:root{--bg: #fbfbfa;--panel: #ffffff;--panel-2: #f5f5f4;--border: #e4e4e2;--border-strong: #d3d3d0;--text: #1c1c1a;--muted: #6f6f6a;--faint: #9a9a94;--accent: #1a6dd4;--accent-soft: #e8f1fd;--warn: #a15c00;--warn-soft: #fdf3e0;--danger: #b3261e;--danger-soft: #fdecea;--ok: #1a7f4b;--radius: 8px;--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #141414;--panel: #1c1c1c;--panel-2: #232323;--border: #2e2e2e;--border-strong: #3d3d3d;--text: #ececea;--muted: #a0a09a;--faint: #6f6f6a;--accent: #5fa3f5;--accent-soft: #16273c;--warn: #e0a355;--warn-soft: #2e2413;--danger: #f2837b;--danger-soft: #331a18;--ok: #58c98c;color-scheme:dark}}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button{font:inherit;cursor:pointer}input,textarea{font:inherit;color:inherit}a{color:var(--accent)}.never-delivers{background:var(--warn-soft);border-bottom:1px solid var(--border);color:var(--warn);padding:7px 16px;font-size:12.5px;text-align:center;font-weight:550}.verify-banner{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;background:var(--accent-soft);color:var(--accent);border-bottom:1px solid var(--border);padding:8px 16px;font-size:13px}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;gap:14px;padding:0 16px;height:52px;border-bottom:1px solid var(--border);background:var(--panel);flex-shrink:0}.brand{font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:7px}.brand small{font-weight:500;color:var(--faint);font-size:11px;letter-spacing:.02em}.spacer{flex:1}.panes{display:flex;flex:1;min-height:0}.pane{display:flex;flex-direction:column;min-height:0;border-right:1px solid var(--border);background:var(--panel)}.pane-messages{width:400px;flex-shrink:0}.pane-reader{flex:1;border-right:none;background:var(--bg)}.pane-header{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border);font-weight:650;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);flex-shrink:0;min-height:41px}.pane-body{overflow-y:auto;flex:1}.btn{border:1px solid var(--border-strong);background:var(--panel);color:var(--text);padding:6px 11px;border-radius:6px;font-size:13px;font-weight:550;white-space:nowrap;transition:background .12s,border-color .12s}.btn:hover:not(:disabled){background:var(--panel-2)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){filter:brightness(1.08);background:var(--accent)}.btn-danger{color:var(--danger);border-color:var(--border-strong)}.btn-danger:hover:not(:disabled){background:var(--danger-soft)}.btn-sm{padding:3px 8px;font-size:12px}.btn-ghost{border-color:transparent;background:transparent;color:var(--muted)}.btn-ghost:hover:not(:disabled){background:var(--panel-2);color:var(--text)}.inbox-bar{gap:6px;padding:8px 10px;text-transform:none;letter-spacing:normal}.inbox-switcher{position:relative;min-width:0}.inbox-trigger{display:flex;align-items:center;gap:6px;max-width:190px;border:1px solid transparent;background:transparent;color:var(--text);padding:4px 8px;border-radius:6px;font-size:13.5px;font-weight:680;letter-spacing:-.01em}.inbox-trigger:hover:not(:disabled){background:var(--panel-2);border-color:var(--border)}.inbox-trigger:disabled{color:var(--faint);cursor:default}.inbox-trigger-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.caret{color:var(--faint);font-size:12px;flex-shrink:0}.menu-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40}.menu{position:absolute;top:calc(100% + 5px);left:0;z-index:41;min-width:260px;max-width:320px;max-height:60vh;overflow-y:auto;background:var(--panel);border:1px solid var(--border-strong);border-radius:var(--radius);box-shadow:0 10px 28px #0000002e;padding:4px}.menu-item{display:block;width:100%;text-align:left;border:none;border-radius:6px;background:transparent;color:inherit;padding:7px 9px}.menu-item:hover{background:var(--panel-2)}.menu-item.active{background:var(--accent-soft)}.menu-sep{height:1px;margin:4px 3px;background:var(--border)}.menu-action{display:block;width:100%;text-align:left;border:none;border-radius:6px;background:transparent;color:var(--accent);font-weight:600;padding:7px 9px}.menu-action:hover:not(:disabled){background:var(--panel-2)}.menu-action:disabled{color:var(--faint);cursor:default}.menu-footer{padding:8px 9px;margin-top:4px;border-top:1px solid var(--border);color:var(--warn);font-size:12px;line-height:1.45}.message-item{display:block;width:100%;text-align:left;padding:10px 12px;border:none;border-bottom:1px solid var(--border);background:transparent;color:inherit}.message-item:hover{background:var(--panel-2)}.message-item.active{background:var(--accent-soft);box-shadow:inset 2px 0 0 var(--accent)}.inbox-name{font-weight:600;display:flex;align-items:center;gap:6px}.inbox-meta{color:var(--faint);font-size:12px;margin-top:2px}.badge{background:var(--accent);color:#fff;border-radius:999px;padding:1px 7px;font-size:11px;font-weight:700;margin-left:auto}.message-row{display:flex;align-items:baseline;gap:8px}.message-from{font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-time{color:var(--faint);font-size:11.5px;flex-shrink:0}.message-subject{margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-preview{color:var(--muted);font-size:12.5px;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-item.unread .message-from:before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:6px;vertical-align:middle}.message-item:not(.unread) .message-subject{color:var(--muted)}.search-row{padding:8px 10px;border-bottom:1px solid var(--border);flex-shrink:0}.search-input{width:100%;padding:6px 10px;font-size:13px;border:1px solid var(--border-strong);border-radius:6px;background:var(--bg)}.search-input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}.reader-header{padding:16px 20px;border-bottom:1px solid var(--border);background:var(--panel)}.reader-subject{font-size:17px;font-weight:680;margin:0 0 8px;line-height:1.35}.reader-line{color:var(--muted);font-size:12.5px;margin-top:3px}.reader-line b{color:var(--text);font-weight:600}.tabs{display:flex;gap:2px;padding:8px 20px 0;border-bottom:1px solid var(--border);background:var(--panel)}.tab{border:none;background:transparent;color:var(--muted);padding:7px 12px;border-bottom:2px solid transparent;font-weight:600;font-size:13px}.tab.active{color:var(--text);border-bottom-color:var(--accent)}.reader-body{flex:1;overflow:auto;min-height:0}.reader-body iframe{width:100%;height:100%;border:none;background:#fff}.reader-plain{padding:20px;white-space:pre-wrap;font-family:var(--mono);font-size:13px;line-height:1.6}.notice{padding:9px 12px;border-radius:var(--radius);font-size:12.5px;border:1px solid var(--border);background:var(--panel-2);color:var(--muted)}.notice-retention{background:var(--warn-soft);border-color:transparent;color:var(--warn)}.notice-error{background:var(--danger-soft);border-color:transparent;color:var(--danger)}.notice-ok{background:var(--accent-soft);border-color:transparent;color:var(--accent)}.empty{padding:48px 24px;text-align:center;color:var(--faint)}.empty h3{color:var(--muted);font-size:14px;margin:0 0 6px}.empty p{margin:0 auto;max-width:320px;line-height:1.55;font-size:13px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;padding:24px;z-index:50}.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;width:100%;max-width:560px;max-height:85vh;overflow-y:auto;box-shadow:0 16px 48px #00000038}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-header h2{margin:0;font-size:15px;font-weight:680}.modal-body{padding:20px;display:flex;flex-direction:column;gap:16px}.modal-tabs{margin:-20px -20px 0;padding-top:0}.field{display:flex;flex-direction:column;gap:5px}.field label{font-size:12px;font-weight:650;color:var(--muted)}.field input,.field select{padding:8px 10px;border:1px solid var(--border-strong);border-radius:6px;background:var(--bg)}.field select{font:inherit;color:inherit}.field input:focus,.field select:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}.field-hint{font-size:12px;color:var(--faint)}.row{display:flex;gap:8px;align-items:center}.codeblock{position:relative;background:var(--panel-2);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px;font-family:var(--mono);font-size:12.5px;line-height:1.65;white-space:pre;overflow-x:auto}.copy-btn{position:absolute;top:8px;right:8px}.kv{display:grid;grid-template-columns:130px 1fr;gap:6px 12px;font-size:13px;align-items:baseline}.kv dt{color:var(--muted);font-weight:600}.kv dd{margin:0;font-family:var(--mono);font-size:12.5px;word-break:break-all}.meter{height:5px;background:var(--panel-2);border-radius:999px;overflow:hidden}.meter-fill{height:100%;background:var(--accent);transition:width .3s}.meter-fill.warn{background:var(--warn)}.meter-fill.full{background:var(--danger)}.usage-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.usage-card{border:1px solid var(--border);border-radius:var(--radius);padding:12px}.usage-card h4{margin:0 0 6px;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.usage-value{font-size:20px;font-weight:700;margin-bottom:8px}.usage-value small{font-size:13px;font-weight:500;color:var(--faint)}.auth-wrap{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 34px);padding:24px}.auth-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:28px;display:flex;flex-direction:column;gap:16px}.auth-card h1{margin:0;font-size:19px;letter-spacing:-.01em}.auth-card .sub{color:var(--muted);font-size:13px;margin:-8px 0 0;line-height:1.5}.auth-switch{text-align:center;font-size:13px;color:var(--muted)}.linkbtn{background:none;border:none;color:var(--accent);padding:0;font-weight:600}.status-dot{width:7px;height:7px;border-radius:50%;display:inline-block}.status-dot.live{background:var(--ok)}.status-dot.connecting{background:var(--warn)}.status-dot.offline{background:var(--faint)}.chip{font-size:11px;padding:1px 7px;border-radius:999px;background:var(--panel-2);color:var(--muted);font-weight:600;border:1px solid var(--border)}@media(max-width:900px){.pane-messages{width:320px}.inbox-trigger{max-width:130px}}