:root{--bg: #ffffff;--bg-soft: #f6f8fa;--bg-hover: #f1f3f5;--bg-selected: #e8f0fe;--fg: #202124;--fg-muted: #5f6368;--fg-subtle: #80868b;--border: #e8eaed;--accent: #1a73e8;--accent-fg: #ffffff;--danger: #d93025;--warn: #f29900;--success: #1e8e3e;--shadow: 0 1px 2px rgba(60, 64, 67, .1), 0 2px 6px rgba(60, 64, 67, .08);--radius: 8px}@media (prefers-color-scheme: dark){:root{--bg: #1f1f1f;--bg-soft: #181818;--bg-hover: #2a2a2a;--bg-selected: #1f3a5f;--fg: #e8eaed;--fg-muted: #bdc1c6;--fg-subtle: #9aa0a6;--border: #3c4043;--accent: #8ab4f8;--accent-fg: #1a1a1a}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;color:var(--fg);background:var(--bg);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}.app{display:grid;grid-template-columns:240px 1fr;grid-template-rows:56px 1fr;grid-template-areas:"topbar topbar" "sidebar main";height:100vh}.topbar{grid-area:topbar;display:flex;align-items:center;gap:16px;padding:0 16px;border-bottom:1px solid var(--border);background:var(--bg)}.topbar .logo{font-weight:600;font-size:18px}.topbar .spacer{flex:1}.topbar .me{color:var(--fg-muted)}.topbar .signout{background:transparent;border:1px solid var(--border);padding:6px 12px;border-radius:var(--radius);color:var(--fg)}.topbar .signout:hover{background:var(--bg-hover)}.sidebar{grid-area:sidebar;border-right:1px solid var(--border);padding:16px 8px;background:var(--bg-soft);display:flex;flex-direction:column;gap:4px}.sidebar .compose{margin:4px 8px 16px;background:var(--accent);color:var(--accent-fg);border:none;padding:12px 16px;border-radius:24px;font-weight:500;box-shadow:var(--shadow);text-align:center}.sidebar .compose:hover{filter:brightness(1.05)}.sidebar a{padding:8px 16px;border-radius:0 999px 999px 0;display:flex;align-items:center;gap:12px;color:var(--fg)}.sidebar a:hover{background:var(--bg-hover)}.sidebar a.active{background:var(--bg-selected);font-weight:600}.sidebar .group{margin-top:16px;padding:0 16px;color:var(--fg-subtle);font-size:12px;text-transform:uppercase}.main{grid-area:main;display:grid;grid-template-columns:minmax(360px,1fr) 2fr;height:100%;overflow:hidden}.thread-list,.reading-pane{overflow-y:auto}.thread-list{border-right:1px solid var(--border)}.thread-row{padding:10px 16px;border-bottom:1px solid var(--border);display:grid;grid-template-columns:auto 1fr auto;gap:8px;cursor:pointer}.thread-row:hover{background:var(--bg-hover)}.thread-row.selected{background:var(--bg-selected)}.thread-row.unread{font-weight:600}.thread-row .from,.thread-row .subject{color:var(--fg)}.thread-row .snippet{color:var(--fg-muted);font-weight:400}.thread-row .time{color:var(--fg-muted);font-size:12px;white-space:nowrap}.thread-row .row-2{grid-column:2 / 3;color:var(--fg-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reading-pane{padding:24px 32px}.reading-pane .empty{color:var(--fg-muted);padding-top:64px;text-align:center}.reading-pane h1{font-size:20px;margin:0 0 16px}.message-card{border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}.message-card .meta{display:flex;gap:12px;align-items:baseline;border-bottom:1px solid var(--border);padding-bottom:8px;margin-bottom:12px}.message-card .meta .from{font-weight:600}.message-card .meta .to{color:var(--fg-muted);font-size:12px}.message-card .meta .time{margin-left:auto;color:var(--fg-muted);font-size:12px}.message-card .body{white-space:pre-wrap;word-wrap:break-word}.message-card .body iframe{width:100%;border:0;min-height:200px}.attachments{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}.attachments a{padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius)}.thread-actions{display:flex;gap:8px;margin-bottom:12px}.btn{background:var(--bg);color:var(--fg);border:1px solid var(--border);padding:6px 12px;border-radius:var(--radius)}.btn:hover{background:var(--bg-hover)}.btn.primary{background:var(--accent);color:var(--accent-fg);border-color:transparent}.btn.primary:hover{filter:brightness(1.05);background:var(--accent)}.btn.danger{color:var(--danger)}.compose-overlay{position:fixed;right:24px;bottom:0;width:540px;max-width:calc(100vw - 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