:root{
  --bg:#f4f5fb; --panel:#ffffff; --panel2:#f8f9fd; --text:#161a2e; --muted:#6b7190; --line:#e7e9f3;
  --primary:#4f46e5; --primary-2:#6366f1; --primary-soft:#eef0ff; --danger:#e11d48;
  --shadow:0 1px 2px rgba(20,24,60,.05),0 8px 24px rgba(20,24,60,.06); --shadow-lg:0 20px 60px rgba(20,24,60,.18);
  --r:16px; --r-sm:10px;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
[data-theme=dark]{
  --bg:#0e1020; --panel:#171a2e; --panel2:#1d2138; --text:#eceefb; --muted:#9aa0bf; --line:#2a2f4b;
  --primary:#818cf8; --primary-2:#a5b4fc; --primary-soft:#262a4d;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25); --shadow-lg:0 20px 60px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
body{font-size:14px;line-height:1.45}
.hidden{display:none!important}
button{font:inherit;color:inherit;cursor:pointer}
input,textarea{font:inherit;color:var(--text)}
.muted{color:var(--muted)} .small{font-size:12.5px} .grow{flex:1}
a{color:var(--primary)}

/* buttons */
.btn{border:0;border-radius:12px;padding:10px 16px;font-weight:600;display:inline-flex;align-items:center;gap:8px;justify-content:center;transition:.15s transform,.15s background,.15s box-shadow;white-space:nowrap}
.btn:active{transform:scale(.98)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 6px 16px rgba(79,70,229,.3)}
.btn-soft{background:var(--primary-soft);color:var(--primary)}
.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}
.btn-danger-soft{background:rgba(225,29,72,.1);color:var(--danger)}
.btn-ms{background:#2f2f2f;color:#fff;width:100%;padding:14px;font-size:15px}
.btn-ms-sm{background:#2f2f2f;color:#fff}
[data-theme=dark] .btn-ms,[data-theme=dark] .btn-ms-sm{background:#fff;color:#1b1b1b}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.ms-logo{display:grid;grid-template-columns:9px 9px;gap:2px}
.ms-logo i{width:9px;height:9px;display:block}
.ms-logo i:nth-child(1){background:#f25022}.ms-logo i:nth-child(2){background:#7fba00}.ms-logo i:nth-child(3){background:#00a4ef}.ms-logo i:nth-child(4){background:#ffb900}
.icon-btn{border:0;background:transparent;width:38px;height:38px;border-radius:12px;font-size:17px;display:inline-grid;place-items:center}
.icon-btn:hover{background:var(--panel2)}

/* welcome */
.welcome{min-height:100%;display:grid;place-items:center;padding:24px;background:radial-gradient(1000px 600px at 10% -10%,rgba(99,102,241,.25),transparent),radial-gradient(800px 500px at 110% 110%,rgba(236,72,153,.18),transparent),var(--bg)}
.welcome-card{width:100%;max-width:440px;background:var(--panel);border-radius:24px;padding:36px 30px;box-shadow:var(--shadow-lg);text-align:center;display:flex;flex-direction:column;gap:12px}
.logo-big{font-size:52px;line-height:1}
.welcome h1{margin:4px 0 0;font-size:30px;letter-spacing:-.02em}
.lead{color:var(--muted);margin:0 0 10px}
.setup-note{font-size:13px;color:var(--muted);margin:0}
.welcome-points{list-style:none;padding:0;margin:10px 0 0;text-align:left;display:grid;gap:8px;color:var(--muted);font-size:13px}

/* app shell */
.app{height:100%;display:flex;flex-direction:column}
.mode-banner{background:linear-gradient(90deg,#4f46e5,#9333ea);color:#fff;font-size:12.5px;text-align:center;padding:6px 12px;font-weight:500}
.mode-banner a{color:#fff;font-weight:700}
.topbar{display:flex;align-items:center;gap:12px;padding:12px 18px;background:var(--panel);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:17px;letter-spacing:-.01em;min-width:150px}
.brand-logo{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--primary-soft);font-size:18px}
.search{flex:1;max-width:520px;display:flex;align-items:center;gap:8px;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:0 12px}
.search input{border:0;background:transparent;outline:0;width:100%;padding:10px 0}
.top-actions{display:flex;align-items:center;gap:6px;margin-left:auto}
.account{display:flex;align-items:center;gap:8px}
.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:13px;flex:none}
.account .avatar{cursor:pointer}
.only-mobile{display:none}

.layout{flex:1;min-height:0;display:grid;grid-template-columns:280px 380px 1fr;gap:16px;padding:16px}
.groups,.list-pane,.reader{min-height:0;overflow:auto}

/* group cards */
.groups{display:flex;flex-direction:column;gap:10px;padding:2px}
.group-card{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--r);background:var(--panel);border:1px solid transparent;box-shadow:var(--shadow);text-align:left;width:100%;position:relative;overflow:hidden;transition:.15s transform,.15s border-color}
.group-card:hover{transform:translateY(-1px)}
.group-card::before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--c);opacity:0;transition:.15s}
.group-card.active{border-color:color-mix(in srgb,var(--c) 45%,transparent);background:color-mix(in srgb,var(--c) 8%,var(--panel))}
.group-card.active::before{opacity:1}
.g-icon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:21px;background:color-mix(in srgb,var(--c) 16%,transparent);flex:none}
.g-text{flex:1;min-width:0}
.g-name{font-weight:700}
.g-sub{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{min-width:24px;height:24px;padding:0 8px;border-radius:999px;background:var(--c);color:#fff;font-weight:700;font-size:12px;display:inline-grid;place-items:center}
.badge.zero{background:var(--panel2);color:var(--muted)}
.badge.bump{animation:bump .6s}
@keyframes bump{30%{transform:scale(1.35)}}
.groups-foot{margin-top:4px}
.groups-foot .btn{width:100%}

/* list */
.list-pane{background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow);display:flex;flex-direction:column}
.list-head{display:flex;align-items:baseline;justify-content:space-between;padding:16px 18px 8px;position:sticky;top:0;background:var(--panel);z-index:1}
.list-head h2{margin:0;font-size:18px;letter-spacing:-.01em}
.list{padding:4px 8px 10px}
.mail{display:flex;gap:12px;padding:12px 10px;border-radius:12px;cursor:pointer;position:relative;width:100%;text-align:left;border:0;background:transparent}
.mail:hover{background:var(--panel2)}
.mail.selected{background:var(--primary-soft)}
.mail.new{animation:flash 1.6s}
@keyframes flash{0%{background:color-mix(in srgb,var(--primary) 25%,transparent)}}
.mail-main{flex:1;min-width:0}
.mail-top{display:flex;align-items:center;gap:8px}
.mail-from{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.mail.unread .mail-from,.mail.unread .mail-subj{font-weight:800}
.mail-time{color:var(--muted);font-size:12px;flex:none}
.mail-subj{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mail-prev{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{width:9px;height:9px;border-radius:50%;background:var(--primary);flex:none}
.chip{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:600;padding:2px 8px;border-radius:999px;background:color-mix(in srgb,var(--c) 14%,transparent);color:color-mix(in srgb,var(--c) 80%,var(--text))}
.mail .chip{margin-top:5px}
.empty{padding:50px 20px;text-align:center;color:var(--muted)}
.empty .big{font-size:40px}

/* reader */
.reader{background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow);display:flex;flex-direction:column}
.reader-head{padding:22px 26px 14px;border-bottom:1px solid var(--line)}
.reader-head h1{margin:8px 0 14px;font-size:21px;letter-spacing:-.01em;line-height:1.3}
.reader-from{display:flex;align-items:center;gap:12px}
.reader-from .who{flex:1;min-width:0}
.reader-from .addr{color:var(--muted);font-size:12.5px;overflow:hidden;text-overflow:ellipsis}
.reader-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}
.reader-actions .btn{padding:7px 12px;font-size:13px}
.reader-body{padding:22px 26px;white-space:pre-wrap;flex:1}
.reader-body.html{padding:0;white-space:normal}
.reader-body iframe{width:100%;height:100%;min-height:420px;border:0;background:#fff;border-radius:0 0 var(--r) var(--r)}
.meeting-card{margin:16px 26px 0;padding:14px 16px;border-radius:14px;background:color-mix(in srgb,#f59e0b 12%,var(--panel));display:flex;gap:12px;align-items:center}
.meeting-card .mc-icon{font-size:26px}

/* sheets */
.sheet{position:fixed;inset:0;background:rgba(10,12,30,.45);backdrop-filter:blur(3px);display:flex;justify-content:flex-end;z-index:50;animation:fade .15s}
@keyframes fade{from{opacity:0}}
.sheet-panel{width:min(560px,100%);height:100%;background:var(--panel);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;animation:slide .2s ease-out}
.sheet-panel.narrow{width:min(480px,100%)}
#editor,#setup{justify-content:center;align-items:center;padding:16px}
#editor .sheet-panel,#setup .sheet-panel{height:auto;max-height:100%;border-radius:22px;animation:pop .18s ease-out}
@keyframes slide{from{transform:translateX(40px);opacity:0}}
@keyframes pop{from{transform:scale(.96);opacity:0}}
.sheet-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line)}
.sheet-head h2{margin:0;font-size:18px}
.sheet-body{padding:18px 22px;overflow:auto}
.auto-row{display:flex;gap:14px;align-items:center;padding:12px 14px;border-radius:14px;background:var(--panel2);margin-bottom:10px}
.sec-title{display:flex;align-items:center;justify-content:space-between;margin:20px 0 10px}
.sec-title h3,.outlook-apply h3{margin:0;font-size:15px}
.filter-list{display:flex;flex-direction:column;gap:10px}
.filter-item{display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;border:1px solid var(--line)}
.filter-item .g-text{min-width:0}
.filter-item .rules{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}
.rule-tag{font-size:11.5px;padding:2px 7px;border-radius:7px;background:var(--panel2);color:var(--muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.f-actions{display:flex;gap:2px}
.f-actions .icon-btn{width:32px;height:32px;font-size:14px}
.outlook-apply{margin-top:22px;padding:16px;border-radius:16px;background:var(--panel2);display:grid;gap:10px}
.outlook-apply p{margin:0}
.apply-log{font-size:12.5px;color:var(--muted);white-space:pre-wrap}

/* switch */
.switch{position:relative;width:44px;height:26px;flex:none}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:var(--line);border-radius:999px;transition:.2s;cursor:pointer}
.switch span::after{content:"";position:absolute;width:20px;height:20px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.switch input:checked+span{background:var(--primary)}
.switch input:checked+span::after{transform:translateX(18px)}

/* form */
.form{display:flex;flex-direction:column;gap:14px}
.form label,.label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:13px}
.form input,.form textarea{border:1px solid var(--line);background:var(--panel2);border-radius:11px;padding:10px 12px;font-weight:400;outline:0;resize:vertical}
.form input:focus,.form textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 20%,transparent)}
.hint{font-weight:400;font-size:12px;color:var(--muted)}
.emoji-pick,.color-pick{display:flex;flex-wrap:wrap;gap:6px}
.emoji-pick button{width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:var(--panel2);font-size:19px}
.color-pick button{width:30px;height:30px;border-radius:50%;border:3px solid var(--panel);box-shadow:0 0 0 1px var(--line)}
.emoji-pick button.on{border-color:var(--primary);background:var(--primary-soft)}
.color-pick button.on{box-shadow:0 0 0 2px var(--text)}
.preview-chip{display:flex;justify-content:center}
.preview-chip .group-card{max-width:280px}
.form-actions{display:flex;gap:8px;align-items:center;margin-top:4px}
.match-info{background:var(--panel2);padding:8px 12px;border-radius:10px}
.code{display:block;padding:10px 12px;border-radius:10px;background:var(--panel2);font-size:13px;word-break:break-all;user-select:all}

/* toasts */
.toasts{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:10px;z-index:80;max-width:min(380px,calc(100% - 36px))}
.toast{background:var(--panel);border-radius:14px;box-shadow:var(--shadow-lg);padding:12px 14px;display:flex;gap:12px;align-items:flex-start;border-left:4px solid var(--c,var(--primary));animation:pop .2s ease-out;cursor:pointer}
.toast .t-title{font-weight:700}
.toast .t-body{color:var(--muted);font-size:13px}
.toast.out{opacity:0;transform:translateY(8px);transition:.3s}

/* responsive */
@media (max-width:1180px){.layout{grid-template-columns:240px 340px 1fr}}
@media (max-width:980px){
  .layout{grid-template-columns:1fr;grid-template-rows:auto 1fr;padding:10px;gap:10px}
  .groups{flex-direction:row;overflow-x:auto;overflow-y:hidden;padding:2px 2px 6px;scrollbar-width:none}
  .groups::-webkit-scrollbar{display:none}
  .group-card{width:auto;flex:none;padding:8px 12px 8px 8px;gap:8px}
  .g-icon{width:32px;height:32px;font-size:17px;border-radius:10px}
  .g-sub{display:none}
  .groups-foot{margin:0;flex:none}
  .groups-foot .btn{height:100%}
  .reader{display:none}
  .app.reading .groups,.app.reading .list-pane{display:none}
  .app.reading .layout{grid-template-rows:1fr}
  .app.reading .reader{display:flex}
  .app.reading .only-mobile{display:inline-grid}
  .app.reading .brand{display:none}
  .brand{min-width:0}
  .brand-name{display:none}
  .topbar{padding:10px 12px;gap:8px;flex-wrap:wrap}
  .search{order:5;flex-basis:100%;max-width:none}
  .hide-sm{display:none}
  .reader-head{padding:18px}
  .reader-body{padding:18px}
}
@media (max-width:420px){.top-actions{gap:0}.icon-btn{width:34px}}