:root{--navy:#091a2f;--navy2:#102d4f;--gold:#c8a45d;--bg:#f3f6fa;--white:#fff;--text:#172033;--muted:#6b7280;--border:#d9e0e8;--danger:#b42318;--success:#067647}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}button,input,textarea{font:inherit}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,var(--navy),var(--navy2))}.login-card{width:min(430px,100%);background:#fff;padding:34px;border-radius:18px;box-shadow:0 24px 70px rgba(0,0,0,.28)}.brand{font:700 30px Georgia,serif;color:var(--navy);margin-bottom:6px}.brand span{color:var(--gold)}.brand.light{color:#fff}.muted{color:var(--muted)}label{display:block;font-size:14px;font-weight:700;margin:18px 0 7px}input,textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:13px 14px;outline:none;background:#fff}textarea{min-height:240px;resize:vertical}.email-display{background:#f6f8fb;border:1px solid var(--border);border-radius:10px;padding:13px 14px;font-weight:700}.button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:10px;padding:12px 18px;font-weight:800;cursor:pointer}.button.primary{width:100%;margin-top:20px;background:var(--gold);color:var(--navy)}.button.primary.auto-width{width:auto}.button.secondary{background:#eef2f6;color:var(--navy)}.alert{padding:12px 14px;border-radius:10px;margin:14px 0}.alert.error{background:#fff1f0;color:var(--danger)}.alert.success{background:#ecfdf3;color:var(--success)}.app{min-height:100vh;display:grid;grid-template-columns:260px 1fr}.sidebar{background:var(--navy);color:#fff;padding:24px 18px}.sidebar .brand{margin-bottom:30px}.nav-link{display:block;padding:12px 14px;border-radius:9px;margin-bottom:7px}.nav-link:hover,.nav-link.active{background:rgba(255,255,255,.1)}.content{padding:28px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px}.topbar h1{margin:0 0 4px}.panel{background:#fff;border:1px solid var(--border);border-radius:14px;overflow:hidden}.panel-head{display:flex;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}.mail-row{display:grid;grid-template-columns:1.2fr 2fr 190px;gap:16px;padding:15px 20px;border-bottom:1px solid var(--border)}.mail-row:hover{background:#f8fafc}.mail-row.unread{font-weight:800;background:#fffdf8}.empty{padding:30px;color:var(--muted)}.compose-panel,.message-panel{padding:22px}.message-meta{padding-bottom:18px;border-bottom:1px solid var(--border);margin-bottom:18px;line-height:1.7}.message-body{font:inherit;white-space:pre-wrap;word-break:break-word;margin:0}@media(max-width:850px){.app{grid-template-columns:1fr}.sidebar{display:flex;align-items:center;gap:8px;overflow:auto}.sidebar .brand{margin:0 20px 0 0;white-space:nowrap}.nav-link{white-space:nowrap;margin:0}.content{padding:18px}.mail-row{grid-template-columns:1fr}}