:root{--bg-app: #070a12;--bg-sidebar: #0a0e18;--bg-surface: rgba(20, 28, 46, .55);--bg-surface-hover: rgba(30, 41, 66, .72);--surface-solid: #111827;--border-subtle: rgba(140, 165, 215, .12);--border-strong: rgba(150, 175, 225, .22);--stroke: var(--border-subtle);--stroke-strong: var(--border-strong);--text-primary: #f2f6ff;--text-secondary: #c2cce0;--text-muted: #8592ac;--text-faint: #5c6980;--accent: #4f9dff;--accent-strong: #6aa8ff;--accent-cyan: #29d3ee;--accent-blue: #3b82f6;--accent-violet: #8b5cf6;--accent-magenta: #f43f9d;--gradient-brand: linear-gradient(100deg, #29d3ee 0%, #3b82f6 34%, #8b5cf6 66%, #f43f9d 100%);--gradient-brand-soft: linear-gradient(100deg, rgba(41, 211, 238, .16), rgba(139, 92, 246, .16));--ok: #2fd48a;--ok-bg: rgba(47, 212, 138, .12);--warn: #f6c453;--warn-bg: rgba(246, 196, 83, .12);--danger: #ff5c7a;--danger-bg: rgba(255, 92, 122, .12);--info: #57c7ff;--info-bg: rgba(87, 199, 255, .12);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 22px;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-card: 0 8px 24px rgba(0, 0, 0, .35);--shadow-lg: 0 24px 60px rgba(0, 0, 0, .5);--shadow-glow: 0 0 0 1px rgba(93, 140, 246, .28), 0 12px 40px rgba(74, 105, 246, .22);--fast: .12s;--med: .2s;--slow: .32s;--ease: cubic-bezier(.4, 0, .2, 1);--sidebar-w: 256px;--list-w: 384px;--topbar-h: 60px;--row-h: 76px;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: "JetBrains Mono", "SF Mono", ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font);background:var(--bg-app);color:var(--text-primary);font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}body:before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(60% 50% at 12% -6%,rgba(41,211,238,.1),transparent 60%),radial-gradient(50% 45% at 100% 0%,rgba(139,92,246,.1),transparent 55%),radial-gradient(45% 40% at 85% 100%,rgba(244,63,157,.07),transparent 60%);z-index:0}a{color:var(--accent-strong)}button{font-family:inherit}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:#8ca5d72e;border-radius:var(--radius-pill);border:2px solid transparent;background-clip:content-box}::-webkit-scrollbar-thumb:hover{background:#8ca5d752;background-clip:content-box}:focus-visible{outline:2px solid rgba(79,157,255,.55);outline-offset:2px}.app-root{position:relative;z-index:1;height:100%;display:flex;overflow:hidden}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-secondary);border-radius:var(--radius-md);padding:8px 14px;font-size:13px;font-weight:500;cursor:pointer;transition:background var(--fast) var(--ease),border-color var(--fast) var(--ease),transform var(--fast) var(--ease),color var(--fast) var(--ease);white-space:nowrap}.btn:hover{background:var(--bg-surface-hover);color:var(--text-primary);border-color:var(--border-strong)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--gradient-brand);color:#06121f;border:none;font-weight:600;box-shadow:var(--shadow-glow)}.btn-primary:hover{color:#06121f;filter:brightness(1.06)}.btn-ghost{background:transparent;border-color:transparent}.btn-ghost:hover{background:var(--bg-surface-hover)}.btn-danger{color:var(--danger);border-color:#ff5c7a4d}.btn-danger:hover{background:var(--danger-bg);color:var(--danger)}.btn-icon{padding:8px;width:36px;height:36px}.input{width:100%;background:#090d1699;border:1px solid var(--border-subtle);border-radius:var(--radius-md);color:var(--text-primary);padding:10px 12px;font-size:14px;transition:border-color var(--fast) var(--ease),box-shadow var(--fast) var(--ease)}.input:focus{outline:none;border-color:#4f9dff99;box-shadow:0 0 0 3px #4f9dff26}.input::placeholder{color:var(--text-faint)}.label{display:block;font-size:12px;color:var(--text-muted);margin-bottom:6px;font-weight:500}.chip{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;padding:3px 9px;border-radius:var(--radius-pill);border:1px solid transparent}.chip-ok{color:var(--ok);background:var(--ok-bg);border-color:#2fd48a40}.chip-warn{color:var(--warn);background:var(--warn-bg);border-color:#f6c45340}.chip-danger{color:var(--danger);background:var(--danger-bg);border-color:#ff5c7a40}.chip-muted{color:var(--text-muted);background:#8ca5d714;border-color:var(--border-subtle)}.dot{width:8px;height:8px;border-radius:50%;flex:none}.logo-img{display:block;height:auto;width:auto}.auth-screen{position:relative;z-index:1;height:100%;width:100%;display:grid;place-items:center;padding:24px}.auth-card{width:100%;max-width:400px;background:linear-gradient(180deg,#141c2eb8,#0c111eb8);border:1px solid var(--border-strong);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:32px 28px;backdrop-filter:blur(18px)}.auth-logo{display:flex;justify-content:center;margin-bottom:8px}.auth-logo img{height:44px}.auth-title{text-align:center;font-size:18px;font-weight:600;margin:12px 0 4px}.auth-sub{text-align:center;color:var(--text-muted);font-size:13px;margin-bottom:22px}.auth-field{margin-bottom:14px}.auth-error{background:var(--danger-bg);border:1px solid rgba(255,92,122,.3);color:#ffb3c1;padding:10px 12px;border-radius:var(--radius-md);font-size:13px;margin-bottom:14px}.auth-switch{text-align:center;margin-top:18px;font-size:13px;color:var(--text-muted)}.auth-switch button{background:none;border:none;color:var(--accent-strong);cursor:pointer;font-size:13px;font-weight:600}.sidebar{width:var(--sidebar-w);flex:none;background:var(--bg-sidebar);border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;height:100%}.sidebar-head{height:var(--topbar-h);display:flex;align-items:center;padding:0 18px;border-bottom:1px solid var(--border-subtle)}.sidebar-head img{height:24px}.compose-btn{margin:16px 16px 8px}.nav{padding:6px 10px;overflow-y:auto;flex:1}.nav-item{display:flex;align-items:center;gap:11px;width:100%;padding:9px 12px;border-radius:var(--radius-md);color:var(--text-secondary);background:none;border:none;cursor:pointer;font-size:13.5px;text-align:left;transition:background var(--fast) var(--ease),color var(--fast) var(--ease)}.nav-item:hover{background:var(--bg-surface-hover);color:var(--text-primary)}.nav-item.active{background:var(--gradient-brand-soft);color:var(--text-primary);box-shadow:inset 0 0 0 1px var(--border-strong)}.nav-item .ico{width:18px;text-align:center;flex:none;opacity:.9}.nav-item .count{margin-left:auto;font-size:11px;color:var(--text-muted)}.nav-sep{height:1px;background:var(--border-subtle);margin:8px 12px}.acct-switch{padding:10px;border-bottom:1px solid var(--border-subtle)}.acct-current{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-md);cursor:pointer;border:1px solid var(--border-subtle);background:var(--bg-surface);width:100%;text-align:left;color:var(--text-primary)}.acct-current:hover{background:var(--bg-surface-hover)}.acct-avatar{width:32px;height:32px;border-radius:9px;flex:none;display:grid;place-items:center;background:var(--gradient-brand);color:#06121f;font-weight:700;font-size:13px}.acct-meta{min-width:0;flex:1}.acct-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.acct-email{font-size:11.5px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.acct-list{margin-top:6px;display:flex;flex-direction:column;gap:3px}.acct-row{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:var(--radius-md);cursor:pointer;border:none;background:none;width:100%;text-align:left;color:var(--text-secondary)}.acct-row:hover{background:var(--bg-surface-hover)}.acct-row.active{background:var(--gradient-brand-soft)}.acct-state{margin-left:auto}.sidebar-foot{padding:10px;border-top:1px solid var(--border-subtle);display:flex;align-items:center;gap:8px}.sidebar-foot .who{min-width:0;flex:1}.sidebar-foot .who .n{font-size:12.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-foot .who .e{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.list-col{width:var(--list-w);flex:none;border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;height:100%;background:#090d1659}.list-head{padding:12px 16px;border-bottom:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:10px}.list-head-row{display:flex;align-items:center;gap:10px}.list-title{font-size:15px;font-weight:600;flex:1;text-transform:capitalize}.search-box{position:relative}.search-box input{padding-left:34px}.search-box .s-ico{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--text-faint)}.msg-scroll{overflow-y:auto;flex:1}.msg-row{display:flex;gap:11px;padding:12px 16px;border-bottom:1px solid var(--border-subtle);cursor:pointer;transition:background var(--fast) var(--ease);min-height:var(--row-h)}.msg-row:hover{background:var(--bg-surface-hover)}.msg-row.active{background:var(--gradient-brand-soft);box-shadow:inset 2px 0 0 var(--accent)}.msg-row.unread .msg-from,.msg-row.unread .msg-subj{color:var(--text-primary);font-weight:600}.msg-unread-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:6px;flex:none}.msg-unread-dot.read{background:transparent}.msg-main{min-width:0;flex:1}.msg-line1{display:flex;align-items:baseline;gap:8px}.msg-from{font-size:13.5px;color:var(--text-secondary);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.msg-date{font-size:11.5px;color:var(--text-faint);flex:none}.msg-subj{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.msg-snip{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.msg-badges{display:flex;gap:6px;align-items:center;margin-top:5px;color:var(--text-faint)}.msg-star{color:var(--warn)}.read-col{flex:1;min-width:0;display:flex;flex-direction:column;height:100%}.read-head{padding:18px 24px;border-bottom:1px solid var(--border-subtle)}.read-toolbar{display:flex;align-items:center;gap:6px;margin-bottom:14px;flex-wrap:wrap}.read-toolbar .spacer{flex:1}.read-subject{font-size:19px;font-weight:600;margin:0 0 12px}.read-meta{display:flex;align-items:center;gap:12px}.read-avatar{width:40px;height:40px;border-radius:11px;flex:none;display:grid;place-items:center;background:var(--gradient-brand);color:#06121f;font-weight:700}.read-addr{min-width:0}.read-addr .n{font-size:14px;font-weight:600}.read-addr .a{font-size:12.5px;color:var(--text-muted)}.read-addr .to{font-size:12px;color:var(--text-faint);margin-top:2px}.read-body{padding:24px;overflow-y:auto;flex:1}.read-frame{width:100%;border:none;background:#fff;border-radius:var(--radius-md)}.remote-banner{display:flex;align-items:center;gap:12px;background:var(--warn-bg);border:1px solid rgba(246,196,83,.3);color:#f3e0b0;padding:10px 14px;border-radius:var(--radius-md);margin-bottom:16px;font-size:13px}.remote-banner .btn{margin-left:auto}.attach-tray{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.attach-item{display:flex;align-items:center;gap:10px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:9px 12px;background:var(--bg-surface);cursor:pointer;color:var(--text-secondary)}.attach-item:hover{background:var(--bg-surface-hover);color:var(--text-primary)}.attach-name{font-size:12.5px;max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attach-size{font-size:11px;color:var(--text-faint)}.state-pane{flex:1;display:grid;place-items:center;padding:40px;text-align:center;color:var(--text-muted)}.state-inner{max-width:340px}.state-inner img{height:40px;opacity:.7;margin-bottom:20px}.state-title{font-size:16px;color:var(--text-secondary);font-weight:600;margin-bottom:6px}.state-desc{font-size:13px;color:var(--text-muted)}.spinner{width:26px;height:26px;border-radius:50%;border:3px solid rgba(140,165,215,.18);border-top-color:var(--accent);animation:spin .8s linear infinite;margin:0 auto 16px}@keyframes spin{to{transform:rotate(360deg)}}.modal-scrim{position:fixed;inset:0;z-index:50;background:#04060ca8;backdrop-filter:blur(6px);display:grid;place-items:center;padding:24px}.modal{width:100%;max-width:440px;background:linear-gradient(180deg,#141c2ee6,#0c111ef0);border:1px solid var(--border-strong);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);overflow:hidden}.modal-head{padding:18px 20px 0}.modal-title{font-size:16px;font-weight:600}.modal-sub{font-size:13px;color:var(--text-muted);margin-top:4px}.modal-body{padding:18px 20px}.modal-foot{padding:14px 20px;display:flex;gap:10px;justify-content:flex-end;border-top:1px solid var(--border-subtle)}.privacy-note{display:flex;gap:10px;align-items:flex-start;font-size:12px;color:var(--text-muted);background:var(--info-bg);border:1px solid rgba(87,199,255,.2);padding:10px 12px;border-radius:var(--radius-md);margin-top:14px}.compose{width:100%;max-width:680px;background:linear-gradient(180deg,#141c2ef0,#0c111ef5);border:1px solid var(--border-strong);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;max-height:min(88vh,760px)}.compose-head{display:flex;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border-subtle)}.compose-head .t{font-size:15px;font-weight:600;flex:1}.compose-fields{padding:6px 20px;overflow-y:auto}.crow{display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border-subtle);padding:6px 0}.crow .k{width:56px;font-size:12px;color:var(--text-muted);flex:none}.crow input{border:none;background:none;padding:8px 0;color:var(--text-primary);flex:1;font-size:14px}.crow input:focus{outline:none}.crow .cc-toggle{font-size:12px;color:var(--accent-strong);cursor:pointer;background:none;border:none}.compose-body{border:none;background:none;color:var(--text-primary);padding:16px 20px;flex:1;resize:none;font-size:14px;font-family:var(--font);line-height:1.6;min-height:200px}.compose-body:focus{outline:none}.compose-foot{display:flex;align-items:center;gap:10px;padding:14px 20px;border-top:1px solid var(--border-subtle)}.compose-foot .spacer{flex:1}.attach-chips{display:flex;flex-wrap:wrap;gap:8px;padding:0 20px 12px}.attach-chip{display:flex;align-items:center;gap:8px;font-size:12px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-pill);padding:5px 10px;color:var(--text-secondary)}.attach-chip button{background:none;border:none;color:var(--text-muted);cursor:pointer}.toasts{position:fixed;bottom:22px;right:22px;z-index:80;display:flex;flex-direction:column;gap:10px}.toast{min-width:240px;max-width:360px;background:var(--surface-solid);border:1px solid var(--border-strong);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:12px 14px;font-size:13px;display:flex;gap:10px;align-items:flex-start;animation:toast-in var(--med) var(--ease)}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}}.toast.ok{border-left:3px solid var(--ok)}.toast.err{border-left:3px solid var(--danger)}.toast.info{border-left:3px solid var(--info)}.mobile-back,.mobile-topbar,.mtb-logo{display:none}@media(max-width:960px){.list-col{width:340px}}@media(max-width:760px){.app-root{flex-direction:column}.sidebar{position:fixed;z-index:40;left:0;top:0;bottom:0;transform:translate(-100%);transition:transform var(--med) var(--ease);width:min(86vw,320px);box-shadow:var(--shadow-lg);padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}.sidebar.open{transform:translate(0)}.mobile-topbar{display:flex;align-items:center;gap:6px;height:calc(56px + env(safe-area-inset-top,0px));padding:env(safe-area-inset-top,0px) 8px 0;border-bottom:1px solid var(--border-subtle);background:#0a0e18eb;backdrop-filter:blur(12px);flex:none}.mtb-logo{display:flex;flex:1;justify-content:center;align-items:center}.mobile-topbar .btn-icon{width:40px;height:40px}.content-cols{flex:1;display:flex;min-height:0}.list-col{width:100%;border-right:none}.read-col,.app-root.reading .list-col{display:none}.app-root.reading .read-col{display:flex}.mobile-back{display:inline-flex}.scrim-mobile{position:fixed;inset:0;z-index:39;background:#04060c8c}.list-head{padding:12px 14px}.msg-row{padding:14px}.msg-from{font-size:14.5px}.msg-subj{font-size:13.5px}.read-head{padding:14px 16px}.read-body{padding:16px 14px calc(20px + env(safe-area-inset-bottom,0px))}.read-subject{font-size:17px}.read-toolbar{gap:4px}.read-toolbar .btn span{display:none}.read-toolbar .btn{padding:8px;min-width:40px;min-height:40px}.read-toolbar .mobile-back{min-width:40px}.modal-scrim{padding:16px}.modal{max-width:100%}.compose-scrim{padding:0;align-items:stretch}.compose{max-width:100%;width:100%;max-height:100%;height:100%;border-radius:0;border:none}.compose-head{padding-top:calc(14px + env(safe-area-inset-top,0px))}.compose-foot{padding-bottom:calc(14px + env(safe-area-inset-bottom,0px))}.compose-body{min-height:160px}.auth-card{padding:28px 22px}.auth-logo img{height:60px!important}.input,.crow input,.compose-body{font-size:16px}.nav-item{padding:12px;font-size:14.5px}}