:root{--bg: #f3f5f9;--panel: #ffffff;--border: #e3e6ee;--text: #1e2330;--muted: #6b7280;--primary: #4f46e5;--primary-dark: #4338ca;--unread-bg: #eef2ff}*{box-sizing:border-box}html,body,#root{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg)}.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#eef2ff,#fff 40%);padding:16px}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;box-shadow:0 12px 40px #1e233014;padding:36px 32px;width:min(380px,100%);display:flex;flex-direction:column;gap:14px}.login-logo{display:flex;align-items:center;gap:12px}.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:11px;background:var(--primary);color:#fff;font-weight:700;font-size:20px}.logo-mark.sm{width:30px;height:30px;font-size:15px;border-radius:8px}.login-card h1{margin:0;font-size:20px}.login-sub{margin:0 0 4px;color:var(--muted);font-size:13px}.field{display:flex;flex-direction:column;gap:5px;font-size:13px;color:var(--muted)}.field input,.compose-input{border:1px solid var(--border);border-radius:9px;padding:10px 12px;font-size:14px;outline:none;transition:border-color .15s}.field input:focus,.compose-input:focus{border-color:var(--primary)}.error-banner{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca;border-radius:9px;padding:9px 12px;font-size:13px}.btn{border:none;border-radius:9px;padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{opacity:.6;cursor:default}.btn-block{width:100%}.tb-btn{border:1px solid var(--border);background:var(--panel);border-radius:8px;padding:7px 10px;font-size:13px;cursor:pointer;white-space:nowrap;color:var(--text)}.tb-btn:hover{background:var(--unread-bg)}.app-shell{display:flex;flex-direction:column;height:100vh}.top-bar{display:flex;align-items:center;gap:16px;background:var(--panel);border-bottom:1px solid var(--border);padding:10px 16px;height:58px}.top-left{display:flex;align-items:center;gap:10px}.app-title{font-weight:700}.search-bar{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}.search-input{width:min(460px,100%);border:1px solid var(--border);border-radius:999px;background:var(--bg);padding:9px 16px;font-size:14px;outline:none}.search-input:focus{border-color:var(--primary);background:#fff}.top-right{display:flex;align-items:center;gap:10px}.user-email{font-size:13px;color:var(--muted)}.main-layout{display:flex;flex:1;overflow:hidden}.sidebar{width:210px;background:var(--panel);border-right:1px solid var(--border);padding:12px 8px;overflow-y:auto;flex-shrink:0}.sidebar-title{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:4px 10px 8px}.mailbox-list{list-style:none;margin:0;padding:0}.mb-item{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:9px;cursor:pointer;font-size:14px;transition:background .1s}.mb-item:hover{background:var(--bg)}.mb-item.active{background:var(--unread-bg);color:var(--primary-dark);font-weight:600}.mb-icon{width:18px;text-align:center}.mb-name{flex:1}.mb-count{font-size:12px;color:var(--muted)}.msg-list-panel{width:340px;flex-shrink:0;background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column}.panel-toolbar{padding:12px 12px 8px}.msg-list{flex:1;overflow-y:auto}.msg-list-header{font-size:11px;color:var(--muted);padding:4px 16px 8px;text-transform:uppercase;letter-spacing:.04em}.msg-items{list-style:none;margin:0;padding:0}.msg-item{position:relative;display:grid;grid-template-columns:22px 1fr auto;gap:3px 8px;align-items:center;padding:10px 8px 10px 10px;cursor:pointer;background:var(--panel);border-top:1px solid var(--border);font-size:13.5px}.msg-item:hover{background:var(--bg)}.msg-item.selected{background:var(--unread-bg);box-shadow:inset 3px 0 0 var(--primary)}.msg-item.unread .msg-from,.msg-item.unread .msg-subject{font-weight:700}.flag-btn{border:none;background:none;cursor:pointer;font-size:14px;padding:2px;color:#d6d9e2}.flag-btn.flagged{color:#f59e0b}.msg-from{grid-column:2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.msg-subject{grid-column:2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}.msg-preview{grid-column:2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted)}.msg-date{grid-row:1;grid-column:3;font-size:12px;color:var(--muted)}.attach-icon{grid-column:3;grid-row:2 / span 2;font-size:13px}.msg-empty{padding:24px;text-align:center;color:var(--muted)}.msg-view-panel{flex:1;background:var(--panel);overflow-y:auto}.msg-view{padding:20px 28px 40px;max-width:860px}.msg-view-empty{height:100%;display:flex;align-items:center;justify-content:center;color:var(--muted)}.msg-toolbar{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}.msg-subject-full{font-size:19px;margin:0 0 10px}.msg-meta{border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:14px;color:var(--muted);font-size:13px;line-height:1.5}.msg-meta-email{margin-left:8px}.msg-to,.msg-date-full{font-size:12px}.attachments-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px;background:var(--bg);border-radius:9px;padding:10px 12px}.attach-label{font-size:13px;font-weight:600}.attach-chip{display:inline-flex;align-items:center;gap:4px;background:var(--panel);border:1px solid var(--border);border-radius:999px;padding:5px 12px;font-size:12.5px;text-decoration:none;color:var(--primary-dark);cursor:pointer;max-width:220px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.attach-chip:hover{background:var(--unread-bg)}.msg-body{font-size:14.5px;line-height:1.6;overflow-wrap:break-word}.msg-body img{max-width:100%}.msg-text{font-family:inherit;white-space:pre-wrap;margin:0}.modal-overlay{position:fixed;inset:0;background:#0a0f1e73;display:flex;align-items:flex-end;justify-content:flex-end;padding:24px;z-index:50}.modal-box{background:var(--panel);border-radius:14px;box-shadow:0 16px 50px #00000040;width:min(560px,100%);display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.modal-header h3{margin:0;font-size:15px}.compose-fields{display:flex;flex-direction:column;padding:12px 16px 0;gap:9px}.compose-body{flex:1;min-height:220px;margin:12px 16px;border:1px solid var(--border);border-radius:9px;padding:12px;font-size:14px;resize:none;outline:none;font-family:inherit;line-height:1.55}.compose-body:focus{border-color:var(--primary)}.compose-attachments{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:0 16px 12px}.attach-add-btn{background:var(--bg);border:1px dashed var(--border);border-radius:9px;padding:8px 12px;font-size:13px;cursor:pointer;color:var(--primary)}.compose-actions{padding:12px 16px 16px;border-top:1px solid var(--border)}@media(max-width:860px){.sidebar{width:56px}.mb-name,.mb-count,.sidebar-title{display:none}.msg-list-panel{width:250px}}