* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
        body { background: linear-gradient(135deg, #667eea, #764ba2); display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
        .card { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.15); width: 100%; max-width: 450px; }
        h2 { text-align: center; color: #333; margin-bottom: 25px; font-size: 24px; }
        .form-group { margin-bottom: 20px; }
        label { display: block; margin-bottom: 8px; color: #555; font-weight: 600; font-size: 14px; }
        input { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 15px; transition: border-color 0.3s; }
        input:focus { border-color: #667eea; outline: none; }
        button { width: 100%; padding: 12px; background: #4e73df; border: none; border-radius: 6px; color: white; font-size: 16px; font-weight: bold; cursor: pointer; transition: background 0.3s; margin-top: 10px; }
        button:hover { background: #2e59d9; }
        .link { text-align: center; margin-top: 20px; font-size: 14px; color: #666; }
        .link a { color: #667eea; text-decoration: none; font-weight: bold; }