:root{--navy:#15172b;--navy2:#1d213c;--orange:#e06c00;--orange2:#ff8a1f;--bg:#f5f6fa;--line:#e8eaf1;--text:#20233a;--muted:#7a8095;--white:#fff;--danger:#d64545}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit}.hidden{display:none!important}.login-view{min-height:100vh;background:radial-gradient(circle at 80% 10%,#29305b 0,transparent 34%),linear-gradient(135deg,var(--navy),#0f1121);display:grid;place-items:center;padding:30px}.login-brand{position:absolute;top:30px;left:38px;color:#fff;display:flex;gap:12px;align-items:center}.login-brand strong{font-size:24px}.login-brand strong span,.logo b{color:var(--orange2)}.login-brand small{display:block;color:#a9aec4}.brand-mark{width:46px;height:46px;border-radius:13px;background:linear-gradient(135deg,var(--orange),var(--orange2));display:grid;place-items:center;font-size:20px}.login-card{width:min(430px,100%);background:#fff;padding:38px;border-radius:22px;box-shadow:0 30px 80px #05061166}.login-card h1{margin:0 0 8px;font-size:30px}.login-card p{color:var(--muted);margin:0 0 28px}.login-card label{display:block;font-size:13px;font-weight:700;margin:17px 0 8px}.input-wrap{border:1px solid var(--line);border-radius:11px;padding:0 14px;display:flex;align-items:center;gap:10px}.input-wrap:focus-within{border-color:var(--orange);box-shadow:0 0 0 3px #e06c001c}.input-wrap i{color:#9aa0b5}.input-wrap input{border:0;outline:0;width:100%;padding:14px 0}.primary-btn{border:0;border-radius:11px;background:linear-gradient(135deg,var(--orange),var(--orange2));color:#fff;padding:13px 20px;font-weight:700;cursor:pointer;box-shadow:0 8px 20px #e06c0033}.login-card .primary-btn{width:100%;margin-top:24px}.error{color:var(--danger);font-size:13px;margin-top:14px}.mail-app{height:100vh;display:flex;overflow:hidden}.sidebar{width:250px;background:linear-gradient(180deg,var(--navy),#111326);color:#fff;padding:22px 16px;display:flex;flex-direction:column;flex:none}.logo{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;font-size:20px;font-weight:800;padding:0 8px 24px}.logo img{width:50px;height:50px;border-radius:10px;object-fit:contain}.compose{border:0;background:linear-gradient(135deg,var(--orange),var(--orange2));color:white;padding:14px;border-radius:12px;font-weight:700;cursor:pointer;margin:0 2px 20px}.sidebar nav{display:grid;gap:6px}.sidebar nav button{border:0;background:transparent;color:#b8bed3;display:flex;gap:13px;align-items:center;padding:12px 14px;border-radius:10px;cursor:pointer;text-align:left}.sidebar nav button i{width:20px}.sidebar nav button:hover,.sidebar nav button.active{background:#ffffff12;color:#fff}.sidebar nav button.active{box-shadow:inset 3px 0 var(--orange)}.sidebar-user{margin-top:auto;border-top:1px solid #ffffff14;padding:18px 5px 0;display:grid;grid-template-columns:38px 1fr 30px;gap:9px;align-items:center;min-width:0}.avatar{width:38px;height:38px;border-radius:50%;background:#e06c0024;color:var(--orange2);display:grid;place-items:center;font-weight:800}.sidebar-user div:nth-child(2){min-width:0}.sidebar-user strong,.sidebar-user small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user strong{font-size:12px}.sidebar-user small{font-size:10px;color:#8f96ad;margin-top:3px}.sidebar-user button{border:0;background:transparent;color:#8f96ad;cursor:pointer}.workspace{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:0 24px}.search{max-width:650px;flex:1;background:var(--bg);border-radius:10px;display:flex;align-items:center;padding:0 14px;color:#999fb1}.search input{width:100%;padding:12px;border:0;background:transparent;outline:0}.icon-btn{width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;color:var(--muted);cursor:pointer}.mobile{display:none}.content-grid{flex:1;display:grid;grid-template-columns:minmax(330px,42%) 1fr;min-height:0}.message-list-panel{background:#fff;border-right:1px solid var(--line);min-width:0;display:flex;flex-direction:column}.panel-heading{padding:24px;border-bottom:1px solid var(--line)}.panel-heading h1{font-size:22px;margin:0 0 5px}.panel-heading span{font-size:12px;color:var(--muted)}.message-list{overflow:auto;flex:1}.message-row{padding:17px 20px;border-bottom:1px solid #f0f1f5;cursor:pointer;display:grid;grid-template-columns:44px 1fr;gap:12px}.message-row:hover,.message-row.active{background:#fff8f1}.message-row.unread{border-left:3px solid var(--orange)}.sender-avatar{width:42px;height:42px;border-radius:12px;background:#eff1f7;color:#596078;display:grid;place-items:center;font-weight:800}.message-meta{min-width:0}.message-line{display:flex;justify-content:space-between;gap:10px}.message-line strong,.message-subject{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-line time{font-size:11px;color:var(--muted);flex:none}.message-subject{font-size:13px;margin-top:5px;color:#50556b}.message-size{font-size:10px;color:#a0a5b6;margin-top:7px}.reader{overflow:auto;background:#fbfbfd;padding:32px}.empty,.empty-reader{height:100%;display:grid;place-content:center;text-align:center;color:#a0a5b6}.empty-reader i{font-size:55px;color:#d9dce6}.empty-reader h2{color:#767c91;margin:18px 0 4px}.mail-head{border-bottom:1px solid var(--line);padding-bottom:20px}.mail-head h2{font-size:25px;margin:0 0 16px}.mail-address{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.mail-actions{display:flex;gap:8px;margin-top:18px}.mail-actions button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 11px;cursor:pointer}.mail-body{padding:26px 0;line-height:1.65;color:#35394d}.mail-body iframe{width:100%;border:0;min-height:420px;background:#fff}dialog{border:0;padding:0;border-radius:16px;width:min(720px,94vw);box-shadow:0 30px 90px #11152f55}dialog::backdrop{background:#10122688}.compose-head{background:var(--navy);color:#fff;padding:16px 20px;display:flex;justify-content:space-between;align-items:center}.compose-head h2{font-size:16px;margin:0}.compose-head button{border:0;background:transparent;color:#fff;cursor:pointer}.compose-field{display:flex;border-bottom:1px solid var(--line);align-items:center;padding:0 18px}.compose-field label{width:42px;color:var(--muted);font-size:12px}.compose-field input{border:0;outline:0;padding:13px 5px;width:100%}#composeForm textarea{width:100%;height:300px;border:0;resize:vertical;outline:0;padding:20px}.compose-actions{border-top:1px solid var(--line);padding:14px 18px;text-align:right}#toast{position:fixed;z-index:20;right:24px;top:20px;padding:13px 18px;border-radius:10px;background:var(--navy);color:#fff;transform:translateY(-90px);transition:.25s}#toast.show{transform:none}@media(max-width:900px){.content-grid{grid-template-columns:1fr}.reader{display:none}.reader.open{display:block;position:absolute;inset:72px 0 0;z-index:3}.sidebar{position:fixed;z-index:10;height:100%;transform:translateX(-100%);transition:.25s}.sidebar.open{transform:none}.mobile{display:block}}@media(max-width:520px){.topbar{padding:0 12px}.content-grid{grid-template-columns:1fr}.panel-heading{padding:18px}.login-brand{position:static;margin-bottom:24px}.login-view{display:flex;flex-direction:column;justify-content:center}.login-card{padding:28px 22px}}