.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);padding:20px}.login-box{background:white;border-radius:12px;box-shadow:0 20px 40px #0000001a;padding:40px;width:100%;max-width:400px}.login-header{text-align:center;margin-bottom:30px}.logo{font-size:2.5rem;font-weight:700;margin:0 0 10px}.logo-cg{color:#667eea}.logo-drive{color:#764ba2}.tagline{color:#666;font-size:.9rem}.login-form h2{text-align:center;margin-bottom:25px;color:#333;font-weight:600}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:5px;color:#555;font-weight:500}.form-group input{width:100%;padding:12px;border:2px solid #e1e5e9;border-radius:8px;font-size:16px;transition:border-color .3s;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#667eea}.form-group input:disabled{background-color:#f5f5f5;cursor:not-allowed}.login-button,.demo-button{width:100%;padding:12px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;margin-bottom:15px}.login-button{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff}.login-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 5px 15px #667eea66}.demo-button{background:#f8f9fa;color:#667eea;border:2px solid #667eea}.demo-button:hover:not(:disabled){background:#667eea;color:#fff}.login-button:disabled,.demo-button:disabled{opacity:.6;cursor:not-allowed;transform:none}.divider{text-align:center;margin:20px 0;color:#999;position:relative}.divider:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:#e1e5e9;z-index:1}.divider{background:white;padding:0 15px;z-index:2;position:relative}.error-message{background:#fee;color:#c33;padding:10px;border-radius:6px;margin-bottom:20px;border:1px solid #fcc;font-size:14px}.login-footer{text-align:center;margin-top:30px;padding-top:20px;border-top:1px solid #e1e5e9}.login-footer p{color:#999;font-size:.85rem;margin:0}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #0066CC;--secondary-color: #FF6B35;--dark-color: #1A1A2E;--light-color: #F5F5F5;--success-color: #28A745;--danger-color: #DC3545;--text-color: #333;--border-color: #E0E0E0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-color);background:var(--light-color)}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:linear-gradient(135deg,var(--primary-color) 0%,#004499 100%);color:#fff;padding:1.5rem 0;box-shadow:0 2px 10px #06c3}.header-content{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;align-items:center;gap:2rem}.logo{font-size:2rem;font-weight:700;display:flex;align-items:center}.logo-cg{color:#fff}.logo-drive{color:var(--secondary-color);margin-left:.25rem}.tagline{font-size:.9rem;opacity:.9}.main{flex:1;padding:2rem 0}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:1rem;background:white;border-radius:8px;box-shadow:0 1px 3px #0000001a}.breadcrumb{display:flex;align-items:center;gap:.5rem}.breadcrumb-item{background:none;border:none;color:var(--primary-color);cursor:pointer;font-size:.95rem;padding:.25rem .5rem;border-radius:4px;transition:background .2s}.breadcrumb-item:hover{background:var(--light-color)}.breadcrumb-separator{color:#999}.actions{display:flex;gap:1rem}.upload-button,.refresh-button{padding:.75rem 1.5rem;border-radius:6px;border:none;font-size:.95rem;font-weight:500;cursor:pointer;transition:all .2s}.upload-button{background:var(--primary-color);color:#fff}.upload-button:hover:not(:disabled){background:#004499;transform:translateY(-1px);box-shadow:0 4px 12px #0066cc4d}.upload-button:disabled{opacity:.6;cursor:not-allowed}.refresh-button{background:white;color:var(--primary-color);border:1px solid var(--primary-color)}.refresh-button:hover{background:var(--primary-color);color:#fff}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.file-item{background:white;border-radius:8px;padding:1.5rem;text-align:center;cursor:pointer;transition:all .2s;box-shadow:0 1px 3px #0000001a;position:relative}.file-item:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.file-item.folder{background:linear-gradient(135deg,#f0f8ff 0%,#e6f3ff 100%)}.file-icon{font-size:3rem;margin-bottom:.5rem}.file-name{font-weight:500;margin-bottom:.25rem;word-break:break-all;color:var(--dark-color)}.file-size{font-size:.85rem;color:#666}.file-actions{display:flex;justify-content:center;gap:.5rem;margin-top:1rem}.action-button{background:none;border:none;font-size:1.25rem;cursor:pointer;padding:.25rem;border-radius:4px;transition:all .2s}.action-button:hover{background:var(--light-color);transform:scale(1.1)}.action-button.delete:hover{background:#ffe6e6}.empty-state{grid-column:1 / -1;text-align:center;padding:4rem 2rem;color:#999}.empty-icon{font-size:5rem;margin-bottom:1rem}.empty-state h2{color:var(--dark-color);margin-bottom:.5rem}.loading{grid-column:1 / -1;text-align:center;padding:4rem;font-size:1.25rem;color:var(--primary-color)}.footer{background:var(--dark-color);color:#fff;padding:2rem 0;text-align:center;margin-top:auto}.footer p{opacity:.8}@media (max-width: 768px){.header-content{flex-direction:column;align-items:flex-start;gap:.5rem}.toolbar{flex-direction:column;align-items:stretch;gap:1rem}.actions{flex-direction:column}.file-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}.user-info{margin-left:auto;display:flex;align-items:center;gap:1rem}.logout-button{background:rgba(255,255,255,.2);color:#fff;border:1px solid rgba(255,255,255,.3);padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.9rem;transition:all .3s}.logout-button:hover{background:rgba(255,255,255,.3);border-color:#ffffff80}