flex-shrink:0;width:60px;font-size:.8rem}.compose-field input{color:var(--text-primary);background:0 0;border:none;flex:1;padding:6px 0;font-size:.85rem}.compose-field input:focus{outline:none}.compose-body{flex:1;min-height:250px}.compose-body textarea{width:100%;height:100%;min-height:250px;color:var(--text-primary);resize:none;background:0 0;border:none;padding:16px 20px;font-size:.85rem;line-height:1.6}.compose-body textarea:focus{outline:none}.compose-footer{border-top:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.admin-link{color:var(--accent);background:var(--accent-subtle);border-radius:6px;align-items:center;gap:6px;padding:6px 10px;font-size:.75rem;text-decoration:none;transition:all .15s;display:flex}.admin-link:hover{background:#6c5ce733}.loading-spinner{color:var(--text-muted);justify-content:center;align-items:center;padding:40px;font-size:.85rem;display:flex}