.divider{text-align:center;margin:1.5rem 0;color:#888;position:relative}.divider:before,.divider:after{content:"";position:absolute;top:50%;width:40%;height:1px;background-color:#ddd}.divider:before{left:0}.divider:after{right:0}.social-login-buttons{display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.social-button{display:flex;align-items:center;justify-content:center;padding:.75rem;border:none;border-radius:4px;font-size:1rem;cursor:pointer;transition:background-color .3s ease;color:#fff}.social-button i{margin-right:.75rem;font-size:1.2rem}.social-button.google{background-color:#db4437}.social-button.google:hover{background-color:#c33d2e}.social-button.twitter{background-color:#1da1f2}.social-button.twitter:hover{background-color:#1a91da}.social-button.facebook{background-color:#4267b2}.social-button.facebook:hover{background-color:#3b5998}.social-button.github{background-color:#333}.social-button.github:hover{background-color:#222}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333}.app{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.loading-container{display:flex;align-items:center;justify-content:center;min-height:100vh}.loading-spinner{padding:20px;font-size:18px;color:#fff;background:#ffffff1a;border-radius:10px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-container{width:100%;max-width:400px;margin:0 auto}.auth-card{background:#fffffff2;padding:40px;border-radius:20px;box-shadow:0 20px 40px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-card h2{text-align:center;margin-bottom:30px;color:#333;font-size:28px;font-weight:600}.auth-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:500;color:#555;font-size:14px}.form-group input{padding:12px 16px;border:2px solid #e1e5e9;border-radius:10px;font-size:16px;transition:border-color .3s ease;background:#fff}.form-group input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.auth-button{padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;margin-top:10px}.auth-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 20px #667eea4d}.auth-button:disabled{opacity:.7;cursor:not-allowed}.auth-link{text-align:center;margin-top:20px;color:#666}.auth-link a{color:#667eea;text-decoration:none;font-weight:500}.auth-link a:hover{text-decoration:underline}.error-message{background:#fee;color:#c33;padding:12px;border-radius:8px;border:1px solid #fcc;font-size:14px}.success-message{background:#efe;color:#363;padding:12px;border-radius:8px;border:1px solid #cfc;font-size:14px}.dashboard-container{width:100%;max-width:1200px;margin:0 auto;padding:20px;min-height:100vh}.dashboard-header{display:flex;justify-content:space-between;align-items:center;background:#fffffff2;padding:20px 30px;border-radius:15px;margin-bottom:30px;box-shadow:0 10px 30px #0000001a}.dashboard-header h1{color:#333;font-size:32px;font-weight:700}.user-info{display:flex;align-items:center;gap:20px}.user-info span{color:#666;font-weight:500}.sign-out-button{padding:10px 20px;background:#ff6b6b;color:#fff;border:none;border-radius:8px;font-weight:500;cursor:pointer;transition:background .3s ease}.sign-out-button:hover{background:#ff5252}.upload-section{background:#fffffff2;padding:30px;border-radius:15px;margin-bottom:30px;box-shadow:0 10px 30px #0000001a}.upload-section h2{color:#333;margin-bottom:20px;font-size:24px;font-weight:600}.upload-area{border:2px dashed #ddd;border-radius:10px;padding:30px;text-align:center;transition:border-color .3s ease}.upload-area:hover{border-color:#667eea}.file-input{padding:10px;border:1px solid #ddd;border-radius:8px;background:#fff;cursor:pointer}.images-section{background:#fffffff2;padding:30px;border-radius:15px;box-shadow:0 10px 30px #0000001a}.images-section h2{color:#333;margin-bottom:20px;font-size:24px;font-weight:600}.images-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}.image-item{border-radius:10px;overflow:hidden;box-shadow:0 5px 15px #0000001a;transition:transform .3s ease}.image-item:hover{transform:translateY(-5px)}.image-item img{width:100px;height:100px;object-fit:cover;display:block}@media (max-width: 768px){.dashboard-header{flex-direction:column;gap:15px;text-align:center}.auth-card{padding:30px 20px}.images-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}