*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--sidebar-w: 220px;--list-w: 320px;--bg: #f5f5f5;--surface: #ffffff;--border: #e0e0e0;--primary: #1a73e8;--primary-dark: #1557b0;--text: #202124;--text-muted: #6b7280;--unread-bg: #e8f0fe;--hover-bg: #f1f3f4;--selected-bg: #d3e3fd;--danger: #d93025}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);height:100vh;overflow:hidden}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a73e8,#0d47a1)}.login-box{background:#fff;border-radius:12px;padding:40px 36px;width:360px;box-shadow:0 8px 32px #0003;text-align:center}.login-logo{font-size:48px;margin-bottom:8px}.login-box h1{font-size:24px;font-weight:600;margin-bottom:28px;color:var(--text)}.login-box input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;font-size:14px;margin-bottom:12px;outline:none;transition:border-color .2s}.login-box input:focus{border-color:var(--primary)}.login-box button{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer;margin-top:4px;transition:background .2s}.login-box button:hover:not(:disabled){background:var(--primary-dark)}.login-box button:disabled{opacity:.6;cursor:not-allowed}.error{background:#fce8e6;color:var(--danger);padding:10px 14px;border-radius:6px;font-size:13px;margin-bottom:10px;text-align:left}.app{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:16px 16px 8px}.logo{font-size:16px;font-weight:700;color:var(--primary);letter-spacing:-.3px}.compose-btn{margin:8px 12px 16px;padding:12px 16px;background:var(--primary);color:#fff;border:none;border-radius:24px;font-size:14px;font-weight:500;cursor:pointer;text-align:left;transition:background .2s,box-shadow .2s;box-shadow:0 1px 3px #00000026}.compose-btn:hover{background:var(--primary-dark);box-shadow:0 2px 8px #0003}.folders{flex:1;overflow-y:auto}.folder-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 16px;background:none;border:none;border-radius:0 24px 24px 0;font-size:14px;cursor:pointer;color:var(--text);transition:background .15s;text-align:left;margin-right:8px}.folder-item:hover{background:var(--hover-bg)}.folder-item.active{background:var(--selected-bg);color:var(--primary);font-weight:600}.folder-icon{font-size:16px;flex-shrink:0}.folder-label{flex:1}.badge{background:var(--primary);color:#fff;border-radius:10px;padding:2px 7px;font-size:11px;font-weight:600;min-width:20px;text-align:center}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border);font-size:12px}.user-email{color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:6px}.logout-btn{background:none;border:1px solid var(--border);border-radius:6px;padding:5px 12px;font-size:12px;cursor:pointer;color:var(--text-muted);transition:all .15s}.logout-btn:hover{background:var(--hover-bg);color:var(--text)}.email-list{width:var(--list-w);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}.list-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border);background:var(--surface)}.list-title{font-size:13px;color:var(--text-muted)}.refresh-btn{background:none;border:none;font-size:18px;cursor:pointer;color:var(--text-muted);padding:2px 6px;border-radius:4px;transition:all .15s}.refresh-btn:hover{background:var(--hover-bg);color:var(--text)}.email-list ul{list-style:none;overflow-y:auto;flex:1}.email-item{padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s;position:relative}.email-item:hover{background:var(--hover-bg)}.email-item.selected{background:var(--selected-bg)}.email-item.unread{background:var(--unread-bg)}.email-item.unread.selected{background:var(--selected-bg)}.email-item-from{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:3px}.email-item.unread .email-item-from{font-weight:700}.email-item-subject{font-size:13px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:2px}.email-item.unread .email-item-subject{color:var(--text);font-weight:500}.email-item-date{font-size:11px;color:var(--text-muted);position:absolute;top:12px;right:12px}.loading,.empty{padding:40px;text-align:center;color:var(--text-muted);font-size:14px}.email-view{flex:1;background:var(--surface);display:flex;flex-direction:column;overflow:hidden}.empty-view{align-items:center;justify-content:center}.empty-hint{color:var(--text-muted);font-size:15px}.email-view-header{display:flex;align-items:flex-start;justify-content:space-between;padding:20px 24px 12px;border-bottom:1px solid var(--border);gap:16px}.email-subject{font-size:20px;font-weight:500;line-height:1.3;flex:1}.email-actions{display:flex;gap:8px;flex-shrink:0}.btn-reply,.btn-delete{padding:8px 16px;border-radius:6px;font-size:13px;cursor:pointer;border:1px solid var(--border);background:none;transition:all .15s}.btn-reply:hover{background:var(--hover-bg)}.btn-delete:hover{background:#fce8e6;border-color:var(--danger);color:var(--danger)}.email-meta{padding:12px 24px;border-bottom:1px solid var(--border);font-size:13px;display:flex;flex-direction:column;gap:4px;color:var(--text-muted)}.meta-label{font-weight:500;color:var(--text);margin-right:6px}.email-body{flex:1;overflow:auto;padding:20px 24px}.text-body{white-space:pre-wrap;word-wrap:break-word;font-family:inherit;font-size:14px;line-height:1.6;color:var(--text)}.html-body{width:100%;height:100%;border:none;min-height:400px}.compose-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:flex-end;justify-content:flex-end;padding:0 24px 24px 0;z-index:1000}.compose-modal{width:520px;max-height:85vh;background:var(--surface);border-radius:12px;box-shadow:0 8px 40px #00000040;display:flex;flex-direction:column;overflow:hidden}.compose-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:#404040;color:#fff;font-size:14px;font-weight:500}.compose-close{background:none;border:none;color:#fff;font-size:18px;cursor:pointer;padding:0 4px;opacity:.8;transition:opacity .15s}.compose-close:hover{opacity:1}.compose-modal form{display:flex;flex-direction:column;flex:1;overflow:hidden}.compose-field{display:flex;align-items:center;padding:8px 16px;border-bottom:1px solid var(--border);gap:10px}.compose-field label{font-size:13px;color:var(--text-muted);width:40px;flex-shrink:0}.compose-field input,.compose-from{flex:1;border:none;outline:none;font-size:14px;color:var(--text)}.compose-field input::placeholder{color:var(--text-muted)}.compose-body{flex:1;padding:16px;border:none;outline:none;resize:none;font-size:14px;font-family:inherit;line-height:1.6;color:var(--text);min-height:200px}.compose-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;justify-content:flex-start}.btn-send{padding:10px 24px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s}.btn-send:hover:not(:disabled){background:var(--primary-dark)}.btn-send:disabled{opacity:.6;cursor:not-allowed}