:root{color-scheme:light;--bg:#e8edf3;--panel:rgba(255,255,255,.92);--sidebar:#f1f4f8;--line:rgba(60,60,67,.16);--text:#1d1d1f;--muted:#6e6e73;--blue:#087cf0;--blue-soft:rgba(0,122,255,.11);--green:#27854c;--shadow:0 18px 55px rgba(31,43,58,.17)}
*{box-sizing:border-box;min-width:0}html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--text);background:radial-gradient(circle at 12% 0,#f9fbff 0,transparent 40%),var(--bg)}button,input,textarea{font:inherit}button{color:inherit}.hidden{display:none!important}
body{padding:10px;overflow:hidden}.mail-window{width:calc(100vw - 20px);height:calc(100vh - 20px);margin:auto;overflow:hidden;border:1px solid rgba(255,255,255,.95);border-radius:18px;background:var(--panel);box-shadow:var(--shadow);backdrop-filter:blur(25px)}
.titlebar{height:58px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 17px;border-bottom:1px solid var(--line);background:rgba(249,250,252,.9)}.titlebar>strong{font-size:16px}.traffic{display:flex;gap:8px}.traffic i{width:13px;height:13px;border-radius:50%;background:#ff5f57}.traffic i:nth-child(2){background:#febc2e}.traffic i:nth-child(3){background:#28c840}.icon-button{justify-self:end;width:38px;height:38px;border:0;border-radius:10px;background:transparent;font-size:25px;cursor:pointer}.icon-button:hover{background:rgba(118,118,128,.1)}.icon-button:disabled{opacity:.3;cursor:default}
.layout{height:calc(100% - 58px);display:grid;grid-template-columns:minmax(330px,23vw) minmax(420px,29vw) minmax(480px,1fr)}.sidebar{display:flex;flex-direction:column;overflow:hidden;border-right:1px solid var(--line);background:var(--sidebar)}.brand{display:flex;gap:13px;align-items:center;padding:20px 18px 14px}.brand-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;color:#fff;background:linear-gradient(145deg,#65aef8,#087cf0);box-shadow:0 6px 17px rgba(0,122,255,.24);font-size:19px}.brand b,.brand small{display:block}.brand b{font-size:16px}.brand small{margin-top:4px;color:var(--muted);font-size:13px}
.query-card{margin:0 14px 16px;padding:16px;border:1px solid rgba(255,255,255,.85);border-radius:15px;background:rgba(255,255,255,.7);box-shadow:0 1px 3px rgba(0,0,0,.04)}.query-card label{display:block;margin:0 0 9px;font-size:14px;font-weight:700}.query-card textarea{width:100%;min-height:185px;padding:13px 14px;border:1px solid var(--line);border-radius:11px;outline:none;resize:vertical;background:#fff;font-size:15px;line-height:1.55}.query-card textarea:focus{border-color:rgba(0,122,255,.58);box-shadow:0 0 0 4px rgba(0,122,255,.1)}.primary-button{width:100%;height:47px;margin-top:13px;border:0;border-radius:11px;color:#fff;background:linear-gradient(#1689f7,#087cf0);font-size:15px;font-weight:700;box-shadow:0 5px 14px rgba(0,122,255,.22);cursor:pointer}.primary-button:disabled{opacity:.55;cursor:wait}.email-chips{display:flex;flex-wrap:wrap;gap:6px;max-height:72px;margin-top:9px;overflow:auto}.email-chip{max-width:100%;padding:5px 8px;border-radius:7px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#0967c2;background:var(--blue-soft);font-size:12px}.email-chip.invalid{color:#a52626;background:rgba(255,59,48,.11)}
.sidebar-heading{display:flex;align-items:center;justify-content:space-between;padding:0 18px 8px;color:var(--muted);font-size:13px;font-weight:700}.sidebar-heading button{border:0;background:transparent;color:var(--blue);font-size:12px;cursor:pointer}.mailbox-list{flex:1;overflow:auto;padding:0 9px 14px}.mailbox-placeholder{padding:18px 11px;color:var(--muted);font-size:13px;line-height:1.55}.mailbox-item{width:100%;display:grid;grid-template-columns:36px minmax(0,1fr) auto auto;gap:9px;align-items:center;padding:11px;border:0;border-radius:11px;background:transparent;text-align:left;cursor:pointer}.mailbox-item:hover{background:rgba(0,122,255,.06)}.mailbox-item.active{background:rgba(0,122,255,.13)}.mailbox-symbol{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;color:var(--blue);background:var(--blue-soft);font-size:14px;font-weight:700}.mailbox-main b,.mailbox-main small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mailbox-main b{font-size:14px}.mailbox-main small{margin-top:3px;color:var(--muted);font-size:12px}.mailbox-count{min-width:25px;padding:3px 7px;border-radius:11px;color:var(--muted);background:rgba(118,118,128,.1);font-size:11px;font-style:normal;text-align:center}.mailbox-delete{width:28px;height:28px;border:0;border-radius:8px;background:transparent;color:#8d8d93;font-size:18px;cursor:pointer}.mailbox-delete:hover{color:#d52b1e;background:rgba(255,59,48,.1)}
.message-column{display:flex;flex-direction:column;overflow:hidden;border-right:1px solid var(--line);background:rgba(255,255,255,.72)}.column-header{min-height:78px;display:flex;justify-content:space-between;gap:12px;align-items:center;padding:13px 16px;border-bottom:1px solid var(--line)}.column-header b,.column-header small{display:block;max-width:250px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.column-header b{font-size:17px}.column-header small{margin-top:4px;color:var(--muted);font-size:13px}.filters{display:flex;padding:3px;border-radius:10px;background:rgba(118,118,128,.1)}.filters button{border:0;border-radius:8px;padding:7px 10px;background:transparent;font-size:12px;cursor:pointer;white-space:nowrap}.filters button.active{background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.1)}.message-list{flex:1;overflow:auto}.message-item{width:100%;display:grid;grid-template-columns:44px minmax(0,1fr);gap:12px;padding:15px 16px;border:0;border-bottom:1px solid var(--line);background:transparent;text-align:left;cursor:pointer}.message-item:hover{background:rgba(0,122,255,.045)}.message-item.active{color:#fff;background:var(--blue)}.list-avatar{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;color:#505761;background:linear-gradient(145deg,#edf0f4,#d6dbe2);font-size:17px;font-weight:700}.message-item.active .list-avatar{color:var(--blue);background:#fff}.message-main{overflow:hidden}.message-top{display:flex;gap:8px;align-items:baseline}.message-top b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.message-top time{margin-left:auto;flex:0 0 auto;font-size:11px;opacity:.72}.message-subject{display:block;margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:700}.message-preview{display:-webkit-box;margin-top:5px;overflow:hidden;color:var(--muted);font-size:12px;line-height:1.45;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow-wrap:anywhere}.message-item.active .message-preview{color:rgba(255,255,255,.8)}.message-meta{display:flex;gap:6px;margin-top:8px}.folder-mini,.code-mini{max-width:160px;padding:4px 7px;border-radius:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px}.folder-mini{color:#1266b2;background:rgba(0,122,255,.1)}.folder-mini.junk{color:#8a5b00;background:rgba(255,159,10,.13)}.code-mini{color:var(--green);background:rgba(52,199,89,.12);font-weight:700;letter-spacing:.05em}.message-item.active .folder-mini,.message-item.active .code-mini{color:#fff;background:rgba(255,255,255,.18)}
.empty-state{height:100%;min-height:300px;display:grid;place-content:center;justify-items:center;padding:30px;text-align:center;color:var(--muted)}.empty-state>span{width:64px;height:64px;display:grid;place-items:center;margin-bottom:15px;border-radius:18px;color:var(--blue);background:var(--blue-soft);font-size:29px}.empty-state b{color:var(--text);font-size:17px}.empty-state p{max-width:320px;margin:8px 0 0;font-size:13px;line-height:1.55}
.preview-column{overflow:auto;background:rgba(255,255,255,.85)}.preview-empty{height:100%;display:grid;place-content:center;justify-items:center;padding:38px;text-align:center}.preview-empty>span{width:122px;height:122px;display:grid;place-items:center;border-radius:30px;color:#75a7d8;background:linear-gradient(145deg,#f3f8fd,#e3edf8);font-size:48px}.preview-empty h2{margin:22px 0 8px;font-size:25px}.preview-empty p{margin:0;color:var(--muted);font-size:14px}.preview{width:100%;max-width:1050px;margin:auto;padding:34px clamp(28px,4vw,70px) 60px;overflow:hidden}.preview-meta{display:flex;justify-content:space-between;gap:16px;align-items:center}.preview-meta time{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:13px}.folder-badge{flex:0 0 auto;padding:6px 10px;border-radius:7px;color:#0967c2;background:var(--blue-soft);font-size:12px;font-weight:700}.folder-badge.junk{color:#8a5b00;background:rgba(255,159,10,.13)}.preview h1{max-width:100%;margin:19px 0 24px;font-size:clamp(28px,2.4vw,40px);line-height:1.18;letter-spacing:-.03em;overflow-wrap:anywhere;word-break:break-word}.sender-card{display:flex;gap:13px;align-items:center;padding-bottom:25px;border-bottom:1px solid var(--line)}.avatar{flex:0 0 auto;width:50px;height:50px;display:grid;place-items:center;border-radius:50%;color:#fff;background:linear-gradient(145deg,#5aaaf8,#1478d9);font-size:18px;font-weight:700}.sender-text{overflow:hidden}.sender-text b,.sender-text span,.sender-text small{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sender-text b{font-size:15px}.sender-text span{margin-top:3px;color:var(--muted);font-size:13px}.sender-text small{margin-top:5px;color:var(--muted);font-size:12px}.sender-text small strong{color:var(--text)}
.code-card{margin:25px 0;padding:19px;border:1px solid rgba(52,199,89,.25);border-radius:15px;background:linear-gradient(145deg,rgba(52,199,89,.1),rgba(52,199,89,.035));overflow:hidden}.code-top{display:flex;justify-content:space-between;gap:12px;color:#247443}.code-top b{font-size:14px}.code-top small{font-size:12px}.code-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:13px}.code-button{max-width:100%;padding:10px 15px;border:1px solid rgba(52,199,89,.25);border-radius:10px;background:#fff;color:#15763d;font-size:20px;font-weight:800;letter-spacing:.08em;cursor:pointer;overflow-wrap:anywhere}.body-toolbar{display:flex;justify-content:space-between;align-items:center;margin:25px 0 10px}.body-toolbar b{font-size:15px}.body-toolbar button{padding:7px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:12px;cursor:pointer}.mail-body{width:100%;margin:0;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;font:14px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;overflow:auto}.toast{position:fixed;left:50%;bottom:25px;z-index:20;max-width:min(480px,calc(100vw - 30px));padding:11px 16px;border-radius:10px;color:#fff;background:rgba(35,35,38,.92);font-size:13px;opacity:0;transform:translate(-50%,15px);pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1100px){body{padding:0;overflow:auto}.mail-window{width:100%;height:auto;min-height:100vh;border-radius:0}.layout{height:auto;min-height:calc(100vh - 58px);grid-template-columns:330px minmax(0,1fr)}.preview-column{grid-column:1/-1;min-height:520px;border-top:1px solid var(--line)}.sidebar,.message-column{min-height:680px}.preview{max-width:900px}}
@media(max-width:720px){.titlebar{position:sticky;top:0;z-index:10}.layout{display:block}.sidebar,.message-column{min-height:auto;border-right:0;border-bottom:1px solid var(--line)}.query-card textarea{min-height:145px}.mailbox-list{max-height:300px}.message-list{max-height:580px}.preview-column{min-height:500px}.preview{padding:25px 18px 45px}.preview h1{font-size:27px}.filters button{padding:7px 8px}.column-header{align-items:flex-start;flex-direction:column}}