:root{
  --ink:#272338;
  --muted:#746f80;
  --paper:#f4f2f7;
  --card:#ffffff;
  --soft:#efebf6;
  --line:#ddd8e5;
  --purple:#6952dc;
  --purple-dark:#342b57;
  --pink:#e65b78;
  --green:#2f9d62;
  --red:#b42318;
  --shadow:0 18px 48px #30284714;
  --radius:18px;
  --sidebar:244px;
}
:root[data-theme="dark"]{
  --ink:#f2eefb;
  --muted:#aaa4b9;
  --paper:#15131b;
  --card:#201d28;
  --soft:#2b2637;
  --line:#3a3545;
  --purple:#9a87ff;
  --purple-dark:#cfc5ff;
  --pink:#ff7894;
  --green:#66c992;
  --red:#ff8b84;
  --shadow:0 18px 48px #0006;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font:400 15px/1.45 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:inherit}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
body{min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;z-index:100;width:var(--sidebar);display:flex;flex-direction:column;padding:24px 17px 17px;border-right:1px solid var(--line);background:var(--card)}
.brand{display:flex;align-items:center;gap:11px;padding:0 8px 26px;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:43px;height:43px;flex:0 0 43px;border-radius:12px;background:var(--pink);color:#fff;font-weight:950;box-shadow:0 10px 25px #e65b7840}
.brand strong,.brand small,.profile strong,.profile small{display:block}
.brand small,.profile small{color:var(--muted);font-size:.72rem}
.nav{display:grid;gap:4px}
.nav a{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-weight:760}
.nav a span{width:20px;text-align:center}
.nav a:hover,.nav a.active{background:var(--soft);color:var(--purple-dark)}
.nav-sep{height:1px;margin:10px 9px;background:var(--line)}
.sidebar-bottom{display:grid;gap:8px;margin-top:auto}
.theme-btn{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--soft);color:var(--ink);font-weight:750;text-align:left}
.profile{display:flex;align-items:center;gap:9px;padding:13px 7px 7px;border-top:1px solid var(--line)}
.avatar{display:grid;width:36px;height:36px;place-items:center;border-radius:10px;background:#fde9ee;color:#c83f5b;font-weight:900}
.logout{padding:8px;color:var(--muted);text-align:center;text-decoration:none;font-size:.76rem;font-weight:800}
.mobilebar{display:none}
.page{min-width:0;margin-left:var(--sidebar);padding:32px clamp(20px,3vw,48px) 60px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.overline{margin:0;color:var(--purple);font-size:.7rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.page-head h1{margin:3px 0 4px;font-size:clamp(2rem,4vw,2.7rem);letter-spacing:-.045em}
.page-head p{margin:0;color:var(--muted)}
.head-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}
.btn,.button{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid transparent;border-radius:10px;padding:10px 14px;font-weight:800;text-decoration:none;transition:.15s ease}
.btn:hover,.button:hover{transform:translateY(-1px)}
.primary{background:var(--purple);color:#fff;box-shadow:0 8px 18px #5e49d82e}
.secondary{background:var(--soft);color:var(--ink);border-color:var(--line)}
.auto-status{display:inline-flex;align-items:center;gap:7px;color:var(--muted);font-size:.75rem;font-weight:800}
.auto-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px color-mix(in srgb,var(--green) 15%,transparent)}
.auto-status.busy .auto-dot{background:var(--purple)}
.auto-status.error{color:var(--red)}
.auto-status.error .auto-dot{background:var(--red)}
.inbox-grid{display:grid;grid-template-columns:minmax(310px,410px) minmax(0,1fr);gap:18px;align-items:start}
.inbox-panel{overflow:hidden}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 17px;border-bottom:1px solid var(--line)}
.panel-head small{color:var(--muted)}
.mail-list{display:grid;max-height:calc(100vh - 210px);overflow:auto}
.mail-item{display:grid;gap:5px;padding:14px 16px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none;background:var(--card);transition:.13s ease}
.mail-item:hover{background:var(--soft)}
.mail-item:last-child{border-bottom:0}
.mail-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.mail-top strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.9rem}
.mail-top time{flex:0 0 auto;color:var(--muted);font-size:.69rem;font-weight:750}
.mail-subject{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.82rem;font-weight:730}
.mail-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted);font-size:.7rem}
.badge{display:inline-flex;padding:3px 7px;border-radius:999px;background:var(--soft);color:var(--purple-dark);font-size:.66rem;font-weight:850}
.empty{padding:32px 18px;color:var(--muted);text-align:center}
.pagination{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:11px 14px;border-top:1px solid var(--line);background:var(--soft)}
.pagination a{padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--card);text-decoration:none;font-size:.74rem;font-weight:800}
.pagination span{color:var(--muted);font-size:.72rem}
.preview-empty{min-height:430px;display:grid;place-items:center;padding:30px;text-align:center}
.preview-empty .icon{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 16px;border-radius:17px;background:var(--soft);color:var(--purple);font-size:1.5rem}
.preview-empty h2{margin:0 0 8px}
.preview-empty p{max-width:450px;margin:0;color:var(--muted)}
.thread{max-width:1050px;margin:0 auto}
.thread-summary{padding:20px 22px}
.thread-summary h2{margin:0 0 8px;font-size:1.25rem}
.thread-summary-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:.78rem}
.message{margin-top:12px;border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:0 8px 26px #3028470c;overflow:hidden}
.message summary{list-style:none;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:15px 18px;cursor:pointer}
.message summary::-webkit-details-marker{display:none}
.message summary:hover{background:var(--soft)}
.message.out summary{box-shadow:inset 3px 0 0 var(--purple)}
.message-who strong,.message-who span{display:block}
.message-who strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.message-who span{margin-top:3px;color:var(--muted);font-size:.72rem}
.message-date{color:var(--muted);font-size:.72rem;white-space:nowrap}
.message-body{padding:2px 18px 20px;border-top:1px solid var(--line)}
.message-body pre{margin:16px 0 0;white-space:pre-wrap;word-break:break-word;font:inherit;line-height:1.55}
.reply-card{margin-top:18px;padding:20px}
.reply-card h2{margin:0 0 12px;font-size:1rem}
textarea,input,select{background:var(--card);color:var(--ink);border:1px solid var(--line)}
textarea:focus,input:focus,select:focus{border-color:var(--purple);box-shadow:0 0 0 3px #5e49d818;outline:none}
.reply-card textarea{width:100%;min-height:150px;padding:13px;border-radius:11px;resize:vertical}
.reply-actions{display:flex;justify-content:flex-end;margin-top:10px}
.form-grid{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:18px}
.form-card{padding:22px}
.form-card h2{margin-top:0}
.form-card h3{margin:20px 0 5px;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}
.form-card label{display:block;margin:13px 0 5px;font-weight:760}
.form-card input,.form-card select{width:100%;margin-top:6px;padding:11px;border-radius:9px}
.account-row{padding:13px 0;border-bottom:1px solid var(--line)}
.account-row:last-child{border-bottom:0}
.account-row small{color:var(--muted)}
.alert{padding:11px 13px;border-radius:9px;margin:0 0 14px}
.alert.error{border:1px solid #efc2c5;background:#fff0f0;color:#9d1620}
.alert.ok{border:1px solid #b9e2c7;background:#e7f6ec;color:#176b38}
.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(circle at 18% 10%,#5e49d821,transparent 36%),var(--paper)}
.login-card{width:min(430px,100%);padding:32px;border:1px solid var(--line);border-radius:18px;background:var(--card);box-shadow:var(--shadow);border-top:5px solid var(--purple)}
.login-brand{display:flex;align-items:center;gap:13px;margin-bottom:24px}
.login-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;background:var(--pink);color:#fff;font-weight:950}
.login-card h1{margin:0;font-size:1.35rem}
.login-card p{margin:3px 0 0;color:var(--muted);font-size:.78rem}
.login-card label{display:block;margin:13px 0 5px;font-weight:760}
.login-card input{width:100%;padding:12px;border-radius:9px}
.login-card .btn{width:100%;margin-top:7px}
.setup-wrap{max-width:760px;margin:40px auto;padding:0 20px}
.setup-card{padding:25px}
.setup-card table{width:100%;border-collapse:collapse}
.setup-card th,.setup-card td{padding:10px;border-bottom:1px solid var(--line);text-align:left}
.setup-card label{display:block;margin:13px 0 5px;font-weight:760}
.setup-card input{width:100%;padding:11px;border-radius:9px}
@media(max-width:900px){
  .sidebar{transform:translateX(-100%);transition:.2s}
  body.menu-open .sidebar{transform:translateX(0);box-shadow:20px 0 50px #211c3150}
  .mobilebar{position:sticky;top:0;z-index:90;display:flex;align-items:center;justify-content:space-between;height:62px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--card)}
  .mobilebar button{padding:8px 11px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink)}
  .page{margin-left:0;padding:24px 14px 45px}
  .inbox-grid,.form-grid{grid-template-columns:1fr}
  .mail-list{max-height:none}
}