*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #1a73e8;--primary-hover: #1765cc;--primary-light: #d2e3fc;--danger: #d93025;--success: #188038;--warning: #f9ab00;--bg: #f6f8fc;--surface: #ffffff;--text: #202124;--text-secondary: #5f6368;--text-light: #80868b;--border: #e0e0e0;--border-light: #f0f0f0;--hover: #f2f2f2;--hover-blue: #ecf3fe;--sidebar-bg: #f6f8fc;--sidebar-active: #d3e3fd;--sidebar-hover: #e8eaed;--compose-bg: #c2e7ff;--compose-hover: #a8d8f0;--radius: 8px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 50%;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .06);--shadow: 0 1px 3px rgba(0, 0, 0, .1), 0 1px 2px rgba(0, 0, 0, .06);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .12);--shadow-xl: 0 8px 24px rgba(0, 0, 0, .16);--font: "Google Sans", Roboto, "Segoe UI", "Helvetica Neue", Arial, sans-serif;--font-size: 14px;--header-h: 64px;--sidebar-w: 256px}body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:var(--font-size);line-height:1.5;min-height:100vh;overflow:hidden}a{color:var(--primary);text-decoration:none}button{cursor:pointer;font-family:inherit;font-size:inherit}input,textarea,select{font-family:inherit;font-size:inherit}.app-layout{display:flex;flex-direction:column;height:100vh}.app-body{display:flex;flex:1;overflow:hidden}.app-main{flex:1;overflow-y:auto;padding:0}.topbar{height:var(--header-h);background:var(--surface);border-bottom:1px solid var(--border-light);display:flex;align-items:center;padding:0 8px 0 16px;gap:8px;z-index:200;flex-shrink:0}.topbar-menu-btn{width:48px;height:48px;border:none;background:none;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:20px}.topbar-menu-btn:hover{background:var(--hover)}.topbar-logo{display:flex;align-items:center;gap:4px;margin-right:8px;min-width:100px}.topbar-logo span{font-size:22px;font-weight:500;color:var(--text-secondary)}.topbar-logo span b{color:var(--primary);font-weight:600}.topbar-search{flex:1;max-width:720px;margin:0 auto}.search-bar{display:flex;align-items:center;background:#eaf1fb;border-radius:var(--radius-xl);padding:0 16px;height:48px;transition:background .2s,box-shadow .2s}.search-bar:focus-within{background:var(--surface);box-shadow:var(--shadow-lg)}.search-bar .search-icon{color:var(--text-secondary);font-size:18px;margin-right:12px}.search-bar input{flex:1;border:none;background:none;outline:none;font-size:16px;color:var(--text);padding:0}.search-bar input::placeholder{color:var(--text-light)}.topbar-actions{display:flex;align-items:center;gap:4px;margin-left:auto}.topbar-icon-btn{width:40px;height:40px;border:none;background:none;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:18px;position:relative}.topbar-icon-btn:hover{background:var(--hover)}.avatar-btn{width:32px;height:32px;border-radius:var(--radius-full);border:none;background:var(--primary);color:#fff;font-size:14px;font-weight:500;display:flex;align-items:center;justify-content:center;margin-left:8px}.avatar-menu{position:absolute;top:56px;right:16px;background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:16px;z-index:300;min-width:280px}.avatar-menu-header{text-align:center;padding-bottom:16px;border-bottom:1px solid var(--border-light);margin-bottom:12px}.avatar-menu-header .name{font-weight:600;font-size:16px}.avatar-menu-header .email{font-size:13px;color:var(--text-secondary)}.avatar-menu-item{display:block;width:100%;text-align:left;padding:10px 12px;border:none;background:none;border-radius:var(--radius);color:var(--text);transition:background .12s}.avatar-menu-item:hover{background:var(--hover)}.sidebar{width:var(--sidebar-w);background:var(--sidebar-bg);padding:12px;overflow-y:auto;flex-shrink:0}.compose-btn{display:flex;align-items:center;gap:12px;padding:0 24px;height:56px;border:none;background:var(--compose-bg);border-radius:var(--radius-lg);font-size:14px;font-weight:500;color:var(--text);margin-bottom:16px;width:100%;box-shadow:var(--shadow-sm);transition:background .15s,box-shadow .15s}.compose-btn:hover{background:var(--compose-hover);box-shadow:var(--shadow)}.compose-btn .compose-icon{font-size:24px}.sidebar-nav{display:flex;flex-direction:column;gap:1px}.sidebar-item{display:flex;align-items:center;gap:16px;padding:0 24px;height:40px;border:none;background:none;border-radius:0 var(--radius-xl) var(--radius-xl) 0;font-size:14px;color:var(--text-secondary);font-weight:500;cursor:pointer;width:100%;text-align:left;text-decoration:none;position:relative;transition:background .12s}.sidebar-item:hover{background:var(--sidebar-hover)}.sidebar-item.active{background:var(--sidebar-active);color:var(--text);font-weight:700}.sidebar-item .icon{width:20px;text-align:center;font-size:18px;flex-shrink:0}.sidebar-item .badge{margin-left:auto;font-size:12px;font-weight:700}.sidebar-divider{height:1px;background:var(--border-light);margin:8px 0}.inbox-toolbar{display:flex;align-items:center;padding:4px 8px 4px 16px;height:48px;border-bottom:1px solid var(--border-light);background:var(--surface);gap:4px}.toolbar-btn{width:40px;height:40px;border:none;background:none;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:16px}.toolbar-btn:hover{background:var(--hover)}.toolbar-pagination{margin-left:auto;display:flex;align-items:center;gap:4px;color:var(--text-secondary);font-size:12px}.email-list{background:var(--surface)}.email-row{display:flex;align-items:center;padding:0 16px;height:40px;border-bottom:1px solid var(--border-light);cursor:pointer;font-size:14px;transition:box-shadow .12s}.email-row:hover{box-shadow:inset 1px 0 0 var(--border),0 1px 2px #0000000f,0 1px 3px #0000001a;z-index:1;position:relative}.email-row.unread{background:var(--surface)}.email-row.unread .email-from{font-weight:700;color:var(--text)}.email-row.unread .email-subject-text{font-weight:700}.email-row.read{background:#f2f6fc}.email-row.spam-row{opacity:.5}.email-checkbox{width:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center}.email-checkbox input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary)}.email-star{width:32px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-light);cursor:pointer}.email-star:hover,.email-star.starred{color:#f4b400}.email-from{width:200px;flex-shrink:0;font-size:14px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:12px}.email-content{flex:1;display:flex;align-items:center;overflow:hidden;gap:4px;min-width:0}.email-subject-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}.email-preview{color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:400}.email-spam-chip{background:#fce8e6;color:var(--danger);font-size:11px;padding:1px 8px;border-radius:4px;font-weight:500;flex-shrink:0;margin-left:8px}.email-date{width:80px;flex-shrink:0;text-align:right;font-size:12px;color:var(--text-secondary);padding-left:8px}.email-detail-wrapper{max-width:900px;margin:0 auto;padding:16px 24px}.email-detail-toolbar{display:flex;align-items:center;gap:4px;margin-bottom:16px}.email-detail-subject{font-size:22px;font-weight:400;margin-bottom:20px;line-height:1.4;display:flex;align-items:center;gap:8px}.email-detail-subject .label-chip{font-size:11px;padding:2px 8px;border-radius:4px;background:var(--hover);color:var(--text-secondary);font-weight:500}.email-message-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border-light);margin-bottom:8px;overflow:hidden}.email-message-header{display:flex;align-items:flex-start;padding:16px;gap:12px}.sender-avatar{width:40px;height:40px;border-radius:var(--radius-full);background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:500;font-size:16px;flex-shrink:0}.sender-info{flex:1;min-width:0}.sender-name{font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px}.sender-email-tag{font-weight:400;color:var(--text-secondary);font-size:12px}.sender-to{font-size:12px;color:var(--text-secondary);margin-top:2px}.message-date{font-size:12px;color:var(--text-secondary);flex-shrink:0}.email-message-body{padding:0 16px 16px 68px;font-size:14px;line-height:1.7;word-wrap:break-word}.email-message-body img{max-width:100%}.email-attachments{padding:12px 16px 16px 68px;display:flex;gap:8px;flex-wrap:wrap}.attachment-chip{display:flex;align-items:center;gap:8px;padding:8px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px;color:var(--text);background:var(--surface)}.attachment-chip:hover{background:var(--hover)}.compose-overlay{position:fixed;bottom:0;right:24px;z-index:500;width:520px;max-height:600px;display:flex;flex-direction:column;border-radius:var(--radius-lg) var(--radius-lg) 0 0;box-shadow:var(--shadow-xl);background:var(--surface);overflow:hidden}.compose-minimized{max-height:40px}.compose-header{display:flex;align-items:center;justify-content:space-between;padding:0 16px;height:40px;background:#404040;color:#fff;font-size:14px;font-weight:500;cursor:pointer;flex-shrink:0;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.compose-header-actions{display:flex;gap:4px}.compose-header-btn{width:28px;height:28px;border:none;background:none;color:#fff;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:14px}.compose-header-btn:hover{background:#ffffff26}.compose-body{flex:1;display:flex;flex-direction:column;overflow:hidden}.compose-field{display:flex;align-items:center;padding:0 16px;min-height:40px;border-bottom:1px solid var(--border-light);font-size:14px}.compose-field label{color:var(--text-secondary);font-size:14px;width:60px;flex-shrink:0}.compose-field input{flex:1;border:none;outline:none;padding:8px 0;font-size:14px;background:none;color:var(--text)}.compose-textarea{flex:1;padding:12px 16px;border:none;outline:none;resize:none;font-size:14px;line-height:1.6;min-height:200px;color:var(--text)}.compose-footer{display:flex;align-items:center;padding:8px 16px;gap:4px;border-top:1px solid var(--border-light);flex-shrink:0}.send-btn{display:flex;align-items:center;gap:8px;padding:0 24px;height:36px;border:none;background:var(--primary);color:#fff;border-radius:var(--radius-xl);font-size:14px;font-weight:500}.send-btn:hover{background:var(--primary-hover);box-shadow:var(--shadow)}.send-btn:disabled{opacity:.6;cursor:not-allowed}.compose-delete-btn{margin-left:auto;width:36px;height:36px;border:none;background:none;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:16px}.compose-delete-btn:hover{background:var(--hover)}.login-wrapper{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px;background:var(--bg)}.login-card{width:100%;max-width:450px;background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:48px 40px;border:1px solid var(--border-light)}.login-card .logo{text-align:center;margin-bottom:8px}.login-card .logo span{font-size:28px;font-weight:500}.login-card .logo span b{color:var(--primary)}.login-card h2{text-align:center;font-size:24px;font-weight:400;margin-bottom:4px}.login-card .subtitle{text-align:center;color:var(--text-secondary);font-size:16px;margin-bottom:32px}.gmail-input{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:4px;font-size:16px;margin-bottom:24px;background:var(--surface);color:var(--text)}.gmail-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #1a73e826}.login-btn{width:100%;height:48px;border:none;background:var(--primary);color:#fff;border-radius:4px;font-size:16px;font-weight:500}.login-btn:hover{background:var(--primary-hover)}.login-btn:disabled{opacity:.6}.alert{padding:12px 16px;border-radius:4px;font-size:14px;margin-bottom:16px}.alert-error{background:#fce8e6;color:var(--danger)}.alert-success{background:#e6f4ea;color:var(--success)}.settings-page{max-width:700px;margin:0 auto;padding:24px}.settings-page h2{font-size:18px;font-weight:500;margin-bottom:20px}.settings-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border-light);padding:24px;margin-bottom:16px}.settings-card h3{font-size:15px;font-weight:600;margin-bottom:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-size:12px;font-weight:500;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.3px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:4px;font-size:14px;background:var(--surface);color:var(--text)}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #1a73e826}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 24px;border-radius:4px;font-size:14px;font-weight:500;border:none;transition:all .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-outline{background:var(--surface);border:1px solid var(--border);color:var(--primary)}.btn-outline:hover{background:var(--hover-blue)}.btn-sm{padding:4px 12px;font-size:13px}.admin-table{width:100%;border-collapse:collapse;font-size:14px}.admin-table th,.admin-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-light)}.admin-table th{font-size:11px;text-transform:uppercase;color:var(--text-secondary);font-weight:600;letter-spacing:.5px}.loading{text-align:center;padding:48px;color:var(--text-secondary);font-size:14px}.spinner{display:inline-block;width:28px;height:28px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin-bottom:8px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:80px 24px;color:var(--text-secondary)}.empty-state .empty-icon{font-size:64px;margin-bottom:16px;opacity:.4}.empty-state p{font-size:16px}@media (max-width: 900px){.sidebar{width:72px;padding:12px 4px}.compose-btn span{display:none}.compose-btn{width:48px;height:48px;padding:0;justify-content:center}.sidebar-item span:not(.icon){display:none}.sidebar-item .badge{display:none}.sidebar-item{padding:0;justify-content:center;border-radius:var(--radius-full);width:48px;height:48px;margin:2px auto}.email-from{width:120px}}@media (max-width: 600px){.sidebar,.topbar-search,.email-checkbox,.email-star{display:none}.email-from{width:100px;font-size:13px}.compose-overlay{width:100%;right:0;border-radius:0}.email-detail-wrapper{padding:12px}.email-message-body{padding:0 12px 12px}}