:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--bg: #f4f7f7;--surface: #ffffff;--surface-2: #eef4f4;--ink: #11181c;--muted: #66737a;--line: #dce5e7;--line-strong: #bdccd0;--cyan: #00a8c8;--cyan-strong: #007f96;--ink-blue: #13232e;--success: #0a7d4f;--danger: #b42318;--shadow: 0 18px 50px rgba(19, 35, 46, .08)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(180deg,#ffffffb3,#f4f7f7fa),radial-gradient(circle at top left,rgba(0,168,200,.08),transparent 34%),var(--bg);color:var(--ink)}button,input,select{font:inherit}button{cursor:pointer}.boot-screen,.login-shell{min-height:100vh;display:grid;place-items:center;padding:32px}.boot-screen{gap:18px;align-content:center}.brand-orb,.brand-mark{display:grid;place-items:center;color:#fff;background:#10212b;border-radius:8px}.brand-orb{width:58px;height:58px}.brand-mark{width:38px;height:38px;flex:0 0 auto}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-shell{grid-template-columns:minmax(320px,470px) minmax(320px,460px);gap:18px;align-items:stretch}.login-panel,.admin-panel,.message-list,.message-preview{background:#ffffffe6;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:8px}.login-panel{padding:28px;display:flex;flex-direction:column;justify-content:space-between}.brand-row{display:flex;align-items:center;gap:12px}.brand-row strong{display:block;font-size:15px;line-height:1.1}.brand-row span{color:var(--muted);display:block;font-size:12px;margin-top:4px}.brand-row.large strong{font-size:18px}.login-form{display:grid;gap:16px;margin-top:62px}.login-form h1{font-size:clamp(30px,4vw,48px);line-height:1;letter-spacing:0;max-width:360px;margin:0 0 6px}label{display:grid;gap:7px;color:#314049;font-size:12px;font-weight:700}input,select{width:100%;height:42px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:7px;padding:0 12px;outline:none}input:focus,select:focus{border-color:var(--cyan);box-shadow:0 0 0 3px #00a8c824}.primary-button,.ghost-button,.icon-button,.preview-actions button,.credential-box button{border:0;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;border-radius:7px;font-size:13px;font-weight:800}.primary-button{color:#fff;background:#10212b;padding:0 16px}.primary-button:hover{background:#172f3d}.primary-button:disabled{opacity:.54;cursor:not-allowed}.command-button{min-height:42px;border:0;border-radius:7px;padding:0 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svg{width:132px;height:132px}.credential-box>div:not(.qr-card){display:grid;grid-template-columns:1fr auto;gap:4px 8px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:8px;background:#f8fbfb}.credential-box>div:not(.qr-card) span{grid-column:1 / -1;color:var(--muted);font-size:11px;font-weight:800}.credential-box strong{overflow-wrap:anywhere;font-size:13px}.credential-box button{width:30px;min-height:30px;color:var(--ink-blue);background:#e7f5f7}.copy-all-button{width:100%!important;min-height:38px!important;border:0;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;gap:8px;color:#062a34!important;background:#24c4e6!important;font-weight:900}.app-shell{min-height:100vh;display:grid;grid-template-columns:276px minmax(0,1fr)}.sidebar{background:#0f1d25;color:#eef8fa;padding:22px;display:flex;flex-direction:column;gap:22px}.sidebar .brand-mark{background:#ffffff1f}.sidebar .brand-row span,.sidebar .section-label,.security-strip span{color:#eef8faa8}.domain-switch{height:42px;width:100%;border:1px solid rgba(255,255,255,.14);color:#fff;background:#ffffff14;border-radius:7px;display:flex;align-items:center;justify-content:space-between;padding:0 12px}.create-inbox-button{height:38px;border:1px solid rgba(0,168,200,.32);color:#e8fbff;background:#00a8c81f;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:800}.create-inbox-button:hover{background:#00a8c82e}.side-section{display:grid;gap:10px}.section-label{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:800}.mailbox-stack{display:grid;gap:7px}.mailbox-pill{border:1px solid transparent;color:#eef8fac2;background:transparent;border-radius:7px;min-height:38px;padding:0 9px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;text-align:left}.mailbox-pill.active{color:#fff;border-color:#00a8c861;background:#00a8c821}.mailbox-dot{width:7px;height:7px;background:var(--cyan);border-radius:50%}.mailbox-address{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:700}.count{min-width:22px;height:22px;border-radius:7px;display:grid;place-items:center;background:#e7fbff;color:#063641;font-size:11px;font-weight:900}.security-strip{margin-top:auto;display:flex;gap:10px;padding:12px;border:1px solid rgba(255,255,255,.14);border-radius:8px;background:#ffffff0f}.security-strip strong,.security-strip span{display:block;font-size:12px;line-height:1.35}.ghost-button.logout{width:100%;color:#e8f7fa;background:#ffffff14}.workspace{min-width:0;display:grid;grid-template-rows:auto minmax(0,1fr);gap:16px;padding:18px}.topbar{min-height:64px;gap:12px;background:#ffffffb8;border:1px solid var(--line);border-radius:8px;padding:10px 12px 10px 18px}.topbar 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var(--cyan)}.message-row-top,.subject-line{display:flex;align-items:center;gap:8px}.message-row-top{justify-content:space-between}.message-row-top strong,.subject-line{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-row-top strong{font-size:13px}.message-row-top span{color:var(--muted);font-size:11px;flex:0 0 auto}.subject-line{margin-top:8px;font-size:13px;font-weight:800}.message-row p{color:var(--muted);font-size:12px;line-height:1.42;margin:7px 0 0;display:-webkit-box;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical}.empty-inbox,.preview-empty{height:100%;display:grid;place-items:center;align-content:center;gap:10px;padding:28px;text-align:center;color:var(--muted)}.empty-inbox h2,.preview-empty h2{color:var(--ink);margin:0;font-size:18px}.empty-inbox p,.preview-empty p{max-width:300px;margin:0;font-size:13px;line-height:1.48}.message-preview{display:grid;grid-template-rows:auto 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1fr}.security-strip,.logout{display:none}.content-grid{grid-template-columns:1fr}.admin-panel{order:-1}}@media(max-width:820px){.login-shell{grid-template-columns:1fr;padding:14px}.app-shell{display:block}.sidebar{grid-template-columns:1fr;padding:16px}.workspace{padding:12px}.topbar{align-items:stretch;flex-wrap:wrap}.search-box{order:3;width:100%;margin-left:0}.split{grid-template-columns:1fr}}