:root{--bg: #f6f7f9;--panel: #ffffff;--panel-2: #f0f2f5;--border: #e2e5ea;--text: #1c2024;--muted: #6b7280;--accent: #2563eb;--accent-fg: #ffffff;--unread: #eef4ff;--danger: #dc2626;--shadow: 0 1px 3px rgba(0, 0, 0, .08);color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #16181d;--panel: #1e2127;--panel-2: #23262e;--border: #313640;--text: #e6e8eb;--muted: #9aa3b0;--accent: #4d82f3;--accent-fg: #ffffff;--unread: #202a3d;--danger: #f87171;--shadow: 0 1px 3px rgba(0, 0, 0, .4);color-scheme:dark}}*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px;color:var(--text);background:var(--bg)}button{font-family:inherit;font-size:inherit;cursor:pointer}a{color:var(--accent)}.login-wrap{height:100%;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:32px;width:100%;max-width:360px}.login-card h1{margin:0 0 4px;font-size:22px;font-weight:500}.login-card p.sub{margin:0 0 24px;color:var(--muted)}.field{margin-bottom:14px}.field label{display:block;margin-bottom:6px;color:var(--muted);font-size:13px}.field input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--panel-2);color:var(--text);font-size:14px}.field input:focus{outline:2px solid var(--accent);border-color:var(--accent)}.btn{border:1px solid var(--border);background:var(--panel-2);color:var(--text);border-radius:8px;padding:9px 14px}.btn:hover{background:var(--border)}.btn-primary{background:var(--accent);color:var(--accent-fg);border-color:var(--accent);width:100%;padding:11px;font-weight:500}.btn-primary:hover{filter:brightness(1.08);background:var(--accent)}.btn:disabled,.btn-primary:disabled{opacity:.55;cursor:default}.error{color:var(--danger);margin-top:12px;font-size:13px}.app-shell{display:flex;flex-direction:column;height:100%}.topbar{display:flex;align-items:center;gap:12px;padding:8px 16px;background:var(--panel);border-bottom:1px solid var(--border)}.topbar .brand{font-weight:600;font-size:15px}.topbar .spacer{flex:1}.topbar .user{color:var(--muted);font-size:13px}.push-dot{width:8px;height:8px;border-radius:50%;background:var(--muted);display:inline-block;margin-right:4px}.push-dot.live{background:#22c55e}.panes{display:flex;flex:1;min-height:0}.sidebar{width:220px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);overflow-y:auto;padding:8px}.list-pane{width:360px;flex-shrink:0;border-right:1px solid var(--border);background:var(--panel);overflow-y:auto;display:flex;flex-direction:column}.read-pane{flex:1;overflow-y:auto;background:var(--bg);min-width:0}.mbx{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;cursor:pointer;color:var(--text);-webkit-user-select:none;user-select:none}.mbx:hover{background:var(--panel-2)}.mbx.active{background:var(--accent);color:var(--accent-fg)}.mbx .name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mbx .count{font-size:12px;opacity:.8}.mbx .badge{font-size:12px;background:var(--accent);color:var(--accent-fg);border-radius:10px;padding:1px 7px;min-width:18px;text-align:center}.mbx.active .badge{background:#ffffff40}.list-toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--panel);z-index:1}.list-toolbar .title{font-weight:600;flex:1}.list-scroll{overflow-y:auto;flex:1}.msg{padding:10px 14px;border-bottom:1px solid var(--border);cursor:pointer}.msg:hover{background:var(--panel-2)}.msg.active{background:var(--unread);box-shadow:inset 3px 0 0 var(--accent)}.msg.unread .msg-from,.msg.unread .msg-subject{font-weight:700}.msg-line1{display:flex;gap:8px;align-items:baseline}.msg-from{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg-date{color:var(--muted);font-size:12px;flex-shrink:0}.msg-subject{margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg-preview{margin-top:2px;color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg .clip{color:var(--muted);font-size:12px}.pager{display:flex;align-items:center;justify-content:center;gap:12px;padding:10px;border-top:1px solid var(--border)}.read-empty{color:var(--muted);text-align:center;padding:64px 24px}.read-head{padding:16px 20px;border-bottom:1px solid var(--border);background:var(--panel)}.read-head h2{margin:0 0 10px;font-size:18px;font-weight:600}.read-meta{color:var(--muted);font-size:13px;line-height:1.6}.read-meta b{color:var(--text);font-weight:500}.read-actions{display:flex;gap:8px;margin-top:12px}.read-body{padding:20px;line-height:1.55}.read-body pre{white-space:pre-wrap;word-wrap:break-word;font-family:inherit;margin:0}.read-body-html{max-width:800px}.read-body-html img{max-width:100%;height:auto}.attachments{padding:12px 20px;border-top:1px solid var(--border)}.attachments h3{font-size:13px;margin:0 0 8px;color:var(--muted);font-weight:500}.att{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;margin:0 8px 8px 0;border:1px solid var(--border);border-radius:8px;background:var(--panel);color:var(--text);text-decoration:none;font-size:13px}.att:hover{background:var(--panel-2)}.att .sz{color:var(--muted);font-size:12px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;padding:16px;z-index:50}.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 40px #0000004d;width:100%;max-width:620px;max-height:90vh;display:flex;flex-direction:column}.modal-head{display:flex;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border)}.modal-head h2{margin:0;font-size:16px;font-weight:600;flex:1}.modal-body{padding:16px 18px;overflow-y:auto}.modal-body input,.modal-body textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;background:var(--panel-2);color:var(--text);font-size:14px;margin-bottom:10px}.modal-body textarea{min-height:220px;resize:vertical;font-family:inherit}.modal-foot{display:flex;gap:10px;justify-content:flex-end;padding:12px 18px;border-top:1px solid var(--border)}.spin{color:var(--muted);padding:24px;text-align:center}.icon-btn{background:none;border:none;color:var(--muted);font-size:18px;padding:4px 8px;border-radius:6px}.icon-btn:hover{background:var(--panel-2);color:var(--text)}@media(max-width:900px){.sidebar{width:160px}.list-pane{width:260px}}