:root{
  --bg:#f4f2fc;--card:rgba(255,255,255,.86);--card-solid:#fff;--text:#1f1b2e;--muted:#6b6680;
  --line:rgba(124,92,214,.16);--accent:#7c5cd6;--accent-2:#c86bd6;--accent-soft:rgba(124,92,214,.1);
  --danger:#c2414b;--ok:#2f7d5b;--shadow:0 10px 30px rgba(70,50,120,.1);--radius:16px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
}
[data-theme="dark"]{
  --bg:#14111d;--card:rgba(36,31,50,.86);--card-solid:#241f32;--text:#ece9f5;--muted:#a49dbd;
  --line:rgba(160,130,240,.2);--accent:#a58cf0;--accent-2:#e08ad8;--accent-soft:rgba(165,140,240,.14);
  --danger:#ef7b84;--ok:#6fd0a5;--shadow:0 10px 30px rgba(0,0,0,.4);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
.bg-aurora{position:fixed;inset:0;z-index:-1;pointer-events:none;background:
  radial-gradient(60% 50% at 12% 8%,rgba(190,170,255,.5),transparent 60%),
  radial-gradient(55% 45% at 88% 0%,rgba(255,190,225,.45),transparent 60%),
  radial-gradient(60% 60% at 78% 92%,rgba(170,200,255,.45),transparent 65%),
  radial-gradient(50% 50% at 20% 100%,rgba(215,180,255,.35),transparent 60%);}
[data-theme="dark"] .bg-aurora{background:
  radial-gradient(60% 50% at 12% 8%,rgba(90,60,160,.4),transparent 60%),
  radial-gradient(55% 45% at 88% 0%,rgba(140,60,120,.35),transparent 60%),
  radial-gradient(60% 60% at 78% 92%,rgba(50,70,150,.35),transparent 65%),
  radial-gradient(50% 50% at 20% 100%,rgba(90,60,150,.3),transparent 60%);}
.app{max-width:1400px;margin:0 auto;padding:18px 20px 40px}
a{color:var(--accent)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.hint{font-size:12.5px;color:var(--muted);margin:8px 0 0}
.err{color:var(--danger);font-size:13px;margin:8px 0 0}
.muted-sm{color:var(--muted);font-size:13px;font-weight:400}

.topbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 16px;border-radius:var(--radius);background:var(--card);backdrop-filter:blur(12px);border:1px solid var(--line);box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-text strong{font-size:16px;letter-spacing:.2px}
.brand-text small{font-size:10.5px;letter-spacing:2px;color:var(--muted)}
.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.badge{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:600;white-space:nowrap}
.drawer-toggle{display:none;margin-left:auto}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:10px;border:1px solid var(--line);background:var(--card-solid);color:var(--text);font-size:13.5px;font-weight:500;cursor:pointer;text-decoration:none;transition:background .18s,border-color .18s,transform .12s,color .18s;white-space:nowrap}
.btn:hover{background:var(--accent-soft);border-color:var(--accent)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#fff}
.btn.primary:hover{filter:brightness(1.06);background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.btn.ghost{background:transparent}
.btn.danger{background:var(--danger);border:none;color:#fff}
.btn.danger-ghost{background:transparent;color:var(--danger);border-color:color-mix(in srgb,var(--danger) 40%,transparent)}
.btn.danger-ghost:hover{background:color-mix(in srgb,var(--danger) 12%,transparent)}
.btn.icon-btn{padding:8px;width:36px;height:36px}
.btn.small{padding:5px 10px;font-size:12.5px}
.btn.block{width:100%;margin-top:14px}
.icon-btn .ic-moon{display:none}
[data-theme="dark"] .icon-btn .ic-sun{display:none}
[data-theme="dark"] .icon-btn .ic-moon{display:block}

.banner{display:flex;align-items:center;gap:10px;margin-top:14px;padding:10px 14px;border-radius:12px;background:color-mix(in srgb,#f0b23a 16%,var(--card-solid));border:1px solid color-mix(in srgb,#f0b23a 45%,transparent);color:var(--text);font-size:13.5px;flex-wrap:wrap}
.banner svg{color:#b57b12;flex:0 0 auto}
.banner a{margin-left:auto;font-weight:600}

.layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:18px;margin-top:18px;align-items:start}
.sidebar{background:var(--card);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;display:flex;flex-direction:column;max-height:calc(100vh - 140px);position:sticky;top:14px}
.sidebar-head{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.sidebar-head h2{font-size:14px;margin:0;font-weight:600}
.count{font-size:11.5px;padding:1px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:600}
.drawer-close{display:none;margin-left:auto}
.search-wrap{display:flex;align-items:center;gap:6px;padding:0 10px;border:1px solid var(--line);border-radius:10px;background:var(--card-solid);color:var(--muted)}
.search-wrap input{flex:1;border:none;background:transparent;color:var(--text);padding:9px 0;font-size:13.5px;outline:none;min-width:0}
.addr-list{list-style:none;margin:12px 0 0;padding:0;overflow-y:auto;flex:1;display:flex;flex-direction:column;gap:6px;min-height:40px}
.addr-item{display:flex;flex-direction:column;gap:2px;padding:9px 10px;border-radius:10px;border:1px solid transparent;cursor:pointer;background:transparent;text-align:left;font:inherit;color:var(--text);width:100%;transition:background .15s,border-color .15s}
.addr-item:hover{background:var(--accent-soft)}
.addr-item.active{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 45%,transparent)}
.addr-line{display:flex;align-items:center;gap:6px;justify-content:space-between}
.addr-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.addr-meta{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--muted)}
.addr-meta .dot{width:3px;height:3px;border-radius:50%;background:currentColor;opacity:.6}
.addr-badge{font-size:10.5px;padding:0 6px;border-radius:999px;background:var(--accent);color:#fff;font-weight:600;line-height:1.6}
.addr-remove{background:transparent;border:none;color:var(--muted);cursor:pointer;padding:2px;border-radius:6px;display:inline-flex;line-height:0}
.addr-remove:hover{color:var(--danger);background:color-mix(in srgb,var(--danger) 12%,transparent)}
.sidebar-empty{color:var(--muted);font-size:12.5px;text-align:center;padding:20px 0}
.sidebar-note{font-size:11.5px;color:var(--muted);margin:12px 0 0;border-top:1px solid var(--line);padding-top:10px}

.main{display:flex;flex-direction:column;gap:18px;min-width:0}
.card{background:var(--card);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);position:relative;padding:22px}
.gen-card::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;border-radius:var(--radius) var(--radius) 0 0;background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.gen-card h1{font-size:20px;margin:0 0 18px;font-weight:700;letter-spacing:.2px}
.gen-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.col-title{font-size:13px;color:var(--muted);margin:0 0 12px;font-weight:600;text-transform:uppercase;letter-spacing:1px}
.current-addr{display:flex;align-items:center;justify-content:center;text-align:center;min-height:104px;padding:16px;border-radius:12px;border:2px dashed color-mix(in srgb,var(--accent) 45%,transparent);background:var(--accent-soft);word-break:break-all}
.current-addr-text{font-size:clamp(17px,2.4vw,24px);font-weight:700;letter-spacing:.3px;color:var(--text);line-height:1.3}
.current-addr-text.placeholder{color:var(--muted);font-weight:500;font-size:15px}
.row-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:14px}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid var(--accent-soft);border-top-color:var(--accent);animation:spin .7s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.config-row{margin-bottom:14px;display:flex;flex-direction:column;gap:6px}
.field-label{display:block;font-size:12.5px;color:var(--muted);font-weight:600;margin-bottom:6px}
.config-row .field-label{margin-bottom:0}
.input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--card-solid);color:var(--text);font-size:14px;font-family:inherit;outline:none;transition:border-color .15s,box-shadow .15s}
.input:focus-visible{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.input.readonly{color:var(--muted);background:transparent;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.textarea{resize:vertical;min-height:120px;line-height:1.55}
input[type=range]{width:100%;accent-color:var(--accent);height:26px}
#len-out{display:inline-block;min-width:22px;text-align:center;color:var(--accent);font-weight:700;font-size:12.5px}
.custom-form{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.prefix-row{display:flex;align-items:stretch;gap:0}
.prefix-row .input{border-radius:10px 0 0 10px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.prefix-suffix{display:flex;align-items:center;padding:0 10px;border-radius:0 10px 10px 0;border:1px solid var(--line);border-left:none;background:var(--accent-soft);color:var(--muted);font-size:12.5px;white-space:nowrap}

.mail-card{padding:20px 22px}
.mail-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:space-between}
.mail-head h2{font-size:16px;margin:0;font-weight:700}
.mail-head-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.mail-search{min-width:200px}
.synced{font-size:11.5px;color:var(--muted);margin:6px 0 10px}
.mail-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.mail-item{display:flex;gap:12px;padding:12px 10px;border-bottom:1px solid var(--line);cursor:pointer;background:transparent;border-left:3px solid transparent;text-align:left;font:inherit;color:var(--text);width:100%;transition:background .15s}
.mail-item:last-child{border-bottom:none}
.mail-item:hover{background:var(--accent-soft)}
.mail-item.unread{background:color-mix(in srgb,var(--accent) 6%,transparent);border-left-color:var(--accent)}
.mail-main{min-width:0;flex:1;display:flex;flex-direction:column;gap:2px}
.mail-row1{display:flex;gap:8px;align-items:baseline}
.mail-from{font-size:13.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.mail-item.unread .mail-from{color:var(--text)}
.mail-date{font-size:11.5px;color:var(--muted);flex:0 0 auto}
.mail-subject{font-size:13px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mail-sub{display:flex;gap:8px;align-items:center;font-size:11.5px;color:var(--muted);min-width:0}
.mail-recip{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mail-flags{display:flex;align-items:center;gap:6px;flex:0 0 auto;color:var(--muted)}
.mail-flags .unread-dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}
.empty-state{display:flex;flex-direction:column;align-items:center;gap:8px;padding:44px 16px;color:var(--muted)}
.empty-state p{margin:0;font-size:13.5px}
.footer{color:var(--muted);font-size:12px;text-align:center;padding:4px 8px 0}
.footer p{margin:4px 0}

.login-wrap{display:flex;justify-content:center;padding:48px 0;min-height:60vh;align-items:center}
.login-card{width:100%;max-width:400px;padding:30px 28px}
.login-brand{text-align:center;margin-bottom:22px}
.login-brand .brand-icon{margin:0 auto 12px;width:48px;height:48px;border-radius:14px}
.login-brand h1{font-size:20px;margin:0 0 6px;font-weight:700}
.login-card .field-label{margin-top:14px}

.modal-backdrop{position:fixed;inset:0;background:rgba(20,12,40,.42);backdrop-filter:blur(2px);z-index:40;animation:fade .16s ease}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{position:fixed;z-index:50;left:50%;top:50%;transform:translate(-50%,-50%);width:min(760px,calc(100vw - 32px));max-height:calc(100vh - 48px);display:flex;flex-direction:column;background:var(--card-solid);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 60px rgba(30,15,60,.3);animation:pop .18s ease;overflow:hidden}
@keyframes pop{from{opacity:0;transform:translate(-50%,-46%)}to{opacity:1;transform:translate(-50%,-50%)}}
.modal-head{display:flex;align-items:flex-start;gap:10px;padding:18px 22px 12px;border-bottom:1px solid var(--line)}
.modal-head-main{min-width:0;flex:1}
.modal-head h2{font-size:17px;margin:0 0 4px;font-weight:700;word-break:break-word}
.msg-meta{font-size:12px;color:var(--muted);margin:0;word-break:break-word;display:flex;flex-direction:column;gap:2px}
.modal-body{padding:16px 22px;overflow-y:auto;min-height:0}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;padding:14px 22px;border-top:1px solid var(--line);background:var(--card);flex-wrap:wrap}
.msg-toolbar{display:flex;align-items:center;gap:8px;justify-content:space-between;margin-bottom:12px;flex-wrap:wrap}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;padding:2px;gap:2px}
.seg-btn{border:none;background:transparent;color:var(--muted);padding:6px 14px;border-radius:8px;font-size:12.5px;font-weight:600;cursor:pointer}
.seg-btn.active{background:var(--accent-soft);color:var(--accent)}
.seg-btn:disabled{opacity:.45;cursor:not-allowed}
.msg-code{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;border-radius:10px;background:var(--accent-soft);margin-bottom:12px}
.code-value{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:17px;font-weight:700;letter-spacing:2px;color:var(--accent);word-break:break-all}
.msg-text{white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.6;background:color-mix(in srgb,var(--bg) 60%,transparent);border:1px solid var(--line);border-radius:10px;padding:14px;margin:0;max-height:52vh;overflow:auto;color:var(--text)}
.msg-html{width:100%;min-height:420px;border:1px solid var(--line);border-radius:10px;background:#fff}
.attachments{margin-top:16px}
.attachments h3{font-size:13px;margin:0 0 8px}
.att-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.att-list li{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;font-size:13px}
.att-list .att-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.att-list .att-size{font-size:11.5px;color:var(--muted)}
.compose-body{display:flex;flex-direction:column;gap:6px}
.compose-body .field-label{margin:8px 0 0}

.toast-stack{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);z-index:80;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:min(460px,calc(100vw - 32px))}
.toast{pointer-events:auto;background:var(--card-solid);color:var(--text);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;box-shadow:0 12px 30px rgba(30,15,60,.2);padding:10px 14px;font-size:13px;width:100%;animation:toastIn .2s ease;word-break:break-word}
.toast.error{border-left-color:var(--danger)}
.toast.ok{border-left-color:var(--ok)}
@keyframes toastIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.drawer-backdrop{display:none}
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:fixed;z-index:35;left:0;top:0;bottom:0;width:min(320px,86vw);max-height:none;border-radius:0 var(--radius) var(--radius) 0;transform:translateX(-105%);transition:transform .22s ease;box-shadow:0 0 40px rgba(20,10,40,.35)}
  .sidebar.open{transform:none}
  .drawer-close{display:inline-flex}
  .drawer-toggle{display:inline-flex}
  .drawer-backdrop{display:block;position:fixed;inset:0;background:rgba(20,12,40,.4);z-index:34}
  .topbar-actions{order:3;width:100%;margin-left:0;justify-content:flex-end}
}
@media (max-width:640px){
  .app{padding:12px 12px 32px}
  .gen-grid{grid-template-columns:1fr;gap:20px}
  .card{padding:16px}
  .mail-card{padding:16px}
  .mail-search{min-width:0;flex:1}
  .mail-head-tools{width:100%}
  .topbar-actions .badge{display:none}
  .modal{width:calc(100vw - 16px);max-height:calc(100vh - 24px)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
/* Keep removal as a separate interactive control, outside the select button. */
.addr-entry { position: relative; }
.addr-entry .addr-item { padding-right: 38px; }
.addr-entry > .addr-remove { position: absolute; right: 11px; top: 15px; z-index: 1; }
.mail-item { border-top: 0; border-right: 0; border-radius: 8px; }
.mail-item:last-child { border-bottom: 0; }
.toast-stack { max-height: 38vh; overflow: hidden; }
@media (min-width: 901px) {
  .sidebar { min-height: min(680px, calc(100dvh - 180px)); }
}
@media (max-width: 600px) {
  .current-addr-text { font-size: 15px; letter-spacing: 0; overflow-wrap: anywhere; }
}

[hidden] { display: none !important; }
#compose-form { display: flex; flex-direction: column; min-height: 0; max-height: inherit; }
#compose-form > .modal-body { flex: 1 1 auto; }