:root{--color-primary:#c4654a;--color-primary-hover:#a8533c;--color-bg:#faf6f4;--color-text:#3a2e2a;--color-text-secondary:#7a6560;--color-border:#e8dad5;--color-dark-bg:#3a2e2a;--color-dark-text:#e8b4a0;--color-white:#fff}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6;overflow:hidden}#app{flex-direction:column;height:100vh;display:flex}a{color:var(--color-primary);text-decoration:none}a:hover{color:var(--color-primary-hover)}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}.header{background:var(--color-bg);color:var(--color-text);border-bottom:1px solid var(--color-border);flex-shrink:0;justify-content:space-between;align-items:center;height:56px;padding:0 24px;display:flex}.header-left{align-items:center;gap:16px;display:flex}.header .logo{color:var(--color-primary);letter-spacing:-.5px;align-items:center;gap:8px;font-size:18px;font-weight:600;text-decoration:none;display:flex}.header .logo .logo-img{width:auto;height:28px}.header .logo .service{color:var(--color-text-secondary);margin-left:8px;font-size:14px;font-weight:400}.header-right{align-items:center;gap:12px;display:flex}.btn{border:1px solid #0000;border-radius:6px;align-items:center;gap:6px;padding:8px 16px;font-size:14px;font-weight:500;transition:all .15s;display:inline-flex}.btn-primary{background:var(--color-primary);color:var(--color-white);border-color:var(--color-primary)}.btn-primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-outline{color:var(--color-text);border-color:var(--color-border);background:0 0}.btn-outline:hover{border-color:var(--color-primary);color:var(--color-primary)}.btn-ghost{color:var(--color-text-secondary);background:0 0;border:none;padding:6px 12px}.btn-ghost:hover{color:var(--color-primary)}.btn-ghost.active{color:var(--color-primary);font-weight:600}.header-nav{align-items:center;gap:4px;display:flex}.header-user{align-items:center;gap:12px;display:flex}.user-email{color:var(--color-text-secondary);font-size:13px}.agent-selector{color:var(--color-text-secondary);align-items:center;gap:6px;font-size:13px;display:flex}.agent-selector label{font-weight:500}.agent-input{background:var(--color-white);border:1px solid var(--color-border);color:var(--color-text);border-radius:4px;width:140px;padding:4px 8px;font-family:inherit;font-size:13px}.agent-input::placeholder{color:var(--color-text-secondary);opacity:.6}.agent-input:focus{border-color:var(--color-primary);outline:none}.mail-layout{flex:1;display:flex;overflow:hidden}.sidebar{background:var(--color-white);border-right:1px solid var(--color-border);flex-direction:column;flex-shrink:0;width:200px;display:flex}.sidebar-actions{border-bottom:1px solid var(--color-border);padding:16px}.sidebar-actions .btn{justify-content:center;width:100%}.folder-list{flex:1;padding:8px;overflow-y:auto}.folder-item{cursor:pointer;color:var(--color-text);border-radius:6px;align-items:center;gap:8px;padding:8px 12px;font-size:14px;transition:background .15s;display:flex}.folder-item:hover{background:var(--color-bg)}.folder-item.active{color:var(--color-primary);background:#c4654a1a;font-weight:500}.folder-item .folder-icon{text-align:center;flex-shrink:0;width:20px;font-size:16px}.mail-list-panel{border-right:1px solid var(--color-border);flex-direction:column;flex-shrink:0;width:380px;display:flex;overflow:hidden}.mail-list-header{border-bottom:1px solid var(--color-border);background:var(--color-white);text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-secondary);flex-shrink:0;padding:12px 16px;font-size:14px;font-weight:600}.mail-list{flex:1;overflow-y:auto}.mail-item{border-bottom:1px solid var(--color-border);cursor:pointer;background:var(--color-white);padding:12px 16px;transition:background .15s}.mail-item:hover{background:var(--color-bg)}.mail-item.active{border-left:3px solid var(--color-primary);background:#c4654a0f;padding-left:13px}.mail-item-from{color:var(--color-text);white-space:nowrap;text-overflow:ellipsis;margin-bottom:2px;font-size:14px;font-weight:600;overflow:hidden}.mail-item-subject{color:var(--color-text);white-space:nowrap;text-overflow:ellipsis;margin-bottom:2px;font-size:13px;overflow:hidden}.mail-item-date{color:var(--color-text-secondary);font-size:12px}.mail-detail{flex-direction:column;flex:1;display:flex;overflow:hidden}.mail-detail-header{border-bottom:1px solid var(--color-border);background:var(--color-white);flex-shrink:0;padding:20px 24px}.mail-detail-subject{color:var(--color-text);margin-bottom:8px;font-size:20px;font-weight:600}.mail-detail-meta{color:var(--color-text-secondary);align-items:center;gap:12px;font-size:13px;display:flex}.mail-detail-from{color:var(--color-text);font-weight:500}.mail-detail-body{white-space:pre-wrap;word-break:break-word;flex:1;padding:24px;font-size:14px;line-height:1.7;overflow-y:auto}.compose-view{background:var(--color-white);flex-direction:column;flex:1;display:flex;overflow:hidden}.compose-header{border-bottom:1px solid var(--color-border);flex-shrink:0;justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.compose-header h3{font-size:16px;font-weight:600}.compose-fields{border-bottom:1px solid var(--color-border);flex-shrink:0}.compose-field{border-bottom:1px solid var(--color-border);align-items:center;padding:0 24px;display:flex}.compose-field:last-child{border-bottom:none}.compose-field label{width:64px;color:var(--color-text-secondary);flex-shrink:0;font-size:13px;font-weight:500}.compose-field input{color:var(--color-text);background:0 0;border:none;outline:none;flex:1;padding:12px 0;font-size:14px}.compose-body{flex-direction:column;flex:1;display:flex}.compose-body textarea{color:var(--color-text);resize:none;background:0 0;border:none;outline:none;flex:1;padding:16px 24px;font-size:14px;line-height:1.6}.compose-body textarea::placeholder{color:var(--color-text-secondary)}.compose-actions{border-top:1px solid var(--color-border);flex-shrink:0;gap:8px;padding:16px 24px;display:flex}.empty-state{color:var(--color-text-secondary);flex:1;justify-content:center;align-items:center;font-size:15px;display:flex}.login-page{flex:1;justify-content:center;align-items:center;display:flex}.login-card{text-align:center;background:var(--color-white);border-radius:12px;padding:48px;box-shadow:0 2px 12px #3a2e2a1a}.login-card h2{margin-bottom:8px}.login-card p{color:var(--color-text-secondary);margin-bottom:24px}.error-msg{color:#c44a4a;background:#fef2f2;border-radius:6px;margin:8px 24px;padding:8px 16px;font-size:13px}.success-msg{color:#3a7a4a;background:#f0fdf4;border-radius:6px;margin:8px 24px;padding:8px 16px;font-size:13px}.loading{text-align:center;color:var(--color-text-secondary);padding:40px}.avatar{object-fit:cover;border-radius:50%;width:32px;height:32px}.avatar-link{text-decoration:none;border:none!important;padding:0!important}.avatar-link:hover{border:none!important}.avatar-placeholder{background:var(--color-border);width:32px;height:32px;color:var(--color-text-secondary);border-radius:50%;justify-content:center;align-items:center;font-size:.8rem;text-decoration:none;display:flex}.user-name{color:var(--color-text-secondary);font-size:.85rem}.nav-link{color:var(--color-text-secondary);border-radius:4px;padding:.3rem .5rem;font-size:.85rem;text-decoration:none}.nav-link:hover{color:var(--color-primary)}.nav-link.active{color:var(--color-primary);font-weight:600}