/* ===== hibristol Mail — friendly UI ===== */
:root{
  --bg:#f4f6fb; --panel:#ffffff; --panel2:#f8fafd; --line:#e5e9f2; --text:#1d2433; --muted:#6b7280;
  --accent:#2f6fed; --accent-2:#e8efff; --accent-text:#1d4fd6; --danger:#e5484d; --danger-bg:#fdecec;
  --star:#f5b301; --unread-dot:#2f6fed; --shadow:0 10px 30px rgba(20,30,60,.12); --radius:14px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}
[data-theme="dark"]{
  --bg:#0f1420; --panel:#171d2b; --panel2:#1c2333; --line:#273043; --text:#e6e9f0; --muted:#98a2b3;
  --accent:#5b8cff; --accent-2:#1f2c4d; --accent-text:#9db8ff; --danger:#ff6b6b; --danger-bg:#3a1f22; --shadow:0 10px 30px rgba(0,0,0,.45);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1420; --panel:#171d2b; --panel2:#1c2333; --line:#273043; --text:#e6e9f0; --muted:#98a2b3;
    --accent:#5b8cff; --accent-2:#1f2c4d; --accent-text:#9db8ff; --danger:#ff6b6b; --danger-bg:#3a1f22; --shadow:0 10px 30px rgba(0,0,0,.45);
  }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font);font-size:15px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;overflow:hidden}
.hidden{display:none!important}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
input,textarea,select{font:inherit;color:inherit}
kbd,.kbd{font:12px/1 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--panel2);border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:3px 6px;color:var(--muted)}
.muted{color:var(--muted)}
.link{color:var(--accent-text);font-weight:500;padding:2px 4px;border-radius:6px}
.link:hover{background:var(--accent-2)}
.only-mobile,.icon-btn.only-mobile{display:none}
::selection{background:var(--accent-2)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:12px;font-weight:600;background:var(--panel2);border:1px solid var(--line);transition:.15s;white-space:nowrap}
.btn:hover{border-color:var(--accent);color:var(--accent-text)}
.btn.primary{background:var(--accent);color:#fff;border-color:transparent;box-shadow:0 6px 16px rgba(47,111,237,.3)}
.btn.primary:hover{filter:brightness(1.07);color:#fff}
.btn.primary:disabled{opacity:.6;cursor:progress}
.btn.ghost{background:transparent}
.btn.danger{background:var(--danger);color:#fff;border-color:transparent}
.btn.big{width:100%;justify-content:center;padding:14px;font-size:16px}
.btn.small{padding:8px 12px;border-radius:10px;font-size:14px}
.btn .kbd{margin-left:4px;color:rgba(255,255,255,.85);background:rgba(255,255,255,.18);border-color:transparent}
.icon-btn{width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:18px;color:var(--muted);transition:.15s;flex:none}
.icon-btn:hover{background:var(--accent-2);color:var(--accent-text)}
.icon-btn.danger:hover{background:var(--danger-bg);color:var(--danger)}
.icon-btn.light{color:rgba(255,255,255,.9)}
.icon-btn.light:hover{background:rgba(255,255,255,.18);color:#fff}
.icon-btn.active{color:var(--star)}
.ic{font-size:16px;line-height:1}

/* ---- avatar ---- */
.avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;flex:none;font-size:15px;letter-spacing:.5px}

/* ---- login ---- */
.login{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:16px;background:linear-gradient(135deg,#eaf0ff 0%,var(--bg) 60%)}
[data-theme="dark"] .login{background:linear-gradient(135deg,#141b33 0%,var(--bg) 60%)}
.login-card{width:100%;max-width:420px;background:var(--panel);border-radius:22px;padding:36px 32px 24px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:14px;animation:pop .35s ease}
@keyframes pop{from{transform:translateY(12px) scale(.98);opacity:0}to{transform:none;opacity:1}}
.brand-big{display:flex;align-items:center;gap:12px}
.brand-big h1{margin:0;font-size:24px}
.login-card p{margin:-6px 0 6px}
.field{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.field input,.field textarea,.field select,.modal input,.modal textarea{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--line);background:var(--panel2);font-size:15px;font-weight:400;color:var(--text);outline:none;transition:.15s}
.field input:focus,.field textarea:focus,.modal input:focus,.modal textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-2);background:var(--panel)}
.pw{position:relative;display:block}
.pw input{padding-right:44px}
.pw-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:34px;height:34px;border-radius:8px;font-size:16px}
.check{display:flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}
.check input{width:18px;height:18px;accent-color:var(--accent)}
.error{background:var(--danger-bg);color:var(--danger);padding:10px 12px;border-radius:10px;font-size:14px}
.login-foot{display:flex;justify-content:center;margin-top:4px}

/* ---- layout ---- */
.app{display:grid;grid-template-columns:240px minmax(320px,420px) 1fr;height:100vh;height:100dvh}
.sidebar{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:16px 12px;gap:14px;min-width:0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;padding:2px 6px}
.compose-btn{justify-content:center;padding:12px;border-radius:14px;font-size:15px}
.folders{flex:1;overflow:auto;display:flex;flex-direction:column;gap:2px}
.folder{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;color:var(--text);text-align:left;width:100%;transition:.12s;font-weight:500}
.folder:hover{background:var(--panel2)}
.folder.active{background:var(--accent-2);color:var(--accent-text);font-weight:700}
.folder .f-ic{width:22px;text-align:center;font-size:16px;opacity:.8}
.folder .f-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.folder .badge{background:var(--accent);color:#fff;font-size:11px;font-weight:700;padding:2px 7px;border-radius:99px;min-width:20px;text-align:center}
.folder.active .badge{background:var(--accent-text)}
.folder.drop-target{outline:2px dashed var(--accent);outline-offset:-2px}
.sidebar-foot{border-top:1px solid var(--line);padding-top:10px;display:flex;flex-direction:column;gap:8px}
.user{display:flex;align-items:center;gap:8px}
.user .avatar{width:32px;height:32px;font-size:12px}
.user-email{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.list-pane{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}
.list-head{display:flex;align-items:center;gap:8px;padding:12px 12px 6px}
.search{flex:1;display:flex;align-items:center;gap:8px;background:var(--panel2);border:1.5px solid var(--line);border-radius:12px;padding:0 12px;height:40px;transition:.15s}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-2)}
.search .ic{color:var(--muted);font-size:18px}
.search input{flex:1;border:0;background:transparent;outline:none;font-size:15px;min-width:0}
.list-sub{display:flex;align-items:center;justify-content:space-between;padding:6px 16px 8px;gap:8px}
.list-sub h2{margin:0;font-size:20px}
.chips{display:flex;gap:6px}
.chip{padding:6px 11px;border-radius:99px;font-size:13px;font-weight:600;color:var(--muted);background:var(--panel2);border:1px solid var(--line)}
.chip.active{background:var(--accent-2);color:var(--accent-text);border-color:transparent}
.bulk{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;background:var(--accent-2);color:var(--accent-text);font-weight:600;font-size:14px}
.bulk-actions{display:flex;gap:2px}
.bulk .icon-btn{width:34px;height:34px;color:var(--accent-text)}
.messages{flex:1;overflow:auto;padding:4px 8px}
.msg{display:grid;grid-template-columns:auto 40px 1fr auto;grid-template-rows:auto auto;column-gap:10px;row-gap:2px;padding:10px 10px;border-radius:12px;cursor:pointer;transition:.12s;position:relative;align-items:center;margin-bottom:2px;border:1px solid transparent}
.msg:hover{background:var(--panel2)}
.msg.active{background:var(--accent-2);border-color:transparent}
.msg.selected{background:var(--accent-2)}
.msg .sel{grid-row:1/3;width:18px;height:18px;accent-color:var(--accent);opacity:0;transition:.12s;margin:0}
.msg:hover .sel,.msg.selected .sel,.selecting .msg .sel{opacity:1}
.msg .avatar{grid-row:1/3;width:40px;height:40px}
.msg .m-from{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:flex;gap:6px;align-items:center;min-width:0}
.msg .m-from .dot{width:8px;height:8px;border-radius:50%;background:var(--unread-dot);flex:none;display:none}
.msg.unread .m-from{font-weight:700}
.msg.unread .m-from .dot{display:block}
.msg .m-date{font-size:12px;color:var(--muted);white-space:nowrap;text-align:right}
.msg.unread .m-date{color:var(--accent-text);font-weight:600}
.msg .m-subj{grid-column:3/5;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);min-width:0;padding-right:26px}
.msg.unread .m-subj{font-weight:600}
.msg .m-subj .m-prev{color:var(--muted);font-weight:400}
.msg .m-icons{display:inline-flex;gap:4px;font-size:12px;color:var(--muted);vertical-align:middle;margin-left:4px}
.msg .star{position:absolute;right:8px;bottom:6px;font-size:15px;color:var(--muted);opacity:0;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.msg:hover .star,.msg .star.on{opacity:1}
.msg .star.on{color:var(--star)}
.msg.dragging{opacity:.5}
.list-foot{padding:8px;display:flex;justify-content:center}
.empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:6px;padding:24px;color:var(--muted)}
.empty-art{font-size:52px;opacity:.35}
.empty h3{margin:6px 0 0;color:var(--text)}
.empty p{margin:0}
.messages .empty{height:60%}
.skeleton{height:62px;border-radius:12px;background:linear-gradient(90deg,var(--panel2) 25%,var(--line) 50%,var(--panel2) 75%);background-size:200% 100%;animation:sh 1.2s infinite;margin:4px 0}
@keyframes sh{from{background-position:200% 0}to{background-position:-200% 0}}

.read-pane{background:var(--bg);display:flex;flex-direction:column;min-width:0}
.reader{display:flex;flex-direction:column;height:100%;min-height:0}
.reader-toolbar{display:flex;align-items:center;gap:6px;padding:10px 14px;background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:wrap}
.tb-group{display:flex;gap:4px;align-items:center;padding-right:8px;border-right:1px solid var(--line)}
.tb-group:last-child,.tb-group.right{border-right:0}
.tb-group.right{margin-left:auto;padding-right:0}
.menu-wrap{position:relative}
.menu{position:absolute;right:0;top:42px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);min-width:200px;padding:6px;z-index:20;display:flex;flex-direction:column}
.menu button{text-align:left;padding:9px 12px;border-radius:8px;font-size:14px}
.menu button:hover{background:var(--panel2)}
.reader-scroll{flex:1;overflow:auto;padding:22px 26px 30px}
.reader-scroll h1{font-size:22px;margin:0 0 16px;line-height:1.3;word-wrap:break-word}
.rd-meta{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.rd-who{flex:1;min-width:0;font-size:14px}
.rd-from b{font-size:15px}
.rd-to{margin-top:2px;overflow:hidden;text-overflow:ellipsis}
.rd-details{margin-top:8px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:13px;display:grid;grid-template-columns:auto 1fr;gap:4px 10px}
.rd-details span:nth-child(odd){color:var(--muted)}
.rd-date{font-size:13px;white-space:nowrap}
.banner{background:#fff8e1;color:#7a5a00;padding:10px 14px;border-radius:10px;margin-bottom:12px;font-size:14px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
[data-theme="dark"] .banner{background:#3b3216;color:#ffd97a}
.rd-body{background:#fff;border-radius:var(--radius);border:1px solid var(--line);overflow:hidden}
#rdFrame{width:100%;border:0;display:block;min-height:120px;background:#fff}
.attachments{margin-top:16px;display:flex;flex-wrap:wrap;gap:10px}
.att{display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:8px 12px 8px 8px;text-decoration:none;color:var(--text);max-width:100%;transition:.12s}
.att:hover{border-color:var(--accent);box-shadow:0 4px 12px rgba(47,111,237,.15)}
.att .a-ic{width:36px;height:36px;border-radius:8px;background:var(--accent-2);color:var(--accent-text);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex:none;overflow:hidden}
.att .a-ic img{width:100%;height:100%;object-fit:cover}
.att .a-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:200px}
.att .a-size{font-size:12px;color:var(--muted)}
.att .a-dl{color:var(--muted);font-size:16px;padding:4px}
.quick-reply{margin-top:22px;display:flex;gap:8px}

/* ---- compose ---- */
.compose{position:fixed;right:24px;bottom:0;width:640px;max-width:calc(100vw - 32px);height:min(680px,calc(100vh - 40px));background:var(--panel);border-radius:16px 16px 0 0;box-shadow:0 -4px 40px rgba(0,0,0,.25);display:flex;flex-direction:column;z-index:50;animation:up .25s ease}
@keyframes up{from{transform:translateY(30px);opacity:0}to{transform:none;opacity:1}}
.compose.min{height:48px}
.compose.min .cp-body,.compose.min .cp-foot{display:none}
.cp-head{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 8px 16px;background:var(--accent);color:#fff;font-weight:600;border-radius:16px 16px 0 0;cursor:default;height:48px}
.cp-head-actions{display:flex}
.cp-body{flex:1;display:flex;flex-direction:column;overflow:auto;position:relative}
.cp-row{display:flex;align-items:center;gap:8px;padding:6px 16px;border-bottom:1px solid var(--line);min-height:44px}
.cp-row label{width:56px;color:var(--muted);font-size:14px;flex:none}
.cp-row input{flex:1;border:0;outline:none;background:transparent;font-size:15px;padding:6px 0;min-width:0}
.chips-input{flex:1;display:flex;flex-wrap:wrap;gap:6px;align-items:center;min-width:0;cursor:text}
.chips-input input{flex:1;min-width:120px;border:0;outline:none;background:transparent;font-size:15px;padding:6px 0}
.chipx{display:inline-flex;align-items:center;gap:4px;background:var(--accent-2);color:var(--accent-text);border-radius:99px;padding:4px 6px 4px 10px;font-size:13px;font-weight:600;max-width:100%}
.chipx.bad{background:var(--danger-bg);color:var(--danger)}
.chipx span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chipx button{width:18px;height:18px;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center}
.chipx button:hover{background:rgba(0,0,0,.12)}
#cpText{flex:1;border:0;outline:none;resize:none;padding:14px 16px;font-size:15px;line-height:1.55;background:transparent;min-height:160px;font-family:var(--font)}
.cp-attach{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 10px}
.cp-attach:empty{display:none}
.cp-attach .att{padding:6px 8px}
.cp-drop{display:none;position:absolute;inset:8px;border:2px dashed var(--accent);border-radius:12px;background:var(--accent-2);align-items:center;justify-content:center;font-weight:600;color:var(--accent-text);pointer-events:none}
.compose.dragover .cp-drop{display:flex}
.cp-foot{display:flex;align-items:center;gap:6px;padding:10px 12px;border-top:1px solid var(--line)}
.cp-foot .right{margin-left:auto}
.cp-status{font-size:13px}
.ac{position:absolute;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);max-height:220px;overflow:auto;z-index:60;min-width:260px;padding:4px}
.ac div{padding:8px 12px;border-radius:8px;cursor:pointer;font-size:14px;display:flex;flex-direction:column}
.ac div small{color:var(--muted)}
.ac div.hl,.ac div:hover{background:var(--accent-2)}

/* ---- modals ---- */
.scrim{position:fixed;inset:0;background:rgba(10,15,30,.45);z-index:70;backdrop-filter:blur(2px)}
.modal{position:fixed;left:50%;top:50%;transform:translate(-50%,-50%);width:min(560px,calc(100vw - 32px));max-height:calc(100vh - 40px);background:var(--panel);border-radius:18px;box-shadow:var(--shadow);z-index:80;display:flex;flex-direction:column;animation:pop .25s ease}
.modal.small{width:min(400px,calc(100vw - 32px))}
.modal header{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 8px 22px}
.modal header h3{margin:0;font-size:18px}
.modal-body{padding:8px 22px 16px;overflow:auto;display:flex;flex-direction:column;gap:14px}
.modal footer{padding:10px 22px 18px;display:flex;gap:8px;justify-content:flex-end}
.field-row{display:flex;gap:12px}
.field-row .field{flex:1}
.setup{border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.setup summary{cursor:pointer;font-weight:600}
.setup table{width:100%;border-collapse:collapse;margin-top:10px;font-size:14px}
.setup td{padding:6px 4px;border-top:1px solid var(--line)}
.setup td:first-child{color:var(--muted);width:40%}
.shortcuts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px;font-size:13px}
.shortcuts i{font-style:normal;color:var(--muted);margin-left:6px}
.folder-pick{gap:2px}
.folder-pick .folder{padding:10px 12px}

/* ---- toasts ---- */
#toasts{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:100;align-items:center;pointer-events:none}
.toast{pointer-events:auto;background:#1d2433;color:#fff;padding:12px 16px;border-radius:12px;box-shadow:var(--shadow);display:flex;align-items:center;gap:14px;font-size:14px;animation:up .2s ease;max-width:calc(100vw - 32px)}
[data-theme="dark"] .toast{background:#2a3347}
.toast.err{background:var(--danger)}
.toast button{color:#9db8ff;font-weight:700}
.toast.err button{color:#fff}

/* ---- print ---- */
@media print{.sidebar,.list-pane,.reader-toolbar,.quick-reply,.compose,#toasts{display:none!important}.app{display:block}.read-pane{background:#fff}#rdFrame{height:auto}}

/* ---- responsive ---- */
@media (max-width:1100px){.app{grid-template-columns:220px minmax(300px,360px) 1fr}}
@media (max-width:900px){
  .only-mobile,.icon-btn.only-mobile{display:inline-flex}
  .app{grid-template-columns:1fr;position:relative}
  .sidebar{position:fixed;left:0;top:0;bottom:0;width:280px;z-index:40;transform:translateX(-100%);transition:transform .2s;box-shadow:none}
  .app.nav-open .sidebar{transform:none;box-shadow:var(--shadow)}
  .list-pane{border-right:0}
  .read-pane{position:fixed;inset:0;z-index:30;transform:translateX(100%);transition:transform .2s;background:var(--bg)}
  .app.show-read .read-pane{transform:none}
  .reader-scroll{padding:16px}
  .reader-toolbar .btn.small span:not(.ic){display:none}
  .compose{right:0;left:0;bottom:0;width:100%;max-width:100%;height:100%;border-radius:0}
  .cp-head{border-radius:0}
  .msg{grid-template-columns:auto 36px 1fr auto}
  .msg .avatar{width:36px;height:36px;font-size:13px}
  .list-sub h2{font-size:18px}
  .chips{gap:4px}.chip{padding:5px 9px;font-size:12px}
  .field-row{flex-direction:column}
  .shortcuts{grid-template-columns:1fr}
}